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23 <h1 class="settitle">XBoard</h1>
27 Next: <a rel="next" accesskey="n" href="#Major-modes">Major modes</a>,
28 Up: <a rel="up" accesskey="u" href="#dir">(dir)</a>
32 <h2 class="unnumbered">Introduction</h2>
34 <p><a name="index-introduction-1"></a>
36 <p>XBoard is a graphical chessboard that can serve as a
37 user interface to chess engines (such as GNU Chess), the
38 Internet Chess Servers,
39 electronic mail correspondence chess, or your own collection of saved games.
41 <p>This manual documents version 4.8.0 of XBoard.
44 <li><a accesskey="1" href="#Major-modes">Major modes</a>: The main things XBoard can do.
45 <li><a accesskey="2" href="#Basic-operation">Basic operation</a>: Mouse and keyboard functions.
46 <li><a accesskey="3" href="#Menus">Menus</a>: Menus, buttons, and keys.
47 <li><a accesskey="4" href="#Options">Options</a>: Command options supported by XBoard.
48 <li><a accesskey="5" href="#Chess-Servers">Chess Servers</a>: Using XBoard with an Internet Chess Server (ICS).
49 <li><a accesskey="6" href="#Firewalls">Firewalls</a>: Connecting to a chess server through a firewall.
50 <li><a accesskey="7" href="#Environment">Environment</a>: Environment variables.
51 <li><a accesskey="8" href="#Limitations">Limitations</a>: Known limitations and/or bugs.
52 <li><a accesskey="9" href="#Problems">Problems</a>: How and where to report any problems you run into.
53 <li><a href="#Contributors">Contributors</a>: People who have helped developing XBoard.
54 <li><a href="#CMail">CMail</a>: Using XBoard for electronic correspondence chess.
55 <li><a href="#Other-programs">Other programs</a>: Other programs you can use with XBoard.
57 <li><a href="#Copyright">Copyright</a>: Copyright notice for this manual.
58 <li><a href="#Copying">Copying</a>: The GNU General Public License.
60 <li><a href="#Index">Index</a>: Index of concepts and symbol names.
64 <a name="Major-modes"></a>
66 Next: <a rel="next" accesskey="n" href="#Basic-operation">Basic operation</a>,
67 Previous: <a rel="previous" accesskey="p" href="#Top">Top</a>,
68 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
72 <h2 class="chapter">1 Major modes</h2>
74 <p><a name="index-Major-modes-2"></a>
75 XBoard always runs in one of four major modes. You select the
76 major mode from the command line when you start up XBoard.
79 <dt>xboard [options]<dd>As an interface to GNU Chess or another chess engine running on your
80 machine, XBoard lets you play a game against the machine,
81 set up arbitrary positions, force variations, watch a game between two
82 chess engines, interactively analyze your stored games or set up and
83 analyze arbitrary positions. (Note: Not all chess engines support
85 <br><dt>xboard -ics -icshost hostname [options]<dd>As Internet Chess Server (ICS) interface, XBoard
86 lets you play against other ICS users, observe games
87 they are playing, or review games that have recently finished. Most
88 of the ICS "wild" chess variants are supported, including bughouse.
89 <br><dt>xboard -ncp [options]<dd>XBoard can also be used simply
90 as an electronic chessboard to play through games. It will read and
91 write game files and allow you to play through variations
92 manually. You can use it to browse games off the net or review games
93 you have saved. These features are also available in the other modes.
94 <br><dt>|pxboard<dd>If you want to pipe games into XBoard, use the supplied shell
95 script <samp><span class="file">pxboard</span></samp>. For example, from the news reader <samp><span class="file">xrn</span></samp>,
96 find a message with one or more games in it, click the Save button,
97 and type ‘<samp><span class="samp">|pxboard</span></samp>’ as the file name.
98 <br><dt>cmail [options]<dd>As an interface to electronic mail correspondence chess, XBoard
99 works with the cmail program. See <a href="#CMail">CMail</a> below for
104 <a name="Basic-operation"></a>
106 Next: <a rel="next" accesskey="n" href="#Menus">Menus</a>,
107 Previous: <a rel="previous" accesskey="p" href="#Major-modes">Major modes</a>,
108 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
112 <h2 class="chapter">2 Basic operation</h2>
114 <p><a name="index-Basic-operation-3"></a>
115 To move a piece, you can drag it with the left mouse button, or you
116 can click the left mouse button once on the piece, then once more on
117 the destination square. In crazyhouse, bughouse or shogi you can
118 drag and drop pieces to the board from the holdings squares
119 displayed next to the board.
121 <p>Old behavior, where right-clicking a square brings up a menu
122 where you can select what piece to drop on it can still be
123 selected through the ‘<samp><span class="samp">Drop Menu</span></samp>’ option.
124 Only in Edit Position mode right and middle clicking a square is still used to
125 put a piece on it, and the piece to drop is selected by sweeping
126 the mouse vertically with the button held down.
128 <p>The default function of the right mouse button in other modes is
129 to display the position the chess program thinks it will end up in.
130 While moving the mouse vertically with this button pressed
131 XBoard will step through the principal variation to show how
132 this position will be reached.
133 Lines of play displayed in the engine-output window,
134 or PGN variations in the comment window can similarly
135 be played out on the board, by right-clicking on them.
136 Only in Analysis mode, when you walk along a PV,
137 releasing the mouse button will forward the game upto that point,
138 like you entered all previous PV moves.
139 As the display of the PV in that case starts after the first move
140 a simple right-click will play the move the engine indicates.
142 <p>In Analysis mode you can also make a move by grabbing the piece
143 with a double-click of the left mouse button
144 (or while keeping the Ctrl key pressed).
145 In this case the move you enter will not be played,
146 but will be excluded from the analysis of the current position.
147 (Or included if it was already excluded; it is a toggle.)
148 This only works for engines that support this feature.
150 <p>When connected to an ICS, it is possible to call up a graphical
151 representation of players seeking a game in stead of the chess board,
152 when the latter is not in use
153 (i.e. when you are not playing or observing).
154 Left-clicking the display area will switch between this 'seek graph'
156 Hovering the mouse pointer over a dot will show the details of the
157 seek ad in the message field above the board.
158 Left-clicking the dot will challenge that player.
159 Right-clicking a dot will 'push it to the back',
160 to reveal any dots that were hidden behind it.
161 Right-clicking off dots will refresh the graph.
163 <p>Most other XBoard commands are available from the menu bar. The most
164 frequently used commands also have shortcut keys or on-screen buttons.
165 These shortcut keystrokes are mostly non-printable characters.
166 Typing a letter or digit while the board window has focus
167 will bring up a type-in box with the typed letter already in it.
168 You can use that to type a move in siuations where it is your
169 turn to enter a move,
170 type a move number to call up the position after that move
172 or, in Edit Position mode, type a FEN.
173 Some rarely used parameters can only be set through options on the
174 command line used to invoke XBoard.
176 <p>XBoard uses a settings file, in which it can remember any changes to
177 the settings that are made through menus or command-line options,
178 so they will still apply when you restart XBoard for another session.
179 The settings can be saved into this file automatically when XBoard exits,
180 or on explicit request of the user.
181 The default name for the settings file is /etc/xboard/xboard.conf,
182 but in a standard install this file is only used as a master settings
183 file that determines the system-wide default settings,
184 and defers reading and writing of user settings to a user-specific
185 file like ~/.xboardrc in the user's home directory.
187 <p>When XBoard is iconized, its graphical icon is a white knight if
188 it is White's turn to move, a black knight if it is Black's turn.
193 Next: <a rel="next" accesskey="n" href="#Options">Options</a>,
194 Previous: <a rel="previous" accesskey="p" href="#Basic-operation">Basic operation</a>,
195 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
199 <h2 class="chapter">3 Menus, buttons, and keys</h2>
201 <p><a name="index-Menus-4"></a>
204 <li><a accesskey="1" href="#File-Menu">File Menu</a>: Accessing external games and positions.
205 <li><a accesskey="2" href="#Edit-Menu">Edit Menu</a>: Altering games, positions, PGN tags or comments.
206 <li><a accesskey="3" href="#View-Menu">View Menu</a>: Controlling XBoard's shape and looks.
207 <li><a accesskey="4" href="#Mode-Menu">Mode Menu</a>: Selecting XBoard's mode.
208 <li><a accesskey="5" href="#Action-Menu">Action Menu</a>: Talking to the chess engine or ICS opponents.
209 <li><a accesskey="6" href="#Engine-Menu">Engine Menu</a>: Controlling settings and actions of the engine(s).
210 <li><a accesskey="7" href="#Options-Menu">Options Menu</a>: User preferences.
211 <li><a accesskey="8" href="#Help-Menu">Help Menu</a>: Getting help.
212 <li><a accesskey="9" href="#Keys">Keys</a>: Other shortcut keys.
216 <a name="File-Menu"></a>
218 Next: <a rel="next" accesskey="n" href="#Edit-Menu">Edit Menu</a>,
219 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
223 <h3 class="section">3.1 File Menu</h3>
225 <p><a name="index-File-Menu-5"></a><a name="index-Menu_002c-File-6"></a>
227 <dt>New Game<dd><a name="index-New-Game_002c-Menu-Item-7"></a>Resets XBoard and the chess engine to the beginning of a new chess
228 game. The <kbd>Ctrl-N</kbd> key is a keyboard equivalent. In Internet Chess
229 Server mode, clears the current state of XBoard, then
230 resynchronizes with the ICS by sending a refresh command. If you want to
231 stop playing, observing, or examining an ICS game, use an
232 appropriate command from the Action menu, not ‘<samp><span class="samp">New Game</span></samp>’.
233 See <a href="#Action-Menu">Action Menu</a>.
234 <br><dt>New Shuffle Game<dd><a name="index-New-Shuffle-Game_002c-Menu-Item-8"></a>Similar to ‘<samp><span class="samp">New Game</span></samp>’, but allows you to specify a particular initial position
235 (according to a standardized numbering system)
236 in chess variants which use randomized opening positions (e.g. Chess960).
237 You can also press the ‘<samp><span class="samp">Pick Fixed</span></samp>’ button to let XBoard generate
238 a random number for you.
239 The thus selected opening position will then persistently be chosen on any following
240 New Game command until you use this menu to select another.
241 Selecting position number -1 (or pushing the ‘<samp><span class="samp">Randomize</span></samp>’ button)
242 will produce a newly randomized position on any new game.
243 Using this menu item in variants that normally do not shuffle their opening position
244 does cause these variants to become shuffle variants until you use the
245 ‘<samp><span class="samp">New Shuffle Game</span></samp>’ menu to explicitly switch the randomization off,
246 or select a new variant.
247 <br><dt>New Variant<dd><a name="index-New-variant_002c-Menu-Item-9"></a>Allows you to select a new chess variant in non-ICS mode.
248 (In ICS play, the ICS is responsible for deciding which variant will be played,
249 and XBoard adapts automatically.) The shifted <kbd>Alt+V</kbd> key is a
250 keyboard equivalent. If you play with an engine, the engine must
251 be able to play the selected variant, or the command will be ignored.
252 XBoard supports all major variants, such as xiangqi, shogi, chess, chess960,
253 Capablanca Chess, shatranj, crazyhouse, bughouse.
254 But not every board size has built-in bitmaps for un-orthodox pieces!
255 Only sizes bulky (72) and middling (49) have all pieces,
256 while size petite (33) has most.
257 These sizes would have to be set at startup through the <code>size</code>
258 command-line option when you start up XBoard for such variants to be playable.
260 <p>You can overrule the default board format of the selected variant,
261 (e.g. to play suicide chess on a 6 x 6 board),
262 in this dialog, but normally you would not do that,
263 and leave them at '-1', which means 'default'.
264 <br><dt>Load Game<dd><a name="index-Load-Game_002c-Menu-Item-10"></a>Plays a game from a record file. The <kbd>Ctrl-O</kbd> key is a keyboard equivalent.
265 A pop-up dialog prompts you for the file name. If the file contains more
266 than one game, a second pop-up dialog
267 displays a list of games (with information drawn from their PGN tags, if
268 any), and you can select the one you want. Alternatively, you can load the
269 Nth game in the file directly, by typing the number <kbd>N</kbd> after the
270 file name, separated by a space.
272 <p>The game file parser will accept PGN (portable game notation),
273 or in fact almost any file that contains moves in algebraic
275 Notation of the form ‘<samp><span class="samp">P@f7</span></samp>’
276 is accepted for piece-drops in bughouse games;
277 this is a nonstandard extension to PGN.
278 If the file includes a PGN position (FEN tag), or an old-style
279 XBoard position diagram bracketed by ‘<samp><span class="samp">[--</span></samp>’ and ‘<samp><span class="samp">--]</span></samp>’
280 before the first move, the game starts from that position. Text
281 enclosed in parentheses, square brackets, or curly braces is assumed to
282 be commentary and is displayed in a pop-up window. Any other
283 text in the file is ignored. PGN variations (enclosed in
284 parentheses) also are treated as comments;
285 however, if you rights-click them in the comment window,
286 XBoard will shelve the current line, and load the the selected variation,
287 so you can step through it.
288 You can later revert to the previous line with the ‘<samp><span class="samp">Revert</span></samp>’ command.
289 This way you can walk quite complex varation trees with XBoard.
290 The nonstandard PGN tag [Variant "varname"] functions similarly to
291 the -variant command-line option (see below), allowing games in certain chess
292 variants to be loaded.
293 Note that it must appear before any FEN tag for XBoard to recognize
294 variant FENs appropriately.
295 There is also a heuristic to
296 recognize chess variants from the Event tag, by looking for the strings
297 that the Internet Chess Servers put there when saving variant ("wild") games.
298 <br><dt>Load Position<dd><a name="index-Load-Position_002c-Menu-Item-11"></a>Sets up a position from a position file. A pop-up dialog prompts
299 you for the file name. The shifted <kbd>Ctrl-O</kbd> key is a keyboard
300 equivalent. If the file contains more than one saved
301 position, and you want to load the Nth one, type the number N
302 after the file name, separated by a space. Position files must
303 be in FEN (Forsythe-Edwards notation), or in the format that the
304 Save Position command writes when oldSaveStyle is turned on.
305 <br><dt>Load Next Position<dd><a name="index-Load-Next-Position_002c-Menu-Item-12"></a>Loads the next position from the last position file you loaded.
306 The shifted <kbd>PgDn</kbd> key is a keyboard equivalent.
307 <br><dt>Load Previous Position<dd><a name="index-Load-Previous-Position_002c-Menu-Item-13"></a>Loads the previous position from the last position file you
308 loaded. The shifted <kbd>PgUp</kbd> key is a keyboard equivalent.
309 Not available if the last position was loaded from a pipe.
310 <br><dt>Save Game<dd><a name="index-Save-Game_002c-Menu-Item-14"></a>Appends a record of the current game to a file.
311 The <kbd>Ctrl-S</kbd> key is a keyboard equivalent.
313 prompts you for the file name. If the game did not begin with
314 the standard starting position, the game file includes the
315 starting position used. Games are saved in the PGN (portable
316 game notation) format, unless the oldSaveStyle option is true,
317 in which case they are saved in an older format that is specific
318 to XBoard. Both formats are human-readable, and both can be
319 read back by the ‘<samp><span class="samp">Load Game</span></samp>’ command.
320 Notation of the form ‘<samp><span class="samp">P@f7</span></samp>’
321 is accepted for piece-drops in bughouse games;
322 this is a nonstandard extension to PGN.
323 <br><dt>Save Position<dd><a name="index-Save-Position_002c-Menu-Item-15"></a>Appends a diagram of the current position to a file.
324 The shifted <kbd>Ctrl+S</kbd> key is a keyboard equivalent.
325 A pop-up dialog prompts you for the file name. Positions are saved in
326 FEN (Forsythe-Edwards notation) format unless the <code>oldSaveStyle</code>
327 option is true, in which case they are saved in an older,
328 human-readable format that is specific to XBoard. Both formats
329 can be read back by the ‘<samp><span class="samp">Load Position</span></samp>’ command.
330 <br><dt>Save Selected Games<dd><a name="index-Save-Selected-Games-16"></a>Will cause all games selected for display in the current Game List
331 to be appended to a file of the user's choice.
332 <br><dt>Save Games as Book<dd><a name="index-Save-Games-as-Book_002c-Menu-Item-17"></a>Creates an opening book from the currently loaded game file,
333 incorporating only the games currently selected in the Game List.
334 The book will be saved on the file specified in the ‘<samp><span class="samp">Common Engine</span></samp>’
336 The value of ‘<samp><span class="samp">Book Depth</span></samp>’ specified in that same dialog will
337 be used to determine how many moves of each game will be added to
338 the internal book buffer.
339 This command can take a long time to process,
340 and the size of the buffer is currently limited.
341 At the end the buffer will be saved as a Polyglot book,
342 but the buffer will not be cleared,
343 so that you can continue adding games from other game files.
344 <br><dt>Mail Move<dt>Reload CMail Message<dd><a name="index-Mail-Move_002c-Menu-Item-18"></a><a name="index-Reload-CMail-Message_002c-Menu-Item-19"></a>See <a href="#CMail">CMail</a>.
345 <br><dt>Exit<dd><a name="index-Exit_002c-Menu-Item-20"></a>Exits from XBoard. The <kbd>Ctrl-Q</kbd> key is a keyboard equivalent.
349 <a name="Edit-Menu"></a>
351 Next: <a rel="next" accesskey="n" href="#View-Menu">View Menu</a>,
352 Previous: <a rel="previous" accesskey="p" href="#File-Menu">File Menu</a>,
353 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
357 <h3 class="section">3.2 Edit Menu</h3>
359 <p><a name="index-Menu_002c-Edit-21"></a><a name="index-Edit-Menu-22"></a>
361 <dt>Copy Game<dd><a name="index-Copy-Game_002c-Menu-Item-23"></a>Copies a record of the current game to an internal clipboard in PGN
362 format and sets the X selection to the game text. The <kbd>Ctrl-C</kbd>
363 key is a keyboard equivalent. The game can be
364 pasted to another application (such as a text editor or another copy
365 of XBoard) using that application's paste command. In many X
366 applications, such as xterm and emacs, the middle mouse button can be
367 used for pasting; in XBoard, you must use the Paste Game command.
368 <br><dt>Copy Position<dd><a name="index-Copy-Position_002c-Menu-Item-24"></a>Copies the current position to an internal clipboard in FEN format and
369 sets the X selection to the position text. The shifted <kbd>Ctrl-C</kbd> key
370 is a keyboard equivalent. The position can be pasted
371 to another application (such as a text editor or another copy of
372 XBoard) using that application's paste command. In many X
373 applications, such as xterm and emacs, the middle mouse button can be
374 used for pasting; in XBoard, you must use the Paste Position command.
375 <br><dt>Copy Game List<dd><a name="index-Copy-Game-List_002c-Menu-Item-25"></a>Copies the current game list to the clipboard,
376 and sets the X selection to this text.
377 A format of comma-separated double-quoted strings is used,
379 so it can be easily imported into spread-sheet programs.
380 <br><dt>Paste Game<dd><a name="index-Paste-Game_002c-Menu-Item-26"></a>Interprets the current X selection as a game record and loads it, as
381 with Load Game. The <kbd>Ctrl-V</kbd> key is a keyboard equivalent.
382 <br><dt>Paste Position<dd><a name="index-Paste-Position_002c-Menu-Item-27"></a>Interprets the current X selection as a FEN position and loads it, as
383 with Load Position. The shifted <kbd>Ctrl-V</kbd> key is a keyboard equivalent.
384 <br><dt>Edit Game<dd><a name="index-Edit-Game_002c-Menu-Item-28"></a>Allows you to make moves for both Black and White, and to change
385 moves after backing up with the ‘<samp><span class="samp">Backward</span></samp>’ command. The clocks do
386 not run. The <kbd>Ctrl-E</kbd> key is a keyboard equivalent.
388 <p>In chess engine mode, the chess engine continues to check moves for legality
389 but does not participate in the game. You can bring the chess engine
390 into the game by selecting ‘<samp><span class="samp">Machine White</span></samp>’, ‘<samp><span class="samp">Machine Black</span></samp>’,
391 or ‘<samp><span class="samp">Two Machines</span></samp>’.
393 <p>In ICS mode, the moves are not sent to the ICS: ‘<samp><span class="samp">Edit Game</span></samp>’ takes
394 XBoard out of ICS Client mode and lets you edit games locally.
395 If you want to edit games on ICS in a way that other ICS users
396 can see, use the ICS <kbd>examine</kbd> command or start an ICS match
398 <br><dt>Edit Position<dd><a name="index-Edit-Position_002c-Menu-Item-29"></a>Lets you set up an arbitrary board position.
399 The shifted <kbd>Ctrl-E</kbd> key is a keyboard equivalent.
400 Use mouse button 1 to drag pieces to new squares, or to delete a piece
401 by dragging it off the board or dragging an empty square on top of it.
402 To drop a new piece on a square, press mouse button 2 or 3 over the
404 This puts a white or black pawn in the square, respectively,
405 but you can change that to any other piece type by dragging the
406 mouse down before you release the button.
407 You will then see the piece on the originally clicked square
408 cycle through the available pieces
409 (including those of opposite color),
410 and can release the button when you see the piece you want.
411 To alter the side to move, you can click the clock
412 (the words White and Black above the board)
413 of the side you want to give the move to.
414 To clear the board you can click the clock of the side that
415 alread has the move (which is highlighted in black).
416 The old behavior with a piece menu can still be configured
417 with the aid of the <code>pieceMenu</code> option.
418 Selecting ‘<samp><span class="samp">Edit Position</span></samp>’ causes XBoard to discard
419 all remembered moves in the current game.
421 <p>In ICS mode, changes made to the position by ‘<samp><span class="samp">Edit Position</span></samp>’ are
422 not sent to the ICS: ‘<samp><span class="samp">Edit Position</span></samp>’ takes XBoard out of
423 ‘<samp><span class="samp">ICS Client</span></samp>’ mode and lets you edit positions locally. If you want to
424 edit positions on ICS in a way that other ICS users can see, use
425 the ICS <kbd>examine</kbd> command, or start an ICS match against yourself.
426 (See also the ICS Client topic above.)
427 <br><dt>Edit Tags<dd><a name="index-Edit-Tags_002c-Menu-Item-30"></a>Lets you edit the PGN (portable game notation)
428 tags for the current game. After editing, the tags must still conform to
431 <pre class="example"> <tag-section> ::= <tag-pair> <tag-section>
433 <tag-pair> ::= [ <tag-name> <tag-value> ]
434 <tag-name> ::= <identifier>
435 <tag-value> ::= <string>
437 <p class="noindent">See the PGN Standard for full details. Here is an example:
439 <pre class="example"> [Event "Portoroz Interzonal"]
440 [Site "Portoroz, Yugoslavia"]
443 [White "Robert J. Fischer"]
444 [Black "Bent Larsen"]
447 <p class="noindent">Any characters that do not match this syntax are silently ignored. Note that
448 the PGN standard requires all games to have at least the seven tags shown
449 above. Any that you omit will be filled in by XBoard
450 with ‘<samp><span class="samp">?</span></samp>’ (unknown value), or ‘<samp><span class="samp">-</span></samp>’ (inapplicable value).
451 <br><dt>Edit Comment<dd><a name="index-Edit-Comment_002c-Menu-Item-31"></a>Adds or modifies a comment on the current position. Comments are
452 saved by ‘<samp><span class="samp">Save Game</span></samp>’ and are displayed by ‘<samp><span class="samp">Load Game</span></samp>’,
453 PGN variations will also be printed in this window,
454 and can be promoted to main line by right-clicking them.
455 ‘<samp><span class="samp">Forward</span></samp>’, and ‘<samp><span class="samp">Backward</span></samp>’.
456 <br><dt>Edit Book<dd><a name="index-Edit-Book_002c-Menu-Item-32"></a>Pops up a window listing the moves available in the GUI book
457 (specified in the ‘<samp><span class="samp">Common Engine Settings</span></samp>’ dialog)
458 from the currently displayed position,
459 together with their weights and (optionally in braces) learn info.
460 You can then edit this list, and the new list will be stored
461 back into the book when you press OK.
462 Note that the listed percentages are neither used, nor updated when
463 you change the weights; they are just there as an optical aid.
464 <br><dt>Revert<dt>Annotate<dd><a name="index-Revert_002c-Menu-Item-33"></a><a name="index-Annotate_002c-Menu-Item-34"></a>If you are examining an ICS game and Pause mode is off,
465 Revert issues the ICS command ‘<samp><span class="samp">revert</span></samp>’.
466 In local mode, when you were editing or analyzing a game,
467 and the <code>-variations</code> command-line option is switched on,
468 you can start a new variation by holding the Shift key down while
469 entering a move not at the end of the game.
470 Variations can also become the currently displayed line by
471 clicking a PGN variation displayed in the Comment window.
472 This can be applied recursively,
473 so that you can analyze variations on variations;
474 each time you create a new variation by entering an alternative move
475 with Shift pressed, or select a new one from the Comment window,
476 the current variation will be shelved.
477 ‘<samp><span class="samp">Revert</span></samp>’ allows you to return to the most recently shelved variation.
478 The difference between ‘<samp><span class="samp">Revert</span></samp>’ and ‘<samp><span class="samp">Annotate</span></samp>’
479 is that with the latter,
480 the variation you are now abandoning will be added as a comment
481 (in PGN variation syntax, i.e. between parentheses)
482 to the original move where you deviated, for later recalling.
483 The <kbd>Home</kbd> key is a keyboard equivalent to ‘<samp><span class="samp">Revert</span></samp>’.
484 <br><dt>Truncate Game<dd><a name="index-Truncate-Game_002c-Menu-Item-35"></a>Discards all remembered moves of the game beyond the current
485 position. Puts XBoard into ‘<samp><span class="samp">Edit Game</span></samp>’ mode if it was not there
487 The <kbd>End</kbd> key is a keyboard equivalent.
488 <br><dt>Backward<dd><a name="index-Backward_002c-Menu-Item-36"></a><a name="index-g_t_003c_002c-Button-37"></a>Steps backward through a series of remembered moves.
489 The ‘<samp><span class="samp">[<]</span></samp>’ button and the <kbd>Alt+LeftArrow</kbd> key are equivalents,
490 as is turning the mouse wheel towards you.
491 In addition, pressing the Control key steps back one move, and releasing
492 it steps forward again.
494 <p>In most modes, ‘<samp><span class="samp">Backward</span></samp>’ only lets you look back at old positions;
495 it does not retract moves. This is the case if you are playing against
496 a chess engine, playing or observing a game on an ICS, or loading a game.
497 If you select ‘<samp><span class="samp">Backward</span></samp>’ in any of these situations, you will not
498 be allowed to make a different move. Use ‘<samp><span class="samp">Retract Move</span></samp>’ or
499 ‘<samp><span class="samp">Edit Game</span></samp>’ if you want to change past moves.
501 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Backward</span></samp>’
502 depends on whether XBoard is in Pause mode. If Pause mode is
503 off, ‘<samp><span class="samp">Backward</span></samp>’ issues the ICS backward command, which backs up
504 everyone's view of the game and allows you to make a different
505 move. If Pause mode is on, ‘<samp><span class="samp">Backward</span></samp>’ only backs up your local
507 <br><dt>Forward<dd><a name="index-Forward_002c-Menu-Item-38"></a><a name="index-g_t_003e_002c-Button-39"></a>Steps forward through a series of remembered moves (undoing the
508 effect of ‘<samp><span class="samp">Backward</span></samp>’) or forward through a game file. The
509 ‘<samp><span class="samp">[>]</span></samp>’ button and the <kbd>Alt+RightArrow</kbd> key are equivalents,
510 as is turning the mouse wheel away from you.
512 <p>If you are examining an ICS game, the behavior of Forward
513 depends on whether XBoard is in Pause mode. If Pause mode is
514 off, ‘<samp><span class="samp">Forward</span></samp>’ issues the ICS forward command, which moves
515 everyone's view of the game forward along the current line. If
516 Pause mode is on, ‘<samp><span class="samp">Forward</span></samp>’ only moves your local view forward,
517 and it will not go past the position that the game was in when
519 <br><dt>Back to Start<dd><a name="index-Back-to-Start_002c-Menu-Item-40"></a><a name="index-g_t_003c_003c_002c-Button-41"></a>Jumps backward to the first remembered position in the game.
520 The ‘<samp><span class="samp">[<<]</span></samp>’ button and the <kbd>Alt+Home</kbd> key are equivalents.
522 <p>In most modes, Back to Start only lets you look back at old
523 positions; it does not retract moves. This is the case if you
524 are playing against a local chess engine, playing or observing a game on
525 a chess server, or loading a game. If you select ‘<samp><span class="samp">Back to Start</span></samp>’ in any
526 of these situations, you will not be allowed to make different
527 moves. Use ‘<samp><span class="samp">Retract Move</span></samp>’ or ‘<samp><span class="samp">Edit Game</span></samp>’ if you want to change past
528 moves; or use Reset to start a new game.
530 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Back to
531 Start</span></samp>’ depends on whether XBoard is in Pause mode. If Pause mode
532 is off, ‘<samp><span class="samp">Back to Start</span></samp>’ issues the ICS ‘<samp><span class="samp">backward 999999</span></samp>’
533 command, which backs up everyone's view of the game to the start and
534 allows you to make different moves. If Pause mode is on, ‘<samp><span class="samp">Back
535 to Start</span></samp>’ only backs up your local view.
536 <br><dt>Forward to End<dd><a name="index-Forward-to-End_002c-Menu-Item-42"></a><a name="index-g_t_003e_003e_002c-Button-43"></a>Jumps forward to the last remembered position in the game. The
537 ‘<samp><span class="samp">[>>]</span></samp>’ button and the <kbd>Alt+End</kbd> key are equivalents.
539 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Forward to
540 End</span></samp>’ depends on whether XBoard is in Pause mode. If Pause mode
541 is off, ‘<samp><span class="samp">Forward to End</span></samp>’ issues the ICS ‘<samp><span class="samp">forward 999999</span></samp>’
542 command, which moves everyone's view of the game forward to the end of
543 the current line. If Pause mode is on, ‘<samp><span class="samp">Forward to End</span></samp>’ only moves
544 your local view forward, and it will not go past the position
545 that the game was in when you paused.
549 <a name="View-Menu"></a>
551 Next: <a rel="next" accesskey="n" href="#Mode-Menu">Mode Menu</a>,
552 Previous: <a rel="previous" accesskey="p" href="#Edit-Menu">Edit Menu</a>,
553 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
557 <h3 class="section">3.3 View Menu</h3>
559 <p><a name="index-Menu_002c-View-44"></a><a name="index-View-Menu-45"></a>
561 <dt>Flip View<dd><a name="index-Flip-View_002c-Menu-Item-46"></a>Inverts your view of the chess board for the duration of the
562 current game. Starting a new game returns the board to normal.
563 The <kbd>F2</kbd> key is a keyboard equivalent.
564 <br><dt>Show Engine Output<dd><a name="index-Show-Engine-Output_002c-Menu-Item-47"></a>Shows or hides a window in which the thinking output of any loaded engines
565 is displayed. The shifted <kbd>Alt+O</kbd> key is a keyboard equivalent.
566 XBoard will display lines of thinking output of the same depth ordered by score,
567 (highest score on top), rather than in the order the engine produced them.
568 Usually this amounts to the same, as a normal engine search will only find new PV
569 (and emit it as thinking output)
570 when it searches a move with a higher score than the previous variation.
571 But when the engine is in multi-variation mode this needs not always be true,
572 and it is more convenient for someone analyzing games to see the moves sorted by score.
573 The order in which the engine found them is only of interest to the engine author,
574 and can still be deduced from the time or node count printed with the line.
575 Right-clicking a line in this window, and then moving the mouse vertically with the
576 right button kept down, will make XBoard play through the PV listed there.
577 The use of the board window as 'variation board' will normally end when
578 you release the right button,
579 or when the opponent plays a move.
580 But beware: in Analysis mode, moves thus played out will be added to the game.
581 The Engine-Output pane for each engine will contain a header displaying the
582 multi-PV status and a list of excluded moves in Analysis mode,
583 which are also responsive to right-clicking.
584 <br><dt>Show Move History<dd><a name="index-Show-Move-History_002c-Menu-Item-48"></a>Shows or hides a list of moves of the current game.
585 The shifted <kbd>Alt+H</kbd> key is a keyboard equivalent.
586 This list allows you to move the display to any earlier position in the game
587 by clicking on the corresponding move.
588 <br><dt>Show Evaluation Graph<dd><a name="index-Show-Evaluation-Graph_002c-Menu-Item-49"></a>Shows or hides a window which displays a graph of how the engine score(s)
589 evolved as a function of the move number.
590 The shifted <kbd>Alt+E</kbd> key is a keyboard equivalent.
591 Clicking on the graph will bring
592 the corresponding position in the board display.
593 <br><dt>Show Game List<dd><a name="index-Show-Game-List_002c-Menu-Item-50"></a>Shows or hides the list of games generated by the last ‘<samp><span class="samp">Load Game</span></samp>’
594 command. The shifted <kbd>Alt+G</kbd> key is a keyboard equivalent.
595 <br><dt>Tags<dd><a name="index-Tags_002c-Menu-Item-51"></a>Pops up a window which shows the PGN (portable game notation)
596 tags for the current game.
597 For now this is a duplicate of the ‘<samp><span class="samp">Edit Tags</span></samp>’ item in the ‘<samp><span class="samp">Edit</span></samp>’ menu.
598 <br><dt>Comments<dd><a name="index-Comments_002c-Menu-Item-52"></a>Pops up a window which shows any comments to or variations on the current move.
599 For now this is a duplicate of the ‘<samp><span class="samp">Edit Comment</span></samp>’ item in the ‘<samp><span class="samp">Edit</span></samp>’ menu.
600 <br><dt>ICS Input Box<dd><a name="index-ICS-Input-Box_002c-Menu-Item-53"></a>If this option is set in ICS mode,
602 creates an extra window that you can use for typing in ICS commands.
603 The input box is especially useful if you want to type in something long or do
604 some editing on your input, because output from ICS doesn't get mixed
605 in with your typing as it would in the main terminal window.
606 <br><dt>Open Chat Window<dd><a name="index-Open-Chat-Window_002c-Menu-Item-54"></a>This menu item opens a window in which you can conduct upto 5 chats
607 with other ICS users (or channels).
608 To use the window, write the name of your chat partner, the channel number,
609 or the words 'shouts', 'whispers', 'cshouts' in the upper field
610 (closing with <Enter>).
611 Everything you type in the lowest field will then automatically be sent to
612 the mentioned party, while everything that party sends to you will
613 appear in the central text box, rather than appear in the ICS console.
614 The row of buttons allow you to choose between chat;
615 to start a new chat, just select an empty button,
616 and complete the ‘<samp><span class="samp">Chat partner</span></samp>’ field.
617 <br><dt>Board<dd><a name="index-Board_002c-Menu-Item-55"></a>Summons a dialog where you can customize the look of the chess board.
618 Here you can specify the directory from which piece images should be taken,
619 when you don't want to use the built-in piece images
620 (see <code>pieceImageDirectory</code> option),
621 external images to be used for the board squares
622 (<code>liteBackTextureFile</code> and <code>darkBackTextureFile</code> options),
623 and square and piece colors for the default pieces.
624 <br><dt>Game List Tags<dd><a name="index-Game-List-Tags_002c-Menu-Item-56"></a>a duplicate of the Game List dialog in the Options menu.
628 <a name="Mode-Menu"></a>
630 Next: <a rel="next" accesskey="n" href="#Action-Menu">Action Menu</a>,
631 Previous: <a rel="previous" accesskey="p" href="#View-Menu">View Menu</a>,
632 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
636 <h3 class="section">3.4 Mode Menu</h3>
638 <p><a name="index-Menu_002c-Mode-57"></a><a name="index-Mode-Menu-58"></a>
640 <dt>Machine White<dd><a name="index-Machine-White_002c-Menu-Item-59"></a>Tells the chess engine to play White.
641 The <kbd>Ctrl-W</kbd> key is a keyboard equivalent.
642 <br><dt>Machine Black<dd><a name="index-Machine-Black_002c-Menu-Item-60"></a>Tells the chess engine to play Black.
643 The <kbd>Ctrl-B</kbd> key is a keyboard equivalent.
644 <br><dt>Two Machines<dd><a name="index-Two-Machines_002c-Menu-Item-61"></a>Plays a game between two chess engines.
645 The <kbd>Ctrl-T</kbd> key is a keyboard equivalent.
646 <br><dt>Analysis Mode<dd><a name="index-Analysis-Mode_002c-Menu-Item-62"></a><a name="index-null-move-63"></a>XBoard tells the chess engine to start analyzing the current game/position
647 and shows you the analysis as you move pieces around.
648 The <kbd>Ctrl-A</kbd> key is a keyboard equivalent.
649 Note: Some chess engines do not support Analysis mode.
651 <p>To set up a position to analyze, you do the following:
653 <p>1. Select Edit Position from the Mode Menu
655 <p>2. Set up the position. Use the middle and right buttons to
656 bring up the white and black piece menus.
658 <p>3. When you are finished, click on either the Black or White
659 clock to tell XBoard which side moves first.
661 <p>4. Select Analysis Mode from the Mode Menu to start the analysis.
663 <p>You can now play legal moves to create follow-up positions for the
664 engine to analyze, while the moves will be remembered as a stored game,
665 and then step backward through this game to take the moves back.
666 Note that you can also click on the clocks to set the opposite
667 side to move (adding a so-called ‘<samp><span class="samp">null move</span></samp>’ to the game).
669 <p>You can also tell the engine to exclude some moves from analysis.
670 (Engines that do not support the exclude-moves feature will
671 ignore this, however.)
672 The general way to do this is to play the move you want to exclude
673 starting with a double click on the piece.
674 When you use drag-drop moving, the piece you grab with a double click
675 will also remain on its square, to show you that you are not really
676 making the move, but just forbid it from the current position.
677 Playing a thus excluded move a second time will include it again.
678 Excluded moves will be listed as text in a header line in the
679 Engine Output window, and you can also re-include them by
680 right-clicking them there.
681 This header line will also contain the words 'best' and 'tail';
682 right-clicking those will exclude the currently best move,
683 or all moves not explicitly listed in the header line.
684 Once you leave the current position all memory of excluded
685 moves will be lost when you return there.
687 <p>Selecting this menu item while already in ‘<samp><span class="samp">Analysis Mode</span></samp>’ will
688 toggle the participation of the second engine in the analysis.
689 The output of this engine will then be shown in the lower pane
690 of the Engine Output window.
691 The analysis function can also be used when observing games on an ICS
692 with an engine loaded (zippy mode); the engine then will analyse
693 the positions as they occur in the observed game.
695 <br><dt>Analyze Game<dd><a name="index-Analyze-Game_002c-Menu-Item-64"></a>This option subjects the currently loaded game to automatic
696 analysis by the loaded engine.
697 The <kbd>Ctrl-G</kbd> key is a keyboard equivalent.
698 XBoard will start auto-playing the game from the currently displayed position,
699 while the engine is analyzing the current position.
700 The game will be annotated with the results of these analyses.
701 In particlar, the score and depth will be added as a comment,
702 and the PV will be added as a variation.
704 <p>Normally the analysis would stop after reaching the end of the game.
705 But when a game is loaded from a multi-game file
706 while ‘<samp><span class="samp">Analyze Game</span></samp>’ was already switched on,
707 the analysis will continue with the next game in the file
708 until the end of the file is reached (or you switch to another mode).
710 <p>The time the engine spends on analyzing each move can be controlled
711 through the command-line option ‘<samp><span class="samp">-timeDelay</span></samp>’,
712 which can also be set from the ‘<samp><span class="samp">Load Game Options</span></samp>’ menu dialog.
713 Note: Some chess engines do not support Analysis mode.
714 <br><dt>Edit Game<dd>Duplicate of the item in the Edit menu.
715 Note that ‘<samp><span class="samp">Edit Game</span></samp>’ is the idle mode of XBoard, and can be used
716 to get you out of other modes. E.g. to stop analyzing, stop a game
717 between two engines or stop editing a position.
718 <br><dt>Edit Position<dd>Duplicate of the item in the Edit menu.
719 <br><dt>Training<dd><a name="index-Training_002c-Menu-Item-65"></a>Training mode lets you interactively guess the moves of a game for one
720 of the players. You guess the next move of the game by playing the
721 move on the board. If the move played matches the next move of the
722 game, the move is accepted and the opponent's response is auto-played.
723 If the move played is incorrect, an error message is displayed. You
724 can select this mode only while loading a game (that is, after
725 selecting ‘<samp><span class="samp">Load Game</span></samp>’ from the File menu). While XBoard is in
726 ‘<samp><span class="samp">Training</span></samp>’ mode, the navigation buttons are disabled.
727 <br><dt>ICS Client<dd><a name="index-ICS-Client_002c-Menu-Item-66"></a>This is the normal mode when XBoard
728 is connected to a chess server. If you have moved into
729 Edit Game or Edit Position mode, you can select this option to get out.
731 <p>To use xboard in ICS mode, run it in the foreground with the -ics
732 option, and use the terminal you started it from to type commands and
733 receive text responses from the chess server. See
734 <a href="#Chess-Servers">Chess Servers</a> below for more information.
736 <p>XBoard activates some special position/game editing features when you
737 use the <kbd>examine</kbd> or <kbd>bsetup</kbd> commands on ICS and you have
738 ‘<samp><span class="samp">ICS Client</span></samp>’ selected on the Mode menu. First, you can issue the
739 ICS position-editing commands with the mouse. Move pieces by dragging
740 with mouse button 1. To drop a new piece on a square, press mouse
741 button 2 or 3 over the square. This brings up a menu of white pieces
742 (button 2) or black pieces (button 3). Additional menu choices let
743 you empty the square or clear the board. Click on the White or Black
744 clock to set the side to play. You cannot set the side to play or
745 drag pieces to arbitrary squares while examining on ICC, but you can
746 do so in <kbd>bsetup</kbd> mode on FICS. In addition, the menu commands
747 ‘<samp><span class="samp">Forward</span></samp>’, ‘<samp><span class="samp">Backward</span></samp>’, ‘<samp><span class="samp">Pause</span></samp>’, and ‘<samp><span class="samp">Stop Examining</span></samp>’
748 have special functions in this mode; see below.
749 <br><dt>Machine Match<dd><a name="index-Machine-match_002c-Menu-Item-67"></a>Starts a match between two chess programs,
750 with a number of games and other parameters set through
751 the ‘<samp><span class="samp">Match Options</span></samp>’ menu dialog.
752 When a match is already running, selecting this item will make
753 XBoard drop out of match mode after the current game finishes.
754 <br><dt>Pause<dd><a name="index-Pause_002c-Menu-Item-68"></a>Pauses updates to the board, and if you are playing against a chess engine,
755 also pauses your clock. To continue, select ‘<samp><span class="samp">Pause</span></samp>’ again, and the
756 display will automatically update to the latest position.
757 The ‘<samp><span class="samp">P</span></samp>’ button and keyboard <kbd>Pause</kbd> key are equivalents.
759 <p>If you select Pause when you are playing against a chess engine and
760 it is not your move, the chess engine's clock
761 will continue to run and it will eventually make a move, at which point
762 both clocks will stop. Since board updates are paused, however,
763 you will not see the move until you exit from Pause mode (or select Forward).
764 This behavior is meant to simulate adjournment with a sealed move.
766 <p>If you select Pause while you are observing or examining a game on a
767 chess server, you can step backward and forward in the current history
768 of the examined game without affecting the other observers and
769 examiners, and without having your display jump forward to the latest
770 position each time a move is made. Select Pause again to reconnect
771 yourself to the current state of the game on ICS.
773 <p>If you select ‘<samp><span class="samp">Pause</span></samp>’ while you are loading a game, the game stops
774 loading. You can load more moves manually by selecting ‘<samp><span class="samp">Forward</span></samp>’, or
775 resume automatic loading by selecting ‘<samp><span class="samp">Pause</span></samp>’ again.
779 <a name="Action-Menu"></a>
781 Next: <a rel="next" accesskey="n" href="#Engine-Menu">Engine Menu</a>,
782 Previous: <a rel="previous" accesskey="p" href="#Mode-Menu">Mode Menu</a>,
783 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
787 <h3 class="section">3.5 Action Menu</h3>
789 <p><a name="index-Menu_002c-Action-69"></a><a name="index-Action_002c-Menu-70"></a>
791 <dt>Accept<dd><a name="index-Accept_002c-Menu-Item-71"></a>Accepts a pending match offer.
792 The <kbd>F3</kbd> key is a keyboard equivalent.
793 If there is more than one offer
794 pending, you will have to type in a more specific command
795 instead of using this menu choice.
796 <br><dt>Decline<dd><a name="index-Decline_002c-Menu-Item-72"></a>Declines a pending offer (match, draw, adjourn, etc.).
797 The <kbd>F4</kbd> key is a keyboard equivalent. If there
798 is more than one offer pending, you will have to type in a more
799 specific command instead of using this menu choice.
800 <br><dt>Call Flag<dd><a name="index-Call-Flag_002c-Menu-Item-73"></a>Calls your opponent's flag, claiming a win on time, or claiming
801 a draw if you are both out of time.
802 The <kbd>F5</kbd> key is a keyboard equivalent.
803 You can also call your
804 opponent's flag by clicking on his clock.
805 <br><dt>Draw<dd><a name="index-Draw_002c-Menu-Item-74"></a>Offers a draw to your opponent, accepts a pending draw offer
806 from your opponent, or claims a draw by repetition or the 50-move
807 rule, as appropriate. The <kbd>F6</kbd> key is a keyboard equivalent.
808 <br><dt>Adjourn<dd><a name="index-Adjourn_002c-Menu-Item-75"></a>Asks your opponent to agree to adjourning the current game, or
809 agrees to a pending adjournment offer from your opponent.
810 The <kbd>F7</kbd> key is a keyboard equivalent.
811 <br><dt>Abort<dd><a name="index-Abort_002c-Menu-Item-76"></a>Asks your opponent to agree to aborting the current game, or
812 agrees to a pending abort offer from your opponent.
813 The <kbd>F8</kbd> key is a keyboard equivalent. An aborted
814 game ends immediately without affecting either player's rating.
815 <br><dt>Resign<dd><a name="index-Resign_002c-Menu-Item-77"></a>Resigns the game to your opponent. The <kbd>F9</kbd> key is a
817 <br><dt>Stop Observing<dd><a name="index-Stop-Observing_002c-Menu-Item-78"></a>Ends your participation in observing a game, by issuing the ICS
818 observe command with no arguments. ICS mode only.
819 The <kbd>F10</kbd> key is a keyboard equivalent.
820 <br><dt>Stop Examining<dd><a name="index-Stop-Examining_002c-Menu-Item-79"></a>Ends your participation in examining a game, by issuing the ICS
821 unexamine command. ICS mode only.
822 The <kbd>F11</kbd> key is a keyboard equivalent.
823 <br><dt>Upload to Examine<dd><a name="index-Upload-to-Examine_002c-Menu-Item-80"></a>Create an examined game of the proper variant on the ICS,
824 and send the game there that is currenty loaded in XBoard
825 (e.g. through pasting or loading from file).
826 You must be connected to an ICS for this to work.
827 <br><dt>Adjudicate to White<dt>Adjudicate to Black<dt>Adjudicate Draw<dd><a name="index-Adjudicate-to-White_002c-Menu-Item-81"></a><a name="index-Adjudicate-to-Black_002c-Menu-Item-82"></a><a name="index-Adjudicate-Draw_002c-Menu-Item-83"></a>Terminate an ongoing game in Two-Machines mode (including match mode),
828 with as result a win for white, for black, or a draw, respectively.
829 The PGN file of the game will accompany the result string
830 by the comment "user adjudication".
834 <a name="Engine-Menu"></a>
836 Next: <a rel="next" accesskey="n" href="#Options-Menu">Options Menu</a>,
837 Previous: <a rel="previous" accesskey="p" href="#Action-Menu">Action Menu</a>,
838 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
842 <h3 class="section">3.6 Engine Menu</h3>
844 <p><a name="index-Engine-Menu-84"></a><a name="index-Menu_002c-Engine-85"></a>
846 <dt>Load Engine<dd><a name="index-Load-Engine_002c-Menu-Item-86"></a>Pops up a dialog where you can select or specify an engine to be loaded.
847 You will always have to indicate whether you want to load the engine
848 as first or second engine, through the ‘Load menitioned engine as’
849 drop-down list at the bottom of the dialog.
850 You can even replace engines during a game, without disturbing that game.
851 (Beware that after loading an engine, XBoard will always be in Edit Game mode,
852 so you will have to tell the new engine what to do before it does anything!)
853 When you select an already installed engine from the ‘Select Engine from List’
855 all other fields of the dialog will be ignored.
856 In other cases, you have to specify the engine executable,
857 possible arguments on the engine command line
858 (if the engine docs say the engine needs any),
859 and the directory where the engine should look for its files
860 (if this cannot be deduced automatically from the specification of the engine executable).
861 You will also have to specify (with the aid of checkboxes) if the engine is UCI.
862 If ‘Add this engine to the list’ is ticked (which it is by default),
863 the engine will be added to the list of installed engines in your settings file,
864 (provided you save the settings!),
865 so that next time you can select it from the drop-down list.
866 You can also specify a ‘nickname’,
867 under which the engine will then appear in that drop-down list,
868 and even choose to use that nickname for it in PGN files for engine-engine games.
869 The info you supply with the checkboxes whether the engine should use GUI book,
870 or (for variant engines) automatically switch to the current variant when loaded,
871 will also be included in the list.
872 For obsolete XBoard engines, which would normally take a long delay to load
873 because XBoard is waiting for a response they will not give,
874 you can tick ‘WB protocol v1’ to speed up the loading process.
875 <br><dt>Engine #N Settings<dd><a name="index-Engine-Settings_002c-Menu-Item-87"></a><a name="index-Engine-_00231-Settings_002c-Menu-Item-88"></a><a name="index-Engine-_00232-Settings_002c-Menu-Item-89"></a>Pop up a menu dialog to alter the settings specific to the applicable engine.
876 (The second engine is only accessible once it has been used in Two-Machines mode.)
877 For each parameter the engine allows to be set,
878 a control element will appear in this dialog that can be used to alter the value.
879 Depending on the type of parameter (text string, number, multiple choice,
880 on/off switch, instantaneous signal) the appropriate control will appear,
881 with a description next to it.
882 XBoard has no idea what these values mean; it just passes them on to the engine.
883 How this dialog looks is completely determined by the engine,
884 and XBoard just passes it on to the user.
885 Many engines do not have any parameters that can be set by the user,
886 and in that case the dialog will be empty (except for the OK and cancel buttons).
887 UCI engines usually have many parameters. (But these are only visible with
888 a sufficiently modern version of the Polyglot adapter needed to run UCI engines,
889 e.g. Polyglot 1.4.55b.) For native XBoard engines this is less common.
890 <br><dt>Hint<dd><a name="index-Hint_002c-Menu-Item-90"></a>Displays a move hint from the chess engine.
891 <br><dt>Book<dd><a name="index-Book_002c-Menu-Item-91"></a>Displays a list of possible moves from the chess engine's opening
892 book. The exact format depends on what chess engine you are using.
893 With GNU Chess 4, the first column gives moves, the second column
894 gives one possible response for each move, and the third column shows
895 the number of lines in the book that include the move from the first
896 column. If you select this option and nothing happens, the chess
897 engine is out of its book or does not support this feature.
898 <br><dt>Move Now<dd><a name="index-Move-Now_002c-Menu-Item-92"></a>Forces the chess engine to move immediately. Chess engine mode only.
899 The <kbd>Ctrl-M</kbd> key is a keyboard equivalent.
900 <br><dt>Retract Move<dd><a name="index-Retract-Move_002c-Menu-Item-93"></a>Retracts your last move. In chess engine mode, you can do this only
901 after the chess engine has replied to your move; if the chess engine is still
902 thinking, use ‘<samp><span class="samp">Move Now</span></samp>’ first. In ICS mode, ‘<samp><span class="samp">Retract Move</span></samp>’
903 issues the command ‘<samp><span class="samp">takeback 1</span></samp>’ or ‘<samp><span class="samp">takeback 2</span></samp>’
904 depending on whether it is your opponent's move or yours.
905 The <kbd>Ctrl-X</kbd> key is a keyboard equivalent.
906 <br><dt>Recently Used Engines<dd><a name="index-Recently-Used-Engines_002c-In-Menu-94"></a>At the bottom of the engine menu there can be a list of names
907 of engines that you recently loaded through the Load Engine menu dialog
908 in previous sessions.
909 Clicking on such a name will load that engine as first engine,
910 so you won't have to search for it in your list of installed engines,
911 if that is very long.
912 The maximum number of displayed engine names is set by the
913 <code>recentEngines</code>command-line option.
917 <a name="Options-Menu"></a>
919 Next: <a rel="next" accesskey="n" href="#Help-Menu">Help Menu</a>,
920 Previous: <a rel="previous" accesskey="p" href="#Engine-Menu">Engine Menu</a>,
921 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
925 <h3 class="section">3.7 Options Menu</h3>
927 <p><a name="index-Menu_002c-Options-95"></a><a name="index-Options-Menu-96"></a>
929 <h4 class="subsection">3.7.1 General Options</h4>
931 <p><a name="index-General-Options_002c-Menu-Item-97"></a>The following items to set option values appear in the dialog
932 summoned by the general Options menu item.
934 <dt>Absolute Analysis Scores<dd><a name="index-Absolute-Analysis-Scores_002c-Menu-Item-98"></a>Controls if scores on the Engine Output window during analysis
935 will be printed from the white or the side-to-move point-of-view.
936 <br><dt>Almost Always Queen<dd><a name="index-Almost-Always-Queen_002c-Menu-Item-99"></a>If this option is on, 7th-rank pawns automatically change into
937 Queens when you pick them up,
938 and when you drag them to the promotion square and release them there,
939 they will promote to that.
940 But when you drag such a pawn backwards first,
941 its identity will start to cycle through the other available pieces.
942 This will continue until you start to move it forward;
943 at which point the identity of the piece will be fixed,
944 so that you can safely put it down on the promotion square.
945 If this option is off, what happens depends on the
946 option <code>alwaysPromoteToQueen</code>,
947 which would force promotion to Queen when true.
948 Otherwise XBoard would bring up a dialog
949 box whenever you move a pawn to the last rank, asking what piece
950 you want to promote to.
951 <br><dt>Animate Dragging<dd><a name="index-Animate-Dragging_002c-Menu-Item-100"></a>If Animate Dragging is on, while you are dragging a piece with the
952 mouse, an image of the piece follows the mouse cursor.
953 If Animate Dragging is off, there is no visual feedback while you are
954 dragging a piece, but if Animate Moving is on, the move will be
955 animated when it is complete.
956 <br><dt>Animate Moving<dd><a name="index-Animate-Moving_002c-Menu-Item-101"></a>If Animate Moving is on, all piece moves are animated. An image of the
957 piece is shown moving from the old square to the new square when the
958 move is completed (unless the move was already animated by Animate Dragging).
959 If Animate Moving is off, a moved piece instantly disappears from its
960 old square and reappears on its new square when the move is complete.
961 The shifted <kbd>Ctrl-A</kbd> key is a keyboard equivalent.
962 <br><dt>Auto Flag<dd><a name="index-Auto-Flag_002c-Menu-Item-102"></a>If this option is on and one player runs out of time
965 will automatically call his flag, claiming a win on time.
966 The shifted <kbd>Ctrl-F</kbd> key is a keyboard equivalent.
967 In ICS mode, Auto Flag will only call your opponent's flag, not yours,
968 and the ICS may award you a draw instead of a win if you have
969 insufficient mating material. In local chess engine mode,
971 may call either player's flag and will not take material into account (?).
972 <br><dt>Auto Flip View<dd><a name="index-Auto-Flip-View_002c-Menu-Item-103"></a>If the Auto Flip View option is on when you start a game, the board
973 will be automatically oriented so that your pawns move from the bottom
974 of the window towards the top.
976 <p>If you are playing a game on an ICS, the board is always
977 oriented at the start of the game so that your pawns move from
978 the bottom of the window towards the top. Otherwise, the starting
979 orientation is determined by the <code>flipView</code> command line option;
980 if it is false (the default), White's pawns move from bottom to top
981 at the start of each game; if it is true, Black's pawns move from
982 bottom to top. See <a href="#User-interface-options">User interface options</a>.
983 <br><dt>Blindfold<dd><a name="index-Blindfold_002c-Menu-Item-104"></a>If this option is on, XBoard displays the board as usual but does
984 not display pieces or move highlights. You can still move in the
985 usual way (with the mouse or by typing moves in ICS mode), even though
986 the pieces are invisible.
987 <br><dt>Drop Menu<dd><a name="index-Drop-Menu_002c-Menu-Item-105"></a>Controls if right-clicking the board in crazyhouse / bughouse
988 will pop up a menu to drop a piece on the clicked square
989 (old, deprecated behavior)
990 or allow you to step through an engine PV
991 (new, recommended behavior).
992 <br><dt>Enable Variation Trees<dd><a name="index-Enable-Variation-Trees_002c-Menu-Item-106"></a>If this option is on, playing a move in Edit Game or Analyze mode
993 while keeping the Shift key pressed will start a new variation.
994 You can then recall the previous line through the ‘<samp><span class="samp">Revert</span></samp>’ menu item.
995 When off, playing a move will truncate the game and append the move
997 <br><dt>Hide Thinking<dd><a name="index-Hide-Thinking_002c-Menu-Item-107"></a>If this option is off, the chess engine's notion of the score and best
998 line of play from the current position is displayed as it is
999 thinking. The score indicates how many pawns ahead (or if negative,
1000 behind) the chess engine thinks it is. In matches between two
1001 machines, the score is prefixed by ‘<samp><span class="samp">W</span></samp>’ or ‘<samp><span class="samp">B</span></samp>’ to indicate
1002 whether it is showing White's thinking or Black's, and only the thinking
1003 of the engine that is on move is shown.
1004 The shifted <kbd>Ctrl-H</kbd> key is a keyboard equivalent.
1005 <br><dt>Highlight Last Move<dd><a name="index-Highlight-Last-Move_002c-Menu-Item-108"></a>If Highlight Last Move is on, after a move is made, the starting and
1006 ending squares remain highlighted. In addition, after you use Backward
1007 or Back to Start, the starting and ending squares of the last move to
1008 be unmade are highlighted.
1009 <br><dt>Highlight with Arrow<dd><a name="index-Highlight-with-Arrow_002c-Menu-Item-109"></a>Causes the highlighting described in Highlight Last Move to be done
1010 by drawing an arrow between the highlighted squares,
1011 so that it is visible even when the width of the grid lines is set to zero.
1012 <br><dt>Move Sound<dd><a name="index-Move-Sound_002c-Menu-Item-110"></a>Enables the sounding of an audible signal when the computer performs a move.
1013 For the selection of the sound, see ‘<samp><span class="samp">Sound Options</span></samp>’.
1014 If you turn on this option when using XBoard with the Internet
1015 Chess Server, you will probably want to give the
1016 <kbd>set bell 0</kbd>
1017 command to the ICS, since otherwise the ICS will ring the terminal bell
1018 after every move (not just yours). (The <samp><span class="file">.icsrc</span></samp> file
1019 is a good place for this; see <a href="#ICS-options">ICS options</a>.)
1020 <br><dt>One-Click Moving<dd><a name="index-One_002dClick-Moving_002c-Menu-Item-111"></a>If this option is on, XBoard does not wait for you to click both the
1021 from- and the to-square, or drag the piece, but performs a move as soon
1022 as it is uniqely specified.
1023 This applies to clicking an own piece that only has a single legal move,
1024 clicking an empty square or opponent piece where only one of your pieces
1025 can move (or capture) to.
1026 Furthermore, a double-click on a piece that can only make a single capture
1027 will cause that capture to be made.
1028 Promoting a Pawn by clicking its to-square will suppress the promotion
1029 popup or other methods for selecting an under-promotion,
1030 and make it promote to Queen.
1031 <br><dt>Periodic Updates<dd><a name="index-Periodic-Updates_002c-Menu-Item-112"></a>If this option is off (or if
1032 you are using a chess engine that does not support periodic updates),
1034 will only be updated when the analysis changes. If this option is
1035 on, the Analysis Window will be updated every two seconds.
1036 <br><dt>Play Move(s) of Clicked PV<dd><a name="index-Play-Move_0028s_0029-of-Clicked-PV_002c-Menu-Item-113"></a>If this option is on, right-clicking a PV in the Engine Output window
1037 during Analyze mode will cause the first move of that PV to be played.
1038 You could also play more than one (or no) PV move by moving the mouse
1039 to engage in the PV walk such a right-click will start,
1040 to seek out another position along the PV where you want to continue
1041 the analysis, before releasing the mouse button.
1042 <br><dt>Ponder Next Move<dd><a name="index-Ponder-Next-Move_002c-Menu-Item-114"></a>If this option is off, the chess engine will think only when it is on
1043 move. If the option is on, the engine will also think while waiting
1044 for you to make your move.
1045 The shifted <kbd>Ctrl-P</kbd> key is a keyboard equivalent.
1046 <br><dt>Popup Exit Message<dd><a name="index-Popup-Exit-Message_002c-Menu-Item-115"></a>If this option is on, when XBoard wants to display a message just
1047 before exiting, it brings up a modal dialog box and waits for you to
1048 click OK before exiting. If the option is off, XBoard prints the
1049 message to standard error (the terminal) and exits immediately.
1050 <br><dt>Popup Move Errors<dd><a name="index-Popup-Move-Errors_002c-Menu-Item-116"></a>If this option is off, when you make an error in moving (such as
1051 attempting an illegal move or moving the wrong color piece), the
1052 error message is displayed in the message area. If the option is
1053 on, move errors are displayed in small pop-up windows like other errors.
1054 You can dismiss an error pop-up either by clicking its OK button or by
1055 clicking anywhere on the board, including down-clicking to start a move.
1056 <br><dt>Scores in Move List<dd><a name="index-Scores-in-Move-List_002c-Menu-Item-117"></a>If this option is on, XBoard will display the depth and score
1057 of engine moves in the Move List, in the format of a PGN comment.
1058 <br><dt>Show Coords<dd><a name="index-Show-Coords_002c-Menu-Item-118"></a>If this option is on, XBoard displays algebraic coordinates
1059 along the board's left and bottom edges.
1060 <br><dt>Show Target Squares<dd><a name="index-Show-Target-Squares_002c-Menu-Item-119"></a>If this option is on, all squares a piece that is 'picked up' with the mouse
1061 can legally move to are highighted with a fat colored dot in the
1062 highlightColor (non-captures) or premoveHighlightColor (captures).
1063 Legality testing must be on for XBoard to know how the piece moves.
1064 <br><dt>Test Legality<dd><a name="index-Test-Legality_002c-Menu-Item-120"></a>If this option is on, XBoard tests whether the moves you try to make
1065 with the mouse are legal and refuses to let you make an illegal move.
1066 The shifted <kbd>Ctrl-L</kbd> key is a keyboard equivalent.
1067 Moves loaded from a file with ‘<samp><span class="samp">Load Game</span></samp>’ are also checked. If
1068 the option is off, all moves are accepted, but if a local chess engine
1069 or the ICS is active, they will still reject illegal moves. Turning
1070 off this option is useful if you are playing a chess variant with
1071 rules that XBoard does not understand. (Bughouse, suicide, and wild
1072 variants where the king may castle after starting on the d file are
1073 generally supported with Test Legality on.)
1074 <br><dt>Flash Moves<dt>Flash Rate<dd><a name="index-Flash-Moves_002c-Menu-Item-121"></a><a name="index-Flash-Rate_002c-Menu-Item-122"></a>If this option is non-zero, whenever a move is completed,
1075 the moved piece flashes the specified number of times.
1076 The flash-rate setting determines how rapidly this flashing occurs.
1077 <br><dt>Animation Speed<dd><a name="index-Animation-Speed_002c-Menu-Item-123"></a>Determines the duration (in msec) of an animation step,
1078 when ‘<samp><span class="samp">Animate Moving</span></samp>’ is swiched on.
1079 <br><dt>Zoom factor in Evaluation Graph<dd><a name="index-Zoom-factor-in-Evaluation-Graph_002c-Menu-Item-124"></a>Sets the valueof the <code>evalZoom</code> option,
1080 indicating the factor by which the score interval (-1,1) should be
1081 blown up on the vertical axis of the Evaluation Graph.
1084 <h4 class="subsection">3.7.2 Time Control</h4>
1086 <p><a name="index-Time-Control_002c-Menu-Item-125"></a>Pops up a sub-menu where you can set the time-control parameters interactively.
1087 Allows you to select classical or incremental time controls,
1088 set the moves per session, session duration, and time increment.
1089 Also allows specification of time-odds factors for one or both engines.
1090 If an engine is given a time-odds factor N, all time quota it gets,
1091 be it at the beginning of a session or through the time increment or
1092 fixed time per move, will be divided by N.
1093 The shifted <kbd>Alt+T</kbd> key is a keyboard equivalent.
1095 <h4 class="subsection">3.7.3 Common Engine</h4>
1097 <p><a name="index-Common-Engine_002c-Menu-Item-126"></a>Pops up a sub-menu where you can set some engine parameters common to most engines,
1098 such as hash-table size, tablebase cache size, maximum number of processors
1099 that SMP engines can use, and where to find the Polyglot adapter needed
1100 to run UCI engines under XBoard. The feature that allows setting of these parameters on
1101 engines is new since XBoard 4.3.15, so not many XBoard/WinBoard engines respond
1102 to it yet, but UCI engines should.
1104 <p>It is also possible to specify a GUI opening book here, i.e. an opening
1105 book that XBoard consults for any position a playing engine gets in.
1106 It then forces the engine to play the book move, rather than to think up its own,
1107 if that position is found in the book.
1108 The book can switched on and off independently for either engine.
1109 The way book moves are chosen can be influenced through the settings of
1110 book depth and variety.
1111 After both sides have played more moves than the specified depth,
1112 the book will no longer be consulted.
1113 When the variety is set to 50, moves will be played with the probability
1114 specified in the book.
1115 When set to 0, only the move(s) with the highest probability will be played.
1116 When set to 100, all listed moves will be played with equal pobability.
1117 Other settings interpolate between that.
1118 The shifted <kbd>Alt+U</kbd> key is a keyboard equivalent.
1120 <h4 class="subsection">3.7.4 Adjudications</h4>
1122 <p><a name="index-Adjudications_002c-Menu-Item-127"></a>Pops up a sub-menu where you can enable or disable various adjudications
1123 that XBoard can perform in engine-engine games.
1124 The shifted <kbd>Alt+J</kbd> key is a keyboard equivalent.
1125 You can instruct XBoard to detect and terminate the game on checkmate
1126 or stalemate, even if the engines would not do so, to verify engine
1127 result claims (forfeiting engines that make false claims), rather than
1128 naively following the engine, to declare draw on positions
1129 which can never be won for lack of mating material, (e.g. KBK),
1130 or which are impossible to win unless the opponent seeks its own demise
1132 For these adjudications to work, ‘<samp><span class="samp">Test Legality</span></samp>’ should be switched on.
1133 It is also possible to instruct XBoard to enforce a 50-move or 3-fold-repeat
1134 rule and automatically declare draw (after a user-adjustable number of moves
1135 or repeats) even if the engines are prepared to go on.
1136 It is also possible to have XBoard declare draw on games that seem to drag on
1137 forever, or adjudicate a loss if both engines agree (for 3 consecutive moves) that one
1138 of them is behind more than a user-adjustable score threshold.
1139 For the latter adjudication to work, XBoard should be able to properly understand
1140 the engine's scores. To facilitate the latter, you can inform xboard here if
1141 the engines report scores from the viewpoint of white, or from that of their own color.
1143 <h4 class="subsection">3.7.5 ICS Options</h4>
1145 <p><a name="index-ICS-Options_002c-Menu-Item-128"></a>The following options occur in a dialog summoned by the
1146 ICS Options menu item.
1148 <dt>Auto Kibitz<dd><a name="index-Auto-Kibitz_002c-Menu-Item-129"></a>Setting this option when playing with or aginst a chess program on an ICS
1149 will cause the last line of thinking output of the engine before its move
1150 to be sent to the ICS in a kibitz command.
1151 In addition, any kibitz message received through the ICS from
1152 an opponent chess program will be diverted to the engine-output window,
1153 (and suppressed in the console),
1154 where you can play through its PV by right-clicking it.
1155 <br><dt>Auto Comment<dd><a name="index-Auto-Comment_002c-Menu-Item-130"></a>If this option is on, any remarks made on ICS while you are observing or
1156 playing a game are recorded as a comment on the current move. This includes
1157 remarks made with the ICS commands <kbd>say</kbd>, <kbd>tell</kbd>, <kbd>whisper</kbd>,
1158 and <kbd>kibitz</kbd>.
1159 Limitation: remarks that you type yourself are not recognized;
1160 XBoard scans only the output from ICS, not the input you type to it.
1161 <br><dt>Auto Observe<dd><a name="index-Auto-Observe_002c-Menu-Item-131"></a>If this option is on and you add a player to your <code>gnotify</code>
1162 list on ICS, XBoard will automatically observe all of that
1163 player's games, unless you are doing something else (such as
1164 observing or playing a game of your own) when one starts.
1165 The games are displayed
1166 from the point of view of the player on your gnotify list; that is, his
1167 pawns move from the bottom of the window towards the top.
1168 Exceptions: If both players in a game are on your gnotify list, if
1170 <code>highlight</code>
1171 variable is set to 0, or if the ICS you are using does not
1172 properly support observing from Black's point of view,
1173 you will see the game from White's point of view.
1174 <br><dt>Auto Raise Board<dd><a name="index-Auto-Raise-Board_002c-Menu-Item-132"></a>If this option is on, whenever a new game begins, the chessboard window
1175 is deiconized (if necessary) and raised to the top of the stack of windows.
1176 <br><dt>Auto Save<dd><a name="index-Auto-Save_002c-Menu-Item-133"></a>If this option is true, at the end of every game XBoard prompts
1177 you for a file name and appends a record of the game to the file
1179 Disabled if the <code>saveGameFile</code> command-line
1180 option is set, as in that case all games are saved to the specified file.
1181 See <a href="#Load-and-Save-options">Load and Save options</a>.
1182 <br><dt>Background Observe<dd><a name="index-Background-Observe_002c-Menu-Item-134"></a>Setting this option will make XBoard suppress display of any boards
1183 from observed games while you are playing.
1184 In stead the last such board will be remembered,
1185 and shown to you when you right-click the board.
1186 This allows you to peek at your bughouse partner's game when you want,
1187 without disturbing your own game too much.
1188 <br><dt>Dual Board<dd><a name="index-Dual-Board_002c-Menu-Item-135"></a>Setting this option in combination with ‘<samp><span class="samp">Background Observe</span></samp>’
1189 will display boards of observed games while you are playing
1190 on a second board next to that of your own game.
1191 <br><dt>Get Move List<dd><a name="index-Get-Move-List_002c-Menu-Item-136"></a>If this option is on, whenever XBoard
1192 receives the first board of a new ICS game (or a different game from
1193 the one it is currently displaying), it
1194 retrieves the list of past moves from the ICS.
1195 You can then review the moves with the ‘<samp><span class="samp">Forward</span></samp>’ and ‘<samp><span class="samp">Backward</span></samp>’
1197 or save them with ‘<samp><span class="samp">Save Game</span></samp>’. You might want to
1198 turn off this option if you are observing several blitz games at once,
1199 to keep from wasting time and network bandwidth fetching the move lists over
1201 When you turn this option on from the menu, XBoard
1202 immediately fetches the move list of the current game (if any).
1203 <br><dt>Quiet Play<dd><a name="index-Quiet-Play_002c-Menu-Item-137"></a>If this option is on, XBoard will automatically issue an ICS
1204 <kbd>set shout 0</kbd>
1205 command whenever you start a game and a
1206 <kbd>set shout 1</kbd>
1207 command whenever you finish one. Thus, you will not be distracted
1208 by shouts from other ICS users while playing.
1209 <br><dt>Seek Graph<dd><a name="index-Seek-Graph_002c-Menu-Item-138"></a>Setting this option will cause XBoard to display an graph of
1210 currently active seek ads when you left-click the board
1211 while idle and logged on to an ICS.
1212 <br><dt>Auto-Refresh Seek Graph<dd><a name="index-Auto_002dRefresh-Seek-Graph_002c-Menu-Item-139"></a>In combination with the ‘<samp><span class="samp">Seek Graph</span></samp>’ option this
1213 will cause automatic update of the seek graph while it is up.
1214 This only works on FICS and ICC,
1215 and requires a lot of bandwidth on a busy server.
1216 <br><dt>Premove<dt>Premove White<dt>Premove Black<dt>First White Move<dt>First Black Move<dd><a name="index-Premove_002c-Menu-Item-140"></a><a name="index-Premove-White_002c-Menu-Item-141"></a><a name="index-Premove-Black_002c-Menu-Item-142"></a><a name="index-First-White-Move_002c-Menu-Item-143"></a><a name="index-First-Black-Move_002c-Menu-Item-144"></a>If this option is on while playing a game on an ICS, you can register
1217 your next planned move before it is your turn. Move the piece with
1218 the mouse in the ordinary way, and the starting and ending squares
1219 will be highlighted with a special color (red by default). When it is
1220 your turn, if your registered move is legal, XBoard will send it to
1221 ICS immediately; if not, it will be ignored and you can make a
1222 different move. If you change your mind about your premove, either
1223 make a different move, or double-click on any piece to cancel the move
1226 <p>You can also enter premoves for the first white and black moves
1228 <br><dt>ICS Alarm<dt>ICS Alarm Time<dd><a name="index-ICS-Alarm_002c-Menu-Item-145"></a><a name="index-ICS-Alarm-Time_002c-Menu-Item-146"></a>When this option is on, an alarm sound is played when your clock
1229 counts down to the icsAlarmTime in an ICS game.
1230 (By default, the time is 5 seconds, but you can pecify other values
1231 with the Alarm Time spin control.)
1232 For games with time controls that include an increment, the
1233 alarm will sound each time the clock counts down to the icsAlarmTime.
1234 By default, the alarm sound is the terminal bell, but on some systems
1235 you can change it to a sound file using the soundIcsAlarm option; see
1237 <br><dt>Colorize Messages<dd><a name="index-Colorize-Messages_002c-Menu-Item-147"></a>Ticking this options causes various types of ICS messages do be
1238 displayed with different foreground or background colors in the console.
1239 The colors can be individually selected for each type,
1240 through the accompanying text edits.
1243 <h4 class="subsection">3.7.6 Match Options</h4>
1245 <p><a name="index-Match-Options_002c-Menu-Item-148"></a>Summons a dialog where you can set options important for playing automatic
1246 matches between two chess programs
1247 (e.g. by using the ‘<samp><span class="samp">Machine Match</span></samp>’ menu item in the ‘<samp><span class="samp">Mode</span></samp>’ menu).
1249 <dt>Tournament file<dd><a name="index-Tournament-file_002c-Menu-item-149"></a>To run a tournament, XBoard needs a file to record its progress,
1250 so it can resume the tourney when it is interrupted.
1251 When you want to conduct anything more complex than a simple
1252 two-player match with the currently loaded engines,
1253 (i.e. when you select a list of participants),
1254 you must not leave this field blank.
1255 When you enter the name of an existing tournament file,
1256 XBoard will ignore all other input specified in the dialog,
1257 and will take them from that tournament file.
1258 This resumes an interrupted tournament, or adds another XBoard
1259 agent playing games for it to those that are already doing so.
1260 Specifying a not-yet-existing file will cause XBoard to create it,
1261 according to the tournament parameters specified in the rest of the dialog,
1262 before it starts the tournament on ‘OK’.
1263 Provided that you specify participants;
1264 without participants no tournament file will be made, but other entered values
1265 (e.g. for the file with opening positions) will take effect.
1266 Default: configured by the <code>defaultTourneyName</code> option.
1267 <br><dt>Sync after round<dt>Sync after cycle<dd><a name="index-Sync-after-round_002c-Menu-Item-150"></a><a name="index-Sync-after-cycle_002c-Menu-Item-151"></a>The sync options, when on, will cause WinBoard to refrain from starting games
1268 of the next round or cycle before all games of the previous round or cycle are finished.
1269 This guarantees correct ordering in the games file,
1270 even when multiple XBoard instances are concurrently playing games for the same tourney.
1271 Default: sync after cycle, but not after round.
1272 <br><dt>Select Engine<dt>Tourney participants<dd><a name="index-Select-Engine_002c-Menu-Item-152"></a><a name="index-Tourney-participants_002c-Menu-Item-153"></a>With the Select Engine drop-down list you can pick an engine from your list
1273 of installed engines in the settings file, to be added to the tournament.
1274 The engines selected so far will be listed in the ‘Tourney participants’ memo.
1275 The latter is a normal text edit, so you can use normal text-editing functions
1276 to delete engines you selected by accident, or change their order.
1277 Do not type names yourself there, because names that do not exactly match
1278 one of the names from the drop-down list will lead to undefined behavior.
1279 <br><dt>Tourney type<dd><a name="index-Tourney-type_002c-Menu-Item-154"></a>Here you can specify the type of tournament you want.
1280 XBoard’s intrinsic tournament manager support round-robins (type = 0),
1281 where each participant plays every other participant, and (multi-)gauntlets,
1282 where one (or a few) so-called ‘gauntlet engines’ play an independent set of opponents.
1283 In the latter case, you specify the number of gauntlet engines.
1284 E.g. if you specified 10 engines, and tourney type = 2,
1285 the first 2 engines each play the remaining 8.
1286 A value of -1 instructs XBoard to play Swiss; for this to work an external
1287 pairing engine must be specified through the <code>pairingEngine</code> option.
1288 Each Swiss round will be considered a tourney cycle in that case.
1290 <br><dt>Number of tourney cycles<dt>Default number of Games<dd><a name="index-Number-of-tourney-cycles_002c-Menu-Item-155"></a><a name="index-Default-number-of-Games_002c-Menu-Item-156"></a>You can specify tourneys where every two opponents play each other multiple times.
1291 Such multiple games can be played in a row,
1292 as specified by the ‘number of games per pairing’,
1293 or by repeating the entire tournament schedule a number of times
1294 (specified by the ‘number of tourney cycles’).
1295 The total number of times two engine meet will be the product of these two.
1297 the number of games per pairing is the same as the default number of match games,
1298 stored in your settings file through the <code>defaultMatchGames</code> option.
1299 <br><dt>Save Tourney Games<dd><a name="index-Save-Tourney-Games_002c-Menu-Item-157"></a>File where the tournament games are saved
1300 (duplicate of the item in the ‘<samp><span class="samp">Save Game Options</span></samp>’).
1301 <br><dt>Game File with Opening Lines<dt>File with Start Positions<dt>Game Number<dt>Position Number<dt>Rewind Index after<dd><a name="index-Game-File-with-Opening-Lines_002c-Menu-Item-158"></a><a name="index-File-with-Start-Positions_002c-Menu-Item-159"></a><a name="index-Game-Number_002c-Menu-Item-160"></a><a name="index-Position-Number_002c-Menu-Item-161"></a><a name="index-Rewind-Index-after_002c-Menu-Item-162"></a>These items optionally specify the file with move sequences or board positions the tourney
1302 games should start from.
1303 The corresponding numbers specify the number of the game or position in the file.
1304 Here a value -1 means automatic stepping through all games on the file,
1305 -2 automatic stepping every two games.
1306 The Rewind-Index parameter causes a stepping index to reset to one after reaching
1308 A setting of -2 for the game number will also be effective in a tournament without
1309 specifying a game file, but playing from the GUI book instead.
1310 In this case the first (odd) games will randomly select from the book,
1311 but the second (even) games will select the same moves from the book as the previous game.
1312 (Note this leads to the same opening only if both engines use the GUI book!)
1313 Default: No game or position file will be used. The default index if such a file is used is 1.
1314 <br><dt>Disable own engine bools be default<dd><a name="index-Disable-own-engine-bools-be-default_002c-Menu-Item-163"></a>Setting this option reverses the default situation for use of the GUI opening book
1315 in tournaments from what it normally is, namely not using it.
1316 So unless the engine is installed with an option to explicitly specify it should
1317 not use the GUI book (i.e. <code>-firstHasOwnBookUCI true</code>),
1318 it will be made to use the GUI book.
1319 <br><dt>Replace Engine<dt>Upgrade Engine<dd><a name="index-Replace-Engine_002c-Menu-Item-164"></a><a name="index-Upgrade-Engine_002c-Menu-Item-165"></a>With these two buttons you can alter the participants of an already running tournament.
1320 After opening the Match Options dialog on an XBoard that is playing for the tourney,
1321 you will see all the tourney parameters in the dialog fields.
1322 You can then replace the name of one engine by that of another
1323 by editing the ‘<samp><span class="samp">participants</span></samp>’ field.
1324 (But preserve the order of the others!)
1325 Pressing the button after that will cause the substitution.
1326 With the ‘<samp><span class="samp">Upgrade Engine</span></samp>’ button the substitution will only affect future games.
1327 With ‘<samp><span class="samp">Replace Engine</span></samp>’ all games the substituted engine has already played will
1328 be invalidated, and they will be replayed with the substitute engine.
1329 In this latter case the engine must not be playing when you do this,
1330 but otherwise there is no need to pause the tournament play
1331 for making a substitution.
1332 <br><dt>Clone Tourney<dd><a name="index-CloneTourney_002c-Menu-Item-166"></a>Pressing this button after you have specified an existing tournament file
1333 will copy the contents of the latter to the dialog,
1334 and then puts the originally proposed name for the tourney file back.
1335 You can then run a tourney with the same parameters
1336 (possibly after changing the proposed name of the tourney file for the new tourney)
1340 <h4 class="subsection">3.7.7 Load Game Options</h4>
1342 <p><a name="index-Load-Game-Options_002c-Menu-Item-167"></a>Summons a dialog where you can set the <code>autoDisplayComment</code> and
1343 <code>autoDisplayTags</code> options, (which control popups when viewing loaded games),
1344 and specify the rate at which loaded games are auto-played,
1345 in seconds per move (which can be a fractional number, like 1.6).
1346 You can also set search criteria for determining which games
1347 will be displayed in the Game List for a multi-game file,
1348 and thus be eligible for loading:
1350 <dt>Elo of strongest player<dt>Elo of weakest player<dt>year<dd><a name="index-Elo-of-strongest-player_002c-Menu-Item-168"></a><a name="index-Elo-of-weakest-player_002c-Menu-Item-169"></a><a name="index-year_002c-Menu-Item-170"></a>These numeric fields set thresholds (lower limits) on the Elo rating of the mentioned player,
1351 or the date the game was played.
1353 <br><dt>Search mode<dd><a name="index-Search-mode_002c-Menu-Item-171"></a><a name="index-find-position_002c-Menu-Item-172"></a><a name="index-narrow_002c-Menu-Item-173"></a>This setting determines which positions in a game will be considered a match
1354 to the position currently displayed in the board window
1355 when you press the ‘<samp><span class="samp">find position</span></samp>’ button in the Game List.
1356 You can search for an exact match,
1357 a position that has all shown material in the same place,
1358 but might contain additional material,
1359 a position that has all Pawns in the same place,
1360 but can have the shown material anywhere,
1361 a position that can have all shown material anywhere,
1362 or a position that has material between certain limits anywhere.
1363 For the latter you have to place the material that must be present
1364 in the four lowest ranks of the board,
1365 and optional additional material in the four highest ranks of the board.
1366 You can request the optional material to be balanced.
1367 The ‘<samp><span class="samp">narrow</span></samp>’ button is similar in fuction to the ‘<samp><span class="samp">find position</span></samp>’ button,
1368 but only searches in the already selected games,
1369 rather than the complete game file,
1370 and can thus be used to refine a search based on multiple criteria.
1371 <br><dt>number of consecutive positions<dd><a name="index-number-of-consecutive-positions_002c-Menu-Item-174"></a>When you are searching by material, rather than for an exact match,
1372 this parameter indicates forhowmany consecutive game positions
1373 the same amount of material must be on the board before it is
1375 <br><dt>Also match reversed colors<dt>Also match left-right flipped position<dd><a name="index-Also-match-reversed-colors_002c-Menu-Item-175"></a><a name="index-Also-match-left_002dright-flipped-position_002c-Menu-Item-176"></a>When looking for matching positions rather than by material,
1376 these settings determine whether mirror images
1377 (in case of a vertical flip in combination with color reversal)
1378 will be also considered a match.
1379 The left-right flipping is only useful after all castling rights
1380 have expired (or in Xiangqi).
1383 <h4 class="subsection">3.7.8 Save Game Options</h4>
1385 <p><a name="index-Save-Game-Options_002c-Menu-Item-177"></a>Summons a dialog where you can specify the files on which XBoard should
1386 automatically save any played or entered games,
1387 (the <code>saveGameFile</code> option),
1388 or the final position of such games (the <code>savePositionfile</code> option).
1389 You can also select 'auto-save' without a file name,
1390 in which case XBoard will prompt the user for a file name after each game.
1391 In ICS mode you can limit the auto-saving to your own games
1392 (i.e. suppress saving of observed games).
1393 You can also set the default value for the PGN Event tag that will
1394 be used for each new game you start.
1395 Various options for the format of the game can be specified as well,
1396 such as whether scores and depths of engine games should be saved as comments,
1397 and if a tag with info about the score with which the engine came out of book
1399 For Chess, always set the format to PGN, rather than "old save stye"!
1401 <h4 class="subsection">3.7.9 Game List</h4>
1403 <p><a name="index-Game-List-Tags_002c-Menu-Item-178"></a>Pops up a dialog where you can select the PGN tags that should appear
1404 on the lines in the game list, and their order.
1406 <h4 class="subsection">3.7.10 Sound Options</h4>
1408 <p><a name="index-Sound-Options_002c-Menu-Item-179"></a>Summons a dialog where you can specify the sounds that should accompany
1409 various events that can occur XBoard.
1410 Most events are only relevant to ICS play,
1411 but the move sound is an important exception.
1412 For each event listed in the dialog,
1413 you can select a standard sound from a menu.
1414 You can also select a user-supplied sound file,
1415 by typing its name into the designated text-edit field first,
1416 and then selecting "Above WAV File" from the menu for the event.
1417 A dummy event has been provided for trying out the sounds with the
1418 "play" button next to it.
1419 The directory with standard sounds, and the external program for playing
1420 the sounds can be specified too, but normally you would not touch these
1421 once XBoard is properly installed.
1422 When a move sound other than 'None' is selected,
1423 XBoard alerts you by playing that sound
1424 after each of your opponent's moves (or after every
1425 move if you are observing a game on the Internet Chess Server).
1426 The sound is not played after moves you make or moves read from a
1429 <h4 class="subsection">3.7.11 Save Settings Now</h4>
1431 <p><a name="index-Save-Settings-Now_002c-Menu-Item-180"></a>Selecting this menu item causes the current XBoard settings to be
1432 written to the settings file, so they will also apply in future sessions.
1433 Note that some settings are 'volatile', and are not saved,
1434 because XBoard considers it too unlikely that you want those to apply
1436 In particular this applies to the Chess program names, and all options
1437 giving information on those Chess programs (such as their directory,
1438 if they have their own opening book, if they are UCI or native XBoard),
1439 or the variant you are playing.
1440 Such options would still be understood when they appear in the settings
1441 file in case they were put there with the aid of a text editor, but they
1442 would disappear from the file as soon as you save the settings.
1444 <p>Note that XBoard no longer pays attention to options values specified
1445 in the .Xresources file.
1446 (Specifying key bindings there will still work, though.)
1447 To alter the default of volatile options, you can use the following method:
1448 Rename your ~/.xboardrc settings file (to ~/.yboardrc, say), and create
1449 a new file ~/.xboardrc, which only contains the options
1451 <pre class="example"> -settingsFile ~/.yboardrc
1452 -saveSettingsFile ~/.yboardrc
1454 <p class="noindent">This will cause your settings to be saved on ~/.yboardrc in the future,
1455 so that ~/.xboardrc is no longer overwritten.
1456 You can then safely specify volatile options in ~/.xboardrc, either
1457 before or after the settingsFile options.
1458 Note that when you specify persistent options after the settingsFile options
1459 in ~/.xboardrc, you will essentially turn them into volatile options
1460 with the specified value as default, because that value will overrule
1461 the value loaded from the settings file (being read later).
1463 <h4 class="subsection">3.7.12 Save Settings on Exit</h4>
1465 <p><a name="index-Save-Settings-on-Exit_002c-Menu-Item-181"></a>Setting this option has no immediate effect, but causes the settings
1466 to be saved when you quit XBoard. What happens then is otherwise
1467 identical to what happens when you use select "Save Settings Now",
1471 <a name="Help-Menu"></a>
1473 Next: <a rel="next" accesskey="n" href="#Keys">Keys</a>,
1474 Previous: <a rel="previous" accesskey="p" href="#Options-Menu">Options Menu</a>,
1475 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
1479 <h3 class="section">3.8 Help Menu</h3>
1481 <p><a name="index-Menu_002c-Help-182"></a><a name="index-Help-Menu-183"></a>
1483 <dt>Info XBoard<dd><a name="index-Info-XBoard_002c-Menu-Item-184"></a>Displays the XBoard documentation in info format. For this feature to
1484 work, you must have the GNU info program installed on your system, and
1485 the file <samp><span class="file">xboard.info</span></samp> must either be present in the current
1486 working directory, or have been installed by the ‘<samp><span class="samp">make install</span></samp>’
1487 command when you built XBoard.
1488 <br><dt>Man XBoard<dd><a name="index-Man-XBoard_002c-Menu-Item-185"></a>Displays the XBoard documentation in man page format.
1489 The <kbd>F1</kbd> key is a keyboard equivalent. For this
1490 feature to work, the file <samp><span class="file">xboard.6</span></samp> must have been installed by
1491 the ‘<samp><span class="samp">make install</span></samp>’ command when you built XBoard, and the
1492 directory it was placed in must be on the search path for your
1493 system's ‘<samp><span class="samp">man</span></samp>’ command.
1494 <br><dt>About XBoard<dd><a name="index-About-XBoard_002c-Menu-Item-186"></a>Shows the current XBoard version number.
1500 Previous: <a rel="previous" accesskey="p" href="#Help-Menu">Help Menu</a>,
1501 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
1505 <h3 class="section">3.9 Other Shortcut Keys</h3>
1507 <p><a name="index-Keys-187"></a><a name="index-Shortcut-keys-188"></a>
1509 <dt>Show Last Move<dd><a name="index-Show-Last-Move_002c-Shortcut-Key-189"></a>By hitting <kbd>Enter</kbd> the last move will be re-animated.
1510 <br><dt>Load Next Game<dd><a name="index-Load-Next-Game_002c-Menu-Item-190"></a>Loads the next game from the last game record file you loaded.
1511 The <kbd>Alt+PgDn</kbd> key triggers this action.
1512 <br><dt>Load Previous Game<dd><a name="index-Load-Previous-Game_002c-Menu-Item-191"></a>Loads the previous game from the last game record file you
1513 loaded. The <kbd>Alt+PgUp</kbd> key triggers this action.
1514 Not available if the last game was loaded from a pipe.
1515 <br><dt>Reload Same Game<dd><a name="index-Reload-Same-Game_002c-Menu-Item-192"></a>Reloads the last game you loaded.
1516 Not available if the last game was loaded from a pipe.
1517 Currently no keystroke is assigned to this ReloadGameProc.
1518 <br><dt>Reload Same Position<dd><a name="index-Reload-Same-Position_002c-Menu-Item-193"></a>Reloads the last position you loaded.
1519 Not available if the last position was loaded from a pipe.
1520 Currently no keystroke is assigned to this ReloadPositionProc.
1523 <p>In the Xaw build of XBoard you can add or remove shortcut keys
1524 using the X resources <code>paneA.translations</code>.
1525 Here is an example of what could go into your
1526 <samp><span class="file">.Xdefaults</span></samp> file:
1528 <pre class="example"> XBoard*paneA.translations: \
1529 Shift<Key>?: MenuItem(Help.About) \n\
1530 Ctrl<Key>y: MenuItem(Action.Accept) \n\
1531 Ctrl<Key>n: MenuItem(Action.Decline) \n\
1532 Ctrl<Key>i: MenuItem(Nothing)
1534 <p class="noindent">So the key should always be bound to the action 'MenuItem',
1535 with the (hierarchical) name of the menu item as argument.
1536 There are a few actions available for which no menu item exists:
1537 Binding a key to <code>Nothing</code> makes it do nothing, thus removing
1538 it as a shortcut key. Other such functions that can be bound to keys
1541 <pre class="example"> AboutGame, DebugProc (switches the -debug option on or off),
1542 LoadNextGame, LoadPrevGame, ReloadGame, ReloadPosition.
1545 <a name="Options"></a>
1547 Next: <a rel="next" accesskey="n" href="#Chess-Servers">Chess Servers</a>,
1548 Previous: <a rel="previous" accesskey="p" href="#Menus">Menus</a>,
1549 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
1553 <h2 class="chapter">4 Options</h2>
1555 <p><a name="index-Options-194"></a><a name="index-Options-195"></a>
1556 This section documents the command-line options to XBoard. You can
1557 set these options in two ways: by typing them on the shell command
1558 line you use to start XBoard, or by editing the settings file
1559 (usually ~/.xboardrc) to alter the value of the setting that was
1560 saved there. Some of the options
1561 cannot be changed while XBoard is running; others set the initial
1562 state of items that can be changed with the <a href="#Options">Options</a> menu.
1564 <p>Most of the options have both a long name and a short name. To turn a
1565 boolean option on or off from the command line, either give its long
1566 name followed by the value true or false
1567 (‘<samp><span class="samp">-longOptionName true</span></samp>’), or give just the short name to turn the
1568 option on (‘<samp><span class="samp">-opt</span></samp>’), or the short name preceded by ‘<samp><span class="samp">x</span></samp>’ to
1569 turn the option off (‘<samp><span class="samp">-xopt</span></samp>’). For options that take strings or
1570 numbers as values, you can use the long or short option names
1574 <li><a accesskey="1" href="#Chess-engine-options">Chess engine options</a>: Controlling the chess engine.
1575 <li><a accesskey="2" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>: Setting some very common engine parameters
1576 <li><a accesskey="3" href="#Tournament-options">Tournament options</a>: Running tournaments and matches between engines.
1577 <li><a accesskey="4" href="#ICS-options">ICS options</a>: Connecting to and using ICS.
1578 <li><a accesskey="5" href="#Load-and-Save-options">Load and Save options</a>: Input/output options.
1579 <li><a accesskey="6" href="#User-interface-options">User interface options</a>: Look and feel options.
1580 <li><a accesskey="7" href="#Adjudication-Options">Adjudication Options</a>: Control adjudication of engine-engine games.
1581 <li><a accesskey="8" href="#Other-options">Other options</a>: Miscellaneous.
1585 <a name="Chess-engine-options"></a>
1587 Next: <a rel="next" accesskey="n" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>,
1588 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1592 <h3 class="section">4.1 Chess Engine Options</h3>
1594 <p><a name="index-options_002c-Chess-engine-196"></a><a name="index-Chess-engine-options-197"></a>
1596 <dt>-tc or -timeControl minutes[:seconds]<dd><a name="index-tc_002c-option-198"></a><a name="index-timeControl_002c-option-199"></a>Each player begins with his clock set to the <code>timeControl</code> period.
1598 The additional options <code>movesPerSession</code> and <code>timeIncrement</code>
1599 are mutually exclusive.
1600 <br><dt>-mps or -movesPerSession moves<dd><a name="index-mps_002c-option-200"></a><a name="index-movesPerSession_002c-option-201"></a>When both players have made <code>movesPerSession</code> moves, a
1601 new <code>timeControl</code> period is added to both clocks. Default: 40 moves.
1602 <br><dt>-inc or -timeIncrement seconds<dd><a name="index-inc_002c-option-202"></a><a name="index-timeIncrement_002c-option-203"></a>If this option is specified, <code>movesPerSession</code> is ignored.
1603 Instead, after each player's move, <code>timeIncrement</code> seconds are
1605 Use ‘<samp><span class="samp">-inc 0</span></samp>’ if you want to require the entire
1606 game to be played in one <code>timeControl</code> period, with no increment.
1607 Default: -1, which specifies <code>movesPerSession</code> mode.
1608 <br><dt>-clock/-xclock or -clockMode true/false<dd><a name="index-clock_002c-option-204"></a><a name="index-clockMode_002c-option-205"></a>Determines whether or not to display the chess clocks. If clockMode is
1609 false, the clocks are not shown, but the side that is to play next
1610 is still highlighted. Also, unless <code>searchTime</code>
1611 is set, the chess engine still keeps track of the clock time and uses it to
1612 determine how fast to make its moves.
1613 <br><dt>-st or -searchTime minutes[:seconds]<dd><a name="index-st_002c-option-206"></a><a name="index-searchTime_002c-option-207"></a>Tells the chess engine to spend at most the given amount of time
1614 searching for each of its moves. Without this option, the chess engine
1615 chooses its search time based on the number of moves and amount
1616 of time remaining until the next time control.
1617 Setting this option also sets clockMode to false.
1618 <br><dt>-depth or -searchDepth number<dd><a name="index-sd_002c-option-208"></a><a name="index-searchDepth_002c-option-209"></a>Tells the chess engine to look ahead at most the given number of moves
1619 when searching for a move to make. Without this option, the chess
1620 engine chooses its search depth based on the number of moves and
1621 amount of time remaining until the next time control. With the option,
1622 the engine will cut off its search early if it reaches the specified depth.
1623 <br><dt>-firstNPS number<dt>-secondNPS number<dd><a name="index-firstNPS_002c-option-210"></a><a name="index-secondNPS_002c-option-211"></a>Tells the chess engine to use an internal time standard based on its node count,
1624 rather then wall-clock time, to make its timing decisions.
1625 The time in virtual seconds should be obtained by dividing the node count
1626 through the given number, like the number was a rate in nodes per second.
1627 Xboard will manage the clocks in accordance with this, relying on the number
1628 of nodes reported by the engine in its thinking output. If the given number equals zero,
1629 it can obviously not be used to convert nodes to seconds, and the time reported
1630 by the engine is used to decrement the XBoard clock in stead. The engine is supposed to
1631 report in CPU time it uses, rather than wall-clock time, in this mode. This option
1632 can provide fairer conditions for engine-engine matches on heavily loaded machines,
1633 or with very fast games (where the wall clock is too inaccurate).
1634 <code>showThinking</code> must be on for this option to work. Default: -1 (off).
1635 Not many engines might support this yet!
1636 <br><dt>-firstTimeOdds factor<dt>-secondTimeOdds factor<dd><a name="index-firstTimeOdds_002c-option-212"></a><a name="index-secondTimeOdds_002c-option-213"></a>Reduces the time given to the mentioned engine by the given factor.
1637 If pondering is off, the effect is indistinguishable from what would happen
1638 if the engine was running on an n-times slower machine. Default: 1.
1639 <br><dt>-timeOddsMode mode<dd><a name="index-timeOddsMode_002c-option-214"></a>This option determines how the case is handled where both engines have a time-odds handicap.
1640 If mode=1, the engine that gets the most time will always get the nominal time,
1641 as specified by the time-control options, and its opponent's time is renormalized accordingly.
1642 If mode=0, both play with reduced time. Default: 0.
1643 <br><dt>-hideThinkingFromHuman true/false<dd>Controls the Hide Thinking option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1644 (Replaces the Show-Thinking option of older xboard versions.)
1645 <br><dt>-thinking/-xthinking or -showThinking true/false<dd><a name="index-thinking_002c-option-215"></a><a name="index-showThinking_002c-option-216"></a>Forces the engine to send thinking output to xboard.
1646 Used to be the only way to control if thinking output was displayed
1647 in older xboard versions,
1648 but as the thinking output in xboard 4.3 is also used for several other
1649 purposes (adjudication, storing in PGN file) the display of it is now controlled
1650 by the new option Hide Thinking. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1651 (But if xboard needs the thinking output for some purpose,
1652 it makes the engine send it despite the setting of this option.)
1653 <br><dt>-ponder/-xponder or -ponderNextMove true/false<dd><a name="index-ponder_002c-option-217"></a><a name="index-ponderNextMove_002c-option-218"></a>Sets the Ponder Next Move menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1654 <br><dt>-smpCores number<dd>Specifies the maximum number of CPUs an SMP engine is allowed to use.
1655 Only works for engines that support the XBoard/WinBoard-protocol cores feature.
1656 <br><dt>-mg or -matchGames n<dd><a name="index-mg_002c-option-219"></a><a name="index-matchGames_002c-option-220"></a>Automatically runs an n-game match between two chess engines,
1657 with alternating colors.
1658 If the <code>loadGameFile</code> or <code>loadPositionFile</code> option is set,
1660 starts each game with the given opening moves or the given position;
1661 otherwise, the games start with the standard initial chess position.
1662 If the <code>saveGameFile</code> option is set, a move record for the
1663 match is appended to the specified file. If the <code>savePositionFile</code>
1664 option is set, the final position reached in each game of the match is appended
1665 to the specified file. When the match is over, XBoard
1666 displays the match score and exits. Default: 0 (do not run a match).
1667 <br><dt>-mm/-xmm or -matchMode true/false<dd><a name="index-mm_002c-option-221"></a><a name="index-matchMode_002c-option-222"></a>Setting <code>matchMode</code> to true is equivalent to setting
1668 <code>matchGames</code> to 1.
1669 <br><dt>-sameColorGames n<dd><a name="index-sameColorGames_002c-option-223"></a>Automatically runs an n-game match between two chess engines,
1670 without alternating colors.
1671 Otherwise the same applies as for the ‘<samp><span class="samp">-matchGames</span></samp>’ option,
1672 over which it takes precedence if both are specified. (See there.)
1673 Default: 0 (do not run a match).
1674 <br><dt>-fcp or -firstChessProgram program<dd><a name="index-fcp_002c-option-224"></a><a name="index-firstChessProgram_002c-option-225"></a>Name of first chess engine.
1675 Default: <samp><span class="file">Fairy-Max</span></samp>.
1676 <br><dt>-scp or -secondChessProgram program<dd><a name="index-scp_002c-option-226"></a><a name="index-secondChessProgram_002c-option-227"></a>Name of second chess engine, if needed.
1677 A second chess engine is started only in Two Machines (match) mode.
1678 Default: <samp><span class="file">Fairy-Max</span></samp>.
1679 <br><dt>-fe or -firstEngine nickname<dd><a name="index-fe_002c-option-228"></a><a name="index-firstEngine_002c-option-229"></a>This is an alternative to the <code>fcp</code> option for specifying the first engine,
1680 for engines that were already configured (using the ‘<samp><span class="samp">Load Engine</span></samp>’ dialog)
1681 in XBoard's settings file.
1682 It will not only retrieve the real name of the engine,
1683 but also all options configured with it.
1684 (E.g. if it is UCI, whether it should use book.)
1685 <br><dt>-se or -secondEngine nickname<dd><a name="index-se_002c-option-230"></a><a name="index-secondEngine_002c-option-231"></a>As <code>fe</code>, but for the second engine.
1686 <br><dt>-fb/-xfb or -firstPlaysBlack true/false<dd><a name="index-fb_002c-option-232"></a><a name="index-firstPlaysBlack_002c-option-233"></a>In games between two chess engines, firstChessProgram normally plays
1687 white. If this option is true, firstChessProgram plays black. In a
1688 multi-game match, this option affects the colors only for the first
1689 game; they still alternate in subsequent games.
1690 <br><dt>-fh or -firstHost host<dt>-sh or -secondHost host<dd><a name="index-fh_002c-option-234"></a><a name="index-firstHost_002c-option-235"></a><a name="index-sh_002c-option-236"></a><a name="index-secondHost_002c-option-237"></a>Hosts on which the chess engines are to run. The default for
1691 each is <samp><span class="file">localhost</span></samp>. If you specify another host, XBoard
1692 uses <samp><span class="file">rsh</span></samp> to run the chess engine there. (You can substitute a
1693 different remote shell program for rsh using the <code>remoteShell</code>
1694 option described below.)
1695 <br><dt>-fd or -firstDirectory dir<dt>-sd or -secondDirectory dir<dd><a name="index-fd_002c-option-238"></a><a name="index-firstDirectory_002c-option-239"></a><a name="index-sd_002c-option-240"></a><a name="index-secondDirectory_002c-option-241"></a>Working directories in which the chess engines are to be run.
1696 The default is "", which means to run the chess engine
1697 in the same working directory as XBoard
1698 itself. (See the CHESSDIR environment variable.)
1699 This option is effective only when the chess engine is being run
1700 on the local host; it does not work if the engine is run remotely
1701 using the -fh or -sh option.
1702 <br><dt>-initString string or -firstInitString<dt>-secondInitString string<dd><a name="index-initString_002c-option-242"></a><a name="index-firstInitString_002c-option-243"></a><a name="index-secondInitString_002c-option-244"></a>The string that is sent to initialize each chess engine for a new game.
1705 <pre class="example"> new
1708 <p class="noindent">Setting this option from the command line is tricky, because you must
1709 type in real newline characters, including one at the very end.
1710 In most shells you can do this by
1711 entering a ‘<samp><span class="samp">\</span></samp>’ character followed by a newline.
1712 Using the character sequence ‘<samp><span class="samp">\n</span></samp>’ in the string should work too, though.
1714 <p>If you change this option, don't remove the ‘<samp><span class="samp">new</span></samp>’
1715 command; it is required by all chess engines to
1718 <p>You can remove the ‘<samp><span class="samp">random</span></samp>’ command if you like; including it
1719 causes GNU Chess 4 to randomize its move selection slightly so that it
1720 doesn't play the same moves in every game. Even without
1721 ‘<samp><span class="samp">random</span></samp>’, GNU Chess 4 randomizes its choice of moves from its
1722 opening book. Many other chess engines ignore this command entirely
1723 and always (or never) randomize.
1725 <p>You can also try adding other commands to the initString; see the
1726 documentation of the chess engine you are using for details.
1727 <br><dt>-firstComputerString string<dt>-secondComputerString string<dd><a name="index-firstComputerString_002c-option-245"></a><a name="index-secondComputerString_002c-option-246"></a>The string that is sent to the chess engine if its opponent is another
1728 computer chess engine. The default is ‘<samp><span class="samp">computer\n</span></samp>’. Probably the
1729 only useful alternative is the empty string (‘<samp></samp>’), which keeps the
1730 engine from knowing that it is playing another computer.
1731 <br><dt>-reuse/-xreuse or -reuseFirst true/false<dt>-reuse2/-xreuse2 or -reuseSecond true/false<dd><a name="index-reuse_002c-option-247"></a><a name="index-reuseFirst_002c-option-248"></a><a name="index-reuse2_002c-option-249"></a><a name="index-reuseSecond_002c-option-250"></a>If the option is false,
1732 XBoard kills off the chess engine after every game and starts
1733 it again for the next game.
1734 If the option is true (the default),
1735 XBoard starts the chess engine only once
1736 and uses it repeatedly to play multiple games.
1737 Some old chess engines may not work properly when
1738 reuse is turned on, but otherwise games will start faster if it is left on.
1739 <br><dt>-firstProtocolVersion version-number<dt>-secondProtocolVersion version-number<dd><a name="index-firstProtocolVersion_002c-option-251"></a><a name="index-secondProtocolVersion_002c-option-252"></a>This option specifies which version of the chess engine communication
1740 protocol to use. By default, version-number is 2. In version 1, the
1741 "protover" command is not sent to the engine; since version 1 is a
1742 subset of version 2, nothing else changes. Other values for
1743 version-number are not supported.
1744 <br><dt>-firstScoreAbs true/false<dt>-secondScoreAbs true/false<dd><a name="index-firstScoreAbs_002c-option-253"></a><a name="index-secondScoreAbs_002c-option-254"></a>If this option is set, the score reported by the engine is taken to be
1745 that in favor of white, even when the engine plays black.
1746 Important when XBoard uses the score for adjudications, or in PGN reporting.
1747 <br><dt>-niceEngines priority<dd><a name="index-niceEngines_002c-option-255"></a>This option allows you to lower the priority of the engine processes,
1748 so that the generally insatiable hunger for CPU time of chess engines does not interfere so much
1749 with smooth operation of XBoard (or the rest of your system).
1750 Negative values could increase the engine priority, which is not recommended.
1751 <br><dt>-firstOptions string<dt>-secondOptions string<dd><a name="index-firstOptions_002c-option-256"></a><a name="index-secondOptions_002c-option-257"></a>The given string is a comma-separated list of (option name=option value) pairs,
1752 like the following example: "style=Karpov,blunder rate=0".
1753 If an option announced by the engine at startup through the feature commands of the XBoard/WinBoard protocol
1754 matches one of the option names (i.e. "style" or "blunder rate"),
1755 it would be set to the given value (i.e. "Karpov" or 0)
1756 through a corresponding option command to the engine.
1757 This provided that the type of the value (text or numeric) matches as well.
1758 <br><dt>-firstNeedsNoncompliantFEN string<dt>-secondNeedsNoncompliantFEN string<dd><a name="index-firstNeedsNoncompliantFEN_002c-option-258"></a><a name="index-secondNeedsNoncompliantFEN_002c-option-259"></a>The castling rights and e.p. fields of the FEN sent to the mentioned engine
1759 with the setboard command will be replaced by the given string. This can for
1760 instance be used to run engines that do not understand Chess960 FENs in
1761 variant fischerandom, to make them at least understand the opening position,
1762 through setting the string to "KQkq -". (Note you also have to give the e.p. field!)
1763 Other possible applications are to provide work-arounds for engines that want to see
1764 castling and e.p. fields in variants that do not have castling or e.p.
1765 (shatranj, courier, xiangqi, shogi) so that XBoard would normally omit them
1766 (string = "- -"), or to add variant-specific fields that are not yet supported by XBoard
1767 (e.g. to indicate the number of checks in 3check).
1768 <br><dt>-shuffleOpenings<dd><a name="index-shuffleOpenings_002c-option-260"></a>Forces shuffling of the opening setup in variants that normally have a fixed initial position.
1769 Shufflings are symmetric for black and white, and exempt King and Rooks in variants
1770 with normal castling.
1771 Remains in force until a new variant is selected.
1775 <a name="UCI-+-WB-Engine-Settings"></a>
1776 <a name="UCI-_002b-WB-Engine-Settings"></a>
1778 Next: <a rel="next" accesskey="n" href="#Tournament-options">Tournament options</a>,
1779 Previous: <a rel="previous" accesskey="p" href="#Chess-engine-options">Chess engine options</a>,
1780 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1784 <h3 class="section">4.2 UCI + WB Engine Settings</h3>
1786 <p><a name="index-Engine-Settings-261"></a><a name="index-Settings_002c-Engine-262"></a>
1788 <dt>-fUCI or -firstIsUCI true/false<dt>-sUCI or -secondIsUCI true/false<dd><a name="index-fUCI_002c-option-263"></a><a name="index-sUCI_002c-option-264"></a><a name="index-firstIsUCI_002c-option-265"></a><a name="index-secondIsUCI_002c-option-266"></a>Indicates if the mentioned engine executable file is an UCI engine,
1789 and should be run with the aid of the Polyglot adapter rather than directly.
1790 Xboard will then pass the other UCI options and engine name to Polyglot
1791 on its command line, according to the option <code>adapterCommand</code>.
1792 <br><dt>-fUCCI<dt>-sUCCI<dt>-fUSI<dt>-sUSI<dd><a name="index-fUCCI_002c-option-267"></a><a name="index-sUCCI_002c-option-268"></a><a name="index-fUSI_002c-option-269"></a><a name="index-sUSI_002c-option-270"></a>Options similar to <code>fUCI</code> and <code>sUCI</code>, except that they
1793 use the indicated engine with the protocol adapter specified in
1794 the ‘<samp><span class="samp">uxiAdapter</span></samp>’ option.
1795 This can then be configured for running an UCCI or USI adapter,
1797 <br><dt>-adapterCommand string<dd><a name="index-adapterCommand_002c-option-271"></a>The string conatins the command that should be issued by XBoard
1798 to start an engine that is accompanied by the <code>fUCI</code> option.
1799 Any identifier following a percent sign in the command (e.g. %fcp)
1800 will be considered the name of an XBoard option, and be replaced
1801 by the value of that option at the time the engine is started.
1802 For starting the second engine, any leading "f" or "first" in
1803 the option name will first be replaced by "s" or "second",
1804 before finding its value.
1805 Default: 'polyglot -noini -ec "%fcp" -ed "%fd"'
1806 <br><dt>-uxiAdapter string<dd><a name="index-uxiAdapter_002c-option-272"></a>Similar to <code>adapterCommand</code>, but used for engines accompanied
1807 by the <code>fUCCI</code> or <code>fUSI</code> option, so you can configure
1808 XBoard to be ready to handle more than one flavor of non-native protocols.
1810 <br><dt>-polyglotDir filename<dd><a name="index-polyglotDir_002c-option-273"></a>Gives the name of the directory in which the Polyglot adapter for UCI engines resides.
1812 <br><dt>-usePolyglotBook true/false<dd><a name="index-usePolyglotBook_002c-option-274"></a>Specifies if the Polyglot book should be used as GUI book.
1813 <br><dt>-polyglotBook filename<dd><a name="index-polyglotBook_002c-option-275"></a>Gives the filename of the opening book.
1814 The book is only used when the <code>usePolyglotBook</code> option is set to true,
1815 and the option <code>firstHasOwnBookUCI</code> or <code>secondHasOwnBookUCI</code>
1816 applying to the engine is set to false.
1817 The engine will be kept in force mode as long as the current position is in book,
1818 and XBoard will select the book moves for it. Default: "".
1819 <br><dt>-fNoOwnBookUCI or -firstXBook or -firstHasOwnBookUCI true/false<dt>-sNoOwnBookUCI or -secondXBook or -secondHasOwnBookUCI true/false<dd><a name="index-fNoOwnBookUCI_002c-option-276"></a><a name="index-sNoOwnBookUCI_002c-option-277"></a><a name="index-firstHasOwnBookUCI_002c-option-278"></a><a name="index-secondHasOwnBookUCI_002c-option-279"></a><a name="index-firstXBook_002c-option-280"></a><a name="index-secondXBook_002c-option-281"></a>Indicates if the mentioned engine has its own opening book it should play from,
1820 rather than using the external book through XBoard.
1821 Default: depends on setting of the option <code>discourageOwnBooks</code>.
1822 <br><dt>-discourageOwnBooks true/false<dd><a name="index-discourageOwnBooks_002c-option-282"></a>When set, newly loaded engines will be assumed to use the GUI book,
1823 unless they explicitly specify differently.
1824 Otherwise they will be assumed to not use the GUI book,
1825 unless the specify differently (e.g. with <code>firstXBook</code>).
1827 <br><dt>-bookDepth n<dd><a name="index-bookDepth_002c-option-283"></a>Limits the use of the GUI book to the first n moves of each side.
1829 <br><dt>-bookVariation n<dd><a name="index-bookVariation_002c-option-284"></a>A value n from 0 to 100 tunes the choice of moves from the GUI books
1830 from totally random to best-only. Default: 50
1831 <br><dt>-mcBookMode<dd><a name="index-mcBookMode_002c-option-285"></a>When this volatile option is specified, the probing algorithm of the
1832 GUI book is altered to always select the move that is most under-represented
1833 based on its performance.
1834 When all moves are played in approximately the right proportion,
1835 a book miss will be reported, to give the engine opportunity to
1837 In addition score of the moves will be kept track of during the session
1839 By playing an match in this mode, a book will be built from scratch.
1840 The only output are the saved games, which can be converted to an
1841 actual book later, with the ‘<samp><span class="samp">Save Games as Book</span></samp>’ command.
1842 This command can also be used to pre-fill the book buffer
1843 before adding new games based on the probing algorithm.
1844 <br><dt>-fn string or -firstPgnName string<dt>-sn string or -secondPgnName string<dd><a name="index-firstPgnName_002c-option-286"></a><a name="index-secondPgnName_002c-option-287"></a><a name="index-fn_002c-option-288"></a><a name="index-sn_002c-option-289"></a>Indicates the name that should be used for the engine in PGN tags of
1845 engine-engine games.
1846 Intended to allow you to install verions of the same engine with different settings,
1847 and still distinguish them.
1849 <br><dt>-defaultHashSize n<dd><a name="index-defaultHashSize_002c-option-290"></a>Sets the size of the hash table to n MegaBytes. Together with the EGTB cache size
1850 this number is also used to calculate the memory setting of XBoard/WinBoard engines,
1851 for those that support the memory feature of the XBoard/WinBoard protocol. Default: 64.
1852 <br><dt>-defaultCacheSizeEGTB n<dd><a name="index-defaultCacheSizeEGTB_002c-option-291"></a>Sets the size of the EGTB cache to n MegaBytes. Together with the hash-table size
1853 this number is also used to calculate the memory setting of XBoard/WinBoard engines,
1854 for those that support the memory feature of the XBoard/WinBoard protocol. Default: 4.
1855 <br><dt>-defaultPathEGTB filename<dd><a name="index-defaultPathEGTB_002c-option-292"></a>Gives the name of the directory where the end-game tablebases are installed, for UCI engines.
1856 Default: "/usr/local/share/egtb".
1857 <br><dt>-egtFormats string<dd><a name="index-egtFormats_002c-option-293"></a>Specifies which end-game tables are installed on the computer, and where.
1858 The argument is a comma-separated list of format specifications,
1859 each specification consisting of a format name, a colon, and a directory path name,
1860 e.g. "nalimov:/usr/local/share/egtb".
1861 If the name part matches that of a format that the engine requests through a feature command,
1862 xboard will relay the path name for this format to the engine through an egtpath command.
1863 One egtpath command for each matching format will be sent.
1864 Popular formats are "nalimov" DTM tablebases and "scorpio" bitbases.
1866 <br><dt>-firstChessProgramNames={names}<dd>This option lets you customize the drop-down list of chess engine names
1867 that appears in the ‘<samp><span class="samp">Load Engine</span></samp>’ and ‘<samp><span class="samp">Match Options</span></samp>’ dialog.
1868 It consists of a list of strings, one per line.
1869 When an engine is loaded, the corresponding line is prefixed with "-fcp ",
1870 and processed like it appeared on the command line.
1871 That means that apart from the engine command,
1872 it can contain any list of XBoard options you want to use with this engine.
1873 (Commonly used options here are -fd, -firstXBook, -fUCI, -variant.)
1875 <p>The value of this option is gradually built as you load new engines
1876 through the ‘<samp><span class="samp">Load Engine</span></samp>’ menu dialog, with ‘<samp><span class="samp">Add to list</span></samp>’ ticked.
1877 To change it, edit your settings file with a plain text editor.
1881 <a name="Tournament-options"></a>
1883 Next: <a rel="next" accesskey="n" href="#ICS-options">ICS options</a>,
1884 Previous: <a rel="previous" accesskey="p" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>,
1885 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1889 <h3 class="section">4.3 Tournament options</h3>
1891 <p><a name="index-Tournament-Options-294"></a><a name="index-Options_002c-Tournament-295"></a>
1893 <dt>-defaultMatchGames n<dd><a name="index-defaultMatchGames_002c-option-296"></a>Sets the number of games that will be used for a match between two engines
1894 started from the menu to n. Also used as games per pairing in other tournament
1895 formats. Default: 10.
1896 <br><dt>-matchPause n<dd><a name="index-matchPause_002c-option-297"></a>Specifies the duration of the pause between two games of a match or tournament
1897 between engines as n milliseconds.
1898 Especially engines that do not support ping need this option,
1899 to prevent that the move they are thinking on when an opponent unexpectedly
1900 resigns will be counted for the next game, (leading to illegal moves there).
1902 <br><dt>-tf filename or -tourneyFile filename<dd><a name="index-tf_002c-option-298"></a><a name="index-tourneyFile_002c-option-299"></a>Specifies the name of the tournament file used in match mode
1903 to conduct a multi-player tournament.
1904 This file is a special settings file,
1905 which stores the description of the tournament (including progress info),
1906 through normal options (e.g. for time control, load and save files),
1907 and through some special-purpose options listed below.
1908 <br><dt>-tt number or -tourneyType number<dd><a name="index-tt_002c-option-300"></a><a name="index-tourneyType_002c-option-301"></a>Specifies the type of tourney: 0 = round-robin,
1909 N>0 = (multi-)gauntlet with N gauntlet engines,
1910 -1 = Swiss through external pairing engine.
1911 Volatile option, but stored in tourney file.
1912 <br><dt>-cy number or -tourneyCycles number<dd><a name="index-cy_002c-option-302"></a><a name="index-tourneyCycles_002c-option-303"></a>Specifies the number of cycles in a tourney.
1913 Volatile option, but stored in tourney file.
1914 <br><dt>-participants list<dd><a name="index-participants_002c-option-304"></a>The list is a multi-line text string that specifies engines
1915 occurring in the <code>firstChesProgramNames</code> list
1916 in the settings file by their (implied or explicitly given) nicknames,
1917 one engine per line.
1918 The mentioned engines will play in the tourney.
1919 Volatile option, but stored in tourney file.
1920 <br><dt>-results string<dd><a name="index-results_002c-option-305"></a>The string of +=- characters lists the result of all played games in a toruney.
1921 Games currently playing are listed as *,
1922 while a space indicates a game that is not yet played or playing .
1923 Volatile option, but stored in tourney file.
1924 <br><dt>-defaultTourneyName string<dd><a name="index-defaultTourneyName_002c-option-306"></a>Specifies the name of the tournament file XBoard should propose
1925 when the ‘<samp><span class="samp">Match Options</span></samp>’ dialog is opened.
1926 Any %y, %M, %d, %h, %m, %s in the string are replaced by the current
1927 year, month, day of the month, hours, minutes, seconds of the current time,
1928 respectively, as two-digit number.
1929 A %Y would be replaced by the year as 4-digit number. Default: empty string.
1930 <br><dt>-pairingEngine filename<dd><a name="index-pairingEngine_002c-option-307"></a>Specifies the external program to be used to pair the participants in Swiss tourneys.
1931 XBoard communicates with this engine in the same way as it communicates with Chess engines.
1932 The only commands sent to the pairing engine are “results N string”,
1933 (where N is the number of participants,
1934 and string the results so far in the format of the results option),
1935 and “pairing N”, (where N is the number of the tourney game).
1936 To the latter the pairing engine should answer with “A-B”,
1937 where A and B are participant numbers (in the range 1-N).
1938 (There should be no reply to the results command.) Default: empty string.
1939 <br><dt>-afterGame string<dt>-afterTourney string<dd><a name="index-afterGame_002c-option-308"></a><a name="index-afterTourney_002c-option-309"></a>When non-empty, the given string will be executed as a system command
1940 after each tournament game, orafterthe tourney completes, respectively.
1941 This can be used, for example, to autmatically run a cross-table generator
1942 on the PGN file where games are saved, to update the tourney standings.
1944 <br><dt>-syncAfterRound true/false<dt>-syncAfterCycle true/false<dd><a name="index-syncAfterRound_002c-option-310"></a><a name="index-syncAfterCycle_002c-option-311"></a>Controls whether different instances of XBoard concurrently running the
1945 same tournament will wait for each other.
1946 Defaults: sync after cycle, but not after round.
1947 <br><dt>-seedBase number<dd><a name="index-seedBase_002c-option-312"></a>Used to store the seed of the pseudo-random-number generator in the
1948 tourneyFile, so that separate instances of XBoard working on the same
1949 tourney can take coherent 'random' decisions, such as picking an
1950 opening for a given game number.
1954 <a name="ICS-options"></a>
1956 Next: <a rel="next" accesskey="n" href="#Load-and-Save-options">Load and Save options</a>,
1957 Previous: <a rel="previous" accesskey="p" href="#Tournament-options">Tournament options</a>,
1958 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1962 <h3 class="section">4.4 ICS options</h3>
1964 <p><a name="index-ICS-options-313"></a><a name="index-Options_002c-ICS-314"></a>
1966 <dt>-ics/-xics or -internetChessServerMode true/false<dd><a name="index-ics_002c-option-315"></a><a name="index-internetChessServerMode_002c-option-316"></a>Connect with an Internet Chess Server to play chess against its
1967 other users, observe games they are playing, or review games
1968 that have recently finished. Default: false.
1969 <br><dt>-icshost or -internetChessServerHost host<dd><a name="index-icshost_002c-option-317"></a><a name="index-internetChessServerHost_002c-option-318"></a>The Internet host name or address of the chess server to connect
1970 to when in ICS mode. Default: <code>chessclub.com</code>.
1971 Another popular chess server to try is <code>freechess.org</code>.
1972 If your site doesn't have a working Internet name server, try
1973 specifying the host address in numeric form.
1975 to specify the numeric address when using the icshelper option
1976 with timestamp or timeseal (see below).
1977 <br><dt>-icsport or -internetChessServerPort port-number<dd><a name="index-icsport_002c-option-319"></a><a name="index-internetChessServerPort_002c-option-320"></a>The port number to use when connecting to a chess server in ICS
1978 mode. Default: 5000.
1979 <br><dt>-icshelper or -internetChessServerHelper prog-name<dd><a name="index-icshelper_002c-option-321"></a><a name="index-internetChessServerHelper_002c-option-322"></a>An external helper program used to communicate with the chess server.
1980 You would set it to "timestamp" for ICC (chessclub.com) or
1981 "timeseal" for FICS (freechess.org), after
1982 obtaining the correct version of timestamp or timeseal for your
1983 computer. See "help timestamp" on ICC and "help timeseal" on FICS.
1984 This option is shorthand for <code>-useTelnet -telnetProgram program</code>.
1985 <br><dt>-telnet/-xtelnet or -useTelnet true/false<dd><a name="index-telnet_002c-option-323"></a><a name="index-useTelnet_002c-option-324"></a>This option is poorly named; it should be called useHelper.
1986 If set to true, it instructs XBoard to run an external
1987 program to communicate with the Internet Chess Server.
1988 The program to use is given by the telnetProgram option.
1990 false (the default), XBoard opens a TCP socket and uses its own
1991 internal implementation of the telnet protocol to communicate with the
1992 ICS. See <a href="#Firewalls">Firewalls</a>.
1993 <br><dt>-telnetProgram prog-name<dd><a name="index-telnetProgram_002c-option-325"></a>This option is poorly named; it should be called helperProgram.
1994 It gives the name of the telnet program to be used with
1995 the <code>gateway</code> and <code>useTelnet</code> options. The default is
1996 <samp><span class="file">telnet</span></samp>. The telnet program is invoked with the value of
1997 <code>internetChessServerHost</code> as its first argument and the value
1998 of <code>internetChessServerPort</code> as its second argument.
1999 See <a href="#Firewalls">Firewalls</a>.
2000 <br><dt>-gateway host-name<dd><a name="index-gateway_002c-option-326"></a>If this option is set to a host name, XBoard communicates with the
2001 Internet Chess Server by using <samp><span class="file">rsh</span></samp> to run
2002 the <code>telnetProgram</code> on the given host,
2003 instead of using its own internal implementation
2004 of the telnet protocol. You can substitute a different remote shell
2005 program for <samp><span class="file">rsh</span></samp> using the <code>remoteShell</code> option described below.
2006 See <a href="#Firewalls">Firewalls</a>.
2007 <br><dt>-internetChessServerCommPort or -icscomm dev-name<dd><a name="index-internetChessServerCommPort_002c-option-327"></a><a name="index-icscomm_002c-option-328"></a>If this option is set, XBoard communicates with the ICS through
2008 the given character I/O device instead of opening a TCP connection.
2009 Use this option if your system does not have any kind of
2010 Internet connection itself (not even a SLIP or PPP connection),
2011 but you do have dial-up access (or a hardwired terminal line) to
2012 an Internet service provider from which you can telnet to the ICS.
2014 <p>The support for this option in XBoard is minimal. You need to
2015 set all communication parameters and tty modes before you enter
2018 <p>Use a script something like this:
2020 <pre class="example"> stty raw -echo 9600 > /dev/tty00
2021 xboard -ics -icscomm /dev/tty00
2023 <p>Here replace ‘<samp><span class="samp">/dev/tty00</span></samp>’ with the name of the device that your
2024 modem is connected to. You might have to add several more
2025 options to these stty commands. See the man pages for <samp><span class="file">stty</span></samp>
2026 and <code>tty</code> if you run into problems. Also, on many systems stty
2027 works on its standard input instead of standard output, so you
2028 have to use ‘<samp><span class="samp"><</span></samp>’ instead of ‘<samp><span class="samp">></span></samp>’.
2030 <p>If you are using linux, try starting with the script below.
2031 Change it as necessary for your installation.
2033 <pre class="example"> #!/bin/sh -f
2034 # configure modem and fire up XBoard
2038 stty 2400 ; stty raw ; stty hupcl ; stty -clocal
2039 stty ignbrk ; stty ignpar ; stty ixon ; stty ixoff
2040 stty -iexten ; stty -echo
2042 xboard -ics -icscomm /dev/modem
2044 <p class="noindent">After you start XBoard in this way, type whatever commands are
2045 necessary to dial out to your Internet provider and log in.
2046 Then telnet to ICS, using a command like
2047 <kbd>telnet chessclub.com 5000</kbd>.
2048 Important: See the paragraph below about extra echoes,
2049 in <a href="#Limitations">Limitations</a>.
2050 <br><dt>-icslogon or -internetChessServerLogonScript file-name<dd><a name="index-icslogon_002c-option-329"></a><a name="index-internetChessServerLogonScript_002c-option-330"></a><a name="index-g_t_002eicsrc-331"></a>Whenever XBoard connects to the Internet Chess Server,
2051 if it finds a file with the name given in this option, it feeds the
2052 file's contents to the ICS as commands. The default file name
2053 is <samp><span class="file">.icsrc</span></samp>.
2054 Usually the first two lines of the file should be
2055 your ICS user name and password.
2056 The file can be either in $CHESSDIR, in XBoard's working
2057 directory if CHESSDIR is not set, or in your home directory.
2058 <br><dt>-msLoginDelay delay<dd><a name="index-msLoginDelay_002c-option-332"></a>If you experience trouble logging on to an ICS when using the
2059 <code>-icslogon</code> option, inserting some delay between characters
2060 of the logon script may help. This option adds <code>delay</code>
2061 milliseconds of delay between characters. Good values to try
2063 <br><dt>-icsinput/-xicsinput or -internetChessServerInputBox true/false<dd><a name="index-icsinput_002c-option-333"></a><a name="index-internetChessServerInputBox_002c-option-334"></a>Sets the ICS Input Box menu option. See <a href="#Mode-Menu">Mode Menu</a>. Default: false.
2064 <br><dt>-autocomm/-xautocomm or -autoComment true/false<dd><a name="index-autocomm_002c-option-335"></a><a name="index-autoComment_002c-option-336"></a>Sets the Auto Comment menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2065 <br><dt>-autoflag/-xautoflag or -autoCallFlag true/false<dd><a name="index-autoflag_002c-option-337"></a><a name="index-autoCallFlag_002c-option-338"></a>Sets the Auto Flag menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2066 <br><dt>-autobs/-xautobs or -autoObserve true/false<dd><a name="index-autobs_002c-option-339"></a><a name="index-autoObserve_002c-option-340"></a>Sets the Auto Observe menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2067 <br><dt>-autoKibitz<dd><a name="index-autoKibitz_002c-option-341"></a>Enables kibitzing of the engines last thinking output (depth, score, time, speed, PV)
2069 to the ICS, in zippy mode. The option <code>showThinking</code> must be switched on for
2070 this option to work.
2071 Also diverts similar kibitz information of an opponent engine that is playing you
2072 through the ICS to the engine-output window, as if the engine was playing locally.
2073 <br><dt>-seekGraph true/false or -sg<dd><a name="index-seekGraph_002c-option-342"></a><a name="index-sg_002c-option-343"></a>Enables displaying of the seek graph by left-clicking the board when
2074 you are logged on to an ICS and currently idle.
2075 The seek graph show all players currently seeking games on the ICS,
2076 plotted according to their rating and the time control of the game they seek,
2077 in three different colors (for rated, unrated and wild games).
2078 Computer ads are displayed as squares, human ads are dots.
2080 <br><dt>-autoRefresh true/false<dd><a name="index-autoRefresh_002c-option-344"></a>Enables automatic updating of the seek graph,
2081 by having the ICS send a running update of all newly placed
2082 and removed seek ads.
2083 This consumes a substantial amount of communication bandwidth,
2084 and is only supported for FICS and ICC.
2086 <br><dt>-backgroundObserve true/false<dd><a name="index-backgroundObserve_002c-option-345"></a>When true, boards sent to you by the ICS from other games while you are playing
2087 (e.g. because you are observing them)
2088 will not be automatically displayed.
2089 Only a summary of time left and material of both players will appear
2090 in the message field above the board.
2091 XBoard will remember the last board it has received this way,
2092 and will display it in stead of the position in your own game
2093 when you press the right mouse button.
2094 No other information is stored on such games observed in the background;
2095 you cannot save such a game later, or step through its moves.
2096 This feature is provided solely for the benefit of bughouse players,
2097 to enable them to peek at their partner's game without the need
2100 <br><dt>-dualBoard true/false<dd><a name="index-dualBoard_002c-option-346"></a>In combination with -backgroundObserve true, this option will display
2101 the board of the background game side by side with that of your own game,
2102 so you can have it in view permanently.
2103 Any board or holdings info coming in will be displayed on the secondary
2105 This feature is still experimental and largely unfinished.
2106 There is no animation or highlighting of moves on the secondary board.
2108 <br><dt>-disguisePromotedPieces true/false<dd><a name="index-disguisePromotedPieces_002c-option-347"></a>When set promoted Pawns in crazyhouse/bughouse are displayed identical
2109 to primordial pieces of the same type, rather than distinguishable.
2111 <br><dt>-moves/-xmoves or -getMoveList true/false<dd><a name="index-moves_002c-option-348"></a><a name="index-getMoveList_002c-option-349"></a>Sets the Get Move List menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2112 <br><dt>-alarm/-xalarm or -icsAlarm true/false<dd><a name="index-alarm_002c-option-350"></a><a name="index-icsAlarm_002c-option-351"></a>Sets the ICS Alarm menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2113 <br><dt>-icsAlarmTime ms<dd><a name="index-icsAlarmTime_002c-option-352"></a>Sets the time in milliseconds for the ICS Alarm menu option.
2114 See <a href="#Options-Menu">Options Menu</a>. Default: 5000.
2115 <br><dt>lowTimeWarning true/false<dd><a name="index-lowTimeWarning_002c-option-353"></a>Controls a color change of the board as a warning your time is running out.
2116 See <a href="#Options-Menu">Options Menu</a>. Default: false.
2117 <br><dt>-pre/-xpre \fRor\fB -premove true/false<dd><a name="index-pre_002c-option-354"></a><a name="index-premove_002c-option-355"></a>Sets the Premove menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2118 <br><dt>-prewhite/-xprewhite or -premoveWhite<dt>-preblack/-xpreblack or -premoveBlack<dt>-premoveWhiteText string<dt>-premoveBlackText string<dd><a name="index-prewhite_002c-option-356"></a><a name="index-premoveWhite_002c-option-357"></a><a name="index-preblack_002c-option-358"></a><a name="index-premoveBlack_002c-option-359"></a><a name="index-premoveWhiteText_002c-option-360"></a><a name="index-premoveBlackText_002c-option-361"></a>Set the menu options for specifying the first move for either color.
2119 See <a href="#Options-Menu">Options Menu</a>. Defaults: false and empty strings, so no pre-moves.
2120 <br><dt>-quiet/-xquiet or -quietPlay true/false<dd><a name="index-quiet_002c-option-362"></a><a name="index-quietPlay_002c-option-363"></a>Sets the Quiet Play menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2121 <br><dt>-colorizeMessages or -colorize/-xcolorize<dd><a name="index-Colors-364"></a><a name="index-colorize_002c-option-365"></a><a name="index-colorizeMessages_002c-option-366"></a>Setting colorizeMessages
2122 to true tells XBoard to colorize the messages received from
2123 the ICS. Colorization works only if your xterm
2124 supports ISO 6429 escape sequences for changing text colors.
2126 <br><dt>-colorShout foreground,background,bold<dt>-colorSShout foreground,background,bold<dt>-colorCShout foreground,background,bold<dt>-colorChannel1 foreground,background,bold<dt>-colorChannel foreground,background,bold<dt>-colorKibitz foreground,background,bold<dt>-colorTell foreground,background,bold<dt>-colorChallege foreground,background,bold<dt>-colorRequest foreground,background,bold<dt>-colorSeek foreground,background,bold<dt>-colorNormal foreground,background,bold<dd><a name="index-Colors-367"></a><a name="index-colorShout_002c-option-368"></a><a name="index-colorSShout_002c-option-369"></a><a name="index-colorCShout_002c-option-370"></a><a name="index-colorChannel1_002c-option-371"></a><a name="index-colorChannel_002c-option-372"></a><a name="index-colorKibitz_002c-option-373"></a><a name="index-colorTell_002c-option-374"></a><a name="index-colorChallenge_002c-option-375"></a><a name="index-colorRequest_002c-option-376"></a><a name="index-colorSeek_002c-option-377"></a><a name="index-colorNormal_002c-option-378"></a>These options set the colors used when colorizing ICS messages.
2127 All ICS messages are grouped into one of these categories:
2128 shout, sshout, channel 1, other channel, kibitz, tell, challenge,
2129 request (including abort, adjourn, draw, pause, and takeback), or
2130 normal (all other messages).
2132 <p>Each foreground or background argument can be one of the following:
2133 black, red, green, yellow, blue, magenta, cyan, white, or default.
2134 Here “default” means the default foreground or background color of
2135 your xterm. Bold can be 1 or 0. If background is omitted, “default”
2136 is assumed; if bold is omitted, 0 is assumed.
2138 <br><dt>-soundProgram progname<dd><a name="index-soundProgram_002c-option-379"></a><a name="index-Sounds-380"></a>If this option is set to a sound-playing program that is installed and
2139 working on your system, XBoard can play sound files when certain
2140 events occur, listed below. The default program name is "play". If
2141 any of the sound options is set to "$", the event rings the terminal
2142 bell by sending a ^G character to standard output, instead of playing
2143 a sound file. If an option is set to the empty string "", no sound is
2144 played for that event.
2145 <br><dt>-soundDirectory directoryname<dd><a name="index-soundDirectory_002c-option-381"></a><a name="index-Sounds-382"></a>This option specifies where XBoard will look for sound files,
2146 when these are not given as an absolute path name.
2147 <br><dt>-soundShout filename<dt>-soundSShout filename<dt>-soundCShout filename<dt>-soundChannel filename<dt>-soundChannel1 filename<dt>-soundKibitz filename<dt>-soundTell filename<dt>-soundChallenge filename<dt>-soundRequest filename<dt>-soundSeek filename<dd><a name="index-soundShout_002c-option-383"></a><a name="index-soundSShout_002c-option-384"></a><a name="index-soundCShout_002c-option-385"></a><a name="index-soundChannel_002c-option-386"></a><a name="index-soundChannel1_002c-option-387"></a><a name="index-soundKibitz_002c-option-388"></a><a name="index-soundTell_002c-option-389"></a><a name="index-soundChallenge_002c-option-390"></a><a name="index-soundRequest_002c-option-391"></a><a name="index-soundSeek_002c-option-392"></a>These sounds are triggered in the same way as the colorization events
2148 described above. They all default to "", no sound. They are played
2149 only if the colorizeMessages is on.
2150 CShout is synonymous with SShout.
2151 <br><dt>-soundMove filename<dd><a name="index-soundMove_002c-option-393"></a>This sound is used by the Move Sound menu option. Default: "$".
2152 <br><dt>-soundIcsAlarm filename<dd><a name="index-soundIcsAlarm_002c-option-394"></a>This sound is used by the ICS Alarm menu option. Default: "$".
2153 <br><dt>-soundIcsWin filename<dd><a name="index-soundIcsWin_002c-option-395"></a>This sound is played when you win an ICS game. Default: "" (no sound).
2154 <br><dt>-soundIcsLoss filename<dd><a name="index-soundIcsLoss_002c-option-396"></a>This sound is played when you lose an ICS game. Default: "" (no sound).
2155 <br><dt>-soundIcsDraw filename<dd><a name="index-soundIcsDraw_002c-option-397"></a>This sound is played when you draw an ICS game. Default: "" (no sound).
2156 <br><dt>-soundIcsUnfinished filename<dd><a name="index-soundIcsUnfinished_002c-option-398"></a>This sound is played when an ICS game that you are participating in is
2157 aborted, adjourned, or otherwise ends inconclusively. Default: "" (no
2162 <a name="Load-and-Save-options"></a>
2164 Next: <a rel="next" accesskey="n" href="#User-interface-options">User interface options</a>,
2165 Previous: <a rel="previous" accesskey="p" href="#ICS-options">ICS options</a>,
2166 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2170 <h3 class="section">4.5 Load and Save options</h3>
2172 <p><a name="index-Options_002c-Load-and-Save-399"></a><a name="index-Load-and-Save-options-400"></a>
2174 <dt>-lgf or -loadGameFile file<dt>-lgi or -loadGameIndex index<dd><a name="index-lgf_002c-option-401"></a><a name="index-loadGameFile_002c-option-402"></a><a name="index-lgi_002c-option-403"></a><a name="index-loadGameIndex_002c-option-404"></a>If the <code>loadGameFile</code> option is set, XBoard loads the specified
2175 game file at startup. The file name <samp><span class="file">-</span></samp> specifies the standard
2176 input. If there is more than one game in the file, XBoard
2177 pops up a menu of the available games, with entries based on their PGN
2178 (Portable Game Notation) tags.
2179 If the <code>loadGameIndex</code> option is set to ‘<samp><span class="samp">N</span></samp>’, the menu is suppressed
2180 and the N th game found in the file is loaded immediately.
2181 The menu is also suppressed if <code>matchMode</code> is enabled or if the game file
2182 is a pipe; in these cases the first game in the file is loaded immediately.
2183 Use the <samp><span class="file">pxboard</span></samp> shell script provided with XBoard if you
2184 want to pipe in files containing multiple games and still see the menu.
2185 If the loadGameIndex specifies an index -1, this triggers auto-increment
2186 of the index in <code>matchMode</code>, which means that after every game the
2187 index is incremented by one, causing each game of the match to be played
2188 from the next game in the file. Similarly, specifying an index value of -2
2189 causes the index to be incremented every two games, so that each game
2190 in the file is used twice (with reversed colors).
2191 The <code>rewindIndex</code> option causes the index to be reset to the
2192 first game of the file when it has reached a specified value.
2193 <br><dt>-rewindIndex n<dd>Causes a position file or game file to be rewound to its beginning after n
2194 positions or games in auto-increment <code>matchMode</code>.
2195 See <code>loadPositionIndex</code> and <code>loadGameIndex</code>.
2196 default: 0 (no rewind).
2197 <br><dt>-td or -timeDelay seconds<dd><a name="index-td_002c-option-405"></a><a name="index-timeDelay_002c-option-406"></a>Time delay between moves during ‘<samp><span class="samp">Load Game</span></samp>’ or ‘<samp><span class="samp">Analyze File</span></samp>’.
2198 Fractional seconds are allowed; try ‘<samp><span class="samp">-td 0.4</span></samp>’.
2199 A time delay value of -1 tells
2200 XBoard not to step through game files automatically. Default: 1 second.
2201 <br><dt>-sgf or -saveGameFile file<dd><a name="index-sgf_002c-option-407"></a><a name="index-saveGameFile_002c-option-408"></a>If this option is set, XBoard appends a record of every game
2202 played to the specified file. The file name <samp><span class="file">-</span></samp> specifies the
2204 <br><dt>-autosave/-xautosave or -autoSaveGames true/false<dd><a name="index-autosave_002c-option-409"></a><a name="index-autoSaveGames_002c-option-410"></a>Sets the Auto Save menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2205 Ignored if <code>saveGameFile</code> is set.
2206 <br><dt>-onlyOwnGames true/false<dd><a name="index-onlyOwnGames_002c-option-411"></a>Suppresses auto-saving of ICS observed games. Default: false.
2207 <br><dt>-lpf or -loadPositionFile file<dt>-lpi or -loadPositionIndex index<dd><a name="index-lpf_002c-option-412"></a><a name="index-loadPositionFile_002c-option-413"></a><a name="index-lpi_002c-option-414"></a><a name="index-loadPositionIndex_002c-option-415"></a>If the <code>loadPositionFile</code> option is set, XBoard loads the
2208 specified position file at startup. The file name <samp><span class="file">-</span></samp> specifies the
2209 standard input. If the <code>loadPositionIndex</code> option is set to N,
2210 the Nth position found in the file is loaded; otherwise the
2211 first position is loaded.
2212 If the loadPositionIndex specifies an index -1, this triggers auto-increment
2213 of the index in <code>matchMode</code>, which means that after every game the
2214 index is incremented by one, causing each game of the match to be played
2215 from the next position in the file. Similarly, specifying an index value of -2
2216 causes the index to be incremented every two games, so that each position
2217 in the file is used twice (with the engines playing opposite colors).
2218 The <code>rewindIndex</code> option causes the index to be reset to the
2219 first position of the file when it has reached a specified value.
2220 <br><dt>-spf or -savePositionFile file<dd><a name="index-spf_002c-option-416"></a><a name="index-savePositionFile_002c-option-417"></a>If this option is set, XBoard appends the final position reached
2221 in every game played to the specified file. The file name <samp><span class="file">-</span></samp>
2222 specifies the standard output.
2223 <br><dt>-pgnExtendedInfo true/false<dd><a name="index-pgnExtendedInfo_002c-option-418"></a>If this option is set, XBoard saves depth, score and time used for each
2224 move that the engine found as a comment in the PGN file.
2226 <br><dt>-pgnEventHeader string<dd><a name="index-pgnEventHeader_002c-option-419"></a>Sets the name used in the PGN event tag to string.
2227 Default: "Computer Chess Game".
2228 <br><dt>-pgnNumberTag true/false<dd><a name="index-pgnNumberTag_002c-option-420"></a>Include the (unique) sequence number of a tournament game into the saved
2229 PGN file as a 'number' tag.
2231 <br><dt>-saveOutOfBookInfo true/false<dd><a name="index-saveOutOfBookInfo_002c-option-421"></a>Include the information on how the engine(s) game out of its opening book
2232 in a special 'annotator' tag with the PGN file.
2234 <br><dt>-oldsave/-xoldsave or -oldSaveStyle true/false<dd><a name="index-oldsave_002c-option-422"></a><a name="index-oldSaveStyle_002c-option-423"></a>Sets the Old Save Style menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2235 <br><dt>-gameListTags string<dd><a name="index-gameListTags_002c-option-424"></a>The character string lists the PGN tags that should be printed in the
2236 Game List, and their order. The meaning of the codes is e=event,
2237 s=site, d=date, o=round, p=players, r=result, w=white Elo, b=black Elo,
2238 t=time control, v=variant, a=out-of-book info, c=result comment.
2240 <br><dt>-ini or -settingsFile filename<dt>-saveSettingsFile filename<dt>@filename<dd><a name="index-saveSettingsFile_002c-option-425"></a><a name="index-SettingsFile_002c-option-426"></a><a name="index-init_002c-option-427"></a><a name="index-at-sign_002c-option-428"></a>When XBoard encounters an option -settingsFile (or -ini for short),
2241 or @filename, it tries to read the mentioned file,
2242 and substitutes the contents of it (presumaby more command-line options)
2243 in place of the option.
2244 In the case of -ini or -settingsFile, the name of a successfully read
2245 settings file is also remembered as the file to use for saving settings
2246 (automatically on exit, or on user command).
2247 An option of the form @filename does not affect saving.
2248 The option -saveSettingsFile does specify a name of the file to use
2249 for saving, without reading any options from it, and is thus also effective
2250 when the file did not exist yet.
2251 So the settings will be saved to the file specified in the last
2252 -saveSettingsFile or succesfull -settingsFile / -ini command,
2253 if any, and in /etc/xboard/xboard.conf otherwise.
2254 Usualy the latter is only accessible for the system administrator, though,
2255 and will be used to contain system-wide default setings, amongst which
2256 a -saveSettingsFile and -settingsFile options to specify a settings file
2257 accessible to the individual user, such as ~/.xboardrc in the user's
2259 <br><dt>-saveSettingsOnExit true/false<dd><a name="index-saveSettingsOnExit_002c-option-429"></a>Controls saving of options on the settings file. See <a href="#Options-Menu">Options Menu</a>.
2264 <a name="User-interface-options"></a>
2266 Next: <a rel="next" accesskey="n" href="#Adjudication-Options">Adjudication Options</a>,
2267 Previous: <a rel="previous" accesskey="p" href="#Load-and-Save-options">Load and Save options</a>,
2268 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2272 <h3 class="section">4.6 User interface options</h3>
2274 <p><a name="index-User-interface-options-430"></a><a name="index-Options_002c-User-interface-431"></a>
2276 <dt>-display<dt>-geometry<dt>-iconic<dt>-name<dd><a name="index-display_002c-option-432"></a><a name="index-geometry_002c-option-433"></a><a name="index-iconic_002c-option-434"></a><a name="index-resource-name_002c-option-435"></a>These and most other standard Xt options are accepted.
2277 <br><dt>-noGUI<dd><a name="index-noGUI_002c-option-436"></a>Suppresses all GUI functions of XBoard
2278 (to speed up automated ultra-fast engine-engine games, which you don't want to watch).
2279 There will be no board or clock updates, no printing of moves,
2280 and no update of the icon on the task bar in this mode.
2281 <br><dt>-logoSize N<dd><a name="index-logoSize_002c-option-437"></a>This option controls the drawing of player logos next to the clocks.
2282 The integer N specifies the width of the logo in pixels;
2283 the logo height will always be half the width.
2284 When N = 0, no logos will be diplayed.
2286 <br><dt>-firstLogo imagefile<dt>-secondLogo imagefile<dd><a name="index-firstLogo_002c-option-438"></a><a name="index-secondLogo_002c-option-439"></a>Specify the images to be used as player logos when <code>logoSize</code>
2287 is non-zero, next to the white and black clocks, respectively.
2288 <br><dt>-autoLogo true/false<br><dt>-logoDir filename<dd><a name="index-autoLogo_002c-option-440"></a><a name="index-logoDir_002c-option-441"></a>When <code>autoLogo</code> is set, XBoard will search for a PNG image file
2289 with the name of the engine or ICS in the directory specified
2290 by <code>logoDir</code>.
2291 <br><dt>-recentEngines number<dt>-recentEngineList list<dd><a name="index-recentEngines_002c-option-442"></a><a name="index-recentEngineList_002c-option-443"></a>When the number is larger than zero, it determines how many recently
2292 used engines will be appended at the bottom of the ‘<samp><span class="samp">Engines</span></samp>’ menu.
2293 The engines will be saved in your settings file as the option
2294 <code>recentEngineList</code>, by their nicknames,
2295 and the most recently used one will always be sorted to the top.
2296 If the list after that is longer than the specified number,
2297 the last one is discarded.
2298 Changes in the list will only become visible the next session,
2299 provided you saved the settings.
2301 <br><dt>-autoInstall list<dd><a name="index-autoInstall_002c-option-444"></a>When the list is set to a non-empty string, XBoard will scan the
2302 operating system's plugin directory for engines supporting UCI
2303 and XBoard protocol at startup.
2304 When it finds an engine that was installed after it last saved
2305 its settings, a line to launch that engine (as per specs in
2306 the plugin file) is appended to the -firstChessProgramNames
2307 list of installed engines.
2308 In the future it will be possible to use the list to limit
2309 this automatic adding of engines to a certain types of variants.
2310 <br><dt>-oneClickMove true/false<dd><a name="index-oneClickMove_002c-option-445"></a>When set, this option allows you to enter moves by only clicking the to-
2311 or from-square, when only a single legal move to or from that square
2313 Double-clicking a piece (or clicking an already selected piece)
2314 will instruct that piece to make the only capture it can legally do.
2316 <br><dt>-movesound/-xmovesound or -ringBellAfterMoves true/false<dd><a name="index-movesound_002c-option-446"></a><a name="index-bell_002c-option-447"></a><a name="index-ringBellAfterMoves_002c-option-448"></a>Sets the Move Sound menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2317 For compatibility with old XBoard versions, -bell/-xbell are also
2318 accepted as abbreviations for this option.
2319 <br><dt>-exit/-xexit or -popupExitMessage true/false<dd><a name="index-exit_002c-option-449"></a><a name="index-popupExitMessage_002c-option-450"></a>Sets the Popup Exit Message menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2320 <br><dt>-popup/-xpopup or -popupMoveErrors true/false<dd><a name="index-popup_002c-option-451"></a><a name="index-popupMoveErrors_002c-option-452"></a>Sets the Popup Move Errors menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2321 <br><dt>-queen/-xqueen or -alwaysPromoteToQueen true/false<dd><a name="index-queen_002c-option-453"></a><a name="index-alwaysPromoteToQueen_002c-option-454"></a>Sets the Always Queen menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2322 <br><dt>-sweepPromotions true/false<dd><a name="index-sweepPromotion_002c-option-455"></a>Sets the ‘<samp><span class="samp">Almost Always Promote to Queen</span></samp>’ menu option.
2323 See <a href="#Options-Menu">Options Menu</a>. Default: false.
2324 <br><dt>-legal/-xlegal or -testLegality true/false<dd><a name="index-legal_002c-option-456"></a><a name="index-testLegality_002c-option-457"></a>Sets the Test Legality menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2325 <br><dt>-size or -boardSize (sizeName | n1,n2,n3,n4,n5,n6,n7)<dd><a name="index-size_002c-option-458"></a><a name="index-boardSize_002c-option-459"></a><a name="index-board-size-460"></a>Determines how large the board will be, by selecting the pixel size
2326 of the pieces and setting a few related parameters.
2327 The sizeName can be one of: Titanic, giving 129x129 pixel pieces,
2328 Colossal 116x116, Giant 108x108, Huge 95x95, Big 87x87, Large 80x80, Bulky 72x72,
2329 Medium 64x64, Moderate 58x58, Average 54x54, Middling 49x49, Mediocre
2330 45x45, Small 40x40, Slim 37x37, Petite 33x33, Dinky 29x29, Teeny 25x25,
2332 Xboard installs with a set of scalable (svg) piece images,
2333 which it scales to any of the requested sizes.
2334 The square size can further be continuously scaled by sizing the board window,
2335 but this only adapts the size of the pieces,
2336 and has no effect on the width of the grid lines or the font choice
2337 (both of which would depend on he selected boardSize).
2338 The default depends on the size of your screen; it is approximately the
2339 largest size that will fit without clipping.
2341 <p>You can select other sizes or vary other layout parameters by providing
2342 a list of comma-separated values (with no spaces) as the argument.
2343 You do not need to provide all the values; for any you omit from the
2344 end of the list, defaults are taken from the nearest built-in size.
2345 The value <code>n1</code> gives the piece size, <code>n2</code> the width of the
2347 between squares, <code>n3</code> the desired size for the
2348 clockFont, <code>n4</code> the desired size for the coordFont,
2349 <code>n5</code> the desired size for the messageFont,
2350 <code>n6</code> the smallLayout flag (0 or 1),
2351 and <code>n7</code> the tinyLayout flag (0 or 1).
2352 All dimensions are in pixels.
2353 If the border between squares is eliminated (0 width), the various
2354 highlight options will not work, as there is nowhere to draw the highlight.
2355 If smallLayout is 1 and <code>titleInWindow</code> is true,
2356 the window layout is rearranged to make more room for the title.
2357 If tinyLayout is 1, the labels on the menu bar are abbreviated
2358 to one character each and the buttons in the button bar are made narrower.
2359 <br><dt>-overrideLineGap n<dd><a name="index-overrideLineGap_002c-option-461"></a>When n >= 0, this forces the width of the black border between squares
2360 to n pixels for any board size. Mostly used to suppress the grid
2361 entirely by setting n = 0, e.g. in xiangqi or just getting a prettier
2362 picture. When n < 0 this the size-dependent width of the grid lines
2363 is used. Default: -1.
2364 <br><dt>-coords/-xcoords or -showCoords true/false<dd><a name="index-coords_002c-option-462"></a><a name="index-showCoords_002c-option-463"></a>Sets the Show Coords menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2365 The <code>coordFont</code> option specifies what font to use.
2366 <br><dt>-autoraise/-xautoraise or -autoRaiseBoard true/false<dd><a name="index-autoraise_002c-option-464"></a><a name="index-autoRaiseBoard_002c-option-465"></a>Sets the Auto Raise Board menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2367 <br><dt>-autoflip/-xautoflip or -autoFlipView true/false<dd><a name="index-autoflip_002c-option-466"></a><a name="index-autoFlipView_002c-option-467"></a>Sets the Auto Flip View menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2368 <br><dt>-flip/-xflip or -flipView true/false<dd><a name="index-flip_002c-option-468"></a><a name="index-flipView_002c-option-469"></a>If Auto Flip View is not set, or if you are observing but not participating
2369 in a game, then the positioning of the board at the start of each game
2370 depends on the flipView option. If flipView is false (the default),
2371 the board is positioned so that the white pawns move from the bottom to the
2372 top; if true, the black pawns move from the bottom to the top.
2373 In any case, the Flip menu option (see <a href="#Options-Menu">Options Menu</a>)
2374 can be used to flip the board after
2376 <br><dt>-title/-xtitle or -titleInWindow true/false<dd><a name="index-title_002c-option-470"></a><a name="index-titleInWindow_002c-option-471"></a>If this option is true, XBoard displays player names (for ICS
2377 games) and game file names (for ‘<samp><span class="samp">Load Game</span></samp>’) inside its main
2378 window. If the option is false (the default), this information is
2379 displayed only in the window banner. You probably won't want to
2380 set this option unless the information is not showing up in the
2381 banner, as happens with a few X window managers.
2382 <br><dt>-buttons/-xbuttons or -showButtonBar True/False<dd><a name="index-buttons_002c-option-472"></a><a name="index-showButtonBar_002c-option-473"></a>If this option is False, xboard omits the [<<] [<] [P] [>] [>>] button
2383 bar from the window, allowing the message line to be wider. You can
2384 still get the functions of these buttons using the menus or their keyboard
2385 shortcuts. Default: true.
2386 <br><dt>-evalZoom factor<dd><a name="index-evalZoom_002c-option-474"></a>The score interval (-1,1) is blown up on the vertical axis of
2387 the Evaluation Graph by the given factor.
2389 <br><dt>-evalThreshold n<dd><a name="index-evalThreshold_002c-option-475"></a>Score below n (centiPawn) are plotted as 0 in the Evaluation Graph.
2391 <br><dt>-mono/-xmono or -monoMode true/false<dd><a name="index-mono_002c-option-476"></a><a name="index-monoMode_002c-option-477"></a>Determines whether XBoard displays its pieces and squares with
2392 two colors (true) or four (false). You shouldn't have to
2393 specify <code>monoMode</code>; XBoard will determine if it is necessary.
2394 <br><dt>-showTargetSquares true/false<dd><a name="index-showTargetSquares_002c-option-478"></a>Determines whether XBoard can highlight the squares a piece has
2395 legal moves to, when you grab that piece with the mouse.
2397 <br><dt>-flashCount count<dt>-flashRate rate<dt>-flash/-xflash<dd><a name="index-flashCount_002c-option-479"></a><a name="index-flashRate_002c-option-480"></a><a name="index-flash_002c-option-481"></a><a name="index-xflash_002c-option-482"></a>These options enable flashing of pieces when they
2398 land on their destination square.
2399 <code>flashCount</code>
2400 tells XBoard how many times to flash a piece after it
2401 lands on its destination square.
2402 <code>flashRate</code>
2403 controls the rate of flashing (flashes/sec).
2406 sets flashCount to 3.
2408 sets flashCount to 0.
2409 Defaults: flashCount=0 (no flashing), flashRate=5.
2410 <br><dt>-highlight/-xhighlight or -highlightLastMove true/false<dd><a name="index-highlight_002c-option-483"></a><a name="index-highlightLastMove_002c-option-484"></a>Sets the Highlight Last Move menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2411 <br><dt>-highlightMoveWithArrow true/false<dd><a name="index-highlight-Arrow_002c-option-485"></a><a name="index-highlightMoveWithArrow_002c-option-486"></a>Sets the Highlight with Arrow menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2412 <br><dt>-blind/-xblind or -blindfold true/false<dd><a name="index-blind_002c-option-487"></a><a name="index-blindfold_002c-option-488"></a>Sets the Blindfold menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2413 <br><dt>-periodic/-xperiodic or -periodicUpdates true/false<dd><a name="index-periodic_002c-option-489"></a><a name="index-periodicUpdates_002c-option-490"></a>Controls updating of current move andnode counts in analysis mode. Default: true.
2414 <br><dt>-fSAN<dt>-sSAN<dd><a name="index-fSAN_002c-option-491"></a><a name="index-sSAN_002c-option-492"></a>Causes the PV in thinking output of the mentioned engine to be converted
2415 to SAN before it is further processed.
2416 Warning: this might lose engine output not understood by the parser,
2417 and uses a lot of CPU power.
2418 Default: the PV is displayed exactly as the engine produced it.
2419 <br><dt>-showEvalInMoveHistory true/false<dd><a name="index-showEvalInMoveHistory_002c-option-493"></a>Controls whether the evaluation scores and search depth of engine moves
2420 are displayed with the move in the move-history window.
2422 <br><dt>-clockFont font<dd><a name="index-clockFont_002c-option-494"></a><a name="index-Font_002c-clock-495"></a>The font used for the clocks. If the option value is a pattern
2423 that does not specify the font size, XBoard tries to choose an
2424 appropriate font for the board size being used.
2425 Default Xaw: -*-helvetica-bold-r-normal–*-*-*-*-*-*-*-*.
2426 Default GTK: Sans Bold %d.
2427 <br><dt>-coordFont font<dd><a name="index-coordFont_002c-option-496"></a><a name="index-Font_002c-coordinates-497"></a>The font used for rank and file coordinate labels if <code>showCoords</code>
2428 is true. If the option value is a pattern that does not specify
2429 the font size, XBoard tries to choose an appropriate font for
2430 the board size being used.
2431 Default Xaw: -*-helvetica-bold-r-normal–*-*-*-*-*-*-*-*.
2432 Default GTK: Sans Bold %d.
2433 <br><dt>-messageFont font<dd><a name="index-messageFont_002c-option-498"></a><a name="index-Font_002c-message-499"></a>The font used for popup dialogs, menus, etc.
2434 If the option value is a pattern that does not specify
2435 the font size, XBoard tries to choose an appropriate font for
2436 the board size being used.
2437 Default Xaw: -*-helvetica-medium-r-normal–*-*-*-*-*-*-*-*.
2438 Default GTK: Sans Bold %d.
2439 <a name="index-tagsFont_002c-option-500"></a><a name="index-Font_002c-tags-501"></a>The font used in the Edit Tags dialog.
2440 If the option value contains %d, XBoard will replace it by
2441 an appropriate font for the board size being used.
2442 (Only used in GTK build.)
2443 Default: Sans Normal %d.
2444 <a name="index-commentFont_002c-option-502"></a><a name="index-Font_002c-comment-503"></a>The font used in the Edit Comment dialog.
2445 If the option value contains %d, XBoard will replace it by
2446 an appropriate font for the board size being used.
2447 (Only used in GTK build.)
2448 Default: Sans Normal %d.
2449 <a name="index-icsFont_002c-option-504"></a><a name="index-Font_002c-ics-505"></a>The font used to display ICS output in the ICS Chat window.
2450 As ICS output often contains tables aligned by spaces,
2451 a mono-space font is recommended here.
2452 If the option value contains %d, XBoard will replace it by
2453 an appropriate font for the board size being used.
2454 (Only used in GTK build.)
2455 Default: Monospace Normal %d.
2456 <a name="index-moveHistoryFont_002c-option-506"></a><a name="index-Font_002c-moveHistory-507"></a>The font used in Move History and Engine Output windows.
2457 As these windows display mainly moves,
2458 one could use a figurine font here.
2459 If the option value contains %d, XBoard will replace it by
2460 an appropriate font for the board size being used.
2461 (Only used in GTK build.)
2462 Default: Sans Normal %d.
2463 <a name="index-gameListFont_002c-option-508"></a><a name="index-Font_002c-gameList-509"></a>The font used in the listbox of the Game List window.
2464 If the option value contains %d, XBoard will replace it by
2465 an appropriate font for the board size being used.
2466 (Only used in GTK build.)
2467 Default: Sans Bold %d.
2468 <br><dt>-fontSizeTolerance tol<dd><a name="index-fontSizeTolerance_002c-option-510"></a>In the font selection algorithm, a nonscalable font will be preferred
2469 over a scalable font if the nonscalable font's size differs
2470 by <code>tol</code> pixels
2471 or less from the desired size. A value of -1 will force
2472 a scalable font to always be used if available; a value of 0 will
2473 use a nonscalable font only if it is exactly the right size;
2474 a large value (say 1000) will force a nonscalable font to always be
2475 used if available. Default: 4.
2476 <br><dt>-pid or -pieceImageDirectory dir<dd><a name="index-pid_002c-option-511"></a><a name="index-pieceImageDirectory_002c-option-512"></a>This options control what piece images xboard uses.
2477 XBoard will look in the specified directory for an image in png
2478 or svg format for every piece type, with names like BlackQueen.svg,
2479 WhiteKnight.svg etc.
2480 When neither of these is found (or no valid directory is specified)
2481 XBoard will use the svg piece that was installed with it
2482 (from the source-tree directory ‘<samp><span class="samp">svg</span></samp>’).
2483 Both svg and png images will be scaled by XBoard to the required size,
2484 but the png pieces lose much in quality when scaled too much.
2486 <br><dt>-whitePieceColor color<dt>-blackPieceColor color<dt>-lightSquareColor color<dt>-darkSquareColor color<dt>-highlightSquareColor color<dt>-preoveHighlightColor color<dt>-lowTimeWarningColor color<dd><a name="index-Colors-513"></a><a name="index-whitePieceColor_002c-option-514"></a><a name="index-blackPieceColor_002c-option-515"></a><a name="index-lightSquareColor_002c-option-516"></a><a name="index-darkSquareColor_002c-option-517"></a><a name="index-highlightSquareColor_002c-option-518"></a><a name="index-premoveHighlightColor_002c-option-519"></a><a name="index-lowTimeWarningColor_002c-option-520"></a>Colors to use for the pieces, squares, and square highlights.
2489 <pre class="example"> -whitePieceColor #FFFFCC
2490 -blackPieceColor #202020
2491 -lightSquareColor #C8C365
2492 -darkSquareColor #77A26D
2493 -highlightSquareColor #FFFF00
2494 -premoveHighlightColor #FF0000
2495 -lowTimeWarningColor #FF0000
2497 <p>On a grayscale monitor you might prefer:
2499 <pre class="example"> -whitePieceColor gray100
2500 -blackPieceColor gray0
2501 -lightSquareColor gray80
2502 -darkSquareColor gray60
2503 -highlightSquareColor gray100
2504 -premoveHighlightColor gray70
2505 -lowTimeWarningColor gray70
2507 <p>The PieceColor options only work properly if the image files
2508 defining the pieces were pure black & white
2509 (possibly anti-aliased to produce gray scales
2510 and semi-transparancy),
2511 like the pieces images that come with the install.
2512 Their effect on colored pieces is undefined.
2513 The SquareColor option only have an effect
2514 when no board textures are used.
2515 <br><dt>-trueColors true/false<dd><a name="index-trueColors_002c-option-521"></a>When set, this option suppresses the effect of the
2516 PieceColor options mentioned above.
2517 This is recommended for images that are already colored.
2518 <br><dt>-useBoardTexture true/false<dt>-liteBackTextureFile filename<dt>-darkBackTextureFile filename<dd><a name="index-useBoardTexture_002c-option-522"></a><a name="index-liteBackTextureFile_002c-option-523"></a><a name="index-darkBackTextureFile_002c-option-524"></a>Indicate the png image files to be used for drawing the board squares,
2519 and if they should be used rather than using simple colors.
2520 The algorithm for cutting squares out of a given bitmap is such that
2521 the picture is perfectly reproduced when a bitmap the size of
2522 the complete board is given.
2523 If the filename ends in "-NxM.png", with integer N and M,
2524 it is assumed to contain a bitmap of a complete board of N files
2525 and M ranks, and XBoard will scale it to exactly match the
2526 current square size.
2527 If N=M=0 it scales the entire bitmap to the size of the board,
2528 irrespective of the number of files and ranks of the latter.
2529 Without any -NxM suffix textures are only blown up by an integer
2530 factor when they are smaller than the square size, or,
2531 when the name starts with "xq", too small to cover the
2532 complete Xiangqi board.
2533 Default: false and ""
2534 <br><dt>-drag/-xdrag or -animateDragging true/false<dd><a name="index-drag_002c-option-525"></a><a name="index-animateDragging_002c-option-526"></a>Sets the Animate Dragging menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2535 <br><dt>-animate/-xanimate or -animateMoving true/false<dd><a name="index-animate_002c-option-527"></a><a name="index-animateMoving_002c-option-528"></a>Sets the Animate Moving menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2536 <br><dt>-animateSpeed n<dd><a name="index-g_t_002danimateSpeed_002c-option-529"></a>Number of milliseconds delay between each animation frame when Animate
2538 <br><dt>-autoDisplayComment true/false<dt>-autoDisplayTags true/false<dd><a name="index-g_t_002dautoDisplayComment_002c-option-530"></a><a name="index-g_t_002dautoDisplayTags_002c-option-531"></a>If set to true, these options cause the window with the move comments,
2539 and the window with PGN tags, respectively, to pop up automatically when
2540 such tags or comments are encountered during the replaying a stored or
2541 loaded game. Default: true.
2542 <br><dt>-pasteSelection true/false<dd><a name="index-g_t_002dpasteSelection_002c-option-532"></a>If this option is set to true, the Paste Position and Paste Game
2543 options paste from the currently selected text. If false, they paste
2544 from the clipboard. Default: false.
2545 <br><dt>-autoCopyPV true|false<dd><a name="index-autoCopyPV_002c-option-533"></a>When this option is set, the position displayed on the board when
2546 you terminate a PV walk
2547 (initiated by a right-click on board or engine-output window)
2548 will be automatically put on the clipboard as FEN.
2550 <br><dt>-dropMenu true|false<dd><a name="index-dropMenu_002c-option-534"></a>This option allows you to emulate old behavior,
2551 where the right mouse button brings up the (now deprecated) drop menu
2552 rather than displaying the position at the end of the principal variation.
2554 <br><dt>-pieceMenu true|false<dd><a name="index-pieceMenu_002c-option-535"></a>This option allows you to emulate old behavior,
2555 where the right mouse button brings up the (now deprecated) piece menu
2556 in Edit Position mode.
2557 From this menu you can select the piece to put on the square you
2558 clicked to bring up the menu,
2559 or select items such as <kbd>clear board</kbd>.
2560 You can also <kbd>promote</kbd> or <kbd>demote</kbd> a clicked piece to convert
2561 it into an unorthodox piece that is not directly in the menu,
2562 or give the move to <kbd>black</kbd> or <kbd>white</kbd>.
2563 <br><dt>-variations true|false<dd><a name="index-variations_002c-option-536"></a>When this option is on, you can start new variations in Edit Game or
2564 Analyze mode by holding the Shift key down while entering a move.
2565 When it is off, the Shift key will be ignored.
2567 <br><dt>-appendPV true|false<dd><a name="index-appendPV_002c-option-537"></a>When this option is on, right-clicking a PV in the Engine Output window
2568 will play the first move of that PV in Analyze mode,
2569 or as many moves as you walk through by moving the mouse.
2571 <br><dt>-absoluteAnalysisScores true|false<dd><a name="index-absoluteAnalysisScores_002c-option-538"></a>When true, scores on the Engine Output window during analysis
2572 will be printed from the white point-of-view, rather than the
2573 side-to-move point-of-view.
2575 <br><dt>-scoreWhite true|false<dd><a name="index-scoreWhite_002c-option-539"></a>When true, scores will always be printed from the white point-of-view,
2576 rather than the side-to-move point-of-view.
2578 <br><dt>-memoHeaders true|false<dd><a name="index-memoHeaders_002c-option-540"></a>When true, column headers will be displayed in the Engine Output window
2579 for the depth, score, time and nodes data.
2580 Right-clicking on these headers will hide or show the corresponding data.
2581 (Not intended for dynamic use, as already printed data of the current search
2582 will not be affected!)
2587 <a name="Adjudication-Options"></a>
2589 Next: <a rel="next" accesskey="n" href="#Other-options">Other options</a>,
2590 Previous: <a rel="previous" accesskey="p" href="#User-interface-options">User interface options</a>,
2591 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2595 <h3 class="section">4.7 Adjudication Options</h3>
2597 <p><a name="index-Options_002c-adjudication-541"></a>
2599 <dt>-adjudicateLossThreshold n<dd><a name="index-adjudicateLossThreshold_002c-option-542"></a>If the given value is non-zero, XBoard adjudicates the game as a loss
2600 if both engines agree for a duration of 6 consecutive ply that the score
2601 is below the given score threshold for that engine. Make sure the score
2602 is interpreted properly by XBoard,
2603 using <code>-firstScoreAbs</code> and <code>-secondScoreAbs</code> if needed.
2604 Default: 0 (no adjudication)
2605 <br><dt>-adjudicateDrawMoves n<dd><a name="index-adjudicateDrawMoves_002c-option-543"></a>If the given value is non-zero, XBoard adjudicates the game as a draw
2606 if after the given number of moves it was not yet decided. Default: 0 (no adjudication)
2607 <br><dt>-checkMates true/false<dd><a name="index-checkMates_002c-option-544"></a>If this option is set, XBoard detects all checkmates and stalemates,
2608 and ends the game as soon as they occur.
2609 Legality-testing must be switched on for this option to work.
2611 <br><dt>-testClaims true/false<dd><a name="index-testClaims_002c-option-545"></a>If this option is set, XBoard verifies all result claims made by engines,
2612 and those who send false claims will forfeit the game because of it.
2613 Legality-testing must be switched on for this option to work. Default: true
2614 <br><dt>-materialDraws true/false<dd><a name="index-materialDraws_002c-option-546"></a>If this option is set, XBoard adjudicates games as draws when there is
2615 no sufficient material left to inflict a checkmate.
2616 This applies to KBKB with like bishops (any number, actually), and to KBK, KNK and KK.
2617 Legality-testing must be switched on for this option to work. Default: true
2618 <br><dt>-trivialDraws true/false<dd><a name="index-trivialDraws_002c-option-547"></a>If this option is set, XBoard adjudicates games as draws that cannot be
2619 usually won without opponent cooperation. This applies to KBKB with unlike bishops,
2620 and to KBKN, KNKN, KNNK, KRKR and KQKQ. The draw is called after 6 ply into these end-games,
2621 to allow quick mates that can occur in some exceptional positions to be found by the engines.
2622 KQKQ does not really belong in this category, and might be taken out in the future.
2623 (When bitbase-based adjudications are implemented.)
2624 Legality-testing must be on for this option to work. Default: false
2625 <br><dt>-ruleMoves n<dd><a name="index-ruleMoves_002c-option-548"></a>If the given value is non-zero, XBoard adjudicates the game as a draw after the given
2626 number of consecutive reversible moves. Engine draw claims are always accepted after 50 moves,
2627 irrespective of the given value of n.
2628 <br><dt>-repeatsToDraw n<dd>If the given value is non-zero, xboard adjudicates the game as a draw if a position
2629 is repeated the given number of times. Engines draw claims are always accepted after 3 repeats,
2630 (on the 3rd occurrence, actually), irrespective of the value of n.
2631 Beware that positions that have different castling or en-passant rights do not count
2632 as repeats, XBoard is fully e.p. and castling aware!
2636 <a name="Other-options"></a>
2638 Previous: <a rel="previous" accesskey="p" href="#Adjudication-Options">Adjudication Options</a>,
2639 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2643 <h3 class="section">4.8 Other options</h3>
2645 <p><a name="index-Options_002c-miscellaneous-549"></a>
2647 <dt>-ncp/-xncp or -noChessProgram true/false<dd><a name="index-ncp_002c-option-550"></a><a name="index-noChessProgram_002c-option-551"></a>If this option is true, XBoard acts as a passive chessboard; it
2648 does not start a chess engine at all. Turning on this option
2649 also turns off clockMode. Default: false.
2650 <br><dt>-viewer<dt>-viewerOptions string<dd><a name="index-viewer_002c-option-552"></a><a name="index-viewerOptions_002c-option-553"></a>Presence of the volatile option <code>viewer</code> on the command line
2651 will cause the value of the persistent option <code>viewerOptions</code>
2652 as stored in the settings file to be appended to the command line.
2653 The <code>view</code> option will be used by desktop associations with
2654 game or position file types, so that <code>viewerOptions</code> can be
2655 used to configure the exact mode XBoard will start in when it
2656 should act on such a file (e.g. in -ncp mode, or analyzing
2657 with your favorite engine). The options are also automatically
2658 appended when Board is invoked with a single argument not being
2659 an option name, which is then assumed to be the name of a
2660 <code>loadGameFile</code> or (when the name ends in .fen) a
2661 <code>loadPositionFile</code>.
2662 Default: "-ncp -engineOutputUp false -saveSettingsOnExit false".
2663 <br><dt>-tourneyOptions string<dd><a name="index-tourneyOptions_002c-option-554"></a>When XBoard is invoked with a single argument that is a file
2664 with .trn extension, it will assume this argument to be the value
2665 of a <code>tourneyFile</code> option,
2666 and apped the value of the persistent option <code>tourneyOptions</code>
2667 as stored in the settings file to the command line.
2668 Thus the value of <code>tourneyOptions</code> can be
2669 used to configure XBoard to automatically start running a
2670 tournament when it should act on such a file.
2671 Default: "-ncp -mm -saveSettingsOnExit false".
2672 <br><dt>-mode or -initialMode modename<dd><a name="index-mode_002c-option-555"></a><a name="index-initalMode_002c-option-556"></a>If this option is given, XBoard selects the given modename
2673 from the Mode menu after starting and (if applicable) processing the
2674 loadGameFile or loadPositionFile option. Default: "" (no selection).
2675 Other supported values are
2676 MachineWhite, MachineBlack, TwoMachines, Analysis,
2677 AnalyzeFile, EditGame, EditPosition, and Training.
2678 <br><dt>-variant varname<dd><a name="index-variant_002c-option-557"></a>Activates preliminary, partial support for playing chess variants
2679 against a local engine or editing variant games. This flag is not
2680 needed in ICS mode. Recognized variant names are:
2682 <pre class="example"> normal Normal chess
2683 wildcastle Shuffle chess, king can castle from d file
2684 nocastle Shuffle chess, no castling allowed
2685 fischerandom Fischer Random shuffle chess
2686 bughouse Bughouse, ICC/FICS rules
2687 crazyhouse Crazyhouse, ICC/FICS rules
2688 losers Lose all pieces or get mated (ICC wild 17)
2689 suicide Lose all pieces including king (FICS)
2690 giveaway Try to have no legal moves (ICC wild 26)
2691 twokings Weird ICC wild 9
2692 kriegspiel Opponent's pieces are invisible
2693 atomic Capturing piece explodes (ICC wild 27)
2694 3check Win by giving check 3 times (ICC wild 25)
2695 shatranj An ancient precursor of chess (ICC wild 28)
2696 xiangqi Chinese Chess (on a 9x10 board)
2697 shogi Japanese Chess (on a 9x9 board & piece drops)
2698 capablanca Capablanca Chess (10x8 board, with Archbishop
2699 and Chancellor pieces)
2700 gothic similar, with a better initial position
2701 caparandom An FRC-like version of Capablanca Chess (10x8)
2702 janus A game with two Archbishops (10x8 board)
2703 courier Medieval intermediate between shatranj and
2704 modern Chess (on 12x8 board)
2705 falcon Patented 10x8 variant with two Falcon pieces
2706 berolina Pawns capture straight ahead, and move diagonal
2707 cylinder Pieces wrap around the board edge
2708 knightmate King moves as Knight, and vice versa
2709 super Superchess (shuffle variant with 4 exo-pieces)
2710 makruk Thai Chess (shatranj-like, P promotes on 6th rank)
2711 asean ASEAN Chess (a modernized version of Makruk)
2712 spartan Spartan Chess (black has unorthodox pieces)
2713 fairy A catchall variant in which all piece types
2714 known to XBoard can participate (8x8)
2715 unknown Catchall for other unknown variants
2717 <p>NOT ALL BOARDSIZES PROVIDE A COMPLETE SET OF BUILT-IN BITMAPS FOR ALL
2718 UN-ORTHODOX PIECES, though. Only in <code>boardSize</code> middling and bulky
2719 all 22 piece types are provided, while -boardSize petite has most
2720 of them. Archbishop, Chancellor and Amazon are supported in every
2721 size from petite to bulky. Kings or Amazons are substituted for
2722 missing bitmaps. You can still play variants needing un-orthodox
2723 pieces in other board sizes providing your own bitmaps through the
2724 <code>bitmapDirectory</code> or <code>pixmapDirectory</code> options.
2726 <p>In the shuffle variants, XBoard now does shuffle the pieces, although
2727 you can still do it by hand using Edit Position. Some variants are
2728 supported only in ICS mode, including bughouse, and
2729 kriegspiel. The winning/drawing conditions in crazyhouse (off-board
2730 interposition on mate) are not fully understood, but losers, suicide,
2731 giveaway, atomic, and 3check should be OK.
2732 Berolina and cylinder chess can only be played with legality testing off.
2733 In crazyhouse, XBoard now does keep
2734 track of off-board pieces. In shatranj it does implement the baring
2735 rule when mate detection is switched on.
2736 <br><dt>-boardHeight N<dd><a name="index-boardHeight_002c-option-558"></a>Allows you to set a non-standard number of board ranks in any variant.
2737 If the height is given as -1, the default height for the variant is used.
2739 <br><dt>-boardWidth N<dd><a name="index-boardWidth_002c-option-559"></a>Allows you to set a non-standard number of board files in any variant.
2740 If the width is given as -1, the default width for the variant is used.
2741 With a non-standard width, the initial position will always be an empty board,
2742 as the usual opening array will not fit.
2744 <br><dt>-holdingsSize N<dd><a name="index-holdingsSize_002c-option-560"></a>Allows you to set a non-standard size for the holdings in any variant.
2745 If the size is given as -1, the default holdings size for the variant is used.
2746 The first N piece types will go into the holdings on capture, and you will be
2747 able to drop them on the board in stead of making a normal move. If size equals 0,
2748 there will be no holdings.
2750 <br><dt>-defaultFrcPosition N<dd><a name="index-defaultFrcPosition_002c-option-561"></a>Specifies the number of the opening position in shuffle games like Chess960.
2751 A value of -1 means the position is randomly generated by XBoard
2752 at the beginning of every game.
2754 <br><dt>-pieceToCharTable string<dd><a name="index-pieceToCharTable_002c-option-562"></a>The characters that are used to represent the piece types XBoard knows in FEN
2755 diagrams and SAN moves. The string argument has to have an even length
2756 (or it will be ignored), as white and black pieces have to be given separately
2757 (in that order). The last letter for each color will be the King.
2758 The letters before that will be PNBRQ and then a whole host of fairy pieces
2759 in an order that has not fully crystallized yet (currently FEACWMOHIJGDVSLU,
2760 F=Ferz, Elephant, A=Archbishop, C=Chancellor, W=Wazir, M=Commoner, O=Cannon,
2761 H=Nightrider). You should list at least all pieces that occur in the variant
2762 you are playing. If you have less than 44 characters in the string, the pieces
2763 not mentioned will get assigned a period, and you will not be able to distinguish
2764 them in FENs. You can also explicitly assign pieces a period, in which case they
2765 will not be counted in deciding which captured pieces can go into the holdings.
2766 A tilde '~' as a piece name does mean this piece is used to represent a promoted
2767 Pawn in crazyhouse-like games, i.e. on capture it turns back onto a Pawn.
2768 A '+' similarly indicates the piece is a shogi-style promoted piece, that should
2769 revert to its non-promoted version on capture (rather than to a Pawn).
2770 Note that promoted pieces are represented by pieces 11 further in the list.
2771 You should not have to use this option often: each variant has its own default
2772 setting for the piece representation in FEN, which should be sufficient in normal use.
2774 <br><dt>-pieceNickNames string<dd><a name="index-pieceNickNames_002c-option-563"></a>The characters in the string are interpreted the same way as in the
2775 <code>pieceToCharTable</code> option. But on input, piece-ID letters are
2776 first looked up in the nicknames, and only if not defined there,
2777 in the normal pieceToCharTable. This allows you to have two letters
2778 designate the same piece, (e.g. N as an alternative to H for Horse
2779 in Xiangqi), to make reading of non-compliant notations easier.
2781 <br><dt>-colorNickNames string<dd><a name="index-colorNickNames_002c-option-564"></a>The side-to-move field in a FEN will be first matched against the letters
2782 in the string (first character for white, second for black),
2783 before it is matched to the regular 'w' and 'b'.
2784 This makes it easier to read non-compliant FENs,
2785 which, say, use 'r' for white.
2787 <br><dt>-debug/-xdebug or -debugMode true/false<dd><a name="index-debug_002c-option-565"></a><a name="index-debugMode_002c-option-566"></a>Turns on debugging printout.
2788 <br><dt>-debugFile filename or -nameOfDebugFile filename<dd><a name="index-debugFile_002c-option-567"></a><a name="index-nameOfDebugFile_002c-option-568"></a>Sets the name of the file to which XBoard saves debug information
2789 (including all communication to and from the engines).
2790 A <kbd>%d</kbd> in the given file name (e.g. game%d.debug) will be replaced
2791 by the unique sequence number of a tournament game,
2792 so that the debug output of each game will be written on a separate file.
2793 <br><dt>-engineDebugOutput number<dd><a name="index-engineDebugOutput_002c-option-569"></a>Specifies how XBoard should handle unsolicited output from the engine,
2794 with respect to saving it in the debug file.
2795 The output is further (hopefully) ignored.
2796 If number=0, XBoard refrains from writing such spurious output to the debug file.
2797 If number=1, all engine output is written faithfully to the debug file.
2798 If number=2, any protocol-violating line is prefixed with a '#' character,
2799 as the engine itself should have done if it wanted to submit info for inclusion in the debug file.
2800 This option is provided for the benefit of applications that use the debug file
2801 as a source of information, such as the broadcaster of live games TLCV / TLCS.
2802 Such applications can be protected from spurious engine output that might otherwise confuse them.
2803 <br><dt>-rsh or -remoteShell shell-name<dd><a name="index-rsh_002c-option-570"></a><a name="index-remoteShell_002c-option-571"></a>Name of the command used to run programs remotely. The default
2804 is <samp><span class="file">rsh</span></samp> or <samp><span class="file">remsh</span></samp>, determined when XBoard is
2805 configured and compiled.
2806 <br><dt>-ruser or -remoteUser user-name<dd><a name="index-ruser_002c-option-572"></a><a name="index-remoteUser_002c-option-573"></a>User name on the remote system when running programs with the
2807 <code>remoteShell</code>. The default is your local user name.
2808 <br><dt>-userName username<dd><a name="index-userName_002c-option-574"></a>Name under which the Human player will be listed in the PGN file.
2809 Default is the login name on your local computer.
2810 <br><dt>-delayBeforeQuit number<dt>-delayAfterQuit number<dd><a name="index-delayBeforeQuit_002c-option-575"></a><a name="index-delayAfterQuit_002c-option-576"></a>These options order pauses before and after sending the "quit" command to an engine that must be terminated.
2811 The pause between quit and the previous command is specified in milliseconds.
2812 The pause after quit is used to schedule a kill signal to be sent to the engine process after the
2813 number of specified seconds plus one.
2814 This signal is a different one as the terminiation signal described in the protocol specs
2815 which engines can suppress or ignore, and which is sent directly after the "quit" command.
2816 Setting <code>delayAfterQuit</code> to -1 will suppress sending of the kill signal.
2818 <br><dt>-searchMode n<dd><a name="index-searchMode_002c-option-577"></a>The integer n encodes the mode for the ‘<samp><span class="samp">find position</span></samp>’ function.
2819 Default: 1 (= Exact position match)
2820 <br><dt>-eloThresholdBoth elo<dt>-eloThresholdAny elo<dd><a name="index-eloThresholdBoth_002c-option-578"></a><a name="index-eloThresholdAny_002c-option-579"></a>Defines a lower limit for the Elo rating, which has to be surpassed
2821 before a game will be considered when searching for a board position.
2823 <br><dt>-dateThreshold year<dd><a name="index-dateThreshold_002c-option-580"></a>Only games not played before the given year will be considered when
2824 searching for a board position
2829 <a name="Chess-Servers"></a>
2831 Next: <a rel="next" accesskey="n" href="#Firewalls">Firewalls</a>,
2832 Previous: <a rel="previous" accesskey="p" href="#Options">Options</a>,
2833 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2837 <h2 class="chapter">5 Chess Servers</h2>
2839 <p><a name="index-ICS-581"></a><a name="index-ICS_002c-addresses-582"></a><a name="index-Internet-Chess-Server-583"></a>An <dfn>Internet Chess Server</dfn>, or <dfn>ICS</dfn>, is a place on the
2840 Internet where people can get together to play chess, watch other
2841 people's games, or just chat. You can use either <code>telnet</code> or a
2842 client program like XBoard to connect to the server. There are
2843 thousands of registered users on the different ICS hosts, and it is
2844 not unusual to meet 200 on both chessclub.com and freechess.org.
2846 <p>Most people can just type <kbd>xboard -ics</kbd> to start XBoard as an ICS
2847 client. Invoking XBoard in this way connects you to the Internet
2848 Chess Club (ICC), a commercial ICS. You can log in there as a guest
2849 even if you do not have a paid account. To connect to the largest
2850 Free ICS (FICS), use the command <kbd>xboard -ics -icshost freechess.org</kbd>
2851 instead, or substitute a different host name to connect to your
2853 For a full description of command-line options that control
2854 the connection to ICS and change the default values of ICS options, see
2855 <a href="#ICS-options">ICS options</a>.
2857 <p>While you are running XBoard as an ICS client,
2858 you use the terminal window that you started XBoard from
2859 as a place to type in commands and read information that is
2860 not available on the chessboard.
2862 <p>The first time you need to use the terminal is to enter your login name
2863 and password, if you are a registered player. (You don't need to do
2864 this manually; the <code>icsLogon</code> option can do it for you.
2865 see <a href="#ICS-options">ICS options</a>.) If you are not registered,
2866 enter <kbd>g</kbd> as your name, and the server will pick a
2867 unique guest name for you.
2869 <p>Some useful ICS commands
2872 <dt><kbd>help <topic></kbd><dd><a name="index-help_002c-ICS-command-584"></a>to get help on the given <topic>. To get a list of possible topics type
2873 <dfn>help</dfn> without topic. Try the help command before you ask other
2874 people on the server for help.
2876 <p>For example <kbd>help register</kbd> tells you how to become a registered
2878 <br><dt><kbd>who <flags></kbd><dd><a name="index-who_002c-ICS-command-585"></a>to see a list of people who are logged on. Administrators
2879 (people you should talk to if you have a problem) are marked
2880 with the character ‘<samp><span class="samp">*</span></samp>’, an asterisk. The <flags> allow you to
2881 display only selected players: For example, <kbd>who of</kbd> shows a
2882 list of players who are interested in playing but do not have
2884 <br><dt><kbd>games</kbd><dd><a name="index-games_002c-ICS-command-586"></a>to see what games are being played
2885 <br><dt><kbd>match <player> [<mins>] [<inc>]</kbd><dd>to challenge another player to a game. Both opponents get <mins> minutes
2886 for the game, and <inc> seconds will be added after each move.
2887 If another player challenges you, the server asks if you want to
2888 accept the challenge; use the <kbd>accept</kbd> or <kbd>decline</kbd> commands
2890 <br><dt><kbd>accept</kbd><dt><kbd>decline</kbd><dd><a name="index-accept_002c-ICS-command-587"></a><a name="index-decline_002c-ICS-command-588"></a>to accept or decline another player's offer.
2891 The offer may be to start a new game, or to agree to a
2892 <kbd>draw</kbd>, <kbd>adjourn</kbd> or <kbd>abort</kbd> the current game. See <a href="#Action-Menu">Action Menu</a>.
2894 <p>If you have more than one pending offer (for example, if more than one player
2895 is challenging you, or if your opponent offers both a draw and to adjourn the
2896 game), you have to supply additional information, by typing something
2897 like <kbd>accept <player></kbd>, <kbd>accept draw</kbd>, or <kbd>draw</kbd>.
2898 <br><dt><kbd>draw</kbd><dt><kbd>adjourn</kbd><dt><kbd>abort</kbd><dd><a name="index-draw_002c-ICS-command-589"></a><a name="index-adjourn_002c-ICS-command-590"></a><a name="index-abort_002c-ICS-command-591"></a>asks your opponent to terminate a game by mutual agreement. Adjourned
2899 games can be continued later.
2900 Your opponent can either <kbd>decline</kbd> your offer or accept it (by typing the
2901 same command or typing <kbd>accept</kbd>). In some cases these commands work
2902 immediately, without asking your opponent to agree. For example, you can
2903 abort the game unilaterally if your opponent is out of time, and you can claim
2904 a draw by repetition or the 50-move rule if available simply by typing
2906 <br><dt><kbd>finger <player></kbd><dd><a name="index-finger_002c-ICS-command-592"></a>to get information about the given <player>. (Default: yourself.)
2907 <br><dt><kbd>vars</kbd><dd><a name="index-vars_002c-ICS-command-593"></a>to get a list of personal settings
2908 <br><dt><kbd>set <var> <value></kbd><dd><a name="index-set_002c-ICS-command-594"></a>to modify these settings
2909 <br><dt><kbd>observe <player></kbd><dd><a name="index-observe_002c-ICS-command-595"></a>to observe an ongoing game of the given <player>.
2910 <br><dt><kbd>examine</kbd><dt><kbd>oldmoves</kbd><dd><a name="index-examine_002c-ICS-command-596"></a><a name="index-oldmoves_002c-ICS-command-597"></a>to review a recently completed game
2913 <p>Some special XBoard features are activated when you are
2914 in examine mode on ICS. See the descriptions of the menu commands
2915 ‘<samp><span class="samp">Forward</span></samp>’, ‘<samp><span class="samp">Backward</span></samp>’, ‘<samp><span class="samp">Pause</span></samp>’, ‘<samp><span class="samp">ICS Client</span></samp>’,
2916 and ‘<samp><span class="samp">Stop Examining</span></samp>’ on the <a href="#Edit-Menu">Edit Menu</a>, <a href="#Mode-Menu">Mode Menu</a>, and
2917 <a href="#Action-Menu">Action Menu</a>.
2920 <a name="Firewalls"></a>
2922 Next: <a rel="next" accesskey="n" href="#Environment">Environment</a>,
2923 Previous: <a rel="previous" accesskey="p" href="#Chess-Servers">Chess Servers</a>,
2924 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2928 <h2 class="chapter">6 Firewalls</h2>
2930 <p>By default, XBoard communicates with an Internet Chess Server
2931 by opening a TCP socket directly from the machine it is running on
2932 to the ICS. If there is a firewall between your machine and the ICS,
2933 this won't work. Here are some recipes for getting around common
2934 kinds of firewalls using special options to XBoard.
2935 Important: See the paragraph in the below about extra echoes, in
2936 <a href="#Limitations">Limitations</a>.
2938 <p>Suppose that you can't telnet directly to ICS, but you can telnet
2939 to a firewall host, log in, and then telnet from there to ICS.
2940 Let's say the firewall is called ‘<samp><span class="samp">firewall.example.com</span></samp>’. Set
2941 command-line options as follows:
2943 <pre class="example"> xboard -ics -icshost firewall.example.com -icsport 23
2945 <p class="noindent">Then when you run XBoard in ICS mode, you will be prompted
2946 to log in to the firewall host. This works because port 23 is the
2947 standard telnet login service. Do so, then telnet to ICS, using a
2948 command like ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’, or whatever command
2949 the firewall provides for telnetting to port 5000.
2951 <p>If your firewall lets you telnet (or rlogin) to remote hosts but
2952 doesn't let you telnet to port 5000, you may be able to connect to the
2953 chess server on port 23 instead, which is the port the telnet program
2954 uses by default. Some chess servers support this (including
2955 chessclub.com and freechess.org), while some do not.
2957 <p>If your chess server does not allow connections on port 23 and your
2958 firewall does not allow you to connect to other ports, you may be able
2959 to connect by hopping through another host outside the firewall that
2960 you have an account on. For instance, suppose you have a shell
2961 account at ‘<samp><span class="samp">foo.edu</span></samp>’. Follow the recipe above, but instead of
2962 typing ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’ to the firewall, type
2963 ‘<samp><span class="samp">telnet foo.edu</span></samp>’ (or ‘<samp><span class="samp">rlogin foo.edu</span></samp>’), log in there, and
2964 then type ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’.
2966 <p>Suppose that you can't telnet directly to ICS, but you can use rsh
2967 to run programs on a firewall host, and that host can telnet to ICS.
2968 Let's say the firewall is called ‘<samp><span class="samp">rsh.example.com</span></samp>’. Set
2969 command-line options as follows:
2971 <pre class="example"> xboard -ics -gateway rsh.example.com -icshost chessclub.com
2973 <p class="noindent">Then when you run XBoard in ICS mode, it will connect to
2974 the ICS by using <samp><span class="file">rsh</span></samp> to run the command
2975 ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’ on host ‘<samp><span class="samp">rsh.example.com</span></samp>’.
2977 <p>Suppose that you can telnet anywhere you want, but you have to
2978 run a special program called <samp><span class="file">ptelnet</span></samp> to do so.
2980 <p>First, we'll consider the easy case, in which
2981 ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ gets you to the chess server.
2982 In this case set command line options as follows:
2984 <pre class="example"> xboard -ics -telnet -telnetProgram ptelnet
2986 <p class="noindent">Then when you run XBoard in ICS mode, it will issue the
2987 command ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ to connect to the ICS.
2989 <p>Next, suppose that ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ doesn't work;
2990 that is, your <samp><span class="file">ptelnet</span></samp> program doesn't let you connect to
2991 alternative ports. As noted above, your chess server may allow you to
2992 connect on port 23 instead. In that case, just add the option
2993 ‘<samp><span class="samp">-icsport ""</span></samp>’ to the above command.
2994 But if your chess server doesn't let you connect on port 23, you will have
2995 to find some other host outside the firewall and hop through it. For
2996 instance, suppose you have a shell account at ‘<samp><span class="samp">foo.edu</span></samp>’. Set
2997 command line options as follows:
2999 <pre class="example"> xboard -ics -telnet -telnetProgram ptelnet -icshost foo.edu -icsport ""
3001 <p class="noindent">Then when you run XBoard in ICS mode, it will issue the
3002 command ‘<samp><span class="samp">ptelnet foo.edu</span></samp>’ to connect to your account at
3003 ‘<samp><span class="samp">foo.edu</span></samp>’. Log in there, then type ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’.
3005 <p>ICC timestamp and FICS timeseal do not work through some
3006 firewalls. You can use them only if your firewall gives a clean TCP
3007 connection with a full 8-bit wide path. If your firewall allows you
3008 to get out only by running a special telnet program, you can't use
3009 timestamp or timeseal across it. But if you have access to a
3010 computer just outside your firewall, and you have much lower netlag
3011 when talking to that computer than to the ICS, it might be worthwhile
3012 running timestamp there. Follow the instructions above for hopping
3013 through a host outside the firewall (foo.edu in the example),
3014 but run timestamp or timeseal on that host instead of telnet.
3016 <p>Suppose that you have a SOCKS firewall that will give you a clean
3017 8-bit wide TCP connection to the chess server, but only after you
3018 authenticate yourself via the SOCKS protocol. In that case, you could
3019 make a socksified version of XBoard and run that. If you are using
3020 timestamp or timeseal, you will to socksify it, not XBoard; this may
3021 be difficult seeing that ICC and FICS do not provide source code for
3022 these programs. Socksification is beyond the scope of this document,
3023 but see the SOCKS Web site at http://www.socks.permeo.com/.
3024 If you are missing SOCKS, try http://www.funbureau.com/.
3027 <a name="Environment"></a>
3029 Next: <a rel="next" accesskey="n" href="#Limitations">Limitations</a>,
3030 Previous: <a rel="previous" accesskey="p" href="#Firewalls">Firewalls</a>,
3031 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3035 <h2 class="chapter">7 Environment variables</h2>
3037 <p><a name="index-Environment-variables-598"></a><a name="index-CHESSDIR-599"></a>Game and position files are found in a directory named by the
3038 <code>CHESSDIR</code> environment variable. If this variable is not set, the
3039 current working directory is used. If <code>CHESSDIR</code> is set,
3040 XBoard actually changes its working directory to
3041 <code>$CHESSDIR</code>, so any files written by the chess engine
3042 will be placed there too.
3045 <a name="Limitations"></a>
3047 Next: <a rel="next" accesskey="n" href="#Problems">Problems</a>,
3048 Previous: <a rel="previous" accesskey="p" href="#Environment">Environment</a>,
3049 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3053 <h2 class="chapter">8 Limitations and known bugs</h2>
3055 <p><a name="index-Limitations-600"></a><a name="index-Bugs-601"></a>There is no way for two people running copies of XBoard to play
3056 each other without going through an Internet Chess Server.
3058 <p>Under some circumstances, your ICS password may be echoed when you log on.
3060 <p>If you are connecting to the ICS by running telnet on an Internet
3061 provider or firewall host, you may find that each line you type is
3062 echoed back an extra time after you hit <Enter>. If your Internet
3063 provider is a Unix system, you can probably turn its echo off by
3064 typing <kbd>stty -echo</kbd> after you log in, and/or typing
3065 <^E><Enter> (Ctrl+E followed by the Enter key) to the telnet
3066 program after you have logged into ICS. It is a good idea to do this
3067 if you can, because the extra echo can occasionally confuse XBoard's
3070 <p>The game parser recognizes only algebraic notation.
3072 <p>Many of the following points used to be limitations in XBoard 4.2.7 and earlier,
3074 The internal move legality tester in XBoard 4.3.xx does look at the game history,
3075 and is fully aware of castling or en-passant-capture rights. It permits castling with
3076 the king on the d file because this is possible in some "wild 1" games on ICS.
3077 The piece-drop menu does not check piece drops in bughouse to see if you actually hold
3078 the piece you are trying to drop. But this way of dropping pieces should be considered
3079 an obsolete feature, now that pieces can be dropped by dragging them from the holdings
3080 to the board. Anyway, if you would attempt an illegal move when using a chess engine or the ICS,
3081 XBoard will accept the error message that comes back, undo the move, and let you try another.
3082 FEN positions saved by XBoard do include correct information about whether castling or
3083 en passant are legal, and also handle the 50-move counter.
3084 The mate detector does not understand that non-contact mate is not really mate in bughouse.
3085 The only problem this causes while playing is minor: a "#" (mate indicator) character will
3086 show up after a non-contact mating move in the move list. XBoard will not assume the game
3087 is over at that point, not even when the option Detect Mates is on.
3088 Edit Game mode always uses the rules of the selected variant,
3089 which can be a variant that uses piece drops.
3090 You can load and edit games that contain piece drops.
3091 The (obsolete) piece menus are not active,
3092 but you can perform piece drops by dragging pieces from the holdings.
3093 Fischer Random castling is fully understood.
3094 You can enter castlings by dragging the King on top of your Rook.
3095 You can probably also play Fischer Random successfully on ICS by typing
3096 castling moves into the ICS Interaction window.
3098 <p>The menus may not work if your keyboard is in Caps Lock or Num Lock mode.
3099 This seems to be a problem with the Athena menu widget,
3102 <p>Also see the ToDo file included with the distribution for many other
3103 possible bugs, limitations, and ideas for improvement that have been
3106 <a name="Problems"></a>
3108 Next: <a rel="next" accesskey="n" href="#Contributors">Contributors</a>,
3109 Previous: <a rel="previous" accesskey="p" href="#Limitations">Limitations</a>,
3110 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3114 <h2 class="chapter">9 Reporting problems</h2>
3116 <p><a name="index-Bugs-602"></a><a name="index-Bug-reports-603"></a><a name="index-Reporting-bugs-604"></a><a name="index-Problems-605"></a><a name="index-Reporting-problems-606"></a>
3117 You can report bugs and problems with XBoard using
3118 the bug tracker at <code>https://savannah.gnu.org/projects/xboard/</code>
3119 or by sending mail to <code><bug-xboard@gnu.org></code>. It can also
3120 be useful to report or discuss bugs in the WinBoard Forum at
3121 <code>http://www.open-aurec.com/wbforum/</code>,
3122 WinBoard development section.
3124 <p>Please use the <samp><span class="file">script</span></samp> program to start a typescript, run
3125 XBoard with the ‘<samp><span class="samp">-debug</span></samp>’ option, and include the typescript
3126 output in your message.
3127 Also tell us what kind of machine and what operating system version
3128 you are using. The command ‘<samp><span class="samp">uname -a</span></samp>’ will often tell you this.
3130 <p>If you improve XBoard, please send a message about your changes,
3131 and we will get in touch with you about merging them in
3132 to the main line of development.
3135 <a name="Contributors"></a>
3137 Next: <a rel="next" accesskey="n" href="#CMail">CMail</a>,
3138 Previous: <a rel="previous" accesskey="p" href="#Problems">Problems</a>,
3139 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3143 <h2 class="chapter">10 Authors and contributors</h2>
3145 <p><a name="index-Authors-607"></a><a name="index-Contributors-608"></a>
3146 Chris Sears and Dan Sears wrote the original XBoard. They were
3147 responsible for versions 1.0 through 1.2. The color scheme was taken
3148 from Wayne Christopher's <code>XChess</code> program.
3150 <p>Tim Mann was primarily responsible for XBoard versions 1.3 through
3151 4.2.7, and for WinBoard (a port of XBoard to Microsoft Win32) from its
3152 inception through version 4.2.7.
3154 <p>John Chanak contributed the initial implementation of ICS mode. Evan
3155 Welsh wrote <code>CMail</code>, and Patrick Surry helped in designing,
3156 testing, and documenting it. Elmar Bartel contributed the new piece
3157 bitmaps introduced in version 3.2. Jochen Wiedmann converted the
3158 documentation to texinfo. Frank McIngvale added click/click moving,
3159 the Analysis modes, piece flashing, ZIICS import, and ICS text
3160 colorization to XBoard. Hugh Fisher added animated piece movement to
3161 XBoard, and Henrik Gram added it to WinBoard. Mark Williams
3162 contributed the initial (WinBoard-only) implementation of many new
3163 features added to both XBoard and WinBoard in version 4.1.0, including
3164 copy/paste, premove, icsAlarm, autoFlipView, training mode, auto
3165 raise, and blindfold. Ben Nye contributed X copy/paste code for
3168 <p>In a fork from version 4.2.7, Alessandro Scotti added many elements to
3169 the user interface of WinBoard, including the board textures and
3170 font-based rendering, the evaluation-graph, move-history and
3171 engine-output window. He was also responsible for adding the UCI
3174 <p>H. G. Muller continued this fork of the project, producing version
3175 4.3. He made WinBoard castling- and e.p.-aware, added variant support
3176 with adjustable board sizes, the crazyhouse holdings, and the fairy
3177 pieces. In addition he added most of the adjudication options, made
3178 WinBoard more robust in dealing with buggy and crashing engines, and
3179 extended time control with a time-odds and node-count-based modes.
3180 Most of the options that initially were WinBoard only have now been
3181 back-ported to XBoard.
3183 <p>Michel van den Bergh provided the code for reading Polyglot opening books.
3185 <p>Meanwhile, some work continued on the GNU XBoard project maintained at
3186 savannah.gnu.org, but version 4.2.8 was never released. Daniel
3187 Mehrmann was responsible for much of this work.
3189 <p>Most recently, Arun Persaud worked with H. G. Muller to merge all
3190 the features of the never-released XBoard/WinBoard 4.2.8 of the GNU
3191 XBoard project and the never-released 4.3.16 from H. G.'s fork into a
3192 unified XBoard/WinBoard 4.4, which is now available both from the
3193 savannah.gnu.org web site and the WinBoard forum.
3196 <a name="CMail"></a>
3198 Next: <a rel="next" accesskey="n" href="#Other-programs">Other programs</a>,
3199 Previous: <a rel="previous" accesskey="p" href="#Contributors">Contributors</a>,
3200 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3204 <h2 class="chapter">11 CMail</h2>
3206 <p><a name="index-cmail-609"></a>The <samp><span class="file">cmail</span></samp> program can help you play chess by email with opponents of
3207 your choice using XBoard as an interface.
3209 <p>You will usually run <samp><span class="file">cmail</span></samp> without giving any options.
3212 <li><a accesskey="1" href="#CMail-options">CMail options</a>: Invoking CMail.
3213 <li><a accesskey="2" href="#CMail-game">CMail game</a>: Starting a CMail game.
3214 <li><a accesskey="3" href="#CMail-answer">CMail answer</a>: Answering a move.
3215 <li><a accesskey="4" href="#CMail-multi">CMail multi</a>: Multiple games in one message.
3216 <li><a accesskey="5" href="#CMail-completion">CMail completion</a>: Completing a game.
3217 <li><a accesskey="6" href="#CMail-trouble">CMail trouble</a>: Known CMail problems.
3221 <a name="CMail-options"></a>
3223 Next: <a rel="next" accesskey="n" href="#CMail-game">CMail game</a>,
3224 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3228 <h3 class="section">11.1 CMail options</h3>
3231 <dt>-h<dd>Displays <samp><span class="file">cmail</span></samp> usage information.
3232 <br><dt>-c<dd>Shows the conditions of the GNU General Public License.
3233 See <a href="#Copying">Copying</a>.
3234 <br><dt>-w<dd>Shows the warranty notice of the GNU General Public License.
3235 See <a href="#Copying">Copying</a>.
3236 <br><dt>-v<dt>-xv<dd>Provides or inhibits verbose output from <samp><span class="file">cmail</span></samp> and XBoard,
3237 useful for debugging. The
3239 form also inhibits the cmail introduction message.
3240 <br><dt>-mail<dt>-xmail<dd>Invokes or inhibits the sending of a mail message containing the move.
3241 <br><dt>-xboard<dt>-xxboard<dd>Invokes or inhibits the running of XBoard on the game file.
3242 <br><dt>-reuse<dt>-xreuse<dd>Invokes or inhibits the reuse of an existing XBoard to display the
3244 <br><dt>-remail<dd>Resends the last mail message for that game. This inhibits running
3246 <br><dt>-game <name><dd>The name of the game to be processed.
3247 <br><dt>-wgames <number><dt>-bgames <number><dt>-games <number><dd>Number of games to start as White, as Black or in total. Default is 1 as
3248 white and none as black. If only one color is specified then none of the
3249 other color is assumed. If no color is specified then equal numbers of
3250 White and Black games are started, with the extra game being as White if an
3251 odd number of total games is specified.
3252 <br><dt>-me <short name><dt>-opp <short name><dd>A one-word alias for yourself or your opponent.
3253 <br><dt>-wname <full name><dt>-bname <full name><dt>-myname <full name><dt>-oppname <full name><dd>The full name of White, Black, yourself or your opponent.
3254 <br><dt>-wna <net address><dt>-bna <net address><dt>-na <net address><dt>-oppna <net address><dd>The email address of White, Black, yourself or your opponent.
3255 <br><dt>-dir <directory><dd>The directory in which <samp><span class="file">cmail</span></samp> keeps its files. This defaults to the
3256 environment variable <code>$CMAIL_DIR</code> or failing that, <code>$CHESSDIR</code>,
3257 <samp><span class="file">$HOME/Chess</span></samp> or <samp><span class="file">~/Chess</span></samp>. It will be created if it does not exist.
3258 <br><dt>-arcdir <directory><dd>The directory in which <samp><span class="file">cmail</span></samp> archives completed games. Defaults to
3259 the environment variable <code>$CMAIL_ARCDIR</code> or, in its absence, the same
3260 directory as cmail keeps its working files (above).
3261 <br><dt>-mailprog <mail program><dd>The program used by cmail to send email messages. This defaults to the
3262 environment variable <code>$CMAIL_MAILPROG</code> or failing that
3263 <samp><span class="file">/usr/ucb/Mail</span></samp>, <samp><span class="file">/usr/ucb/mail</span></samp> or <samp><span class="file">Mail</span></samp>. You will need
3264 to set this variable if none of the above paths fit your system.
3265 <br><dt>-logFile <file><dd>A file in which to dump verbose debugging messages that are invoked with
3266 the ‘<samp><span class="samp">-v</span></samp>’
3268 <br><dt>-event <event><dd>The PGN Event tag (default ‘<samp><span class="samp">Email correspondence game</span></samp>’).
3269 <br><dt>-site <site><dd>The PGN Site tag (default ‘<samp><span class="samp">NET</span></samp>’).
3270 <br><dt>-round <round><dd>The PGN Round tag (default ‘<samp><span class="samp">-</span></samp>’, not applicable).
3271 <br><dt>-mode <mode><dd>The PGN Mode tag (default ‘<samp><span class="samp">EM</span></samp>’, Electronic Mail).
3272 <br><dt>Other options<dd>Any option flags not listed above are passed through to XBoard.
3273 Invoking XBoard through CMail changes the default values of two XBoard
3274 options: The default value for ‘<samp><span class="samp">-noChessProgram</span></samp>’ is changed to
3275 true; that is, by default no chess engine is started. The default
3276 value for ‘<samp><span class="samp">-timeDelay</span></samp>’ is changed to 0; that is, by default
3277 XBoard immediately goes to the end of the game as played so far,
3278 rather than stepping through the moves one by one. You can still set
3279 these options to whatever values you prefer by supplying them on
3280 CMail's command line. See <a href="#Options">Options</a>.
3284 <a name="CMail-game"></a>
3286 Next: <a rel="next" accesskey="n" href="#CMail-answer">CMail answer</a>,
3287 Previous: <a rel="previous" accesskey="p" href="#CMail-options">CMail options</a>,
3288 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3292 <h3 class="section">11.2 Starting a CMail Game</h3>
3294 <p>Type <samp><span class="file">cmail</span></samp> from a shell to start a game as white. After an opening
3295 message, you will be prompted for a game name, which is optional—if you
3296 simply press <Enter>, the game name will take the form
3297 ‘<samp><span class="samp">you-VS-opponent</span></samp>’. You will next be prompted for the short name
3298 of your opponent. If you haven't played this person before, you will also
3299 be prompted for his/her email address. <samp><span class="file">cmail</span></samp> will then invoke
3300 XBoard in the background. Make your first move and select
3301 ‘<samp><span class="samp">Mail Move</span></samp>’ from the ‘<samp><span class="samp">File</span></samp>’ menu. See <a href="#File-Menu">File Menu</a>. If all is well,
3302 <samp><span class="file">cmail</span></samp> will mail a copy of the move to your opponent. If you select
3303 ‘<samp><span class="samp">Exit</span></samp>’ without having selected ‘<samp><span class="samp">Mail Move</span></samp>’ then no move will be
3307 <a name="CMail-answer"></a>
3309 Next: <a rel="next" accesskey="n" href="#CMail-multi">CMail multi</a>,
3310 Previous: <a rel="previous" accesskey="p" href="#CMail-game">CMail game</a>,
3311 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3315 <h3 class="section">11.3 Answering a Move</h3>
3317 <p>When you receive a message from an opponent containing a move in one of
3318 your games, simply pipe the message through <samp><span class="file">cmail</span></samp>. In some mailers
3319 this is as simple as typing <kbd>| cmail</kbd> when viewing the message, while in
3320 others you may have to save the message to a file and do <kbd>cmail < file</kbd>
3321 at the command line. In either case <samp><span class="file">cmail</span></samp> will display the game using
3322 XBoard. If you didn't exit XBoard when you made your first move
3323 then <samp><span class="file">cmail</span></samp> will do its best to use the existing XBoard instead
3324 of starting a new one. As before, simply make a move and select
3325 ‘<samp><span class="samp">Mail Move</span></samp>’ from the ‘<samp><span class="samp">File</span></samp>’ menu. See <a href="#File-Menu">File Menu</a>. <samp><span class="file">cmail</span></samp>
3327 XBoard that was most recently used to display the current game. This
3328 means that many games can be in progress simultaneously, each with its own
3331 <p>If you want to look at the history or explore a variation, go ahead, but
3332 you must return to the current position before XBoard will allow you
3333 to mail a move. If you edit the game's history you must select
3334 ‘<samp><span class="samp">Reload Same Game</span></samp>’ from the ‘<samp><span class="samp">File</span></samp>’ menu to get back to the original
3335 position, then make the move you want and select ‘<samp><span class="samp">Mail Move</span></samp>’.
3336 As before, if you decide you aren't ready to make a move just yet you can
3337 either select ‘<samp><span class="samp">Exit</span></samp>’ without sending a move or just leave
3338 XBoard running until you are ready.
3341 <a name="CMail-multi"></a>
3343 Next: <a rel="next" accesskey="n" href="#CMail-completion">CMail completion</a>,
3344 Previous: <a rel="previous" accesskey="p" href="#CMail-answer">CMail answer</a>,
3345 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3349 <h3 class="section">11.4 Multi-Game Messages</h3>
3351 <p>It is possible to have a <samp><span class="file">cmail</span></samp> message carry more than one game.
3352 This feature was implemented to handle IECG (International Email Chess
3353 Group) matches, where a match consists of one game as white and one as black,
3354 with moves transmitted simultaneously. In case there are more general uses,
3355 <samp><span class="file">cmail</span></samp> itself places no limit on the number of black/white games
3356 contained in a message; however, XBoard does.
3359 <a name="CMail-completion"></a>
3361 Next: <a rel="next" accesskey="n" href="#CMail-trouble">CMail trouble</a>,
3362 Previous: <a rel="previous" accesskey="p" href="#CMail-multi">CMail multi</a>,
3363 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3367 <h3 class="section">11.5 Completing a Game</h3>
3369 <p>Because XBoard can detect checkmate and stalemate, <samp><span class="file">cmail</span></samp>
3370 handles game termination sensibly. As well as resignation, the
3371 ‘<samp><span class="samp">Action</span></samp>’ menu allows draws to be offered and accepted for
3372 <samp><span class="file">cmail</span></samp> games.
3374 <p>For multi-game messages, only unfinished and just-finished games will be
3375 included in email messages. When all the games are finished, they are
3376 archived in the user's archive directory, and similarly in the opponent's
3377 when he or she pipes the final message through <samp><span class="file">cmail</span></samp>. The archive
3378 file name includes the date the game was started.
3381 <a name="CMail-trouble"></a>
3383 Previous: <a rel="previous" accesskey="p" href="#CMail-completion">CMail completion</a>,
3384 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3388 <h3 class="section">11.6 Known CMail Problems</h3>
3390 <p>It's possible that a strange conjunction of conditions may occasionally
3391 mean that <samp><span class="file">cmail</span></samp> has trouble reactivating an existing
3392 XBoard. If this should happen, simply trying it again should work.
3393 If not, remove the file that stores the XBoard's PID
3394 (<samp><span class="file">game.pid</span></samp>) or use the ‘<samp><span class="samp">-xreuse</span></samp>’ option to force
3395 <samp><span class="file">cmail</span></samp> to start a new XBoard.
3397 <p>Versions of <samp><span class="file">cmail</span></samp> after 2.16 no longer understand the old file format
3398 that XBoard used to use and so cannot be used to correspond with
3399 anyone using an older version.
3401 <p>Versions of <samp><span class="file">cmail</span></samp> older than 2.11 do not handle multi-game messages,
3402 so multi-game correspondence is not possible with opponents using an older
3406 <a name="Other-programs"></a>
3408 Next: <a rel="next" accesskey="n" href="#Copyright">Copyright</a>,
3409 Previous: <a rel="previous" accesskey="p" href="#CMail">CMail</a>,
3410 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3414 <h2 class="chapter">12 Other programs you can use with XBoard</h2>
3416 <p><a name="index-Other-programs-610"></a>
3417 Here are some other programs you can use with XBoard
3420 <li><a accesskey="1" href="#GNU-Chess">GNU Chess</a>: The GNU Chess engine.
3421 <li><a accesskey="2" href="#Fairy_002dMax">Fairy-Max</a>: The Fairy-Max chess engine.
3422 <li><a accesskey="3" href="#HoiChess">HoiChess</a>: The HoiChess chess engine.
3423 <li><a accesskey="4" href="#Crafty">Crafty</a>: The Crafty chess engine.
3427 <a name="GNU-Chess"></a>
3429 Next: <a rel="next" accesskey="n" href="#Fairy_002dMax">Fairy-Max</a>,
3430 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3434 <h3 class="section">12.1 GNU Chess</h3>
3436 <p>The GNU Chess engine is available from:
3438 <p>ftp://ftp.gnu.org/gnu/gnuchess/
3440 <p>You can use XBoard to play a game against GNU Chess, or to
3441 interface GNU Chess to an ICS.
3444 <a name="Fairy-Max"></a>
3445 <a name="Fairy_002dMax"></a>
3447 Next: <a rel="next" accesskey="n" href="#HoiChess">HoiChess</a>,
3448 Previous: <a rel="previous" accesskey="p" href="#GNU-Chess">GNU Chess</a>,
3449 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3453 <h3 class="section">12.2 Fairy-Max</h3>
3455 <p>Fairy-Max is a derivative from the once World's smallest Chess program micro-Max,
3456 which measures only about 100 lines of source code.
3457 The main difference with micro-Max is that Fairy-Max loads its move-generator
3458 tables from a file, so that the rules for piece movement can be easily configured
3459 to implement unorthodox pieces.
3460 Fairy-Max can therefore play a large number of variants, normal Chess being one of those.
3461 In addition it plays Knightmate, Capablanca and Gothic Chess, Shatranj, Courier Chess,
3462 Cylinder chess, Berolina Chess, while the user can easily define new variants.
3463 It can be obtained from:
3465 <p>http://home.hccnet.nl/h.g.muller/dwnldpage.html
3468 <a name="HoiChess"></a>
3470 Next: <a rel="next" accesskey="n" href="#Crafty">Crafty</a>,
3471 Previous: <a rel="previous" accesskey="p" href="#Fairy_002dMax">Fairy-Max</a>,
3472 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3476 <h3 class="section">12.3 HoiChess</h3>
3478 <p>HoiChess is a not-so-very-strong Chess engine, which comes with a derivative HoiXiangqi,
3479 able to play Chinese Chess. It can be obtained from the standard Linux repositories
3482 <p>sudo apt-get install hoichess
3485 <a name="Crafty"></a>
3487 Previous: <a rel="previous" accesskey="p" href="#HoiChess">HoiChess</a>,
3488 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3492 <h3 class="section">12.4 Crafty</h3>
3494 <p>Crafty is a chess engine written by Bob Hyatt.
3495 You can use XBoard to play a game against Crafty, hook Crafty up
3496 to an ICS, or use Crafty to interactively analyze games and positions
3499 <p>Crafty is a strong, rapidly evolving chess program. This rapid
3500 pace of development is good, because it means Crafty is always
3501 getting better. This can sometimes cause problems with
3502 backwards compatibility, but usually the latest version of Crafty
3503 will work well with the latest version of XBoard.
3504 Crafty can be obtained from its author's FTP site:
3505 ftp://ftp.cis.uab.edu/hyatt/.
3507 <p>To use Crafty with XBoard, give the -fcp and -fd options as follows, where
3508 <crafty's directory> is the directory in which you installed Crafty
3509 and placed its book and other support files.
3512 <a name="Copyright"></a>
3514 Next: <a rel="next" accesskey="n" href="#Copying">Copying</a>,
3515 Previous: <a rel="previous" accesskey="p" href="#Other-programs">Other programs</a>,
3516 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3520 <h2 class="unnumbered">Copyright</h2>
3522 <p>Copyright © 1991 Digital Equipment Corporation, Maynard, Massachusetts.
3524 <p>All Rights Reserved.
3526 <p>Permission to use, copy, modify, and distribute this software and its
3527 documentation for any purpose and without fee is hereby granted,
3528 provided that the above copyright notice appear in all copies and that
3529 both that copyright notice and this permission notice appear in
3530 supporting documentation, and that the name of Digital not be
3531 used in advertising or publicity pertaining to distribution of the
3532 software without specific, written prior permission.
3534 <p>Digital disclaims all warranties with regard to this software, including
3535 all implied warranties of merchantability and fitness. In no event shall
3536 Digital be liable for any special, indirect or consequential damages or
3537 any damages whatsoever resulting from loss of use, data or profits,
3538 whether in an action of contract, negligence or other tortious action,
3539 arising out of or in connection with the use or performance of this
3542 <p>Enhancements copyright © 1992-2003, 2004, 2005, 2006, 2007,
3543 2008, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
3545 <pre class="format">Published by the Free Software Foundation
3546 59 Temple Place - Suite 330
3547 Boston, MA 02111-1307 USA
3549 <p>Permission is granted to make and distribute verbatim copies of
3550 this manual provided the copyright notice and this permission notice
3551 are preserved on all copies.
3553 <p>Permission is granted to copy and distribute modified versions of this
3554 manual under the conditions for verbatim copying, provided also that the
3555 section entitled “GNU General Public License,”
3556 is included exactly as in the original, and provided that the entire
3557 resulting derived work is distributed under the terms of a permission
3558 notice identical to this one.
3560 <p>Permission is granted to copy and distribute translations of this manual
3561 into another language, under the above conditions for modified versions,
3562 except that the section entitled “GNU General Public License,”
3563 and this permission notice, may be included in translations approved by
3564 the Free Software Foundation instead of in the original English.
3567 <a name="Copying"></a>
3569 Next: <a rel="next" accesskey="n" href="#Index">Index</a>,
3570 Previous: <a rel="previous" accesskey="p" href="#Copyright">Copyright</a>,
3571 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3575 <h2 class="unnumbered">GNU GENERAL PUBLIC LICENSE</h2>
3577 <!-- The GNU General Public License. -->
3578 <div align="center">Version 3, 29 June 2007</div>
3580 <!-- This file is intended to be included within another document, -->
3581 <!-- hence no sectioning command or @node. -->
3582 <pre class="display"> Copyright © 2007 Free Software Foundation, Inc. <a href="http://fsf.org/">http://fsf.org/</a>
3584 Everyone is permitted to copy and distribute verbatim copies of this
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4093 publicly available network server or other readily accessible means,
4094 then you must either (1) cause the Corresponding Source to be so
4095 available, or (2) arrange to deprive yourself of the benefit of the
4096 patent license for this particular work, or (3) arrange, in a manner
4097 consistent with the requirements of this License, to extend the patent
4098 license to downstream recipients. “Knowingly relying” means you have
4099 actual knowledge that, but for the patent license, your conveying the
4100 covered work in a country, or your recipient's use of the covered work
4101 in a country, would infringe one or more identifiable patents in that
4102 country that you have reason to believe are valid.
4104 <p>If, pursuant to or in connection with a single transaction or
4105 arrangement, you convey, or propagate by procuring conveyance of, a
4106 covered work, and grant a patent license to some of the parties
4107 receiving the covered work authorizing them to use, propagate, modify
4108 or convey a specific copy of the covered work, then the patent license
4109 you grant is automatically extended to all recipients of the covered
4110 work and works based on it.
4112 <p>A patent license is “discriminatory” if it does not include within the
4113 scope of its coverage, prohibits the exercise of, or is conditioned on
4114 the non-exercise of one or more of the rights that are specifically
4115 granted under this License. You may not convey a covered work if you
4116 are a party to an arrangement with a third party that is in the
4117 business of distributing software, under which you make payment to the
4118 third party based on the extent of your activity of conveying the
4119 work, and under which the third party grants, to any of the parties
4120 who would receive the covered work from you, a discriminatory patent
4121 license (a) in connection with copies of the covered work conveyed by
4122 you (or copies made from those copies), or (b) primarily for and in
4123 connection with specific products or compilations that contain the
4124 covered work, unless you entered into that arrangement, or that patent
4125 license was granted, prior to 28 March 2007.
4127 <p>Nothing in this License shall be construed as excluding or limiting
4128 any implied license or other defenses to infringement that may
4129 otherwise be available to you under applicable patent law.
4131 <li>No Surrender of Others' Freedom.
4133 <p>If conditions are imposed on you (whether by court order, agreement or
4134 otherwise) that contradict the conditions of this License, they do not
4135 excuse you from the conditions of this License. If you cannot convey
4136 a covered work so as to satisfy simultaneously your obligations under
4137 this License and any other pertinent obligations, then as a
4138 consequence you may not convey it at all. For example, if you agree
4139 to terms that obligate you to collect a royalty for further conveying
4140 from those to whom you convey the Program, the only way you could
4141 satisfy both those terms and this License would be to refrain entirely
4142 from conveying the Program.
4144 <li>Use with the GNU Affero General Public License.
4146 <p>Notwithstanding any other provision of this License, you have
4147 permission to link or combine any covered work with a work licensed
4148 under version 3 of the GNU Affero General Public License into a single
4149 combined work, and to convey the resulting work. The terms of this
4150 License will continue to apply to the part which is the covered work,
4151 but the special requirements of the GNU Affero General Public License,
4152 section 13, concerning interaction through a network will apply to the
4153 combination as such.
4155 <li>Revised Versions of this License.
4157 <p>The Free Software Foundation may publish revised and/or new versions
4158 of the GNU General Public License from time to time. Such new
4159 versions will be similar in spirit to the present version, but may
4160 differ in detail to address new problems or concerns.
4162 <p>Each version is given a distinguishing version number. If the Program
4163 specifies that a certain numbered version of the GNU General Public
4164 License “or any later version” applies to it, you have the option of
4165 following the terms and conditions either of that numbered version or
4166 of any later version published by the Free Software Foundation. If
4167 the Program does not specify a version number of the GNU General
4168 Public License, you may choose any version ever published by the Free
4169 Software Foundation.
4171 <p>If the Program specifies that a proxy can decide which future versions
4172 of the GNU General Public License can be used, that proxy's public
4173 statement of acceptance of a version permanently authorizes you to
4174 choose that version for the Program.
4176 <p>Later license versions may give you additional or different
4177 permissions. However, no additional obligations are imposed on any
4178 author or copyright holder as a result of your choosing to follow a
4181 <li>Disclaimer of Warranty.
4183 <p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
4184 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
4185 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT
4186 WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
4187 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
4188 A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
4189 PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
4190 DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
4193 <li>Limitation of Liability.
4195 <p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
4196 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
4197 CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
4198 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
4199 ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
4200 NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
4201 LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
4202 TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
4203 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
4205 <li>Interpretation of Sections 15 and 16.
4207 <p>If the disclaimer of warranty and limitation of liability provided
4208 above cannot be given local legal effect according to their terms,
4209 reviewing courts shall apply local law that most closely approximates
4210 an absolute waiver of all civil liability in connection with the
4211 Program, unless a warranty or assumption of liability accompanies a
4212 copy of the Program in return for a fee.
4216 <h3 class="heading">END OF TERMS AND CONDITIONS</h3>
4218 <h3 class="heading">How to Apply These Terms to Your New Programs</h3>
4220 <p>If you develop a new program, and you want it to be of the greatest
4221 possible use to the public, the best way to achieve this is to make it
4222 free software which everyone can redistribute and change under these
4225 <p>To do so, attach the following notices to the program. It is safest
4226 to attach them to the start of each source file to most effectively
4227 state the exclusion of warranty; and each file should have at least
4228 the “copyright” line and a pointer to where the full notice is found.
4230 <pre class="smallexample"> <var>one line to give the program's name and a brief idea of what it does.</var>
4231 Copyright (C) <var>year</var> <var>name of author</var>
4233 This program is free software: you can redistribute it and/or modify
4234 it under the terms of the GNU General Public License as published by
4235 the Free Software Foundation, either version 3 of the License, or (at
4236 your option) any later version.
4238 This program is distributed in the hope that it will be useful, but
4239 WITHOUT ANY WARRANTY; without even the implied warranty of
4240 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
4241 General Public License for more details.
4243 You should have received a copy of the GNU General Public License
4244 along with this program. If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
4246 <p>Also add information on how to contact you by electronic and paper mail.
4248 <p>If the program does terminal interaction, make it output a short
4249 notice like this when it starts in an interactive mode:
4251 <pre class="smallexample"> <var>program</var> Copyright (C) <var>year</var> <var>name of author</var>
4252 This program comes with ABSOLUTELY NO WARRANTY; for details type ‘<samp><span class="samp">show w</span></samp>’.
4253 This is free software, and you are welcome to redistribute it
4254 under certain conditions; type ‘<samp><span class="samp">show c</span></samp>’ for details.
4256 <p>The hypothetical commands ‘<samp><span class="samp">show w</span></samp>’ and ‘<samp><span class="samp">show c</span></samp>’ should show
4257 the appropriate parts of the General Public License. Of course, your
4258 program's commands might be different; for a GUI interface, you would
4259 use an “about box”.
4261 <p>You should also get your employer (if you work as a programmer) or school,
4262 if any, to sign a “copyright disclaimer” for the program, if necessary.
4263 For more information on this, and how to apply and follow the GNU GPL, see
4264 <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
4266 <p>The GNU General Public License does not permit incorporating your
4267 program into proprietary programs. If your program is a subroutine
4268 library, you may consider it more useful to permit linking proprietary
4269 applications with the library. If this is what you want to do, use
4270 the GNU Lesser General Public License instead of this License. But
4271 first, please read <a href="http://www.gnu.org/philosophy/why-not-lgpl.html">http://www.gnu.org/philosophy/why-not-lgpl.html</a>.
4275 <a name="Index"></a>
4277 Previous: <a rel="previous" accesskey="p" href="#Copying">Copying</a>,
4278 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
4282 <h2 class="unnumbered">Index</h2>
4284 <ul class="index-cp" compact>
4285 <li><a href="#index-g_t_002danimateSpeed_002c-option-529">-animateSpeed, option</a>: <a href="#User-interface-options">User interface options</a></li>
4286 <li><a href="#index-g_t_002dautoDisplayComment_002c-option-530">-autoDisplayComment, option</a>: <a href="#User-interface-options">User interface options</a></li>
4287 <li><a href="#index-g_t_002dautoDisplayTags_002c-option-531">-autoDisplayTags, option</a>: <a href="#User-interface-options">User interface options</a></li>
4288 <li><a href="#index-g_t_002dpasteSelection_002c-option-532">-pasteSelection, option</a>: <a href="#User-interface-options">User interface options</a></li>
4289 <li><a href="#index-g_t_002eicsrc-331">.icsrc</a>: <a href="#ICS-options">ICS options</a></li>
4290 <li><a href="#index-g_t_003c_002c-Button-37"><, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4291 <li><a href="#index-g_t_003c_003c_002c-Button-41"><<, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4292 <li><a href="#index-g_t_003e_002c-Button-39">>, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4293 <li><a href="#index-g_t_003e_003e_002c-Button-43">>>, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4294 <li><a href="#index-abort_002c-ICS-command-591">abort, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4295 <li><a href="#index-Abort_002c-Menu-Item-76">Abort, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4296 <li><a href="#index-About-XBoard_002c-Menu-Item-186">About XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
4297 <li><a href="#index-Absolute-Analysis-Scores_002c-Menu-Item-98">Absolute Analysis Scores, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4298 <li><a href="#index-absoluteAnalysisScores_002c-option-538">absoluteAnalysisScores, option</a>: <a href="#User-interface-options">User interface options</a></li>
4299 <li><a href="#index-accept_002c-ICS-command-587">accept, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4300 <li><a href="#index-Accept_002c-Menu-Item-71">Accept, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4301 <li><a href="#index-Action_002c-Menu-70">Action, Menu</a>: <a href="#Action-Menu">Action Menu</a></li>
4302 <li><a href="#index-adapterCommand_002c-option-271">adapterCommand, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4303 <li><a href="#index-adjourn_002c-ICS-command-590">adjourn, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4304 <li><a href="#index-Adjourn_002c-Menu-Item-75">Adjourn, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4305 <li><a href="#index-Adjudicate-Draw_002c-Menu-Item-83">Adjudicate Draw, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4306 <li><a href="#index-Adjudicate-to-Black_002c-Menu-Item-82">Adjudicate to Black, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4307 <li><a href="#index-Adjudicate-to-White_002c-Menu-Item-81">Adjudicate to White, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4308 <li><a href="#index-adjudicateDrawMoves_002c-option-543">adjudicateDrawMoves, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4309 <li><a href="#index-adjudicateLossThreshold_002c-option-542">adjudicateLossThreshold, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4310 <li><a href="#index-Adjudications_002c-Menu-Item-127">Adjudications, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4311 <li><a href="#index-afterGame_002c-option-308">afterGame, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4312 <li><a href="#index-afterTourney_002c-option-309">afterTourney, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4313 <li><a href="#index-alarm_002c-option-350">alarm, option</a>: <a href="#ICS-options">ICS options</a></li>
4314 <li><a href="#index-Almost-Always-Queen_002c-Menu-Item-99">Almost Always Queen, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4315 <li><a href="#index-Also-match-left_002dright-flipped-position_002c-Menu-Item-176">Also match left-right flipped position, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4316 <li><a href="#index-Also-match-reversed-colors_002c-Menu-Item-175">Also match reversed colors, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4317 <li><a href="#index-alwaysPromoteToQueen_002c-option-454">alwaysPromoteToQueen, option</a>: <a href="#User-interface-options">User interface options</a></li>
4318 <li><a href="#index-Analysis-Mode_002c-Menu-Item-62">Analysis Mode, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4319 <li><a href="#index-Analyze-Game_002c-Menu-Item-64">Analyze Game, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4320 <li><a href="#index-Animate-Dragging_002c-Menu-Item-100">Animate Dragging, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4321 <li><a href="#index-Animate-Moving_002c-Menu-Item-101">Animate Moving, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4322 <li><a href="#index-animate_002c-option-527">animate, option</a>: <a href="#User-interface-options">User interface options</a></li>
4323 <li><a href="#index-animateDragging_002c-option-526">animateDragging, option</a>: <a href="#User-interface-options">User interface options</a></li>
4324 <li><a href="#index-animateMoving_002c-option-528">animateMoving, option</a>: <a href="#User-interface-options">User interface options</a></li>
4325 <li><a href="#index-Animation-Speed_002c-Menu-Item-123">Animation Speed, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4326 <li><a href="#index-Annotate_002c-Menu-Item-34">Annotate, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4327 <li><a href="#index-appendPV_002c-option-537">appendPV, option</a>: <a href="#User-interface-options">User interface options</a></li>
4328 <li><a href="#index-at-sign_002c-option-428">at sign, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4329 <li><a href="#index-Authors-607">Authors</a>: <a href="#Contributors">Contributors</a></li>
4330 <li><a href="#index-Auto-Comment_002c-Menu-Item-130">Auto Comment, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4331 <li><a href="#index-Auto-Flag_002c-Menu-Item-102">Auto Flag, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4332 <li><a href="#index-Auto-Flip-View_002c-Menu-Item-103">Auto Flip View, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4333 <li><a href="#index-Auto-Kibitz_002c-Menu-Item-129">Auto Kibitz, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4334 <li><a href="#index-Auto-Observe_002c-Menu-Item-131">Auto Observe, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4335 <li><a href="#index-Auto-Raise-Board_002c-Menu-Item-132">Auto Raise Board, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4336 <li><a href="#index-Auto-Save_002c-Menu-Item-133">Auto Save, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4337 <li><a href="#index-Auto_002dRefresh-Seek-Graph_002c-Menu-Item-139">Auto-Refresh Seek Graph, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4338 <li><a href="#index-autobs_002c-option-339">autobs, option</a>: <a href="#ICS-options">ICS options</a></li>
4339 <li><a href="#index-autoCallFlag_002c-option-338">autoCallFlag, option</a>: <a href="#ICS-options">ICS options</a></li>
4340 <li><a href="#index-autocomm_002c-option-335">autocomm, option</a>: <a href="#ICS-options">ICS options</a></li>
4341 <li><a href="#index-autoComment_002c-option-336">autoComment, option</a>: <a href="#ICS-options">ICS options</a></li>
4342 <li><a href="#index-autoCopyPV_002c-option-533">autoCopyPV, option</a>: <a href="#User-interface-options">User interface options</a></li>
4343 <li><a href="#index-autoflag_002c-option-337">autoflag, option</a>: <a href="#ICS-options">ICS options</a></li>
4344 <li><a href="#index-autoflip_002c-option-466">autoflip, option</a>: <a href="#User-interface-options">User interface options</a></li>
4345 <li><a href="#index-autoFlipView_002c-option-467">autoFlipView, option</a>: <a href="#User-interface-options">User interface options</a></li>
4346 <li><a href="#index-autoInstall_002c-option-444">autoInstall, option</a>: <a href="#User-interface-options">User interface options</a></li>
4347 <li><a href="#index-autoKibitz_002c-option-341">autoKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
4348 <li><a href="#index-autoLogo_002c-option-440">autoLogo, option</a>: <a href="#User-interface-options">User interface options</a></li>
4349 <li><a href="#index-autoObserve_002c-option-340">autoObserve, option</a>: <a href="#ICS-options">ICS options</a></li>
4350 <li><a href="#index-autoraise_002c-option-464">autoraise, option</a>: <a href="#User-interface-options">User interface options</a></li>
4351 <li><a href="#index-autoRaiseBoard_002c-option-465">autoRaiseBoard, option</a>: <a href="#User-interface-options">User interface options</a></li>
4352 <li><a href="#index-autoRefresh_002c-option-344">autoRefresh, option</a>: <a href="#ICS-options">ICS options</a></li>
4353 <li><a href="#index-autosave_002c-option-409">autosave, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4354 <li><a href="#index-autoSaveGames_002c-option-410">autoSaveGames, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4355 <li><a href="#index-Back-to-Start_002c-Menu-Item-40">Back to Start, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4356 <li><a href="#index-Background-Observe_002c-Menu-Item-134">Background Observe, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4357 <li><a href="#index-backgroundObserve_002c-option-345">backgroundObserve, option</a>: <a href="#ICS-options">ICS options</a></li>
4358 <li><a href="#index-Backward_002c-Menu-Item-36">Backward, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4359 <li><a href="#index-Basic-operation-3">Basic operation</a>: <a href="#Basic-operation">Basic operation</a></li>
4360 <li><a href="#index-bell_002c-option-447">bell, option</a>: <a href="#User-interface-options">User interface options</a></li>
4361 <li><a href="#index-blackPieceColor_002c-option-515">blackPieceColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4362 <li><a href="#index-blind_002c-option-487">blind, option</a>: <a href="#User-interface-options">User interface options</a></li>
4363 <li><a href="#index-Blindfold_002c-Menu-Item-104">Blindfold, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4364 <li><a href="#index-blindfold_002c-option-488">blindfold, option</a>: <a href="#User-interface-options">User interface options</a></li>
4365 <li><a href="#index-board-size-460">board size</a>: <a href="#User-interface-options">User interface options</a></li>
4366 <li><a href="#index-Board_002c-Menu-Item-55">Board, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4367 <li><a href="#index-boardHeight_002c-option-558">boardHeight, option</a>: <a href="#Other-options">Other options</a></li>
4368 <li><a href="#index-boardSize_002c-option-459">boardSize, option</a>: <a href="#User-interface-options">User interface options</a></li>
4369 <li><a href="#index-boardWidth_002c-option-559">boardWidth, option</a>: <a href="#Other-options">Other options</a></li>
4370 <li><a href="#index-Book_002c-Menu-Item-91">Book, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4371 <li><a href="#index-bookDepth_002c-option-283">bookDepth, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4372 <li><a href="#index-bookVariation_002c-option-284">bookVariation, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4373 <li><a href="#index-Bug-reports-603">Bug reports</a>: <a href="#Problems">Problems</a></li>
4374 <li><a href="#index-Bugs-602">Bugs</a>: <a href="#Problems">Problems</a></li>
4375 <li><a href="#index-Bugs-601">Bugs</a>: <a href="#Limitations">Limitations</a></li>
4376 <li><a href="#index-buttons_002c-option-472">buttons, option</a>: <a href="#User-interface-options">User interface options</a></li>
4377 <li><a href="#index-Call-Flag_002c-Menu-Item-73">Call Flag, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4378 <li><a href="#index-checkMates_002c-option-544">checkMates, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4379 <li><a href="#index-Chess-engine-options-197">Chess engine options</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4380 <li><a href="#index-CHESSDIR-599">CHESSDIR</a>: <a href="#Environment">Environment</a></li>
4381 <li><a href="#index-clock_002c-option-204">clock, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4382 <li><a href="#index-clockFont_002c-option-494">clockFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4383 <li><a href="#index-clockMode_002c-option-205">clockMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4384 <li><a href="#index-CloneTourney_002c-Menu-Item-166">CloneTourney, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4385 <li><a href="#index-cmail-609">cmail</a>: <a href="#CMail">CMail</a></li>
4386 <li><a href="#index-colorChallenge_002c-option-375">colorChallenge, option</a>: <a href="#ICS-options">ICS options</a></li>
4387 <li><a href="#index-colorChannel_002c-option-372">colorChannel, option</a>: <a href="#ICS-options">ICS options</a></li>
4388 <li><a href="#index-colorChannel1_002c-option-371">colorChannel1, option</a>: <a href="#ICS-options">ICS options</a></li>
4389 <li><a href="#index-colorCShout_002c-option-370">colorCShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4390 <li><a href="#index-Colorize-Messages_002c-Menu-Item-147">Colorize Messages, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4391 <li><a href="#index-colorize_002c-option-365">colorize, option</a>: <a href="#ICS-options">ICS options</a></li>
4392 <li><a href="#index-colorizeMessages_002c-option-366">colorizeMessages, option</a>: <a href="#ICS-options">ICS options</a></li>
4393 <li><a href="#index-colorKibitz_002c-option-373">colorKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
4394 <li><a href="#index-colorNickNames_002c-option-564">colorNickNames, option</a>: <a href="#Other-options">Other options</a></li>
4395 <li><a href="#index-colorNormal_002c-option-378">colorNormal, option</a>: <a href="#ICS-options">ICS options</a></li>
4396 <li><a href="#index-colorRequest_002c-option-376">colorRequest, option</a>: <a href="#ICS-options">ICS options</a></li>
4397 <li><a href="#index-Colors-513">Colors</a>: <a href="#User-interface-options">User interface options</a></li>
4398 <li><a href="#index-Colors-364">Colors</a>: <a href="#ICS-options">ICS options</a></li>
4399 <li><a href="#index-colorSeek_002c-option-377">colorSeek, option</a>: <a href="#ICS-options">ICS options</a></li>
4400 <li><a href="#index-colorShout_002c-option-368">colorShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4401 <li><a href="#index-colorSShout_002c-option-369">colorSShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4402 <li><a href="#index-colorTell_002c-option-374">colorTell, option</a>: <a href="#ICS-options">ICS options</a></li>
4403 <li><a href="#index-commentFont_002c-option-502">commentFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4404 <li><a href="#index-Comments_002c-Menu-Item-52">Comments, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4405 <li><a href="#index-Common-Engine_002c-Menu-Item-126">Common Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4406 <li><a href="#index-Contributors-608">Contributors</a>: <a href="#Contributors">Contributors</a></li>
4407 <li><a href="#index-coordFont_002c-option-496">coordFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4408 <li><a href="#index-coords_002c-option-462">coords, option</a>: <a href="#User-interface-options">User interface options</a></li>
4409 <li><a href="#index-Copy-Game-List_002c-Menu-Item-25">Copy Game List, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4410 <li><a href="#index-Copy-Game_002c-Menu-Item-23">Copy Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4411 <li><a href="#index-Copy-Position_002c-Menu-Item-24">Copy Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4412 <li><a href="#index-cy_002c-option-302">cy, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4413 <li><a href="#index-darkBackTextureFile_002c-option-524">darkBackTextureFile, option</a>: <a href="#User-interface-options">User interface options</a></li>
4414 <li><a href="#index-darkSquareColor_002c-option-517">darkSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4415 <li><a href="#index-dateThreshold_002c-option-580">dateThreshold, option</a>: <a href="#Other-options">Other options</a></li>
4416 <li><a href="#index-debug_002c-option-565">debug, option</a>: <a href="#Other-options">Other options</a></li>
4417 <li><a href="#index-debugFile_002c-option-567">debugFile, option</a>: <a href="#Other-options">Other options</a></li>
4418 <li><a href="#index-debugMode_002c-option-566">debugMode, option</a>: <a href="#Other-options">Other options</a></li>
4419 <li><a href="#index-decline_002c-ICS-command-588">decline, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4420 <li><a href="#index-Decline_002c-Menu-Item-72">Decline, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4421 <li><a href="#index-Default-number-of-Games_002c-Menu-Item-156">Default number of Games, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4422 <li><a href="#index-defaultCacheSizeEGTB_002c-option-291">defaultCacheSizeEGTB, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4423 <li><a href="#index-defaultFrcPosition_002c-option-561">defaultFrcPosition, option</a>: <a href="#Other-options">Other options</a></li>
4424 <li><a href="#index-defaultHashSize_002c-option-290">defaultHashSize, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4425 <li><a href="#index-defaultMatchGames_002c-option-296">defaultMatchGames, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4426 <li><a href="#index-defaultPathEGTB_002c-option-292">defaultPathEGTB, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4427 <li><a href="#index-defaultTourneyName_002c-option-306">defaultTourneyName, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4428 <li><a href="#index-delayAfterQuit_002c-option-576">delayAfterQuit, option</a>: <a href="#Other-options">Other options</a></li>
4429 <li><a href="#index-delayBeforeQuit_002c-option-575">delayBeforeQuit, option</a>: <a href="#Other-options">Other options</a></li>
4430 <li><a href="#index-Disable-own-engine-bools-be-default_002c-Menu-Item-163">Disable own engine bools be default, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4431 <li><a href="#index-discourageOwnBooks_002c-option-282">discourageOwnBooks, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4432 <li><a href="#index-disguisePromotedPieces_002c-option-347">disguisePromotedPieces, option</a>: <a href="#ICS-options">ICS options</a></li>
4433 <li><a href="#index-display_002c-option-432">display, option</a>: <a href="#User-interface-options">User interface options</a></li>
4434 <li><a href="#index-drag_002c-option-525">drag, option</a>: <a href="#User-interface-options">User interface options</a></li>
4435 <li><a href="#index-draw_002c-ICS-command-589">draw, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4436 <li><a href="#index-Draw_002c-Menu-Item-74">Draw, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4437 <li><a href="#index-Drop-Menu_002c-Menu-Item-105">Drop Menu, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4438 <li><a href="#index-dropMenu_002c-option-534">dropMenu, option</a>: <a href="#User-interface-options">User interface options</a></li>
4439 <li><a href="#index-Dual-Board_002c-Menu-Item-135">Dual Board, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4440 <li><a href="#index-dualBoard_002c-option-346">dualBoard, option</a>: <a href="#ICS-options">ICS options</a></li>
4441 <li><a href="#index-Edit-Book_002c-Menu-Item-32">Edit Book, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4442 <li><a href="#index-Edit-Comment_002c-Menu-Item-31">Edit Comment, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4443 <li><a href="#index-Edit-Game_002c-Menu-Item-28">Edit Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4444 <li><a href="#index-Edit-Menu-22">Edit Menu</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4445 <li><a href="#index-Edit-Position_002c-Menu-Item-29">Edit Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4446 <li><a href="#index-Edit-Tags_002c-Menu-Item-30">Edit Tags, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4447 <li><a href="#index-egtFormats_002c-option-293">egtFormats, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4448 <li><a href="#index-Elo-of-strongest-player_002c-Menu-Item-168">Elo of strongest player, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4449 <li><a href="#index-Elo-of-weakest-player_002c-Menu-Item-169">Elo of weakest player, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4450 <li><a href="#index-eloThresholdAny_002c-option-579">eloThresholdAny, option</a>: <a href="#Other-options">Other options</a></li>
4451 <li><a href="#index-eloThresholdBoth_002c-option-578">eloThresholdBoth, option</a>: <a href="#Other-options">Other options</a></li>
4452 <li><a href="#index-Enable-Variation-Trees_002c-Menu-Item-106">Enable Variation Trees, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4453 <li><a href="#index-Engine-_00231-Settings_002c-Menu-Item-88">Engine #1 Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4454 <li><a href="#index-Engine-_00232-Settings_002c-Menu-Item-89">Engine #2 Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4455 <li><a href="#index-Engine-Menu-84">Engine Menu</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4456 <li><a href="#index-Engine-Settings-261">Engine Settings</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4457 <li><a href="#index-Engine-Settings_002c-Menu-Item-87">Engine Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4458 <li><a href="#index-engineDebugOutput_002c-option-569">engineDebugOutput, option</a>: <a href="#Other-options">Other options</a></li>
4459 <li><a href="#index-Environment-variables-598">Environment variables</a>: <a href="#Environment">Environment</a></li>
4460 <li><a href="#index-evalThreshold_002c-option-475">evalThreshold, option</a>: <a href="#User-interface-options">User interface options</a></li>
4461 <li><a href="#index-evalZoom_002c-option-474">evalZoom, option</a>: <a href="#User-interface-options">User interface options</a></li>
4462 <li><a href="#index-examine_002c-ICS-command-596">examine, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4463 <li><a href="#index-Exit_002c-Menu-Item-20">Exit, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4464 <li><a href="#index-exit_002c-option-449">exit, option</a>: <a href="#User-interface-options">User interface options</a></li>
4465 <li><a href="#index-fb_002c-option-232">fb, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4466 <li><a href="#index-fcp_002c-option-224">fcp, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4467 <li><a href="#index-fd_002c-option-238">fd, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4468 <li><a href="#index-fe_002c-option-228">fe, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4469 <li><a href="#index-fh_002c-option-234">fh, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4470 <li><a href="#index-File-Menu-5">File Menu</a>: <a href="#File-Menu">File Menu</a></li>
4471 <li><a href="#index-File-with-Start-Positions_002c-Menu-Item-159">File with Start Positions, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4472 <li><a href="#index-find-position_002c-Menu-Item-172">find position, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4473 <li><a href="#index-finger_002c-ICS-command-592">finger, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4474 <li><a href="#index-First-Black-Move_002c-Menu-Item-144">First Black Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4475 <li><a href="#index-First-White-Move_002c-Menu-Item-143">First White Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4476 <li><a href="#index-firstChessProgram_002c-option-225">firstChessProgram, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4477 <li><a href="#index-firstComputerString_002c-option-245">firstComputerString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4478 <li><a href="#index-firstDirectory_002c-option-239">firstDirectory, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4479 <li><a href="#index-firstEngine_002c-option-229">firstEngine, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4480 <li><a href="#index-firstHasOwnBookUCI_002c-option-278">firstHasOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4481 <li><a href="#index-firstHost_002c-option-235">firstHost, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4482 <li><a href="#index-firstInitString_002c-option-243">firstInitString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4483 <li><a href="#index-firstIsUCI_002c-option-265">firstIsUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4484 <li><a href="#index-firstLogo_002c-option-438">firstLogo, option</a>: <a href="#User-interface-options">User interface options</a></li>
4485 <li><a href="#index-firstNeedsNoncompliantFEN_002c-option-258">firstNeedsNoncompliantFEN, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4486 <li><a href="#index-firstNPS_002c-option-210">firstNPS, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4487 <li><a href="#index-firstOptions_002c-option-256">firstOptions, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4488 <li><a href="#index-firstPgnName_002c-option-286">firstPgnName, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4489 <li><a href="#index-firstPlaysBlack_002c-option-233">firstPlaysBlack, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4490 <li><a href="#index-firstProtocolVersion_002c-option-251">firstProtocolVersion, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4491 <li><a href="#index-firstScoreAbs_002c-option-253">firstScoreAbs, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4492 <li><a href="#index-firstTimeOdds_002c-option-212">firstTimeOdds, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4493 <li><a href="#index-firstXBook_002c-option-280">firstXBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4494 <li><a href="#index-Flash-Moves_002c-Menu-Item-121">Flash Moves, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4495 <li><a href="#index-Flash-Rate_002c-Menu-Item-122">Flash Rate, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4496 <li><a href="#index-flash_002c-option-481">flash, option</a>: <a href="#User-interface-options">User interface options</a></li>
4497 <li><a href="#index-flashCount_002c-option-479">flashCount, option</a>: <a href="#User-interface-options">User interface options</a></li>
4498 <li><a href="#index-flashRate_002c-option-480">flashRate, option</a>: <a href="#User-interface-options">User interface options</a></li>
4499 <li><a href="#index-Flip-View_002c-Menu-Item-46">Flip View, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4500 <li><a href="#index-flip_002c-option-468">flip, option</a>: <a href="#User-interface-options">User interface options</a></li>
4501 <li><a href="#index-flipView_002c-option-469">flipView, option</a>: <a href="#User-interface-options">User interface options</a></li>
4502 <li><a href="#index-fn_002c-option-288">fn, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4503 <li><a href="#index-fNoOwnBookUCI_002c-option-276">fNoOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4504 <li><a href="#index-Font_002c-clock-495">Font, clock</a>: <a href="#User-interface-options">User interface options</a></li>
4505 <li><a href="#index-Font_002c-comment-503">Font, comment</a>: <a href="#User-interface-options">User interface options</a></li>
4506 <li><a href="#index-Font_002c-coordinates-497">Font, coordinates</a>: <a href="#User-interface-options">User interface options</a></li>
4507 <li><a href="#index-Font_002c-gameList-509">Font, gameList</a>: <a href="#User-interface-options">User interface options</a></li>
4508 <li><a href="#index-Font_002c-ics-505">Font, ics</a>: <a href="#User-interface-options">User interface options</a></li>
4509 <li><a href="#index-Font_002c-message-499">Font, message</a>: <a href="#User-interface-options">User interface options</a></li>
4510 <li><a href="#index-Font_002c-moveHistory-507">Font, moveHistory</a>: <a href="#User-interface-options">User interface options</a></li>
4511 <li><a href="#index-Font_002c-tags-501">Font, tags</a>: <a href="#User-interface-options">User interface options</a></li>
4512 <li><a href="#index-fontSizeTolerance_002c-option-510">fontSizeTolerance, option</a>: <a href="#User-interface-options">User interface options</a></li>
4513 <li><a href="#index-Forward-to-End_002c-Menu-Item-42">Forward to End, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4514 <li><a href="#index-Forward_002c-Menu-Item-38">Forward, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4515 <li><a href="#index-fSAN_002c-option-491">fSAN, option</a>: <a href="#User-interface-options">User interface options</a></li>
4516 <li><a href="#index-fUCCI_002c-option-267">fUCCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4517 <li><a href="#index-fUCI_002c-option-263">fUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4518 <li><a href="#index-fUSI_002c-option-269">fUSI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4519 <li><a href="#index-Game-File-with-Opening-Lines_002c-Menu-Item-158">Game File with Opening Lines, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4520 <li><a href="#index-Game-List-Tags_002c-Menu-Item-178">Game List Tags, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4521 <li><a href="#index-Game-List-Tags_002c-Menu-Item-56">Game List Tags, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4522 <li><a href="#index-Game-Number_002c-Menu-Item-160">Game Number, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4523 <li><a href="#index-gameListFont_002c-option-508">gameListFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4524 <li><a href="#index-gameListTags_002c-option-424">gameListTags, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4525 <li><a href="#index-games_002c-ICS-command-586">games, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4526 <li><a href="#index-gateway_002c-option-326">gateway, option</a>: <a href="#ICS-options">ICS options</a></li>
4527 <li><a href="#index-General-Options_002c-Menu-Item-97">General Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4528 <li><a href="#index-geometry_002c-option-433">geometry, option</a>: <a href="#User-interface-options">User interface options</a></li>
4529 <li><a href="#index-Get-Move-List_002c-Menu-Item-136">Get Move List, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4530 <li><a href="#index-getMoveList_002c-option-349">getMoveList, option</a>: <a href="#ICS-options">ICS options</a></li>
4531 <li><a href="#index-Help-Menu-183">Help Menu</a>: <a href="#Help-Menu">Help Menu</a></li>
4532 <li><a href="#index-help_002c-ICS-command-584">help, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4533 <li><a href="#index-Hide-Thinking_002c-Menu-Item-107">Hide Thinking, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4534 <li><a href="#index-highlight-Arrow_002c-option-485">highlight Arrow, option</a>: <a href="#User-interface-options">User interface options</a></li>
4535 <li><a href="#index-Highlight-Last-Move_002c-Menu-Item-108">Highlight Last Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4536 <li><a href="#index-Highlight-with-Arrow_002c-Menu-Item-109">Highlight with Arrow, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4537 <li><a href="#index-highlight_002c-option-483">highlight, option</a>: <a href="#User-interface-options">User interface options</a></li>
4538 <li><a href="#index-highlightLastMove_002c-option-484">highlightLastMove, option</a>: <a href="#User-interface-options">User interface options</a></li>
4539 <li><a href="#index-highlightMoveWithArrow_002c-option-486">highlightMoveWithArrow, option</a>: <a href="#User-interface-options">User interface options</a></li>
4540 <li><a href="#index-highlightSquareColor_002c-option-518">highlightSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4541 <li><a href="#index-Hint_002c-Menu-Item-90">Hint, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4542 <li><a href="#index-holdingsSize_002c-option-560">holdingsSize, option</a>: <a href="#Other-options">Other options</a></li>
4543 <li><a href="#index-iconic_002c-option-434">iconic, option</a>: <a href="#User-interface-options">User interface options</a></li>
4544 <li><a href="#index-ICS-581">ICS</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4545 <li><a href="#index-ICS-Alarm-Time_002c-Menu-Item-146">ICS Alarm Time, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4546 <li><a href="#index-ICS-Alarm_002c-Menu-Item-145">ICS Alarm, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4547 <li><a href="#index-ICS-Client_002c-Menu-Item-66">ICS Client, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4548 <li><a href="#index-ICS-Input-Box_002c-Menu-Item-53">ICS Input Box, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4549 <li><a href="#index-ICS-options-313">ICS options</a>: <a href="#ICS-options">ICS options</a></li>
4550 <li><a href="#index-ICS-Options_002c-Menu-Item-128">ICS Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4551 <li><a href="#index-ICS_002c-addresses-582">ICS, addresses</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4552 <li><a href="#index-ics_002c-option-315">ics, option</a>: <a href="#ICS-options">ICS options</a></li>
4553 <li><a href="#index-icsAlarm_002c-option-351">icsAlarm, option</a>: <a href="#ICS-options">ICS options</a></li>
4554 <li><a href="#index-icsAlarmTime_002c-option-352">icsAlarmTime, option</a>: <a href="#ICS-options">ICS options</a></li>
4555 <li><a href="#index-icscomm_002c-option-328">icscomm, option</a>: <a href="#ICS-options">ICS options</a></li>
4556 <li><a href="#index-icsFont_002c-option-504">icsFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4557 <li><a href="#index-icshelper_002c-option-321">icshelper, option</a>: <a href="#ICS-options">ICS options</a></li>
4558 <li><a href="#index-icshost_002c-option-317">icshost, option</a>: <a href="#ICS-options">ICS options</a></li>
4559 <li><a href="#index-icsinput_002c-option-333">icsinput, option</a>: <a href="#ICS-options">ICS options</a></li>
4560 <li><a href="#index-icslogon_002c-option-329">icslogon, option</a>: <a href="#ICS-options">ICS options</a></li>
4561 <li><a href="#index-icsport_002c-option-319">icsport, option</a>: <a href="#ICS-options">ICS options</a></li>
4562 <li><a href="#index-inc_002c-option-202">inc, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4563 <li><a href="#index-Info-XBoard_002c-Menu-Item-184">Info XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
4564 <li><a href="#index-init_002c-option-427">init, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4565 <li><a href="#index-initalMode_002c-option-556">initalMode, option</a>: <a href="#Other-options">Other options</a></li>
4566 <li><a href="#index-initString_002c-option-242">initString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4567 <li><a href="#index-Internet-Chess-Server-583">Internet Chess Server</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4568 <li><a href="#index-internetChessServerCommPort_002c-option-327">internetChessServerCommPort, option</a>: <a href="#ICS-options">ICS options</a></li>
4569 <li><a href="#index-internetChessServerHelper_002c-option-322">internetChessServerHelper, option</a>: <a href="#ICS-options">ICS options</a></li>
4570 <li><a href="#index-internetChessServerHost_002c-option-318">internetChessServerHost, option</a>: <a href="#ICS-options">ICS options</a></li>
4571 <li><a href="#index-internetChessServerInputBox_002c-option-334">internetChessServerInputBox, option</a>: <a href="#ICS-options">ICS options</a></li>
4572 <li><a href="#index-internetChessServerLogonScript_002c-option-330">internetChessServerLogonScript, option</a>: <a href="#ICS-options">ICS options</a></li>
4573 <li><a href="#index-internetChessServerMode_002c-option-316">internetChessServerMode, option</a>: <a href="#ICS-options">ICS options</a></li>
4574 <li><a href="#index-internetChessServerPort_002c-option-320">internetChessServerPort, option</a>: <a href="#ICS-options">ICS options</a></li>
4575 <li><a href="#index-introduction-1">introduction</a>: <a href="#Top">Top</a></li>
4576 <li><a href="#index-Keys-187">Keys</a>: <a href="#Keys">Keys</a></li>
4577 <li><a href="#index-legal_002c-option-456">legal, option</a>: <a href="#User-interface-options">User interface options</a></li>
4578 <li><a href="#index-lgf_002c-option-401">lgf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4579 <li><a href="#index-lgi_002c-option-403">lgi, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4580 <li><a href="#index-lightSquareColor_002c-option-516">lightSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4581 <li><a href="#index-Limitations-600">Limitations</a>: <a href="#Limitations">Limitations</a></li>
4582 <li><a href="#index-liteBackTextureFile_002c-option-523">liteBackTextureFile, option</a>: <a href="#User-interface-options">User interface options</a></li>
4583 <li><a href="#index-Load-and-Save-options-400">Load and Save options</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4584 <li><a href="#index-Load-Engine_002c-Menu-Item-86">Load Engine, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4585 <li><a href="#index-Load-Game-Options_002c-Menu-Item-167">Load Game Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4586 <li><a href="#index-Load-Game_002c-Menu-Item-10">Load Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4587 <li><a href="#index-Load-Next-Game_002c-Menu-Item-190">Load Next Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
4588 <li><a href="#index-Load-Next-Position_002c-Menu-Item-12">Load Next Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4589 <li><a href="#index-Load-Position_002c-Menu-Item-11">Load Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4590 <li><a href="#index-Load-Previous-Game_002c-Menu-Item-191">Load Previous Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
4591 <li><a href="#index-Load-Previous-Position_002c-Menu-Item-13">Load Previous Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4592 <li><a href="#index-loadGameFile_002c-option-402">loadGameFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4593 <li><a href="#index-loadGameIndex_002c-option-404">loadGameIndex, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4594 <li><a href="#index-loadPositionFile_002c-option-413">loadPositionFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4595 <li><a href="#index-loadPositionIndex_002c-option-415">loadPositionIndex, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4596 <li><a href="#index-logoDir_002c-option-441">logoDir, option</a>: <a href="#User-interface-options">User interface options</a></li>
4597 <li><a href="#index-logoSize_002c-option-437">logoSize, option</a>: <a href="#User-interface-options">User interface options</a></li>
4598 <li><a href="#index-lowTimeWarning_002c-option-353">lowTimeWarning, option</a>: <a href="#ICS-options">ICS options</a></li>
4599 <li><a href="#index-lowTimeWarningColor_002c-option-520">lowTimeWarningColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4600 <li><a href="#index-lpf_002c-option-412">lpf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4601 <li><a href="#index-lpi_002c-option-414">lpi, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4602 <li><a href="#index-Machine-Black_002c-Menu-Item-60">Machine Black, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4603 <li><a href="#index-Machine-match_002c-Menu-Item-67">Machine match, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4604 <li><a href="#index-Machine-White_002c-Menu-Item-59">Machine White, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4605 <li><a href="#index-Mail-Move_002c-Menu-Item-18">Mail Move, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4606 <li><a href="#index-Major-modes-2">Major modes</a>: <a href="#Major-modes">Major modes</a></li>
4607 <li><a href="#index-Man-XBoard_002c-Menu-Item-185">Man XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
4608 <li><a href="#index-Match-Options_002c-Menu-Item-148">Match Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4609 <li><a href="#index-matchGames_002c-option-220">matchGames, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4610 <li><a href="#index-matchMode_002c-option-222">matchMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4611 <li><a href="#index-matchPause_002c-option-297">matchPause, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4612 <li><a href="#index-materialDraws_002c-option-546">materialDraws, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4613 <li><a href="#index-mcBookMode_002c-option-285">mcBookMode, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4614 <li><a href="#index-memoHeaders_002c-option-540">memoHeaders, option</a>: <a href="#User-interface-options">User interface options</a></li>
4615 <li><a href="#index-Menu_002c-Action-69">Menu, Action</a>: <a href="#Action-Menu">Action Menu</a></li>
4616 <li><a href="#index-Menu_002c-Edit-21">Menu, Edit</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4617 <li><a href="#index-Menu_002c-Engine-85">Menu, Engine</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4618 <li><a href="#index-Menu_002c-File-6">Menu, File</a>: <a href="#File-Menu">File Menu</a></li>
4619 <li><a href="#index-Menu_002c-Help-182">Menu, Help</a>: <a href="#Help-Menu">Help Menu</a></li>
4620 <li><a href="#index-Menu_002c-Mode-57">Menu, Mode</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4621 <li><a href="#index-Menu_002c-Options-95">Menu, Options</a>: <a href="#Options-Menu">Options Menu</a></li>
4622 <li><a href="#index-Menu_002c-View-44">Menu, View</a>: <a href="#View-Menu">View Menu</a></li>
4623 <li><a href="#index-Menus-4">Menus</a>: <a href="#Menus">Menus</a></li>
4624 <li><a href="#index-messageFont_002c-option-498">messageFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4625 <li><a href="#index-mg_002c-option-219">mg, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4626 <li><a href="#index-mm_002c-option-221">mm, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4627 <li><a href="#index-Mode-Menu-58">Mode Menu</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4628 <li><a href="#index-mode_002c-option-555">mode, option</a>: <a href="#Other-options">Other options</a></li>
4629 <li><a href="#index-mono_002c-option-476">mono, option</a>: <a href="#User-interface-options">User interface options</a></li>
4630 <li><a href="#index-monoMode_002c-option-477">monoMode, option</a>: <a href="#User-interface-options">User interface options</a></li>
4631 <li><a href="#index-Move-Now_002c-Menu-Item-92">Move Now, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4632 <li><a href="#index-Move-Sound_002c-Menu-Item-110">Move Sound, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4633 <li><a href="#index-moveHistoryFont_002c-option-506">moveHistoryFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4634 <li><a href="#index-moves_002c-option-348">moves, option</a>: <a href="#ICS-options">ICS options</a></li>
4635 <li><a href="#index-movesound_002c-option-446">movesound, option</a>: <a href="#User-interface-options">User interface options</a></li>
4636 <li><a href="#index-movesPerSession_002c-option-201">movesPerSession, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4637 <li><a href="#index-mps_002c-option-200">mps, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4638 <li><a href="#index-msLoginDelay_002c-option-332">msLoginDelay, option</a>: <a href="#ICS-options">ICS options</a></li>
4639 <li><a href="#index-nameOfDebugFile_002c-option-568">nameOfDebugFile, option</a>: <a href="#Other-options">Other options</a></li>
4640 <li><a href="#index-narrow_002c-Menu-Item-173">narrow, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4641 <li><a href="#index-ncp_002c-option-550">ncp, option</a>: <a href="#Other-options">Other options</a></li>
4642 <li><a href="#index-New-Game_002c-Menu-Item-7">New Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4643 <li><a href="#index-New-Shuffle-Game_002c-Menu-Item-8">New Shuffle Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4644 <li><a href="#index-New-variant_002c-Menu-Item-9">New variant, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4645 <li><a href="#index-niceEngines_002c-option-255">niceEngines, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4646 <li><a href="#index-noChessProgram_002c-option-551">noChessProgram, option</a>: <a href="#Other-options">Other options</a></li>
4647 <li><a href="#index-noGUI_002c-option-436">noGUI, option</a>: <a href="#User-interface-options">User interface options</a></li>
4648 <li><a href="#index-null-move-63">null move</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4649 <li><a href="#index-number-of-consecutive-positions_002c-Menu-Item-174">number of consecutive positions, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4650 <li><a href="#index-Number-of-tourney-cycles_002c-Menu-Item-155">Number of tourney cycles, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4651 <li><a href="#index-observe_002c-ICS-command-595">observe, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4652 <li><a href="#index-oldmoves_002c-ICS-command-597">oldmoves, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4653 <li><a href="#index-oldsave_002c-option-422">oldsave, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4654 <li><a href="#index-oldSaveStyle_002c-option-423">oldSaveStyle, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4655 <li><a href="#index-One_002dClick-Moving_002c-Menu-Item-111">One-Click Moving, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4656 <li><a href="#index-oneClickMove_002c-option-445">oneClickMove, option</a>: <a href="#User-interface-options">User interface options</a></li>
4657 <li><a href="#index-onlyOwnGames_002c-option-411">onlyOwnGames, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4658 <li><a href="#index-Open-Chat-Window_002c-Menu-Item-54">Open Chat Window, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4659 <li><a href="#index-Options-194">Options</a>: <a href="#Options">Options</a></li>
4660 <li><a href="#index-Options-Menu-96">Options Menu</a>: <a href="#Options-Menu">Options Menu</a></li>
4661 <li><a href="#index-Options_002c-adjudication-541">Options, adjudication</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4662 <li><a href="#index-options_002c-Chess-engine-196">options, Chess engine</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4663 <li><a href="#index-Options_002c-ICS-314">Options, ICS</a>: <a href="#ICS-options">ICS options</a></li>
4664 <li><a href="#index-Options_002c-Load-and-Save-399">Options, Load and Save</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4665 <li><a href="#index-Options_002c-miscellaneous-549">Options, miscellaneous</a>: <a href="#Other-options">Other options</a></li>
4666 <li><a href="#index-Options_002c-Tournament-295">Options, Tournament</a>: <a href="#Tournament-options">Tournament options</a></li>
4667 <li><a href="#index-Options_002c-User-interface-431">Options, User interface</a>: <a href="#User-interface-options">User interface options</a></li>
4668 <li><a href="#index-Other-programs-610">Other programs</a>: <a href="#Other-programs">Other programs</a></li>
4669 <li><a href="#index-overrideLineGap_002c-option-461">overrideLineGap, option</a>: <a href="#User-interface-options">User interface options</a></li>
4670 <li><a href="#index-pairingEngine_002c-option-307">pairingEngine, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4671 <li><a href="#index-participants_002c-option-304">participants, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4672 <li><a href="#index-Paste-Game_002c-Menu-Item-26">Paste Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4673 <li><a href="#index-Paste-Position_002c-Menu-Item-27">Paste Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4674 <li><a href="#index-Pause_002c-Menu-Item-68">Pause, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4675 <li><a href="#index-Periodic-Updates_002c-Menu-Item-112">Periodic Updates, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4676 <li><a href="#index-periodic_002c-option-489">periodic, option</a>: <a href="#User-interface-options">User interface options</a></li>
4677 <li><a href="#index-periodicUpdates_002c-option-490">periodicUpdates, option</a>: <a href="#User-interface-options">User interface options</a></li>
4678 <li><a href="#index-pgnEventHeader_002c-option-419">pgnEventHeader, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4679 <li><a href="#index-pgnExtendedInfo_002c-option-418">pgnExtendedInfo, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4680 <li><a href="#index-pgnNumberTag_002c-option-420">pgnNumberTag, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4681 <li><a href="#index-pid_002c-option-511">pid, option</a>: <a href="#User-interface-options">User interface options</a></li>
4682 <li><a href="#index-pieceImageDirectory_002c-option-512">pieceImageDirectory, option</a>: <a href="#User-interface-options">User interface options</a></li>
4683 <li><a href="#index-pieceMenu_002c-option-535">pieceMenu, option</a>: <a href="#User-interface-options">User interface options</a></li>
4684 <li><a href="#index-pieceNickNames_002c-option-563">pieceNickNames, option</a>: <a href="#Other-options">Other options</a></li>
4685 <li><a href="#index-pieceToCharTable_002c-option-562">pieceToCharTable, option</a>: <a href="#Other-options">Other options</a></li>
4686 <li><a href="#index-Play-Move_0028s_0029-of-Clicked-PV_002c-Menu-Item-113">Play Move(s) of Clicked PV, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4687 <li><a href="#index-polyglotBook_002c-option-275">polyglotBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4688 <li><a href="#index-polyglotDir_002c-option-273">polyglotDir, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4689 <li><a href="#index-Ponder-Next-Move_002c-Menu-Item-114">Ponder Next Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4690 <li><a href="#index-ponder_002c-option-217">ponder, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4691 <li><a href="#index-ponderNextMove_002c-option-218">ponderNextMove, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4692 <li><a href="#index-Popup-Exit-Message_002c-Menu-Item-115">Popup Exit Message, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4693 <li><a href="#index-Popup-Move-Errors_002c-Menu-Item-116">Popup Move Errors, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4694 <li><a href="#index-popup_002c-option-451">popup, option</a>: <a href="#User-interface-options">User interface options</a></li>
4695 <li><a href="#index-popupExitMessage_002c-option-450">popupExitMessage, option</a>: <a href="#User-interface-options">User interface options</a></li>
4696 <li><a href="#index-popupMoveErrors_002c-option-452">popupMoveErrors, option</a>: <a href="#User-interface-options">User interface options</a></li>
4697 <li><a href="#index-Position-Number_002c-Menu-Item-161">Position Number, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4698 <li><a href="#index-pre_002c-option-354">pre, option</a>: <a href="#ICS-options">ICS options</a></li>
4699 <li><a href="#index-preblack_002c-option-358">preblack, option</a>: <a href="#ICS-options">ICS options</a></li>
4700 <li><a href="#index-Premove-Black_002c-Menu-Item-142">Premove Black, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4701 <li><a href="#index-Premove-White_002c-Menu-Item-141">Premove White, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4702 <li><a href="#index-Premove_002c-Menu-Item-140">Premove, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4703 <li><a href="#index-premove_002c-option-355">premove, option</a>: <a href="#ICS-options">ICS options</a></li>
4704 <li><a href="#index-premoveBlack_002c-option-359">premoveBlack, option</a>: <a href="#ICS-options">ICS options</a></li>
4705 <li><a href="#index-premoveBlackText_002c-option-361">premoveBlackText, option</a>: <a href="#ICS-options">ICS options</a></li>
4706 <li><a href="#index-premoveHighlightColor_002c-option-519">premoveHighlightColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4707 <li><a href="#index-premoveWhite_002c-option-357">premoveWhite, option</a>: <a href="#ICS-options">ICS options</a></li>
4708 <li><a href="#index-premoveWhiteText_002c-option-360">premoveWhiteText, option</a>: <a href="#ICS-options">ICS options</a></li>
4709 <li><a href="#index-prewhite_002c-option-356">prewhite, option</a>: <a href="#ICS-options">ICS options</a></li>
4710 <li><a href="#index-Problems-605">Problems</a>: <a href="#Problems">Problems</a></li>
4711 <li><a href="#index-queen_002c-option-453">queen, option</a>: <a href="#User-interface-options">User interface options</a></li>
4712 <li><a href="#index-Quiet-Play_002c-Menu-Item-137">Quiet Play, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4713 <li><a href="#index-quiet_002c-option-362">quiet, option</a>: <a href="#ICS-options">ICS options</a></li>
4714 <li><a href="#index-quietPlay_002c-option-363">quietPlay, option</a>: <a href="#ICS-options">ICS options</a></li>
4715 <li><a href="#index-recentEngineList_002c-option-443">recentEngineList, option</a>: <a href="#User-interface-options">User interface options</a></li>
4716 <li><a href="#index-recentEngines_002c-option-442">recentEngines, option</a>: <a href="#User-interface-options">User interface options</a></li>
4717 <li><a href="#index-Recently-Used-Engines_002c-In-Menu-94">Recently Used Engines, In Menu</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4718 <li><a href="#index-Reload-CMail-Message_002c-Menu-Item-19">Reload CMail Message, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4719 <li><a href="#index-Reload-Same-Game_002c-Menu-Item-192">Reload Same Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
4720 <li><a href="#index-Reload-Same-Position_002c-Menu-Item-193">Reload Same Position, Menu Item</a>: <a href="#Keys">Keys</a></li>
4721 <li><a href="#index-remoteShell_002c-option-571">remoteShell, option</a>: <a href="#Other-options">Other options</a></li>
4722 <li><a href="#index-remoteUser_002c-option-573">remoteUser, option</a>: <a href="#Other-options">Other options</a></li>
4723 <li><a href="#index-Replace-Engine_002c-Menu-Item-164">Replace Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4724 <li><a href="#index-Reporting-bugs-604">Reporting bugs</a>: <a href="#Problems">Problems</a></li>
4725 <li><a href="#index-Reporting-problems-606">Reporting problems</a>: <a href="#Problems">Problems</a></li>
4726 <li><a href="#index-Resign_002c-Menu-Item-77">Resign, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4727 <li><a href="#index-resource-name_002c-option-435">resource name, option</a>: <a href="#User-interface-options">User interface options</a></li>
4728 <li><a href="#index-results_002c-option-305">results, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4729 <li><a href="#index-Retract-Move_002c-Menu-Item-93">Retract Move, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4730 <li><a href="#index-reuse_002c-option-247">reuse, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4731 <li><a href="#index-reuse2_002c-option-249">reuse2, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4732 <li><a href="#index-reuseFirst_002c-option-248">reuseFirst, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4733 <li><a href="#index-reuseSecond_002c-option-250">reuseSecond, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4734 <li><a href="#index-Revert_002c-Menu-Item-33">Revert, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4735 <li><a href="#index-Rewind-Index-after_002c-Menu-Item-162">Rewind Index after, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4736 <li><a href="#index-ringBellAfterMoves_002c-option-448">ringBellAfterMoves, option</a>: <a href="#User-interface-options">User interface options</a></li>
4737 <li><a href="#index-rsh_002c-option-570">rsh, option</a>: <a href="#Other-options">Other options</a></li>
4738 <li><a href="#index-ruleMoves_002c-option-548">ruleMoves, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4739 <li><a href="#index-ruser_002c-option-572">ruser, option</a>: <a href="#Other-options">Other options</a></li>
4740 <li><a href="#index-sameColorGames_002c-option-223">sameColorGames, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4741 <li><a href="#index-Save-Game-Options_002c-Menu-Item-177">Save Game Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4742 <li><a href="#index-Save-Game_002c-Menu-Item-14">Save Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4743 <li><a href="#index-Save-Games-as-Book_002c-Menu-Item-17">Save Games as Book, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4744 <li><a href="#index-Save-Position_002c-Menu-Item-15">Save Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4745 <li><a href="#index-Save-Selected-Games-16">Save Selected Games</a>: <a href="#File-Menu">File Menu</a></li>
4746 <li><a href="#index-Save-Settings-Now_002c-Menu-Item-180">Save Settings Now, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4747 <li><a href="#index-Save-Settings-on-Exit_002c-Menu-Item-181">Save Settings on Exit, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4748 <li><a href="#index-Save-Tourney-Games_002c-Menu-Item-157">Save Tourney Games, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4749 <li><a href="#index-saveGameFile_002c-option-408">saveGameFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4750 <li><a href="#index-saveOutOfBookInfo_002c-option-421">saveOutOfBookInfo, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4751 <li><a href="#index-savePositionFile_002c-option-417">savePositionFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4752 <li><a href="#index-saveSettingsFile_002c-option-425">saveSettingsFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4753 <li><a href="#index-saveSettingsOnExit_002c-option-429">saveSettingsOnExit, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4754 <li><a href="#index-Scores-in-Move-List_002c-Menu-Item-117">Scores in Move List, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4755 <li><a href="#index-scoreWhite_002c-option-539">scoreWhite, option</a>: <a href="#User-interface-options">User interface options</a></li>
4756 <li><a href="#index-scp_002c-option-226">scp, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4757 <li><a href="#index-sd_002c-option-208">sd, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4758 <li><a href="#index-se_002c-option-230">se, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4759 <li><a href="#index-Search-mode_002c-Menu-Item-171">Search mode, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4760 <li><a href="#index-searchDepth_002c-option-209">searchDepth, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4761 <li><a href="#index-searchMode_002c-option-577">searchMode, option</a>: <a href="#Other-options">Other options</a></li>
4762 <li><a href="#index-searchTime_002c-option-207">searchTime, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4763 <li><a href="#index-secondChessProgram_002c-option-227">secondChessProgram, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4764 <li><a href="#index-secondComputerString_002c-option-246">secondComputerString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4765 <li><a href="#index-secondDirectory_002c-option-241">secondDirectory, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4766 <li><a href="#index-secondEngine_002c-option-231">secondEngine, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4767 <li><a href="#index-secondHasOwnBookUCI_002c-option-279">secondHasOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4768 <li><a href="#index-secondHost_002c-option-237">secondHost, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4769 <li><a href="#index-secondInitString_002c-option-244">secondInitString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4770 <li><a href="#index-secondIsUCI_002c-option-266">secondIsUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4771 <li><a href="#index-secondLogo_002c-option-439">secondLogo, option</a>: <a href="#User-interface-options">User interface options</a></li>
4772 <li><a href="#index-secondNeedsNoncompliantFEN_002c-option-259">secondNeedsNoncompliantFEN, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4773 <li><a href="#index-secondNPS_002c-option-211">secondNPS, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4774 <li><a href="#index-secondOptions_002c-option-257">secondOptions, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4775 <li><a href="#index-secondPgnName_002c-option-287">secondPgnName, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4776 <li><a href="#index-secondProtocolVersion_002c-option-252">secondProtocolVersion, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4777 <li><a href="#index-secondScoreAbs_002c-option-254">secondScoreAbs, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4778 <li><a href="#index-secondTimeOdds_002c-option-213">secondTimeOdds, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4779 <li><a href="#index-secondXBook_002c-option-281">secondXBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4780 <li><a href="#index-seedBase_002c-option-312">seedBase, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4781 <li><a href="#index-Seek-Graph_002c-Menu-Item-138">Seek Graph, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4782 <li><a href="#index-seekGraph_002c-option-342">seekGraph, option</a>: <a href="#ICS-options">ICS options</a></li>
4783 <li><a href="#index-Select-Engine_002c-Menu-Item-152">Select Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4784 <li><a href="#index-set_002c-ICS-command-594">set, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4785 <li><a href="#index-Settings_002c-Engine-262">Settings, Engine</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4786 <li><a href="#index-SettingsFile_002c-option-426">SettingsFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4787 <li><a href="#index-sg_002c-option-343">sg, option</a>: <a href="#ICS-options">ICS options</a></li>
4788 <li><a href="#index-sgf_002c-option-407">sgf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4789 <li><a href="#index-sh_002c-option-236">sh, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4790 <li><a href="#index-Shortcut-keys-188">Shortcut keys</a>: <a href="#Keys">Keys</a></li>
4791 <li><a href="#index-Show-Coords_002c-Menu-Item-118">Show Coords, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4792 <li><a href="#index-Show-Engine-Output_002c-Menu-Item-47">Show Engine Output, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4793 <li><a href="#index-Show-Evaluation-Graph_002c-Menu-Item-49">Show Evaluation Graph, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4794 <li><a href="#index-Show-Game-List_002c-Menu-Item-50">Show Game List, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4795 <li><a href="#index-Show-Last-Move_002c-Shortcut-Key-189">Show Last Move, Shortcut Key</a>: <a href="#Keys">Keys</a></li>
4796 <li><a href="#index-Show-Move-History_002c-Menu-Item-48">Show Move History, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4797 <li><a href="#index-Show-Target-Squares_002c-Menu-Item-119">Show Target Squares, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4798 <li><a href="#index-showButtonBar_002c-option-473">showButtonBar, option</a>: <a href="#User-interface-options">User interface options</a></li>
4799 <li><a href="#index-showCoords_002c-option-463">showCoords, option</a>: <a href="#User-interface-options">User interface options</a></li>
4800 <li><a href="#index-showEvalInMoveHistory_002c-option-493">showEvalInMoveHistory, option</a>: <a href="#User-interface-options">User interface options</a></li>
4801 <li><a href="#index-showTargetSquares_002c-option-478">showTargetSquares, option</a>: <a href="#User-interface-options">User interface options</a></li>
4802 <li><a href="#index-showThinking_002c-option-216">showThinking, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4803 <li><a href="#index-shuffleOpenings_002c-option-260">shuffleOpenings, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4804 <li><a href="#index-size_002c-option-458">size, option</a>: <a href="#User-interface-options">User interface options</a></li>
4805 <li><a href="#index-sn_002c-option-289">sn, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4806 <li><a href="#index-sNoOwnBookUCI_002c-option-277">sNoOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4807 <li><a href="#index-Sound-Options_002c-Menu-Item-179">Sound Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4808 <li><a href="#index-soundChallenge_002c-option-390">soundChallenge, option</a>: <a href="#ICS-options">ICS options</a></li>
4809 <li><a href="#index-soundChannel_002c-option-386">soundChannel, option</a>: <a href="#ICS-options">ICS options</a></li>
4810 <li><a href="#index-soundChannel1_002c-option-387">soundChannel1, option</a>: <a href="#ICS-options">ICS options</a></li>
4811 <li><a href="#index-soundCShout_002c-option-385">soundCShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4812 <li><a href="#index-soundDirectory_002c-option-381">soundDirectory, option</a>: <a href="#ICS-options">ICS options</a></li>
4813 <li><a href="#index-soundIcsAlarm_002c-option-394">soundIcsAlarm, option</a>: <a href="#ICS-options">ICS options</a></li>
4814 <li><a href="#index-soundIcsDraw_002c-option-397">soundIcsDraw, option</a>: <a href="#ICS-options">ICS options</a></li>
4815 <li><a href="#index-soundIcsLoss_002c-option-396">soundIcsLoss, option</a>: <a href="#ICS-options">ICS options</a></li>
4816 <li><a href="#index-soundIcsUnfinished_002c-option-398">soundIcsUnfinished, option</a>: <a href="#ICS-options">ICS options</a></li>
4817 <li><a href="#index-soundIcsWin_002c-option-395">soundIcsWin, option</a>: <a href="#ICS-options">ICS options</a></li>
4818 <li><a href="#index-soundKibitz_002c-option-388">soundKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
4819 <li><a href="#index-soundMove_002c-option-393">soundMove, option</a>: <a href="#ICS-options">ICS options</a></li>
4820 <li><a href="#index-soundProgram_002c-option-379">soundProgram, option</a>: <a href="#ICS-options">ICS options</a></li>
4821 <li><a href="#index-soundRequest_002c-option-391">soundRequest, option</a>: <a href="#ICS-options">ICS options</a></li>
4822 <li><a href="#index-Sounds-380">Sounds</a>: <a href="#ICS-options">ICS options</a></li>
4823 <li><a href="#index-soundSeek_002c-option-392">soundSeek, option</a>: <a href="#ICS-options">ICS options</a></li>
4824 <li><a href="#index-soundShout_002c-option-383">soundShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4825 <li><a href="#index-soundSShout_002c-option-384">soundSShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4826 <li><a href="#index-soundTell_002c-option-389">soundTell, option</a>: <a href="#ICS-options">ICS options</a></li>
4827 <li><a href="#index-spf_002c-option-416">spf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4828 <li><a href="#index-sSAN_002c-option-492">sSAN, option</a>: <a href="#User-interface-options">User interface options</a></li>
4829 <li><a href="#index-st_002c-option-206">st, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4830 <li><a href="#index-Stop-Examining_002c-Menu-Item-79">Stop Examining, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4831 <li><a href="#index-Stop-Observing_002c-Menu-Item-78">Stop Observing, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4832 <li><a href="#index-sUCCI_002c-option-268">sUCCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4833 <li><a href="#index-sUCI_002c-option-264">sUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4834 <li><a href="#index-sUSI_002c-option-270">sUSI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4835 <li><a href="#index-sweepPromotion_002c-option-455">sweepPromotion, option</a>: <a href="#User-interface-options">User interface options</a></li>
4836 <li><a href="#index-Sync-after-cycle_002c-Menu-Item-151">Sync after cycle, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4837 <li><a href="#index-Sync-after-round_002c-Menu-Item-150">Sync after round, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4838 <li><a href="#index-syncAfterCycle_002c-option-311">syncAfterCycle, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4839 <li><a href="#index-syncAfterRound_002c-option-310">syncAfterRound, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4840 <li><a href="#index-Tags_002c-Menu-Item-51">Tags, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4841 <li><a href="#index-tagsFont_002c-option-500">tagsFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4842 <li><a href="#index-tc_002c-option-198">tc, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4843 <li><a href="#index-td_002c-option-405">td, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4844 <li><a href="#index-telnet_002c-option-323">telnet, option</a>: <a href="#ICS-options">ICS options</a></li>
4845 <li><a href="#index-telnetProgram_002c-option-325">telnetProgram, option</a>: <a href="#ICS-options">ICS options</a></li>
4846 <li><a href="#index-Test-Legality_002c-Menu-Item-120">Test Legality, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4847 <li><a href="#index-testClaims_002c-option-545">testClaims, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4848 <li><a href="#index-testLegality_002c-option-457">testLegality, option</a>: <a href="#User-interface-options">User interface options</a></li>
4849 <li><a href="#index-tf_002c-option-298">tf, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4850 <li><a href="#index-thinking_002c-option-215">thinking, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4851 <li><a href="#index-Time-Control_002c-Menu-Item-125">Time Control, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4852 <li><a href="#index-timeControl_002c-option-199">timeControl, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4853 <li><a href="#index-timeDelay_002c-option-406">timeDelay, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4854 <li><a href="#index-timeIncrement_002c-option-203">timeIncrement, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4855 <li><a href="#index-timeOddsMode_002c-option-214">timeOddsMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4856 <li><a href="#index-title_002c-option-470">title, option</a>: <a href="#User-interface-options">User interface options</a></li>
4857 <li><a href="#index-titleInWindow_002c-option-471">titleInWindow, option</a>: <a href="#User-interface-options">User interface options</a></li>
4858 <li><a href="#index-Tournament-file_002c-Menu-item-149">Tournament file, Menu item</a>: <a href="#Options-Menu">Options Menu</a></li>
4859 <li><a href="#index-Tournament-Options-294">Tournament Options</a>: <a href="#Tournament-options">Tournament options</a></li>
4860 <li><a href="#index-Tourney-participants_002c-Menu-Item-153">Tourney participants, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4861 <li><a href="#index-Tourney-type_002c-Menu-Item-154">Tourney type, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4862 <li><a href="#index-tourneyCycles_002c-option-303">tourneyCycles, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4863 <li><a href="#index-tourneyFile_002c-option-299">tourneyFile, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4864 <li><a href="#index-tourneyOptions_002c-option-554">tourneyOptions, option</a>: <a href="#Other-options">Other options</a></li>
4865 <li><a href="#index-tourneyType_002c-option-301">tourneyType, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4866 <li><a href="#index-Training_002c-Menu-Item-65">Training, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4867 <li><a href="#index-trivialDraws_002c-option-547">trivialDraws, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4868 <li><a href="#index-trueColors_002c-option-521">trueColors, option</a>: <a href="#User-interface-options">User interface options</a></li>
4869 <li><a href="#index-Truncate-Game_002c-Menu-Item-35">Truncate Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4870 <li><a href="#index-tt_002c-option-300">tt, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4871 <li><a href="#index-Two-Machines_002c-Menu-Item-61">Two Machines, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4872 <li><a href="#index-Upgrade-Engine_002c-Menu-Item-165">Upgrade Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4873 <li><a href="#index-Upload-to-Examine_002c-Menu-Item-80">Upload to Examine, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4874 <li><a href="#index-useBoardTexture_002c-option-522">useBoardTexture, option</a>: <a href="#User-interface-options">User interface options</a></li>
4875 <li><a href="#index-usePolyglotBook_002c-option-274">usePolyglotBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4876 <li><a href="#index-User-interface-options-430">User interface options</a>: <a href="#User-interface-options">User interface options</a></li>
4877 <li><a href="#index-userName_002c-option-574">userName, option</a>: <a href="#Other-options">Other options</a></li>
4878 <li><a href="#index-useTelnet_002c-option-324">useTelnet, option</a>: <a href="#ICS-options">ICS options</a></li>
4879 <li><a href="#index-uxiAdapter_002c-option-272">uxiAdapter, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4880 <li><a href="#index-variant_002c-option-557">variant, option</a>: <a href="#Other-options">Other options</a></li>
4881 <li><a href="#index-variations_002c-option-536">variations, option</a>: <a href="#User-interface-options">User interface options</a></li>
4882 <li><a href="#index-vars_002c-ICS-command-593">vars, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4883 <li><a href="#index-View-Menu-45">View Menu</a>: <a href="#View-Menu">View Menu</a></li>
4884 <li><a href="#index-viewer_002c-option-552">viewer, option</a>: <a href="#Other-options">Other options</a></li>
4885 <li><a href="#index-viewerOptions_002c-option-553">viewerOptions, option</a>: <a href="#Other-options">Other options</a></li>
4886 <li><a href="#index-whitePieceColor_002c-option-514">whitePieceColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4887 <li><a href="#index-who_002c-ICS-command-585">who, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4888 <li><a href="#index-xflash_002c-option-482">xflash, option</a>: <a href="#User-interface-options">User interface options</a></li>
4889 <li><a href="#index-year_002c-Menu-Item-170">year, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4890 <li><a href="#index-Zoom-factor-in-Evaluation-Graph_002c-Menu-Item-124">Zoom factor in Evaluation Graph, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4892 <div class="contents">
4893 <h2>Table of Contents</h2>
4895 <li><a name="toc_Top" href="#Top">Introduction</a>
4896 <li><a name="toc_Major-modes" href="#Major-modes">1 Major modes</a>
4897 <li><a name="toc_Basic-operation" href="#Basic-operation">2 Basic operation</a>
4898 <li><a name="toc_Menus" href="#Menus">3 Menus, buttons, and keys</a>
4900 <li><a href="#File-Menu">3.1 File Menu</a>
4901 <li><a href="#Edit-Menu">3.2 Edit Menu</a>
4902 <li><a href="#View-Menu">3.3 View Menu</a>
4903 <li><a href="#Mode-Menu">3.4 Mode Menu</a>
4904 <li><a href="#Action-Menu">3.5 Action Menu</a>
4905 <li><a href="#Engine-Menu">3.6 Engine Menu</a>
4906 <li><a href="#Options-Menu">3.7 Options Menu</a>
4908 <li><a href="#Options-Menu">3.7.1 General Options</a>
4909 <li><a href="#Options-Menu">3.7.2 Time Control</a>
4910 <li><a href="#Options-Menu">3.7.3 Common Engine</a>
4911 <li><a href="#Options-Menu">3.7.4 Adjudications</a>
4912 <li><a href="#Options-Menu">3.7.5 ICS Options</a>
4913 <li><a href="#Options-Menu">3.7.6 Match Options</a>
4914 <li><a href="#Options-Menu">3.7.7 Load Game Options</a>
4915 <li><a href="#Options-Menu">3.7.8 Save Game Options</a>
4916 <li><a href="#Options-Menu">3.7.9 Game List</a>
4917 <li><a href="#Options-Menu">3.7.10 Sound Options</a>
4918 <li><a href="#Options-Menu">3.7.11 Save Settings Now</a>
4919 <li><a href="#Options-Menu">3.7.12 Save Settings on Exit</a>
4921 <li><a href="#Help-Menu">3.8 Help Menu</a>
4922 <li><a href="#Keys">3.9 Other Shortcut Keys</a>
4924 <li><a name="toc_Options" href="#Options">4 Options</a>
4926 <li><a href="#Chess-engine-options">4.1 Chess Engine Options</a>
4927 <li><a href="#UCI-_002b-WB-Engine-Settings">4.2 UCI + WB Engine Settings</a>
4928 <li><a href="#Tournament-options">4.3 Tournament options</a>
4929 <li><a href="#ICS-options">4.4 ICS options</a>
4930 <li><a href="#Load-and-Save-options">4.5 Load and Save options</a>
4931 <li><a href="#User-interface-options">4.6 User interface options</a>
4932 <li><a href="#Adjudication-Options">4.7 Adjudication Options</a>
4933 <li><a href="#Other-options">4.8 Other options</a>
4935 <li><a name="toc_Chess-Servers" href="#Chess-Servers">5 Chess Servers</a>
4936 <li><a name="toc_Firewalls" href="#Firewalls">6 Firewalls</a>
4937 <li><a name="toc_Environment" href="#Environment">7 Environment variables</a>
4938 <li><a name="toc_Limitations" href="#Limitations">8 Limitations and known bugs</a>
4939 <li><a name="toc_Problems" href="#Problems">9 Reporting problems</a>
4940 <li><a name="toc_Contributors" href="#Contributors">10 Authors and contributors</a>
4941 <li><a name="toc_CMail" href="#CMail">11 CMail</a>
4943 <li><a href="#CMail-options">11.1 CMail options</a>
4944 <li><a href="#CMail-game">11.2 Starting a CMail Game</a>
4945 <li><a href="#CMail-answer">11.3 Answering a Move</a>
4946 <li><a href="#CMail-multi">11.4 Multi-Game Messages</a>
4947 <li><a href="#CMail-completion">11.5 Completing a Game</a>
4948 <li><a href="#CMail-trouble">11.6 Known CMail Problems</a>
4950 <li><a name="toc_Other-programs" href="#Other-programs">12 Other programs you can use with XBoard</a>
4952 <li><a href="#GNU-Chess">12.1 GNU Chess</a>
4953 <li><a href="#Fairy_002dMax">12.2 Fairy-Max</a>
4954 <li><a href="#HoiChess">12.3 HoiChess</a>
4955 <li><a href="#Crafty">12.4 Crafty</a>
4957 <li><a name="toc_Copyright" href="#Copyright">Copyright</a>
4958 <li><a name="toc_Copying" href="#Copying">GNU GENERAL PUBLIC LICENSE</a>
4959 <li><a name="toc_Index" href="#Index">Index</a>
projects / xboard.git / blob