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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 4.5.0 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="#Menus">Menus</a>: Menus, buttons, and keys.
46 <li><a accesskey="3" href="#Options">Options</a>: Command options supported by XBoard.
47 <li><a accesskey="4" href="#Chess-Servers">Chess Servers</a>: Using XBoard with an Internet Chess Server (ICS).
48 <li><a accesskey="5" href="#Firewalls">Firewalls</a>: Connecting to a chess server through a firewall.
49 <li><a accesskey="6" href="#Environment">Environment</a>: Environment variables.
50 <li><a accesskey="7" href="#Limitations">Limitations</a>: Known limitations and/or bugs.
51 <li><a accesskey="8" href="#Problems">Problems</a>: How and where to report any problems you run into.
52 <li><a accesskey="9" href="#Contributors">Contributors</a>: People who have helped developing XBoard.
53 <li><a href="#CMail">CMail</a>: Using XBoard for electronic correspondence chess.
54 <li><a href="#Other-programs">Other programs</a>: Other programs you can use with XBoard.
56 <li><a href="#Copyright">Copyright</a>: Copyright notice for this manual.
57 <li><a href="#Copying">Copying</a>: The GNU General Public License.
59 <li><a href="#Index">Index</a>: Index of concepts and symbol names.
63 <a name="Major-modes"></a>
65 Next: <a rel="next" accesskey="n" href="#Menus">Menus</a>,
66 Previous: <a rel="previous" accesskey="p" href="#Top">Top</a>,
67 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
71 <h2 class="chapter">1 Major modes</h2>
73 <p><a name="index-Major-modes-2"></a>
74 XBoard always runs in one of four major modes. You select the
75 major mode from the command line when you start up XBoard.
78 <dt>xboard [options]<dd>As an interface to GNU Chess or another chess engine running on your
79 machine, XBoard lets you play a game against the machine,
80 set up arbitrary positions, force variations, watch a game between two
81 chess engines, interactively analyze your stored games or set up and
82 analyze arbitrary positions. (Note: Not all chess engines support
84 <br><dt>xboard -ics -icshost hostname [options]<dd>As Internet Chess Server (ICS) interface, XBoard
85 lets you play against other ICS users, observe games
86 they are playing, or review games that have recently finished. Most
87 of the ICS "wild" chess variants are supported, including bughouse.
88 <br><dt>xboard -ncp [options]<dd>XBoard can also be used simply
89 as an electronic chessboard to play through games. It will read and
90 write game files and allow you to play through variations
91 manually. You can use it to browse games off the net or review games
92 you have saved. These features are also available in the other modes.
93 <br><dt>|pxboard<dd>If you want to pipe games into XBoard, use the supplied shell
94 script <samp><span class="file">pxboard</span></samp>. For example, from the news reader <samp><span class="file">xrn</span></samp>,
95 find a message with one or more games in it, click the Save button,
96 and type ‘<samp><span class="samp">|pxboard</span></samp>’ as the file name.
97 <br><dt>cmail [options]<dd>As an interface to electronic mail correspondence chess, XBoard
98 works with the cmail program. See <a href="#CMail">CMail</a> below for
105 Next: <a rel="next" accesskey="n" href="#Options">Options</a>,
106 Previous: <a rel="previous" accesskey="p" href="#Major-modes">Major modes</a>,
107 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
111 <h2 class="chapter">2 Menus, buttons, and keys</h2>
113 <p><a name="index-Menus-3"></a>
114 To move a piece, you can drag it with the left mouse button, or you
115 can click the left mouse button once on the piece, then once more on
116 the destination square. To drop a new piece on a square (when
117 applicable), press the middle or the right mouse button over the
118 square and select from the pop-up menu. In cases where you can drop
119 either a white or black piece, use the middle button (or shift+right)
120 for white and the right button (or shift+middle) for black. When you
121 are playing a bughouse game on an Internet Chess Server, a list of the
122 off-board pieces that each player has available is shown in the window
123 title after the player's name; in addition, the piece menus show the
124 number of pieces available of each type. From version 4.3.14 on, it is
125 also possible in crazyhouse, bughouse or shogi to drag and drop pieces
126 to the board from the holdings squares displayed next to the board.
127 This latter method for dropping pieces during a game is preferred,
128 and the piece-drop menu is now deprecated (except for editing a position).
129 Although the old behavior can still be selected through a command-line
130 option, the default function of the right mouse button is to display
131 the position the chess program thinks it will end up in,
132 while moving the mouse vertically with this button pressed will step
133 through the principal variation to show how this position will be
135 Lines of play displayed in the engine-output window an similarly
136 be played out on the board, by right-clicking on them.
138 <p>When connected to an ICS, it is possible to call up a graphical
139 representation of players seeking a game in stead of the chess board,
140 when the latter is not in use
141 (i.e. when you are not playing or observing).
142 Left-clicking the display area will switch between this 'seek graph'
144 Hovering the mouse pointer over a dot will show the details of the
145 seek ad in the message field above the board.
146 Left-clicking the dot will challenge that player.
147 Right-clicking a dot will 'push it to the back',
148 to reveal any dots that were hidden behind it.
149 Right-clicking off dots will refresh the graph.
151 <p>Most other XBoard commands are available from the menu bar. The most
152 frequently used commands also have shortcut keys or on-screen buttons.
153 Some rarely used parameters can only be set through options on the
154 command line used to invoke XBoard.
156 <p>XBoard uses a settings file, in which it can remember any changes to
157 the settings that are made through menus or command-line options,
158 so they will still apply when you restart XBoard for another session.
159 The settings can be saved into this file automatically when XBoard exits,
160 or on explicit request of the user.
161 The default name for the settings file is /etc/xboard/xboard.conf,
162 but in a standard install this file is only used as a master settings
163 file that determines the system-wide default settings,
164 and defers reading and writing of user settings to a user-specific
165 file like ~/.xboardrc in the user's home directory.
167 <p>When XBoard is iconized, its graphical icon is a white knight if
168 it is White's turn to move, a black knight if it is Black's turn. See
169 Iconize in <a href="#Keys">Keys</a> below if you have problems getting this
173 <li><a accesskey="1" href="#File-Menu">File Menu</a>: Accessing external games and positions.
174 <li><a accesskey="2" href="#Edit-Menu">Edit Menu</a>: Altering games, positions, PGN tags or comments.
175 <li><a accesskey="3" href="#View-Menu">View Menu</a>: Controlling XBoard's shape and looks.
176 <li><a accesskey="4" href="#Mode-Menu">Mode Menu</a>: Selecting XBoard's mode.
177 <li><a accesskey="5" href="#Action-Menu">Action Menu</a>: Talking to the chess engine or ICS opponents.
178 <li><a accesskey="6" href="#Engine-Menu">Engine Menu</a>: Controlling settings and actions of the engine(s).
179 <li><a accesskey="7" href="#Options-Menu">Options Menu</a>: User preferences.
180 <li><a accesskey="8" href="#Help-Menu">Help Menu</a>: Getting help.
181 <li><a accesskey="9" href="#Keys">Keys</a>: Other shortcut keys.
185 <a name="File-Menu"></a>
187 Next: <a rel="next" accesskey="n" href="#Edit-Menu">Edit Menu</a>,
188 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
192 <h3 class="section">2.1 File Menu</h3>
194 <p><a name="index-File-Menu-4"></a><a name="index-Menu_002c-File-5"></a>
196 <dt>New Game<dd><a name="index-New-Game_002c-Menu-Item-6"></a>Resets XBoard and the chess engine to the beginning of a new chess
197 game. The <kbd>Ctrl-N</kbd> key is a keyboard equivalent. In Internet Chess
198 Server mode, clears the current state of XBoard, then
199 resynchronizes with the ICS by sending a refresh command. If you want to
200 stop playing, observing, or examining an ICS game, use an
201 appropriate command from the Action menu, not ‘<samp><span class="samp">New Game</span></samp>’.
202 See <a href="#Action-Menu">Action Menu</a>.
203 <br><dt>New Shuffle Game<dd><a name="index-New-Shuffle-Game_002c-Menu-Item-7"></a>Similar to ‘<samp><span class="samp">New Game</span></samp>’, but allows you to specify a particular initial position
204 (according to a standardized numbering system)
205 in chess variants which use randomized opening positions (e.g. Chess960).
206 The selected opening position will persistently be chosen on any following
207 New Game command until you use this menu to select another. Selecting
208 position number -1 will produce a newly randomized position on any new game.
209 Using this menu item in variants that normally do not shuffle their opening position
210 does cause these variants to become shuffle variants until you use the
211 ‘<samp><span class="samp">New Shuffle Game</span></samp>’ menu to explicitly switch the randomization off,
212 or select a new variant.
213 <br><dt>New Variant<dd><a name="index-New-variant_002c-Menu-Item-8"></a>Allows you to select a new chess variant in non-ICS mode.
214 (In ICS play, the ICS is responsible for deciding which variant will be played,
215 and XBoard adapts automatically.) The shifted <kbd>Alt+V</kbd> key is a
216 keyboard equivalent. If you play with an engine, the engine must
217 be able to play the selected variant, or the command will be ignored.
218 XBoard supports all major variants, such as xiangqi, shogi, chess, chess960,
219 Capablanca Chess, shatranj, crazyhouse, bughouse.
220 (But not every board size has built-in bitmaps for un-orthodox pieces!)
221 <br><dt>Load Game<dd><a name="index-Load-Game_002c-Menu-Item-9"></a>Plays a game from a record file. The <kbd>Ctrl-O</kbd> key is a keyboard equivalent.
222 A pop-up dialog prompts you for the file name. If the file contains more
223 than one game, a second pop-up dialog
224 displays a list of games (with information drawn from their PGN tags, if
225 any), and you can select the one you want. Alternatively, you can load the
226 Nth game in the file directly, by typing the number <kbd>N</kbd> after the
227 file name, separated by a space.
229 <p>The game file parser will accept PGN (portable game notation),
230 or in fact almost any file that contains moves in algebraic
232 Notation of the form ‘<samp><span class="samp">P@f7</span></samp>’
233 is accepted for piece-drops in bughouse games;
234 this is a nonstandard extension to PGN.
235 If the file includes a PGN position (FEN tag), or an old-style
236 XBoard position diagram bracketed by ‘<samp><span class="samp">[--</span></samp>’ and ‘<samp><span class="samp">--]</span></samp>’
237 before the first move, the game starts from that position. Text
238 enclosed in parentheses, square brackets, or curly braces is assumed to
239 be commentary and is displayed in a pop-up window. Any other
240 text in the file is ignored. PGN variations (enclosed in
241 parentheses) also are treated as comments;
242 however, if you rights-click them in the comment window,
243 XBoard will shelve the current line, and load the the selected variation,
244 so you can step through it.
245 You can later revert to the previous line with the ‘<samp><span class="samp">Revert</span></samp>’ command.
246 This way you can walk quite complex varation trees with XBoard.
247 The nonstandard PGN tag [Variant "varname"] functions similarly to
248 the -variant command-line option (see below), allowing games in certain chess
249 variants to be loaded.
250 Note that it must appear before any FEN tag for XBoard to recognize
251 variant FENs appropriately.
252 There is also a heuristic to
253 recognize chess variants from the Event tag, by looking for the strings
254 that the Internet Chess Servers put there when saving variant ("wild") games.
255 <br><dt>Load Position<dd><a name="index-Load-Position_002c-Menu-Item-10"></a>Sets up a position from a position file. A pop-up dialog prompts
256 you for the file name. The shifted <kbd>Ctrl-O</kbd> key is a keyboard
257 equivalent. If the file contains more than one saved
258 position, and you want to load the Nth one, type the number N
259 after the file name, separated by a space. Position files must
260 be in FEN (Forsythe-Edwards notation), or in the format that the
261 Save Position command writes when oldSaveStyle is turned on.
262 <br><dt>Load Next Position<dd><a name="index-Load-Next-Position_002c-Menu-Item-11"></a>Loads the next position from the last position file you loaded.
263 The shifted <kbd>PgDn</kbd> key is a keyboard equivalent.
264 <br><dt>Load Previous Position<dd><a name="index-Load-Previous-Position_002c-Menu-Item-12"></a>Loads the previous position from the last position file you
265 loaded. The shifted <kbd>PgUp</kbd> key is a keyboard equivalent.
266 Not available if the last position was loaded from a pipe.
267 <br><dt>Save Game<dd><a name="index-Save-Game_002c-Menu-Item-13"></a>Appends a record of the current game to a file.
268 The <kbd>Ctrl-S</kbd> key is a keyboard equivalent.
270 prompts you for the file name. If the game did not begin with
271 the standard starting position, the game file includes the
272 starting position used. Games are saved in the PGN (portable
273 game notation) format, unless the oldSaveStyle option is true,
274 in which case they are saved in an older format that is specific
275 to XBoard. Both formats are human-readable, and both can be
276 read back by the ‘<samp><span class="samp">Load Game</span></samp>’ command.
277 Notation of the form ‘<samp><span class="samp">P@f7</span></samp>’
278 is accepted for piece-drops in bughouse games;
279 this is a nonstandard extension to PGN.
280 <br><dt>Save Position<dd><a name="index-Save-Position_002c-Menu-Item-14"></a>Appends a diagram of the current position to a file.
281 The shifted <kbd>Ctrl+S</kbd> key is a keyboard equivalent.
282 A pop-up dialog prompts you for the file name. Positions are saved in
283 FEN (Forsythe-Edwards notation) format unless the <code>oldSaveStyle</code>
284 option is true, in which case they are saved in an older,
285 human-readable format that is specific to XBoard. Both formats
286 can be read back by the ‘<samp><span class="samp">Load Position</span></samp>’ command.
287 <br><dt>Mail Move<dt>Reload CMail Message<dd><a name="index-Mail-Move_002c-Menu-Item-15"></a><a name="index-Reload-CMail-Message_002c-Menu-Item-16"></a>See <a href="#CMail">CMail</a>.
288 <br><dt>Exit<dd><a name="index-Exit_002c-Menu-Item-17"></a>Exits from XBoard. The <kbd>Ctrl-Q</kbd> key is a keyboard equivalent.
292 <a name="Edit-Menu"></a>
294 Next: <a rel="next" accesskey="n" href="#View-Menu">View Menu</a>,
295 Previous: <a rel="previous" accesskey="p" href="#File-Menu">File Menu</a>,
296 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
300 <h3 class="section">2.2 Edit Menu</h3>
302 <p><a name="index-Menu_002c-Edit-18"></a><a name="index-Edit-Menu-19"></a>
304 <dt>Copy Game<dd><a name="index-Copy-Game_002c-Menu-Item-20"></a>Copies a record of the current game to an internal clipboard in PGN
305 format and sets the X selection to the game text. The <kbd>Ctrl-C</kbd>
306 key is a keyboard equivalent. The game can be
307 pasted to another application (such as a text editor or another copy
308 of XBoard) using that application's paste command. In many X
309 applications, such as xterm and emacs, the middle mouse button can be
310 used for pasting; in XBoard, you must use the Paste Game command.
311 <br><dt>Copy Position<dd><a name="index-Copy-Position_002c-Menu-Item-21"></a>Copies the current position to an internal clipboard in FEN format and
312 sets the X selection to the position text. The shifted <kbd>Ctrl-C</kbd> key
313 is a keyboard equivalent. The position can be pasted
314 to another application (such as a text editor or another copy of
315 XBoard) using that application's paste command. In many X
316 applications, such as xterm and emacs, the middle mouse button can be
317 used for pasting; in XBoard, you must use the Paste Position command.
318 <br><dt>Paste Game<dd><a name="index-Paste-Game_002c-Menu-Item-22"></a>Interprets the current X selection as a game record and loads it, as
319 with Load Game. The <kbd>Ctrl-V</kbd> key is a keyboard equivalent.
320 <br><dt>Paste Position<dd><a name="index-Paste-Position_002c-Menu-Item-23"></a>Interprets the current X selection as a FEN position and loads it, as
321 with Load Position. The shifted <kbd>Ctrl-V</kbd> key is a keyboard equivalent.
322 <br><dt>Edit Game<dd><a name="index-Edit-Game_002c-Menu-Item-24"></a>Allows you to make moves for both Black and White, and to change
323 moves after backing up with the ‘<samp><span class="samp">Backward</span></samp>’ command. The clocks do
324 not run. The <kbd>Ctrl-E</kbd> key is a keyboard equivalent.
326 <p>In chess engine mode, the chess engine continues to check moves for legality
327 but does not participate in the game. You can bring the chess engine
328 into the game by selecting ‘<samp><span class="samp">Machine White</span></samp>’, ‘<samp><span class="samp">Machine Black</span></samp>’,
329 or ‘<samp><span class="samp">Two Machines</span></samp>’.
331 <p>In ICS mode, the moves are not sent to the ICS: ‘<samp><span class="samp">Edit Game</span></samp>’ takes
332 XBoard out of ICS Client mode and lets you edit games locally.
333 If you want to edit games on ICS in a way that other ICS users
334 can see, use the ICS <kbd>examine</kbd> command or start an ICS match
336 <br><dt>Edit Position<dd><a name="index-Edit-Position_002c-Menu-Item-25"></a>Lets you set up an arbitrary board position.
337 The shifted <kbd>Ctrl-E</kbd> key is a keyboard equivalent.
338 Use mouse button 1 to drag pieces to new squares, or to delete a piece
339 by dragging it off the board or dragging an empty square on top of it.
340 To drop a new piece on a square, press mouse button 2 or 3 over the
341 square. This brings up a menu of white pieces (button 2) or
342 black pieces (button 3). Additional menu choices let you empty the
343 square or clear the board. You can set the side to play next by
344 clicking on the word White or Black at the top of the screen.
345 Selecting ‘<samp><span class="samp">Edit Position</span></samp>’ causes XBoard to discard
346 all remembered moves in the current game.
348 <p>In ICS mode, changes made to the position by ‘<samp><span class="samp">Edit Position</span></samp>’ are
349 not sent to the ICS: ‘<samp><span class="samp">Edit Position</span></samp>’ takes XBoard out of
350 ‘<samp><span class="samp">ICS Client</span></samp>’ mode and lets you edit positions locally. If you want to
351 edit positions on ICS in a way that other ICS users can see, use
352 the ICS <kbd>examine</kbd> command, or start an ICS match against yourself.
353 (See also the ICS Client topic above.)
354 <br><dt>Edit Tags<dd><a name="index-Edit-Tags_002c-Menu-Item-26"></a>Lets you edit the PGN (portable game notation)
355 tags for the current game. After editing, the tags must still conform to
358 <pre class="example"> <tag-section> ::= <tag-pair> <tag-section>
360 <tag-pair> ::= [ <tag-name> <tag-value> ]
361 <tag-name> ::= <identifier>
362 <tag-value> ::= <string>
364 <p class="noindent">See the PGN Standard for full details. Here is an example:
366 <pre class="example"> [Event "Portoroz Interzonal"]
367 [Site "Portoroz, Yugoslavia"]
370 [White "Robert J. Fischer"]
371 [Black "Bent Larsen"]
374 <p class="noindent">Any characters that do not match this syntax are silently ignored. Note that
375 the PGN standard requires all games to have at least the seven tags shown
376 above. Any that you omit will be filled in by XBoard
377 with ‘<samp><span class="samp">?</span></samp>’ (unknown value), or ‘<samp><span class="samp">-</span></samp>’ (inapplicable value).
378 <br><dt>Edit Comment<dd><a name="index-Edit-Comment_002c-Menu-Item-27"></a>Adds or modifies a comment on the current position. Comments are
379 saved by ‘<samp><span class="samp">Save Game</span></samp>’ and are displayed by ‘<samp><span class="samp">Load Game</span></samp>’,
380 ‘<samp><span class="samp">Forward</span></samp>’, and ‘<samp><span class="samp">Backward</span></samp>’.
381 <br><dt>Revert<dt>Annotate<dd><a name="index-Revert_002c-Menu-Item-28"></a><a name="index-Annotate_002c-Menu-Item-29"></a>If you are examining an ICS game and Pause mode is off,
382 Revert issues the ICS command ‘<samp><span class="samp">revert</span></samp>’.
383 In local mode, when you were editing or analyzing a game,
384 and the <code>-variations</code> command-line option is switched on,
385 you can start a new variation by holding the Shift key down while
386 entering a move not at the end of the game.
387 Variations can also become the currently displayed line by
388 clicking a PGN variation displayed in the Comment window.
389 This can be applied recursively,
390 so that you can analyze variations on variations;
391 each time you create a new variation by entering an alternative move
392 with Shift pressed, or select a new one from the Comment window,
393 the current variation will be shelved.
394 ‘<samp><span class="samp">Revert</span></samp>’ allows you to return to the most recently shelved variation.
395 The difference between ‘<samp><span class="samp">Revert</span></samp>’ and ‘<samp><span class="samp">Annotate</span></samp>’
396 is that with the latter,
397 the variation you are now abandoning will be added as a comment
398 (in PGN variation syntax, i.e. between parentheses)
399 to the original move where you deviated, for later recalling.
400 The <kbd>Home</kbd> key is a keyboard equivalent to ‘<samp><span class="samp">Revert</span></samp>’.
401 <br><dt>Truncate Game<dd><a name="index-Truncate-Game_002c-Menu-Item-30"></a>Discards all remembered moves of the game beyond the current
402 position. Puts XBoard into ‘<samp><span class="samp">Edit Game</span></samp>’ mode if it was not there
404 The <kbd>End</kbd> key is a keyboard equivalent.
405 <br><dt>Backward<dd><a name="index-Backward_002c-Menu-Item-31"></a><a name="index-g_t_003c_002c-Button-32"></a>Steps backward through a series of remembered moves.
406 The ‘<samp><span class="samp">[<]</span></samp>’ button and the <kbd>Alt+LeftArrow</kbd> key are equivalents,
407 as is turning the mouse wheel towards you.
408 In addition, pressing the Control key steps back one move, and releasing
409 it steps forward again.
411 <p>In most modes, ‘<samp><span class="samp">Backward</span></samp>’ only lets you look back at old positions;
412 it does not retract moves. This is the case if you are playing against
413 a chess engine, playing or observing a game on an ICS, or loading a game.
414 If you select ‘<samp><span class="samp">Backward</span></samp>’ in any of these situations, you will not
415 be allowed to make a different move. Use ‘<samp><span class="samp">Retract Move</span></samp>’ or
416 ‘<samp><span class="samp">Edit Game</span></samp>’ if you want to change past moves.
418 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Backward</span></samp>’
419 depends on whether XBoard is in Pause mode. If Pause mode is
420 off, ‘<samp><span class="samp">Backward</span></samp>’ issues the ICS backward command, which backs up
421 everyone's view of the game and allows you to make a different
422 move. If Pause mode is on, ‘<samp><span class="samp">Backward</span></samp>’ only backs up your local
424 <br><dt>Forward<dd><a name="index-Forward_002c-Menu-Item-33"></a><a name="index-g_t_003e_002c-Button-34"></a>Steps forward through a series of remembered moves (undoing the
425 effect of ‘<samp><span class="samp">Backward</span></samp>’) or forward through a game file. The
426 ‘<samp><span class="samp">[>]</span></samp>’ button and the <kbd>Alt+RightArrow</kbd> key are equivalents,
427 as is turning the mouse wheel away from you.
429 <p>If you are examining an ICS game, the behavior of Forward
430 depends on whether XBoard is in Pause mode. If Pause mode is
431 off, ‘<samp><span class="samp">Forward</span></samp>’ issues the ICS forward command, which moves
432 everyone's view of the game forward along the current line. If
433 Pause mode is on, ‘<samp><span class="samp">Forward</span></samp>’ only moves your local view forward,
434 and it will not go past the position that the game was in when
436 <br><dt>Back to Start<dd><a name="index-Back-to-Start_002c-Menu-Item-35"></a><a name="index-g_t_003c_003c_002c-Button-36"></a>Jumps backward to the first remembered position in the game.
437 The ‘<samp><span class="samp">[<<]</span></samp>’ button and the <kbd>Alt+Home</kbd> key are equivalents.
439 <p>In most modes, Back to Start only lets you look back at old
440 positions; it does not retract moves. This is the case if you
441 are playing against a local chess engine, playing or observing a game on
442 a chess server, or loading a game. If you select ‘<samp><span class="samp">Back to Start</span></samp>’ in any
443 of these situations, you will not be allowed to make different
444 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
445 moves; or use Reset to start a new game.
447 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Back to
448 Start</span></samp>’ depends on whether XBoard is in Pause mode. If Pause mode
449 is off, ‘<samp><span class="samp">Back to Start</span></samp>’ issues the ICS ‘<samp><span class="samp">backward 999999</span></samp>’
450 command, which backs up everyone's view of the game to the start and
451 allows you to make different moves. If Pause mode is on, ‘<samp><span class="samp">Back
452 to Start</span></samp>’ only backs up your local view.
453 <br><dt>Forward to End<dd><a name="index-Forward-to-End_002c-Menu-Item-37"></a><a name="index-g_t_003e_003e_002c-Button-38"></a>Jumps forward to the last remembered position in the game. The
454 ‘<samp><span class="samp">[>>]</span></samp>’ button and the <kbd>Alt+End</kbd> key are equivalents.
456 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Forward to
457 End</span></samp>’ depends on whether XBoard is in Pause mode. If Pause mode
458 is off, ‘<samp><span class="samp">Forward to End</span></samp>’ issues the ICS ‘<samp><span class="samp">forward 999999</span></samp>’
459 command, which moves everyone's view of the game forward to the end of
460 the current line. If Pause mode is on, ‘<samp><span class="samp">Forward to End</span></samp>’ only moves
461 your local view forward, and it will not go past the position
462 that the game was in when you paused.
466 <a name="View-Menu"></a>
468 Next: <a rel="next" accesskey="n" href="#Mode-Menu">Mode Menu</a>,
469 Previous: <a rel="previous" accesskey="p" href="#Edit-Menu">Edit Menu</a>,
470 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
474 <h3 class="section">2.3 View Menu</h3>
476 <p><a name="index-Menu_002c-View-39"></a><a name="index-View-Menu-40"></a>
478 <dt>Flip View<dd><a name="index-Flip-View_002c-Menu-Item-41"></a>Inverts your view of the chess board for the duration of the
479 current game. Starting a new game returns the board to normal.
480 The <kbd>F2</kbd> key is a keyboard equivalent.
481 <br><dt>Show Engine Output<dd><a name="index-Show-Engine-Output_002c-Menu-Item-42"></a>Shows or hides a window in which the thinking output of any loaded engines
482 is displayed. The shifted <kbd>Alt+O</kbd> key is a keyboard equivalent.
483 XBoard will display lines of thinking output of the same depth ordered by score,
484 (highest score on top), rather than in the order the engine produced them.
485 Usually this amounts to the same, as a normal engine search will only find new PV
486 (and emit it as thinking output)
487 when it searches a move with a higher score than the previous variation.
488 But when the engine is in multi-variation mode this needs not always be true,
489 and it is more convenient for someone analyzing games to see the moves sorted by score.
490 The order in which the engine found them is only of interest to the engine author,
491 and can still be deduced from the time or node count printed with the line.
492 <br><dt>Show Move History<dd><a name="index-Show-Move-History_002c-Menu-Item-43"></a>Shows or hides a list of moves of the current game.
493 The shifted <kbd>Alt+H</kbd> key is a keyboard equivalent.
494 This list allows you to move the display to any earlier position in the game
495 by clicking on the corresponding move.
496 <br><dt>Show Evaluation Graph<dd><a name="index-Show-Evaluation-Graph_002c-Menu-Item-44"></a>Shows or hides a window which displays a graph of how the engine score(s)
497 evolved as a function of the move number.
498 The shifted <kbd>Alt+E</kbd> key is a keyboard equivalent.
499 Clicking on the graph will bring
500 the corresponding position in the board display.
501 <br><dt>Show Game List<dd><a name="index-Show-Game-List_002c-Menu-Item-45"></a>Shows or hides the list of games generated by the last ‘<samp><span class="samp">Load Game</span></samp>’
502 command. The shifted <kbd>Alt+G</kbd> key is a keyboard equivalent.
503 <br><dt>Tags<dd><a name="index-Tags_002c-Menu-Item-46"></a>Pops up a window which shows the PGN (portable game notation)
504 tags for the current game.
505 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.
506 <br><dt>Comments<dd><a name="index-Comments_002c-Menu-Item-47"></a>Pops up a window which shows any comments to or variations on the current move.
507 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.
508 <br><dt>ICS Input Box<dd><a name="index-ICS-Input-Box_002c-Menu-Item-48"></a>If this option is set in ICS mode,
510 creates an extra window that you can use for typing in ICS commands.
511 The input box is especially useful if you want to type in something long or do
512 some editing on your input, because output from ICS doesn't get mixed
513 in with your typing as it would in the main terminal window.
517 <a name="Mode-Menu"></a>
519 Next: <a rel="next" accesskey="n" href="#Action-Menu">Action Menu</a>,
520 Previous: <a rel="previous" accesskey="p" href="#View-Menu">View Menu</a>,
521 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
525 <h3 class="section">2.4 Mode Menu</h3>
527 <p><a name="index-Menu_002c-Mode-49"></a><a name="index-Mode-Menu-50"></a>
529 <dt>Machine White<dd><a name="index-Machine-White_002c-Menu-Item-51"></a>Tells the chess engine to play White.
530 The <kbd>Ctrl-W</kbd> key is a keyboard equivalent.
531 <br><dt>Machine Black<dd><a name="index-Machine-Black_002c-Menu-Item-52"></a>Tells the chess engine to play Black.
532 The <kbd>Ctrl-B</kbd> key is a keyboard equivalent.
533 <br><dt>Two Machines<dd><a name="index-Two-Machines_002c-Menu-Item-53"></a>Plays a game between two chess engines.
534 The <kbd>Ctrl-T</kbd> key is a keyboard equivalent.
535 <br><dt>Analysis Mode<dd><a name="index-Analysis-Mode_002c-Menu-Item-54"></a>XBoard tells the chess engine to start analyzing the current game/position
536 and shows you the analysis as you move pieces around.
537 The <kbd>Ctrl-A</kbd> key is a keyboard equivalent.
538 Note: Some chess engines do not support Analysis mode.
540 <p>To set up a position to analyze, you do the following:
542 <p>1. Select Edit Position from the Mode Menu
544 <p>2. Set up the position. Use the middle and right buttons to
545 bring up the white and black piece menus.
547 <p>3. When you are finished, click on either the Black or White
548 clock to tell XBoard which side moves first.
550 <p>4. Select Analysis Mode from the Mode Menu to start the analysis.
552 <p>The analysis function can also be used when observing games on an ICS
553 with an engine loaded (zippy mode); the engine then will analyse
554 the positions as they occur in the observed game.
555 <br><dt>Analyze File<dd><a name="index-Analyze-File_002c-Menu-Item-55"></a>This option lets you load a game from a file (PGN, XBoard format, etc.)
556 and analyze it. The <kbd>Ctrl-F</kbd> key is a keyboard equivalent.
557 When you select this menu item, a pop-up window appears
558 and asks for a file name to load.
559 If the file contains multiple games, another pop up appears that lets
560 you select which game you wish to analyze.
561 After a game is loaded, XBoard will start auto-playing the game,
562 while the engine is analyzing the current position.
563 The game will be annotated with the results of these analyses.
564 In particlar, the score and depth will be added as a comment,
565 and the PV will be added as a variation.
566 The time the engine spends on analyzing each move can be controlled
567 through the command-line option ‘<samp><span class="samp">-timeDelay</span></samp>’.
568 Note: Some chess engines do not support Analysis mode.
569 <br><dt>Edit Game<dd>Duplicate of the item in the Edit menu.
570 Note that ‘<samp><span class="samp">Edit Game</span></samp>’ is the idle mode of XBoard, and can be used
571 to get you out of other modes. E.g. to stop analyzing, stop a game
572 between two engines or stop editing a position.
573 <br><dt>Edit Position<dd>Duplicate of the item in the Edit menu.
574 <br><dt>Training<dd><a name="index-Training_002c-Menu-Item-56"></a>Training mode lets you interactively guess the moves of a game for one
575 of the players. You guess the next move of the game by playing the
576 move on the board. If the move played matches the next move of the
577 game, the move is accepted and the opponent's response is auto-played.
578 If the move played is incorrect, an error message is displayed. You
579 can select this mode only while loading a game (that is, after
580 selecting ‘<samp><span class="samp">Load Game</span></samp>’ from the File menu). While XBoard is in
581 ‘<samp><span class="samp">Training</span></samp>’ mode, the navigation buttons are disabled.
582 <br><dt>ICS Client<dd><a name="index-ICS-Client_002c-Menu-Item-57"></a>This is the normal mode when XBoard
583 is connected to a chess server. If you have moved into
584 Edit Game or Edit Position mode, you can select this option to get out.
586 <p>To use xboard in ICS mode, run it in the foreground with the -ics
587 option, and use the terminal you started it from to type commands and
588 receive text responses from the chess server. See
589 <a href="#Chess-Servers">Chess Servers</a> below for more information.
591 <p>XBoard activates some special position/game editing features when you
592 use the <kbd>examine</kbd> or <kbd>bsetup</kbd> commands on ICS and you have
593 ‘<samp><span class="samp">ICS Client</span></samp>’ selected on the Mode menu. First, you can issue the
594 ICS position-editing commands with the mouse. Move pieces by dragging
595 with mouse button 1. To drop a new piece on a square, press mouse
596 button 2 or 3 over the square. This brings up a menu of white pieces
597 (button 2) or black pieces (button 3). Additional menu choices let
598 you empty the square or clear the board. Click on the White or Black
599 clock to set the side to play. You cannot set the side to play or
600 drag pieces to arbitrary squares while examining on ICC, but you can
601 do so in <kbd>bsetup</kbd> mode on FICS. In addition, the menu commands
602 ‘<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>’
603 have special functions in this mode; see below.
604 <br><dt>Pause<dd><a name="index-Pause_002c-Menu-Item-58"></a>Pauses updates to the board, and if you are playing against a chess engine,
605 also pauses your clock. To continue, select ‘<samp><span class="samp">Pause</span></samp>’ again, and the
606 display will automatically update to the latest position.
607 The ‘<samp><span class="samp">P</span></samp>’ button and keyboard <kbd>Pause</kbd> key are equivalents.
609 <p>If you select Pause when you are playing against a chess engine and
610 it is not your move, the chess engine's clock
611 will continue to run and it will eventually make a move, at which point
612 both clocks will stop. Since board updates are paused, however,
613 you will not see the move until you exit from Pause mode (or select Forward).
614 This behavior is meant to simulate adjournment with a sealed move.
616 <p>If you select Pause while you are observing or examining a game on a
617 chess server, you can step backward and forward in the current history
618 of the examined game without affecting the other observers and
619 examiners, and without having your display jump forward to the latest
620 position each time a move is made. Select Pause again to reconnect
621 yourself to the current state of the game on ICS.
623 <p>If you select ‘<samp><span class="samp">Pause</span></samp>’ while you are loading a game, the game stops
624 loading. You can load more moves manually by selecting ‘<samp><span class="samp">Forward</span></samp>’, or
625 resume automatic loading by selecting ‘<samp><span class="samp">Pause</span></samp>’ again.
629 <a name="Action-Menu"></a>
631 Next: <a rel="next" accesskey="n" href="#Engine-Menu">Engine Menu</a>,
632 Previous: <a rel="previous" accesskey="p" href="#Mode-Menu">Mode Menu</a>,
633 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
637 <h3 class="section">2.5 Action Menu</h3>
639 <p><a name="index-Menu_002c-Action-59"></a><a name="index-Action_002c-Menu-60"></a>
641 <dt>Accept<dd><a name="index-Accept_002c-Menu-Item-61"></a>Accepts a pending match offer.
642 The <kbd>F3</kbd> key is a keyboard equivalent.
643 If there is more than one offer
644 pending, you will have to type in a more specific command
645 instead of using this menu choice.
646 <br><dt>Decline<dd><a name="index-Decline_002c-Menu-Item-62"></a>Declines a pending offer (match, draw, adjourn, etc.).
647 The <kbd>F4</kbd> key is a keyboard equivalent. If there
648 is more than one offer pending, you will have to type in a more
649 specific command instead of using this menu choice.
650 <br><dt>Call Flag<dd><a name="index-Call-Flag_002c-Menu-Item-63"></a>Calls your opponent's flag, claiming a win on time, or claiming
651 a draw if you are both out of time.
652 The <kbd>F5</kbd> key is a keyboard equivalent.
653 You can also call your
654 opponent's flag by clicking on his clock.
655 <br><dt>Draw<dd><a name="index-Draw_002c-Menu-Item-64"></a>Offers a draw to your opponent, accepts a pending draw offer
656 from your opponent, or claims a draw by repetition or the 50-move
657 rule, as appropriate. The <kbd>F6</kbd> key is a keyboard equivalent.
658 <br><dt>Adjourn<dd><a name="index-Adjourn_002c-Menu-Item-65"></a>Asks your opponent to agree to adjourning the current game, or
659 agrees to a pending adjournment offer from your opponent.
660 The <kbd>F7</kbd> key is a keyboard equivalent.
661 <br><dt>Abort<dd><a name="index-Abort_002c-Menu-Item-66"></a>Asks your opponent to agree to aborting the current game, or
662 agrees to a pending abort offer from your opponent.
663 The <kbd>F8</kbd> key is a keyboard equivalent. An aborted
664 game ends immediately without affecting either player's rating.
665 <br><dt>Resign<dd><a name="index-Resign_002c-Menu-Item-67"></a>Resigns the game to your opponent. The <kbd>F9</kbd> key is a
667 <br><dt>Stop Observing<dd><a name="index-Stop-Observing_002c-Menu-Item-68"></a>Ends your participation in observing a game, by issuing the ICS
668 observe command with no arguments. ICS mode only.
669 The <kbd>F10</kbd> key is a keyboard equivalent.
670 <br><dt>Stop Examining<dd><a name="index-Stop-Examining_002c-Menu-Item-69"></a>Ends your participation in examining a game, by issuing the ICS
671 unexamine command. ICS mode only.
672 The <kbd>F11</kbd> key is a keyboard equivalent.
673 <br><dt>Upload to Examine<dd><a name="index-Upload-to-Examine_002c-Menu-Item-70"></a>Create an examined game of the proper variant on the ICS,
674 and send the game there that is currenty loaded in XBoard
675 (e.g. through pasting or loading from file).
676 You must be connected to an ICS for this to work.
677 <br><dt>Adjudicate to White<dt>Adjudicate to Black<dt>Adjudicate Draw<dd><a name="index-Adjudicate-to-White_002c-Menu-Item-71"></a><a name="index-Adjudicate-to-Black_002c-Menu-Item-72"></a><a name="index-Adjudicate-Draw_002c-Menu-Item-73"></a>Terminate an ongoing game in Two-Machines mode (including match mode),
678 with as result a win for white, for black, or a draw, respectively.
679 The PGN file of the game will accompany the result string
680 by the comment "user adjudication".
684 <a name="Engine-Menu"></a>
686 Next: <a rel="next" accesskey="n" href="#Options-Menu">Options Menu</a>,
687 Previous: <a rel="previous" accesskey="p" href="#Action-Menu">Action Menu</a>,
688 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
692 <h3 class="section">2.6 Engine Menu</h3>
694 <p><a name="index-Engine-Menu-74"></a><a name="index-Menu_002c-Engine-75"></a>
696 <dt>Engine #N Settings<dd><a name="index-Engine-Settings_002c-Menu-Item-76"></a><a name="index-Engine-_00231-Settings_002c-Menu-Item-77"></a><a name="index-Engine-_00232-Settings_002c-Menu-Item-78"></a>Pop up a menu dialog to alter the settings specific to the applicable engine.
697 (The second engine is only accessible once it has been used in Two-Machines mode.)
698 For each parameter the engine allows to be set,
699 a control element will appear in this dialog that can be used to alter the value.
700 Depending on the type of parameter (text string, number, multiple choice,
701 on/off switch, instantaneous signal) the appropriate control will appear,
702 with a description next to it.
703 XBoard has no idea what these values mean; it just passes them on to the engine.
704 How this dialog looks is completely determined by the engine,
705 and XBoard just passes it on to the user.
706 Many engines do not have any parameters that can be set by the user,
707 and in that case the dialog will be empty (except for the OK and cancel buttons).
708 UCI engines usually have many parameters. (But these are only visible with
709 a sufficiently modern version of the Polyglot adapter needed to run UCI engines,
710 e.g. Polyglot 1.4.55b.) For native XBoard engines this is less common.
711 <br><dt>Hint<dd><a name="index-Hint_002c-Menu-Item-79"></a>Displays a move hint from the chess engine.
712 <br><dt>Book<dd><a name="index-Book_002c-Menu-Item-80"></a>Displays a list of possible moves from the chess engine's opening
713 book. The exact format depends on what chess engine you are using.
714 With GNU Chess 4, the first column gives moves, the second column
715 gives one possible response for each move, and the third column shows
716 the number of lines in the book that include the move from the first
717 column. If you select this option and nothing happens, the chess
718 engine is out of its book or does not support this feature.
719 <br><dt>Move Now<dd><a name="index-Move-Now_002c-Menu-Item-81"></a>Forces the chess engine to move immediately. Chess engine mode only.
720 The <kbd>Ctrl-M</kbd> key is a keyboard equivalent.
721 <br><dt>Retract Move<dd><a name="index-Retract-Move_002c-Menu-Item-82"></a>Retracts your last move. In chess engine mode, you can do this only
722 after the chess engine has replied to your move; if the chess engine is still
723 thinking, use ‘<samp><span class="samp">Move Now</span></samp>’ first. In ICS mode, ‘<samp><span class="samp">Retract Move</span></samp>’
724 issues the command ‘<samp><span class="samp">takeback 1</span></samp>’ or ‘<samp><span class="samp">takeback 2</span></samp>’
725 depending on whether it is your opponent's move or yours.
726 The <kbd>Ctrl-X</kbd> key is a keyboard equivalent.
730 <a name="Options-Menu"></a>
732 Next: <a rel="next" accesskey="n" href="#Help-Menu">Help Menu</a>,
733 Previous: <a rel="previous" accesskey="p" href="#Engine-Menu">Engine Menu</a>,
734 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
738 <h3 class="section">2.7 Options Menu</h3>
740 <p><a name="index-Menu_002c-Options-83"></a><a name="index-Options-Menu-84"></a>
742 <dt>Time Control<dd><a name="index-Time-Control_002c-Menu-Item-85"></a>Pops up a sub-menu where you can set the time-control parameters interactively.
743 Allows you to select classical or incremental time controls,
744 set the moves per session, session duration, and time increment.
745 Also allows specification of time-odds factors for one or both engines.
746 If an engine is given a time-odds factor N, all time quota it gets,
747 be it at the beginning of a session or through the time increment or
748 fixed time per move, will be divided by N.
749 The shifted <kbd>Alt+T</kbd> key is a keyboard equivalent.
750 <br><dt>Common Engine<dd><a name="index-Common-Engine_002c-Menu-Item-86"></a>Pops up a sub-menu where you can set some engine parameters common to most engines,
751 such as hash-table size, tablebase cache size, maximum number of processors
752 that SMP engines can use, and where to find the Polyglot adapter needed
753 to run UCI engines under XBoard. The feature that allows setting of these parameters on
754 engines is new since XBoard 4.3.15, so not many XBoard/WinBoard engines respond
755 to it yet, but UCI engines should.
756 It is also possible to specify a GUI opening book here, i.e. an opening
757 book that XBoard consults for any position a playing engine gets in.
758 It then forces the engine to play the book move, rather than to think up its own,
759 if that position is found in the book.
760 The book can switched on and off independently for either engine.
761 The shifted <kbd>Alt+U</kbd> key is a keyboard equivalent.
762 <br><dt>Adjudications<dd><a name="index-Adjudications_002c-Menu-Item-87"></a>Pops up a sub-menu where you can enable or disable various adjudications
763 that XBoard can perform in engine-engine games.
764 The shifted <kbd>Alt+J</kbd> key is a keyboard equivalent.
765 You can instruct XBoard to detect and terminate the game on checkmate
766 or stalemate, even if the engines would not do so, to verify engine
767 result claims (forfeiting engines that make false claims), rather than
768 naively following the engine, to declare draw on positions
769 which can never be won for lack of mating material, (e.g. KBK),
770 or which are impossible to win unless the opponent seeks its own demise
772 For these adjudications to work, ‘<samp><span class="samp">Test Legality</span></samp>’ should be switched on.
773 It is also possible to instruct XBoard to enforce a 50-move or 3-fold-repeat
774 rule and automatically declare draw (after a user-adjustable number of moves
775 or repeats) even if the engines are prepared to go on.
776 It is also possible to have XBoard declare draw on games that seem to drag on
777 forever, or adjudicate a loss if both engines agree (for 3 consecutive moves) that one
778 of them is behind more than a user-adjustable score threshold.
779 For the latter adjudication to work, XBoard should be able to properly understand
780 the engine's scores. To facilitate the latter, you can inform xboard here if
781 the engines report scores from the viewpoint of white, or from that of their own color.
782 <br><dt>Game List<dd><a name="index-Game-List-Tags_002c-Menu-Item-88"></a>Pops up a dialog where you can select the PGN tags that should appear
783 on the lines in the game list, and their order.
784 <br><dt>Always Queen<dd><a name="index-Always-Queen_002c-Menu-Item-89"></a>If this option is off, XBoard brings up a dialog
785 box whenever you move a pawn to the last rank, asking what piece
786 you want to promote it to. If the option is true, your pawns are
787 always promoted to queens. Your opponent can still under-promote.
788 The shifted <kbd>Ctrl-Q</kbd> key is a keyboard equivalent.
789 <br><dt>Animate Dragging<dd><a name="index-Animate-Dragging_002c-Menu-Item-90"></a>If Animate Dragging is on, while you are dragging a piece with the
790 mouse, an image of the piece follows the mouse cursor.
791 If Animate Dragging is off, there is no visual feedback while you are
792 dragging a piece, but if Animate Moving is on, the move will be
793 animated when it is complete.
794 <br><dt>Animate Moving<dd><a name="index-Animate-Moving_002c-Menu-Item-91"></a>If Animate Moving is on, all piece moves are animated. An image of the
795 piece is shown moving from the old square to the new square when the
796 move is completed (unless the move was already animated by Animate Dragging).
797 If Animate Moving is off, a moved piece instantly disappears from its
798 old square and reappears on its new square when the move is complete.
799 The shifted <kbd>Ctrl-A</kbd> key is a keyboard equivalent.
800 <br><dt>Auto Comment<dd><a name="index-Auto-Comment_002c-Menu-Item-92"></a>If this option is on, any remarks made on ICS while you are observing or
801 playing a game are recorded as a comment on the current move. This includes
802 remarks made with the ICS commands <kbd>say</kbd>, <kbd>tell</kbd>, <kbd>whisper</kbd>,
803 and <kbd>kibitz</kbd>.
804 Limitation: remarks that you type yourself are not recognized;
805 XBoard scans only the output from ICS, not the input you type to it.
806 <br><dt>Auto Flag<dd><a name="index-Auto-Flag_002c-Menu-Item-93"></a>If this option is on and one player runs out of time
809 will automatically call his flag, claiming a win on time.
810 The shifted <kbd>Ctrl-F</kbd> key is a keyboard equivalent.
811 In ICS mode, Auto Flag will only call your opponent's flag, not yours,
812 and the ICS may award you a draw instead of a win if you have
813 insufficient mating material. In local chess engine mode,
815 may call either player's flag and will not take material into account (?).
816 <br><dt>Auto Flip View<dd><a name="index-Auto-Flip-View_002c-Menu-Item-94"></a>If the Auto Flip View option is on when you start a game, the board
817 will be automatically oriented so that your pawns move from the bottom
818 of the window towards the top.
819 <br><dt>Auto Observe<dd><a name="index-Auto-Observe_002c-Menu-Item-95"></a>If this option is on and you add a player to your <code>gnotify</code>
820 list on ICS, XBoard will automatically observe all of that
821 player's games, unless you are doing something else (such as
822 observing or playing a game of your own) when one starts.
823 The games are displayed
824 from the point of view of the player on your gnotify list; that is, his
825 pawns move from the bottom of the window towards the top.
826 Exceptions: If both players in a game are on your gnotify list, if
828 <code>highlight</code>
829 variable is set to 0, or if the ICS you are using does not
830 properly support observing from Black's point of view,
831 you will see the game from White's point of view.
832 <br><dt>Auto Raise Board<dd><a name="index-Auto-Raise-Board_002c-Menu-Item-96"></a>If this option is on, whenever a new game begins, the chessboard window
833 is deiconized (if necessary) and raised to the top of the stack of windows.
834 <br><dt>Auto Save<dd><a name="index-Auto-Save_002c-Menu-Item-97"></a>If this option is true, at the end of every game XBoard prompts
835 you for a file name and appends a record of the game to the file
837 Disabled if the <code>saveGameFile</code> command-line
838 option is set, as in that case all games are saved to the specified file.
839 See <a href="#Load-and-Save-options">Load and Save options</a>.
840 <br><dt>Blindfold<dd><a name="index-Blindfold_002c-Menu-Item-98"></a>If this option is on, XBoard displays the board as usual but does
841 not display pieces or move highlights. You can still move in the
842 usual way (with the mouse or by typing moves in ICS mode), even though
843 the pieces are invisible.
844 <br><dt>Flash Moves<dd><a name="index-Flash-Moves_002c-Menu-Item-99"></a>If this option is on, whenever a move is completed, the moved piece flashes.
845 The number of times to flash is set by the flashCount command-line
846 option; it defaults to 3 if Flash Moves is first turned on from the menu.
848 <p>If you are playing a game on an ICS, the board is always
849 oriented at the start of the game so that your pawns move from
850 the bottom of the window towards the top. Otherwise, the starting
851 orientation is determined by the <code>flipView</code> command line option;
852 if it is false (the default), White's pawns move from bottom to top
853 at the start of each game; if it is true, Black's pawns move from
854 bottom to top. See <a href="#User-interface-options">User interface options</a>.
855 <br><dt>Get Move List<dd><a name="index-Get-Move-List_002c-Menu-Item-100"></a>If this option is on, whenever XBoard
856 receives the first board of a new ICS game (or a different game from
857 the one it is currently displaying), it
858 retrieves the list of past moves from the ICS.
859 You can then review the moves with the ‘<samp><span class="samp">Forward</span></samp>’ and ‘<samp><span class="samp">Backward</span></samp>’
861 or save them with ‘<samp><span class="samp">Save Game</span></samp>’. You might want to
862 turn off this option if you are observing several blitz games at once,
863 to keep from wasting time and network bandwidth fetching the move lists over
865 When you turn this option on from the menu, XBoard
866 immediately fetches the move list of the current game (if any).
867 <br><dt>Highlight Dragging<dd><a name="index-Highlight-Dragging_002c-Menu-Item-101"></a>If Highlight Dragging is on, and the option -showTargetSquares is also on
868 in the settings file, all squares a piece that is 'picked up' with the mouse
869 can legally move to are highighted with a fat colored dot in the
870 highlightColor (non-captures) or premoveHighlightColor (captures).
871 Legality testing must be on for XBoard to know how the piece moves.
872 <br><dt>Highlight Last Move<dd><a name="index-Highlight-Last-Move_002c-Menu-Item-102"></a>If Highlight Last Move is on, after a move is made, the starting and
873 ending squares remain highlighted. In addition, after you use Backward
874 or Back to Start, the starting and ending squares of the last move to
875 be unmade are highlighted.
876 <br><dt>Highlight with Arrow<dd><a name="index-Highlight-with-Arrow_002c-Menu-Item-103"></a>Causes the highlighting described in Highlight Last Move to be done
877 by drawing an arrow between the highlighted squares,
878 so that it is visible even when the width of the grid lines is set to zero.
879 <br><dt>Move Sound<dd><a name="index-Move-Sound_002c-Menu-Item-104"></a>If this option is on, XBoard alerts you by playing a sound
880 after each of your opponent's moves (or after every
881 move if you are observing a game on the Internet Chess Server).
882 The sound is not played after moves you make or moves read from a
883 saved game file. By default, the
884 sound is the terminal bell, but on some systems you can change it
885 to a sound file using the soundMove option; see below.
887 <p>If you turn on this option when using XBoard with the Internet
888 Chess Server, you will probably want to give the
889 <kbd>set bell 0</kbd>
890 command to the ICS, since otherwise the ICS will ring the terminal bell
891 after every move (not just yours). (The <samp><span class="file">.icsrc</span></samp> file
892 is a good place for this; see <a href="#ICS-options">ICS options</a>.)
893 <br><dt>ICS Alarm<dd><a name="index-ICS-Alarm_002c-Menu-Item-105"></a>When this option is on, an alarm sound is played when your clock
894 counts down to the icsAlarmTime (by default, 5 seconds) in an ICS
895 game. For games with time controls that include an increment, the
896 alarm will sound each time the clock counts down to the icsAlarmTime.
897 By default, the alarm sound is the terminal bell, but on some systems
898 you can change it to a sound file using the soundIcsAlarm option; see
900 <br><dt>One-Click Moving<dd><a name="index-One_002dClick-Moving_002c-Menu-Item-106"></a>If this option is on, XBoard does not wait for you to click both the
901 from- and the to-square, or drag the piece, but performs a move as soon
902 as it is uniqely specified.
903 This applies to clicking an own piece that only has a single legal move,
904 clicking an empty square or opponent piece where only one of your pieces
905 can move (or capture) to.
906 Furthermore, a double-click on a piece that can only make a single capture
907 will cause that capture to be made.
908 Promoting a Pawn by clicking its to-square will suppress the promotion
909 popup, and make it promote to Queen.
910 <br><dt>Periodic Updates<dd><a name="index-Periodic-Updates_002c-Menu-Item-107"></a>If this option is off (or if
911 you are using a chess engine that does not support periodic updates),
913 will only be updated when the analysis changes. If this option is
914 on, the Analysis Window will be updated every two seconds.
915 <br><dt>Ponder Next Move<dd><a name="index-Ponder-Next-Move_002c-Menu-Item-108"></a>If this option is off, the chess engine will think only when it is on
916 move. If the option is on, the engine will also think while waiting
917 for you to make your move.
918 The shifted <kbd>Ctrl-P</kbd> key is a keyboard equivalent.
919 <br><dt>Popup Exit Message<dd><a name="index-Popup-Exit-Message_002c-Menu-Item-109"></a>If this option is on, when XBoard wants to display a message just
920 before exiting, it brings up a modal dialog box and waits for you to
921 click OK before exiting. If the option is off, XBoard prints the
922 message to standard error (the terminal) and exits immediately.
923 <br><dt>Popup Move Errors<dd><a name="index-Popup-Move-Errors_002c-Menu-Item-110"></a>If this option is off, when you make an error in moving (such as
924 attempting an illegal move or moving the wrong color piece), the
925 error message is displayed in the message area. If the option is
926 on, move errors are displayed in small pop-up windows like other errors.
927 You can dismiss an error pop-up either by clicking its OK button or by
928 clicking anywhere on the board, including down-clicking to start a move.
929 <br><dt>Premove<dd><a name="index-Premove_002c-Menu-Item-111"></a>If this option is on while playing a game on an ICS, you can register
930 your next planned move before it is your turn. Move the piece with
931 the mouse in the ordinary way, and the starting and ending squares
932 will be highlighted with a special color (red by default). When it is
933 your turn, if your registered move is legal, XBoard will send it to
934 ICS immediately; if not, it will be ignored and you can make a
935 different move. If you change your mind about your premove, either
936 make a different move, or double-click on any piece to cancel the move
938 <br><dt>Quiet Play<dd><a name="index-Quiet-Play_002c-Menu-Item-112"></a>If this option is on, XBoard will automatically issue an ICS
939 <kbd>set shout 0</kbd>
940 command whenever you start a game and a
941 <kbd>set shout 1</kbd>
942 command whenever you finish one. Thus, you will not be distracted
943 by shouts from other ICS users while playing.
944 <br><dt>Show Coords<dd><a name="index-Show-Coords_002c-Menu-Item-113"></a>If this option is on, XBoard displays algebraic coordinates
945 along the board's left and bottom edges.
946 <br><dt>Hide Thinking<dd><a name="index-Hide-Thinking_002c-Menu-Item-114"></a>If this option is off, the chess engine's notion of the score and best
947 line of play from the current position is displayed as it is
948 thinking. The score indicates how many pawns ahead (or if negative,
949 behind) the chess engine thinks it is. In matches between two
950 machines, the score is prefixed by ‘<samp><span class="samp">W</span></samp>’ or ‘<samp><span class="samp">B</span></samp>’ to indicate
951 whether it is showing White's thinking or Black's, and only the thinking
952 of the engine that is on move is shown.
953 The shifted <kbd>Ctrl-H</kbd> key is a keyboard equivalent.
954 <br><dt>Test Legality<dd><a name="index-Test-Legality_002c-Menu-Item-115"></a>If this option is on, XBoard tests whether the moves you try to make
955 with the mouse are legal and refuses to let you make an illegal move.
956 The shifted <kbd>Ctrl-L</kbd> key is a keyboard equivalent.
957 Moves loaded from a file with ‘<samp><span class="samp">Load Game</span></samp>’ are also checked. If
958 the option is off, all moves are accepted, but if a local chess engine
959 or the ICS is active, they will still reject illegal moves. Turning
960 off this option is useful if you are playing a chess variant with
961 rules that XBoard does not understand. (Bughouse, suicide, and wild
962 variants where the king may castle after starting on the d file are
963 generally supported with Test Legality on.)
964 <br><dt>Save Settings Now<dd><a name="index-Save-Settings-Now_002c-Menu-Item-116"></a>Selecting this menu item causes the current XBoard settings to be
965 written to the settings file, so they will also apply in future sessions.
966 Note that some settings are 'volatile', and are not saved,
967 because XBoard considers it too unlikely that you want those to apply
969 In particular this applies to the Chess program names, and all options
970 giving information on those Chess programs (such as their directory,
971 if they have their own opening book, if they are UCI or native XBoard),
972 or the variant you are playing.
973 Such options would still be understood when they appear in the settings
974 file in case they were put there with the aid of a text editor, but they
975 would disappear from the file as soon as you save the settings.
976 <br><dt>Save Settings on Exit<dd><a name="index-Save-Settings-on-Exit_002c-Menu-Item-117"></a>Setting this option has no immediate effect, but causes the settings
977 to be saved when you quit XBoard. What happens then is otherwise
978 identical to what happens when you use select "Save Settings Now",
983 <a name="Help-Menu"></a>
985 Next: <a rel="next" accesskey="n" href="#Keys">Keys</a>,
986 Previous: <a rel="previous" accesskey="p" href="#Options-Menu">Options Menu</a>,
987 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
991 <h3 class="section">2.8 Help Menu</h3>
993 <p><a name="index-Menu_002c-Help-118"></a><a name="index-Help-Menu-119"></a>
995 <dt>Info XBoard<dd><a name="index-Info-XBoard_002c-Menu-Item-120"></a>Displays the XBoard documentation in info format. For this feature to
996 work, you must have the GNU info program installed on your system, and
997 the file <samp><span class="file">xboard.info</span></samp> must either be present in the current
998 working directory, or have been installed by the ‘<samp><span class="samp">make install</span></samp>’
999 command when you built XBoard.
1000 <br><dt>Man XBoard<dd><a name="index-Man-XBoard_002c-Menu-Item-121"></a>Displays the XBoard documentation in man page format.
1001 The <kbd>F1</kbd> key is a keyboard equivalent. For this
1002 feature to work, the file <samp><span class="file">xboard.6</span></samp> must have been installed by
1003 the ‘<samp><span class="samp">make install</span></samp>’ command when you built XBoard, and the
1004 directory it was placed in must be on the search path for your
1005 system's ‘<samp><span class="samp">man</span></samp>’ command.
1006 <br><dt>About XBoard<dd><a name="index-About-XBoard_002c-Menu-Item-122"></a>Shows the current XBoard version number.
1012 Previous: <a rel="previous" accesskey="p" href="#Help-Menu">Help Menu</a>,
1013 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
1017 <h3 class="section">2.9 Other Shortcut Keys</h3>
1019 <p><a name="index-Keys-123"></a><a name="index-Shortcut-keys-124"></a>
1021 <dt>Iconize<dd>Pressing the <kbd>-</kbd> key iconizes XBoard. The graphical
1022 icon displays a white knight if it is White's move, or a black knight
1023 if it is Black's move. If your X window manager displays only text
1024 icons, not graphical ones, check its documentation; there is probably
1025 a way to enable graphical icons. If you get black and white reversed,
1026 we would like to hear about it; see <a href="#Problems">Problems</a> below for
1027 instructions on how to report this problem.
1028 <br><dt>Load Next Game<dd><a name="index-Load-Next-Game_002c-Menu-Item-125"></a>Loads the next game from the last game record file you loaded.
1029 The <kbd>Alt+PgDn</kbd> key is a keyboard equivalent.
1030 <br><dt>Load Previous Game<dd><a name="index-Load-Previous-Game_002c-Menu-Item-126"></a>Loads the previous game from the last game record file you
1031 loaded. The <kbd>Alt+PgUp</kbd> key is a keyboard equivalent.
1032 Not available if the last game was loaded from a pipe.
1033 <br><dt>Reload Same Game<dd><a name="index-Reload-Same-Game_002c-Menu-Item-127"></a>Reloads the last game you loaded.
1034 Not available if the last game was loaded from a pipe.
1035 <br><dt>Reload Same Position<dd><a name="index-Reload-Same-Position_002c-Menu-Item-128"></a>Reloads the last position you loaded.
1036 Not available if the last position was loaded from a pipe.
1039 <p>You can add or remove shortcut keys using the X resources
1040 <code>form.translations</code>. Here is an example of what would go in your
1041 <samp><span class="file">.Xresources</span></samp> file:
1043 <pre class="example"> XBoard*form.translations: \
1044 Shift<Key>?: AboutGameProc() \n\
1045 <Key>y: AcceptProc() \n\
1046 <Key>n: DeclineProc() \n\
1047 <Key>i: NothingProc()
1049 <p class="noindent">Binding a key to <code>NothingProc</code> makes it do nothing, thus removing
1050 it as a shortcut key. The XBoard commands that can be bound to keys
1053 <pre class="example"> AbortProc, AboutGameProc, AboutProc, AcceptProc, AdjournProc,
1054 AlwaysQueenProc, AnalysisModeProc, AnalyzeFileProc,
1055 AnimateDraggingProc, AnimateMovingProc, AutobsProc, AutoflagProc,
1056 AutoflipProc, AutoraiseProc, AutosaveProc, BackwardProc,
1057 BlindfoldProc, BookProc, CallFlagProc, CopyGameProc, CopyPositionProc,
1058 DebugProc, DeclineProc, DrawProc, EditCommentProc, EditGameProc,
1059 EditPositionProc, EditTagsProc, EnterKeyProc, FlashMovesProc,
1060 FlipViewProc, ForwardProc, GetMoveListProc, HighlightLastMoveProc,
1061 HintProc, Iconify, IcsAlarmProc, IcsClientProc, IcsInputBoxProc,
1062 InfoProc, LoadGameProc, LoadNextGameProc, LoadNextPositionProc,
1063 LoadPositionProc, LoadPrevGameProc, LoadPrevPositionProc,
1064 LoadSelectedProc, MachineBlackProc, MachineWhiteProc, MailMoveProc,
1065 ManProc, MoveNowProc, MoveSoundProc, NothingProc, OldSaveStyleProc,
1066 PasteGameProc, PastePositionProc, PauseProc, PeriodicUpdatesProc,
1067 PonderNextMoveProc, PopupExitMessageProc, PopupMoveErrorsProc,
1068 PremoveProc, QuietPlayProc, QuitProc, ReloadCmailMsgProc,
1069 ReloadGameProc, ReloadPositionProc, RematchProc, ResetProc,
1070 ResignProc, RetractMoveProc, RevertProc, SaveGameProc,
1071 SavePositionProc, ShowCoordsProc, ShowGameListProc, ShowThinkingProc,
1072 StopExaminingProc, StopObservingProc, TestLegalityProc, ToEndProc,
1073 ToStartProc, TrainingProc, TruncateGameProc, and TwoMachinesProc.
1076 <a name="Options"></a>
1078 Next: <a rel="next" accesskey="n" href="#Chess-Servers">Chess Servers</a>,
1079 Previous: <a rel="previous" accesskey="p" href="#Menus">Menus</a>,
1080 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
1084 <h2 class="chapter">3 Options</h2>
1086 <p><a name="index-Options-129"></a><a name="index-Options-130"></a>
1087 This section documents the command-line options to XBoard. You can
1088 set these options in two ways: by typing them on the shell command
1089 line you use to start XBoard, or by setting them as X resources
1090 (typically in your <samp><span class="file">.Xresources</span></samp> file). Many of the options
1091 cannot be changed while XBoard is running; others set the initial
1092 state of items that can be changed with the <a href="#Options">Options</a> menu.
1094 <p>Most of the options have both a long name and a short name. To turn a
1095 boolean option on or off from the command line, either give its long
1096 name followed by the value true or false
1097 (‘<samp><span class="samp">-longOptionName true</span></samp>’), or give just the short name to turn the
1098 option on (‘<samp><span class="samp">-opt</span></samp>’), or the short name preceded by ‘<samp><span class="samp">x</span></samp>’ to
1099 turn the option off (‘<samp><span class="samp">-xopt</span></samp>’). For options that take strings or
1100 numbers as values, you can use the long or short option names
1103 <p>Each option corresponds to an X resource with the same name, so
1104 if you like, you can set options in your <samp><span class="file">.Xresources</span></samp> file
1105 or in a file named <samp><span class="file">XBoard</span></samp> in your home directory.
1106 For options that have two names, the longer one is the name of
1107 the corresponding X resource; the short name is not recognized.
1108 To turn a boolean option on or off as an
1109 X resource, give its long name followed by the value
1110 true or false (‘<samp><span class="samp">XBoard*longOptionName: true</span></samp>’).
1113 <li><a accesskey="1" href="#Chess-engine-options">Chess engine options</a>: Controlling the chess engine.
1114 <li><a accesskey="2" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>: Setting some very common engine parameters
1115 <li><a accesskey="3" href="#ICS-options">ICS options</a>: Connecting to and using ICS.
1116 <li><a accesskey="4" href="#Load-and-Save-options">Load and Save options</a>: Input/output options.
1117 <li><a accesskey="5" href="#User-interface-options">User interface options</a>: Look and feel options.
1118 <li><a accesskey="6" href="#Adjudication-Options">Adjudication Options</a>: Control adjudication of engine-engine games.
1119 <li><a accesskey="7" href="#Other-options">Other options</a>: Miscellaneous.
1123 <a name="Chess-engine-options"></a>
1125 Next: <a rel="next" accesskey="n" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>,
1126 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1130 <h3 class="section">3.1 Chess Engine Options</h3>
1132 <p><a name="index-options_002c-Chess-engine-131"></a><a name="index-Chess-engine-options-132"></a>
1134 <dt>-tc or -timeControl minutes[:seconds]<dd><a name="index-tc_002c-option-133"></a><a name="index-timeControl_002c-option-134"></a>Each player begins with his clock set to the <code>timeControl</code> period.
1136 The additional options <code>movesPerSession</code> and <code>timeIncrement</code>
1137 are mutually exclusive.
1138 <br><dt>-mps or -movesPerSession moves<dd><a name="index-mps_002c-option-135"></a><a name="index-movesPerSession_002c-option-136"></a>When both players have made <code>movesPerSession</code> moves, a
1139 new <code>timeControl</code> period is added to both clocks. Default: 40 moves.
1140 <br><dt>-inc or -timeIncrement seconds<dd><a name="index-inc_002c-option-137"></a><a name="index-timeIncrement_002c-option-138"></a>If this option is specified, <code>movesPerSession</code> is ignored.
1141 Instead, after each player's move, <code>timeIncrement</code> seconds are
1143 Use ‘<samp><span class="samp">-inc 0</span></samp>’ if you want to require the entire
1144 game to be played in one <code>timeControl</code> period, with no increment.
1145 Default: -1, which specifies <code>movesPerSession</code> mode.
1146 <br><dt>-clock/-xclock or -clockMode true/false<dd><a name="index-clock_002c-option-139"></a><a name="index-clockMode_002c-option-140"></a>Determines whether or not to display the chess clocks. If clockMode is
1147 false, the clocks are not shown, but the side that is to play next
1148 is still highlighted. Also, unless <code>searchTime</code>
1149 is set, the chess engine still keeps track of the clock time and uses it to
1150 determine how fast to make its moves.
1151 <br><dt>-st or -searchTime minutes[:seconds]<dd><a name="index-st_002c-option-141"></a><a name="index-searchTime_002c-option-142"></a>Tells the chess engine to spend at most the given amount of time
1152 searching for each of its moves. Without this option, the chess engine
1153 chooses its search time based on the number of moves and amount
1154 of time remaining until the next time control.
1155 Setting this option also sets clockMode to false.
1156 <br><dt>-depth or -searchDepth number<dd><a name="index-sd_002c-option-143"></a><a name="index-searchDepth_002c-option-144"></a>Tells the chess engine to look ahead at most the given number of moves
1157 when searching for a move to make. Without this option, the chess
1158 engine chooses its search depth based on the number of moves and
1159 amount of time remaining until the next time control. With the option,
1160 the engine will cut off its search early if it reaches the specified depth.
1161 <br><dt>-firstNPS number<dt>-secondNPS number<dd><a name="index-firstNPS_002c-option-145"></a><a name="index-secondNPS_002c-option-146"></a>Tells the chess engine to use an internal time standard based on its node count,
1162 rather then wall-clock time, to make its timing decisions.
1163 The time in virtual seconds should be obtained by dividing the node count
1164 through the given number, like the number was a rate in nodes per second.
1165 Xboard will manage the clocks in accordance with this, relying on the number
1166 of nodes reported by the engine in its thinking output. If the given number equals zero,
1167 it can obviously not be used to convert nodes to seconds, and the time reported
1168 by the engine is used to decrement the XBoard clock in stead. The engine is supposed to
1169 report in CPU time it uses, rather than wall-clock time, in this mode. This option
1170 can provide fairer conditions for engine-engine matches on heavily loaded machines,
1171 or with very fast games (where the wall clock is too inaccurate).
1172 <code>showThinking</code> must be on for this option to work. Default: -1 (off).
1173 Not many engines might support this yet!
1174 <br><dt>-firstTimeOdds factor<dt>-secondTimeOdds factor<dd><a name="index-firstTimeOdds_002c-option-147"></a><a name="index-secondTimeOdds_002c-option-148"></a>Reduces the time given to the mentioned engine by the given factor.
1175 If pondering is off, the effect is indistinguishable from what would happen
1176 if the engine was running on an n-times slower machine. Default: 1.
1177 <br><dt>-timeOddsMode mode<dd><a name="index-timeOddsMode_002c-option-149"></a>This option determines how the case is handled where both engines have a time-odds handicap.
1178 If mode=1, the engine that gets the most time will always get the nominal time,
1179 as specified by the time-control options, and its opponent's time is renormalized accordingly.
1180 If mode=0, both play with reduced time. Default: 0.
1181 <br><dt>-hideThinkingFromHuman true/false<dd>Controls the Hide Thinking option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1182 (Replaces the Show-Thinking option of older xboard versions.)
1183 <br><dt>-thinking/-xthinking or -showThinking true/false<dd><a name="index-thinking_002c-option-150"></a><a name="index-showThinking_002c-option-151"></a>Forces the engine to send thinking output to xboard.
1184 Used to be the only way to control if thinking output was displayed
1185 in older xboard versions,
1186 but as the thinking output in xboard 4.3 is also used for several other
1187 purposes (adjudication, storing in PGN file) the display of it is now controlled
1188 by the new option Hide Thinking. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1189 (But if xboard needs the thinking output for some purpose,
1190 it makes the engine send it despite the setting of this option.)
1191 <br><dt>-ponder/-xponder or -ponderNextMove true/false<dd><a name="index-ponder_002c-option-152"></a><a name="index-ponderNextMove_002c-option-153"></a>Sets the Ponder Next Move menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1192 <br><dt>-smpCores number<dd>Specifies the maximum number of CPUs an SMP engine is allowed to use.
1193 Only works for engines that support the XBoard/WinBoard-protocol cores feature.
1194 <br><dt>-mg or -matchGames n<dd><a name="index-mg_002c-option-154"></a><a name="index-matchGames_002c-option-155"></a>Automatically runs an n-game match between two chess engines,
1195 with alternating colors.
1196 If the <code>loadGameFile</code> or <code>loadPositionFile</code> option is set,
1198 starts each game with the given opening moves or the given position;
1199 otherwise, the games start with the standard initial chess position.
1200 If the <code>saveGameFile</code> option is set, a move record for the
1201 match is appended to the specified file. If the <code>savePositionFile</code>
1202 option is set, the final position reached in each game of the match is appended
1203 to the specified file. When the match is over, XBoard
1204 displays the match score and exits. Default: 0 (do not run a match).
1205 <br><dt>-mm/-xmm or -matchMode true/false<dd><a name="index-mm_002c-option-156"></a><a name="index-matchMode_002c-option-157"></a>Setting <code>matchMode</code> to true is equivalent to setting
1206 <code>matchGames</code> to 1.
1207 <br><dt>-sameColorGames n<dd><a name="index-sameColorGames_002c-option-158"></a>Automatically runs an n-game match between two chess engines,
1208 without alternating colors.
1209 Otherwise the same applies as for the ‘<samp><span class="samp">-matchGames</span></samp>’ option,
1210 over which it takes precedence if both are specified. (See there.)
1211 Default: 0 (do not run a match).
1212 <br><dt>-fcp or -firstChessProgram program<dd><a name="index-fcp_002c-option-159"></a><a name="index-firstChessProgram_002c-option-160"></a>Name of first chess engine.
1213 Default: <samp><span class="file">Fairy-Max</span></samp>.
1214 <br><dt>-scp or -secondChessProgram program<dd><a name="index-scp_002c-option-161"></a><a name="index-secondChessProgram_002c-option-162"></a>Name of second chess engine, if needed.
1215 A second chess engine is started only in Two Machines (match) mode.
1216 Default: <samp><span class="file">Fairy-Max</span></samp>.
1217 <br><dt>-fb/-xfb or -firstPlaysBlack true/false<dd><a name="index-fb_002c-option-163"></a><a name="index-firstPlaysBlack_002c-option-164"></a>In games between two chess engines, firstChessProgram normally plays
1218 white. If this option is true, firstChessProgram plays black. In a
1219 multi-game match, this option affects the colors only for the first
1220 game; they still alternate in subsequent games.
1221 <br><dt>-fh or -firstHost host<dt>-sh or -secondHost host<dd><a name="index-fh_002c-option-165"></a><a name="index-firstHost_002c-option-166"></a><a name="index-sh_002c-option-167"></a><a name="index-secondHost_002c-option-168"></a>Hosts on which the chess engines are to run. The default for
1222 each is <samp><span class="file">localhost</span></samp>. If you specify another host, XBoard
1223 uses <samp><span class="file">rsh</span></samp> to run the chess engine there. (You can substitute a
1224 different remote shell program for rsh using the <code>remoteShell</code>
1225 option described below.)
1226 <br><dt>-fd or -firstDirectory dir<dt>-sd or -secondDirectory dir<dd><a name="index-fd_002c-option-169"></a><a name="index-firstDirectory_002c-option-170"></a><a name="index-sd_002c-option-171"></a><a name="index-secondDirectory_002c-option-172"></a>Working directories in which the chess engines are to be run.
1227 The default is "", which means to run the chess engine
1228 in the same working directory as XBoard
1229 itself. (See the CHESSDIR environment variable.)
1230 This option is effective only when the chess engine is being run
1231 on the local host; it does not work if the engine is run remotely
1232 using the -fh or -sh option.
1233 <br><dt>-initString string<dt>-secondInitString string<dd><a name="index-initString_002c-option-173"></a><a name="index-secondInitString_002c-option-174"></a>The string that is sent to initialize each chess engine for a new game.
1236 <pre class="example"> new
1239 <p class="noindent">Setting this option from the command line is tricky, because you must
1240 type in real newline characters, including one at the very end.
1241 In most shells you can do this by
1242 entering a ‘<samp><span class="samp">\</span></samp>’ character followed by a newline. It is easier to set
1243 the option from your <samp><span class="file">.Xresources</span></samp> file; in that case you can
1244 include the character sequence ‘<samp><span class="samp">\n</span></samp>’ in the string, and it will
1245 be converted to a newline.
1247 <p>If you change this option, don't remove the ‘<samp><span class="samp">new</span></samp>’
1248 command; it is required by all chess engines to
1251 <p>You can remove the ‘<samp><span class="samp">random</span></samp>’ command if you like; including it
1252 causes GNU Chess 4 to randomize its move selection slightly so that it
1253 doesn't play the same moves in every game. Even without
1254 ‘<samp><span class="samp">random</span></samp>’, GNU Chess 4 randomizes its choice of moves from its
1255 opening book. Many other chess engines ignore this command entirely
1256 and always (or never) randomize.
1258 <p>You can also try adding other commands to the initString; see the
1259 documentation of the chess engine you are using for details.
1260 <br><dt>-firstComputerString string<dt>-secondComputerString string<dd><a name="index-firstComputerString_002c-option-175"></a><a name="index-secondComputerString_002c-option-176"></a>The string that is sent to the chess engine if its opponent is another
1261 computer chess engine. The default is ‘<samp><span class="samp">computer\n</span></samp>’. Probably the
1262 only useful alternative is the empty string (‘<samp></samp>’), which keeps the
1263 engine from knowing that it is playing another computer.
1264 <br><dt>-reuse/-xreuse or -reuseFirst true/false<dt>-reuse2/-xreuse2 or -reuseSecond true/false<dd><a name="index-reuse_002c-option-177"></a><a name="index-reuseFirst_002c-option-178"></a><a name="index-reuse2_002c-option-179"></a><a name="index-reuseSecond_002c-option-180"></a>If the option is false,
1265 XBoard kills off the chess engine after every game and starts
1266 it again for the next game.
1267 If the option is true (the default),
1268 XBoard starts the chess engine only once
1269 and uses it repeatedly to play multiple games.
1270 Some old chess engines may not work properly when
1271 reuse is turned on, but otherwise games will start faster if it is left on.
1272 <br><dt>-firstProtocolVersion version-number<dt>-secondProtocolVersion version-number<dd><a name="index-firstProtocolVersion_002c-option-181"></a><a name="index-secondProtocolVersion_002c-option-182"></a>This option specifies which version of the chess engine communication
1273 protocol to use. By default, version-number is 2. In version 1, the
1274 "protover" command is not sent to the engine; since version 1 is a
1275 subset of version 2, nothing else changes. Other values for
1276 version-number are not supported.
1277 <br><dt>-firstScoreAbs true/false<dt>-secondScoreAbs true/false<dd><a name="index-firstScoreAbs_002c-option-183"></a><a name="index-secondScoreAbs_002c-option-184"></a>If this option is set, the score reported by the engine is taken to be
1278 that in favor of white, even when the engine plays black.
1279 Important when XBoard uses the score for adjudications, or in PGN reporting.
1280 <br><dt>-niceEngines priority<dd><a name="index-niceEngines_002c-option-185"></a>This option allows you to lower the priority of the engine processes,
1281 so that the generally insatiable hunger for CPU time of chess engines does not interfere so much
1282 with smooth operation of XBoard (or the rest of your system).
1283 Negative values could increase the engine priority, which is not recommended.
1284 <br><dt>-firstOptions string<dt>-secondOptions string<dd><a name="index-firstOptions_002c-option-186"></a><a name="index-secondOptions_002c-option-187"></a>The given string is a comma-separated list of (option name=option value) pairs,
1285 like the following example: "style=Karpov,blunder rate=0".
1286 If an option announced by the engine at startup through the feature commands of the XBoard/WinBoard protocol
1287 matches one of the option names (i.e. "style" or "blunder rate"),
1288 it would be set to the given value (i.e. "Karpov" or 0)
1289 through a corresponding option command to the engine.
1290 This provided that the type of the value (text or numeric) matches as well.
1291 <br><dt>-firstNeedsNoncompliantFEN string<dt>-secondNeedsNoncompliantFEN string<dd><a name="index-firstNeedsNoncompliantFEN_002c-option-188"></a><a name="index-secondNeedsNoncompliantFEN_002c-option-189"></a>The castling rights and e.p. fields of the FEN sent to the mentioned engine
1292 with the setboard command will be replaced by the given string. This can for
1293 instance be used to run engines that do not understand Chess960 FENs in
1294 variant fischerandom, to make them at least understand the opening position,
1295 through setting the string to "KQkq -". (Note you also have to give the e.p. field!)
1296 Other possible applications are to provide work-arounds for engines that want to see
1297 castling and e.p. fields in variants that do not have castling or e.p.
1298 (shatranj, courier, xiangqi, shogi) so that XBoard would normally omit them
1299 (string = "- -"), or to add variant-specific fields that are not yet supported by XBoard
1300 (e.g. to indicate the number of checks in 3check).
1301 <br><dt>-shuffleOpenings<dd><a name="index-shuffleOpenings_002c-option-190"></a>Forces shuffling of the opening setup in variants that normally have a fixed initial position.
1302 Shufflings are symmetric for black and white, and exempt King and Rooks in variants
1303 with normal castling.
1304 Remains in force until a new variant is selected.
1308 <a name="UCI-+-WB-Engine-Settings"></a>
1309 <a name="UCI-_002b-WB-Engine-Settings"></a>
1311 Next: <a rel="next" accesskey="n" href="#ICS-options">ICS options</a>,
1312 Previous: <a rel="previous" accesskey="p" href="#Chess-engine-options">Chess engine options</a>,
1313 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1317 <h3 class="section">3.2 UCI + WB Engine Settings</h3>
1319 <p><a name="index-Engine-Settings-191"></a><a name="index-Settings_002c-Engine-192"></a>
1321 <dt>-fUCI or -firstIsUCI true/false<dt>-sUCI or -secondIsUCI true/false<dd><a name="index-fUCI_002c-option-193"></a><a name="index-sUCI_002c-option-194"></a><a name="index-firstIsUCI_002c-option-195"></a><a name="index-secondIsUCI_002c-option-196"></a>Indicates if the mentioned engine executable file is an UCI engine,
1322 and should be run with the aid of the Polyglot adapter rather than directly.
1323 Xboard will then pass the other UCI options and engine name to Polyglot
1324 through a .ini temporary file created for the purpose.
1325 <br><dt>-PolyglotDir filename<dd><a name="index-PolyglotDir_002c-option-197"></a>Gives the name of the directory in which the Polyglot adapter for UCI engines expects its files.
1326 Default: "/usr/local/share/polyglot".
1327 <br><dt>-usePolyglotBook true/false<dd><a name="index-usePolyglotBook_002c-option-198"></a>Specifies if the Polyglot book should be used.
1328 <br><dt>-PolyglotBook filename<dd><a name="index-PolyglotBook_002c-option-199"></a>Gives the filename of the opening book that Polyglot should use.
1329 From XBoard 4.3.15 on, native XBoard/WinBoard engines will also use the opening book specified here,
1330 provided the <code>usePolyglotBook</code> option is set to true,
1331 and the option <code>firstHasOwnBookUCI</code> or <code>secondHasOwnBookUCI</code> applying to the engine
1333 The engine will be kept in force mode as long as the current position is in book,
1334 and XBoard will select the book moves for it. Default "".
1335 <br><dt>-fNoOwnBookUCI or -firstXBook or -firstHasOwnBookUCI true/false<dt>-sNoOwnBookUCI or -secondXBook or -secondHasOwnBookUCI true/false<dd><a name="index-fNoOwnBookUCI_002c-option-200"></a><a name="index-sNoOwnBookUCI_002c-option-201"></a><a name="index-firstHasOwnBookUCI_002c-option-202"></a><a name="index-secondHasOwnBookUCI_002c-option-203"></a><a name="index-firstXBook_002c-option-204"></a><a name="index-secondXBook_002c-option-205"></a>Indicates if the mentioned engine has its own opening book it should play from,
1336 rather than using the external book through XBoard. Default: false.
1337 <br><dt>-defaultHashSize n<dd><a name="index-defaultHashSize_002c-option-206"></a>Sets the size of the hash table to n MegaBytes. Together with the EGTB cache size
1338 this number is also used to calculate the memory setting of XBoard/WinBoard engines,
1339 for those that support the memory feature of the XBoard/WinBoard protocol. Default: 64.
1340 <br><dt>-defaultCacheSizeEGTB n<dd><a name="index-defaultCacheSizeEGTB_002c-option-207"></a>Sets the size of the EGTB cache to n MegaBytes. Together with the hash-table size
1341 this number is also used to calculate the memory setting of XBoard/WinBoard engines,
1342 for those that support the memory feature of the XBoard/WinBoard protocol. Default: 4.
1343 <br><dt>-defaultPathEGTB filename<dd><a name="index-defaultPathEGTB_002c-option-208"></a>Gives the name of the directory where the end-game tablebases are installed, for UCI engines.
1344 Default: "/usr/local/share/egtb".
1345 <br><dt>-egtFormats string<dd><a name="index-egtFormats_002c-option-209"></a>Specifies which end-game tables are installed on the computer, and where.
1346 The argument is a comma-separated list of format specifications,
1347 each specification consisting of a format name, a colon, and a directory path name,
1348 e.g. "nalimov:/usr/local/share/egtb".
1349 If the name part matches that of a format that the engine requests through a feature command,
1350 xboard will relay the path name for this format to the engine through an egtpath command.
1351 One egtpath command for each matching format will be sent.
1352 Popular formats are "nalimov" DTM tablebases and "scorpio" bitbases.
1357 <a name="ICS-options"></a>
1359 Next: <a rel="next" accesskey="n" href="#Load-and-Save-options">Load and Save options</a>,
1360 Previous: <a rel="previous" accesskey="p" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>,
1361 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1365 <h3 class="section">3.3 ICS options</h3>
1367 <p><a name="index-ICS-options-210"></a><a name="index-Options_002c-ICS-211"></a>
1369 <dt>-ics/-xics or -internetChessServerMode true/false<dd><a name="index-ics_002c-option-212"></a><a name="index-internetChessServerMode_002c-option-213"></a>Connect with an Internet Chess Server to play chess against its
1370 other users, observe games they are playing, or review games
1371 that have recently finished. Default: false.
1372 <br><dt>-icshost or -internetChessServerHost host<dd><a name="index-icshost_002c-option-214"></a><a name="index-internetChessServerHost_002c-option-215"></a>The Internet host name or address of the chess server to connect
1373 to when in ICS mode. Default: <code>chessclub.com</code>.
1374 Another popular chess server to try is <code>freechess.org</code>.
1375 If your site doesn't have a working Internet name server, try
1376 specifying the host address in numeric form.
1378 to specify the numeric address when using the icshelper option
1379 with timestamp or timeseal (see below).
1380 <br><dt>-icsport or -internetChessServerPort port-number<dd><a name="index-icsport_002c-option-216"></a><a name="index-internetChessServerPort_002c-option-217"></a>The port number to use when connecting to a chess server in ICS
1381 mode. Default: 5000.
1382 <br><dt>-icshelper or -internetChessServerHelper prog-name<dd><a name="index-icshelper_002c-option-218"></a><a name="index-internetChessServerHelper_002c-option-219"></a>An external helper program used to communicate with the chess server.
1383 You would set it to "timestamp" for ICC (chessclub.com) or
1384 "timeseal" for FICS (freechess.org), after
1385 obtaining the correct version of timestamp or timeseal for your
1386 computer. See "help timestamp" on ICC and "help timeseal" on FICS.
1387 This option is shorthand for <code>-useTelnet -telnetProgram program</code>.
1388 <br><dt>-telnet/-xtelnet or -useTelnet true/false<dd><a name="index-telnet_002c-option-220"></a><a name="index-useTelnet_002c-option-221"></a>This option is poorly named; it should be called useHelper.
1389 If set to true, it instructs XBoard to run an external
1390 program to communicate with the Internet Chess Server.
1391 The program to use is given by the telnetProgram option.
1393 false (the default), XBoard opens a TCP socket and uses its own
1394 internal implementation of the telnet protocol to communicate with the
1395 ICS. See <a href="#Firewalls">Firewalls</a>.
1396 <br><dt>-telnetProgram prog-name<dd><a name="index-telnetProgram_002c-option-222"></a>This option is poorly named; it should be called helperProgram.
1397 It gives the name of the telnet program to be used with
1398 the <code>gateway</code> and <code>useTelnet</code> options. The default is
1399 <samp><span class="file">telnet</span></samp>. The telnet program is invoked with the value of
1400 <code>internetChessServerHost</code> as its first argument and the value
1401 of <code>internetChessServerPort</code> as its second argument.
1402 See <a href="#Firewalls">Firewalls</a>.
1403 <br><dt>-gateway host-name<dd><a name="index-gateway_002c-option-223"></a>If this option is set to a host name, XBoard communicates with the
1404 Internet Chess Server by using <samp><span class="file">rsh</span></samp> to run
1405 the <code>telnetProgram</code> on the given host,
1406 instead of using its own internal implementation
1407 of the telnet protocol. You can substitute a different remote shell
1408 program for <samp><span class="file">rsh</span></samp> using the <code>remoteShell</code> option described below.
1409 See <a href="#Firewalls">Firewalls</a>.
1410 <br><dt>-internetChessServerCommPort or -icscomm dev-name<dd><a name="index-internetChessServerCommPort_002c-option-224"></a><a name="index-icscomm_002c-option-225"></a>If this option is set, XBoard communicates with the ICS through
1411 the given character I/O device instead of opening a TCP connection.
1412 Use this option if your system does not have any kind of
1413 Internet connection itself (not even a SLIP or PPP connection),
1414 but you do have dial-up access (or a hardwired terminal line) to
1415 an Internet service provider from which you can telnet to the ICS.
1417 <p>The support for this option in XBoard is minimal. You need to
1418 set all communication parameters and tty modes before you enter
1421 <p>Use a script something like this:
1423 <pre class="example"> stty raw -echo 9600 > /dev/tty00
1424 xboard -ics -icscomm /dev/tty00
1426 <p>Here replace ‘<samp><span class="samp">/dev/tty00</span></samp>’ with the name of the device that your
1427 modem is connected to. You might have to add several more
1428 options to these stty commands. See the man pages for <samp><span class="file">stty</span></samp>
1429 and <code>tty</code> if you run into problems. Also, on many systems stty
1430 works on its standard input instead of standard output, so you
1431 have to use ‘<samp><span class="samp"><</span></samp>’ instead of ‘<samp><span class="samp">></span></samp>’.
1433 <p>If you are using linux, try starting with the script below.
1434 Change it as necessary for your installation.
1436 <pre class="example"> #!/bin/sh -f
1437 # configure modem and fire up XBoard
1441 stty 2400 ; stty raw ; stty hupcl ; stty -clocal
1442 stty ignbrk ; stty ignpar ; stty ixon ; stty ixoff
1443 stty -iexten ; stty -echo
1445 xboard -ics -icscomm /dev/modem
1447 <p class="noindent">After you start XBoard in this way, type whatever commands are
1448 necessary to dial out to your Internet provider and log in.
1449 Then telnet to ICS, using a command like
1450 <kbd>telnet chessclub.com 5000</kbd>.
1451 Important: See the paragraph below about extra echoes,
1452 in <a href="#Limitations">Limitations</a>.
1453 <br><dt>-icslogon or -internetChessServerLogonScript file-name<dd><a name="index-icslogon_002c-option-226"></a><a name="index-internetChessServerLogonScript_002c-option-227"></a><a name="index-g_t_002eicsrc-228"></a>Whenever XBoard connects to the Internet Chess Server,
1454 if it finds a file with the name given in this option, it feeds the
1455 file's contents to the ICS as commands. The default file name
1456 is <samp><span class="file">.icsrc</span></samp>.
1457 Usually the first two lines of the file should be
1458 your ICS user name and password.
1459 The file can be either in $CHESSDIR, in XBoard's working
1460 directory if CHESSDIR is not set, or in your home directory.
1461 <br><dt>-msLoginDelay delay<dd><a name="index-msLoginDelay_002c-option-229"></a>If you experience trouble logging on to an ICS when using the
1462 <code>-icslogon</code> option, inserting some delay between characters
1463 of the logon script may help. This option adds <code>delay</code>
1464 milliseconds of delay between characters. Good values to try
1466 <br><dt>-icsinput/-xicsinput or -internetChessServerInputBox true/false<dd><a name="index-icsinput_002c-option-230"></a><a name="index-internetChessServerInputBox_002c-option-231"></a>Sets the ICS Input Box menu option. See <a href="#Mode-Menu">Mode Menu</a>. Default: false.
1467 <br><dt>-autocomm/-xautocomm or -autoComment true/false<dd><a name="index-autocomm_002c-option-232"></a><a name="index-autoComment_002c-option-233"></a>Sets the Auto Comment menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1468 <br><dt>-autoflag/-xautoflag or -autoCallFlag true/false<dd><a name="index-autoflag_002c-option-234"></a><a name="index-autoCallFlag_002c-option-235"></a>Sets the Auto Flag menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1469 <br><dt>-autobs/-xautobs or -autoObserve true/false<dd><a name="index-autobs_002c-option-236"></a><a name="index-autoObserve_002c-option-237"></a>Sets the Auto Observe menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1470 <br><dt>-autoKibitz<dd><a name="index-autoKibitz_002c-option-238"></a>Enables kibitzing of the engines last thinking output (depth, score, time, speed, PV)
1472 to the ICS, in zippy mode. The option <code>showThinking</code> must be switched on for
1473 this option to work.
1474 Also diverts similar kibitz information of an opponent engine that is playing you
1475 through the ICS to the engine-output window, as if the engine was playing locally.
1476 <br><dt>-seekGraph true/false or -sg<dd><a name="index-seekGraph_002c-option-239"></a><a name="index-sg_002c-option-240"></a>Enables displaying of the seek graph by left-clicking the board when
1477 you are logged on to an ICS and currently idle.
1478 The seek graph show all players currently seeking games on the ICS,
1479 plotted according to their rating and the time control of the game they seek,
1480 in three different colors (for rated, unrated and wild games).
1481 Computer ads are displayed as squares, human ads are dots.
1483 <br><dt>-autoRefresh true/false<dd><a name="index-autoRefresh_002c-option-241"></a>Enables automatic updating of the seek graph,
1484 by having the ICS send a running update of all newly placed
1485 and removed seek ads.
1486 This consumes a substantial amount of communication bandwidth,
1487 and is only supported for FICS and ICC.
1489 <br><dt>-backgroundObserve true/false<dd><a name="index-backgroundObserve_002c-option-242"></a>When true, boards sent to you by the ICS from other games while you are playing
1490 (e.g. because you are observing them)
1491 will not be automatically displayed.
1492 Only a summary of time left and material of both players will appear
1493 in the message field above the board.
1494 XBoard will remember the last board it has received this way,
1495 and will display it in stead of the position in your own game
1496 when you press the right mouse button.
1497 No other information is stored on such games observed in the background;
1498 you cannot save such a game later, or step through its moves.
1499 This feature is provided solely for the benefit of bughouse players,
1500 to enable them to peek at their partner's game without the need
1503 <br><dt>-dualBoard true/false<dd><a name="index-dualBoard_002c-option-243"></a>In combination with -backgroundObserve true, this option will display
1504 the board of the background game side by side with that of your own game,
1505 so you can have it in view permanently.
1506 Any board or holdings info coming in will be displayed on the secondary
1508 This feature is still experimental and largely unfinished.
1509 There is no animation or highlighting of moves on the secondary board.
1511 <br><dt>-oneClickMove true/false<dd><a name="index-oneClickMove_002c-option-244"></a>When set, this option allows you to enter moves by only clicking the to-
1512 or from-square, when only a single legal move to or from that square
1514 Double-clicking a piece (or clicking an already selected piece)
1515 will instruct that piece to make the only capture it can legally do.
1517 <br><dt>-moves/-xmoves or -getMoveList true/false<dd><a name="index-moves_002c-option-245"></a><a name="index-getMoveList_002c-option-246"></a>Sets the Get Move List menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1518 <br><dt>-alarm/-xalarm or -icsAlarm true/false<dd><a name="index-alarm_002c-option-247"></a><a name="index-icsAlarm_002c-option-248"></a>Sets the ICS Alarm menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1519 <br><dt>-icsAlarmTime ms<dd><a name="index-icsAlarmTime_002c-option-249"></a>Sets the time in milliseconds for the ICS Alarm menu option.
1520 See <a href="#Options-Menu">Options Menu</a>. Default: 5000.
1521 <br><dt>lowTimeWarning true/false<dd><a name="index-lowTimeWarning_002c-option-250"></a>Controls a color change of the board as a warning your time is running out.
1522 See <a href="#Options-Menu">Options Menu</a>. Default: false.
1523 <br><dt>-pre/-xpre \fRor\fB -premove true/false<dd><a name="index-pre_002c-option-251"></a><a name="index-premove_002c-option-252"></a>Sets the Premove menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1524 <br><dt>-quiet/-xquiet or -quietPlay true/false<dd><a name="index-quiet_002c-option-253"></a><a name="index-quietPlay_002c-option-254"></a>Sets the Quiet Play menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1525 <br><dt>-colorizeMessages or -colorize<dd><a name="index-Colors-255"></a><a name="index-colorize_002c-option-256"></a>Setting colorizeMessages
1526 to true tells XBoard to colorize the messages received from
1527 the ICS. Colorization works only if your xterm
1528 supports ISO 6429 escape sequences for changing text colors.
1529 <br><dt>-colorShout foreground,background,bold<dt>-colorSShout 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-257"></a><a name="index-colorShout_002c-option-258"></a><a name="index-colorSShout_002c-option-259"></a><a name="index-colorChannel1_002c-option-260"></a><a name="index-colorChannel_002c-option-261"></a><a name="index-colorKibitz_002c-option-262"></a><a name="index-colorTell_002c-option-263"></a><a name="index-colorChallenge_002c-option-264"></a><a name="index-colorRequest_002c-option-265"></a><a name="index-colorSeek_002c-option-266"></a><a name="index-colorNormal_002c-option-267"></a>These options set the colors used when colorizing ICS messages.
1530 All ICS messages are grouped into one of these categories:
1531 shout, sshout, channel 1, other channel, kibitz, tell, challenge,
1532 request (including abort, adjourn, draw, pause, and takeback), or
1533 normal (all other messages).
1535 <p>Each foreground or background argument can be one of the following:
1536 black, red, green, yellow, blue, magenta, cyan, white, or default.
1537 Here “default” means the default foreground or background color of
1538 your xterm. Bold can be 1 or 0. If background is omitted, “default”
1539 is assumed; if bold is omitted, 0 is assumed.
1541 <p>Here is an example of how to set the colors in your <samp><span class="file">.Xresources</span></samp> file.
1542 The colors shown here are the default values; you will get
1543 them if you turn <code>-colorize</code> on without specifying your own colors.
1545 <pre class="example"> xboard*colorizeMessages: true
1546 xboard*colorShout: green
1547 xboard*colorSShout: green, black, 1
1548 xboard*colorChannel1: cyan
1549 xboard*colorChannel: cyan, black, 1
1550 xboard*colorKibitz: magenta, black, 1
1551 xboard*colorTell: yellow, black, 1
1552 xboard*colorChallenge: red, black, 1
1553 xboard*colorRequest: red
1554 xboard*colorSeek: blue
1555 xboard*colorNormal: default
1557 <br><dt>-soundProgram progname<dd><a name="index-soundProgram_002c-option-268"></a><a name="index-Sounds-269"></a>If this option is set to a sound-playing program that is installed and
1558 working on your system, XBoard can play sound files when certain
1559 events occur, listed below. The default program name is "play". If
1560 any of the sound options is set to "$", the event rings the terminal
1561 bell by sending a ^G character to standard output, instead of playing
1562 a sound file. If an option is set to the empty string "", no sound is
1563 played for that event.
1564 <br><dt>-soundShout filename<dt>-soundSShout filename<dt>-soundChannel filename<dt>-soundKibitz filename<dt>-soundTell filename<dt>-soundChallenge filename<dt>-soundRequest filename<dt>-soundSeek filename<dd><a name="index-soundShout_002c-option-270"></a><a name="index-soundSShout_002c-option-271"></a><a name="index-soundChannel_002c-option-272"></a><a name="index-soundKibitz_002c-option-273"></a><a name="index-soundTell_002c-option-274"></a><a name="index-soundChallenge_002c-option-275"></a><a name="index-soundRequest_002c-option-276"></a><a name="index-soundSeek_002c-option-277"></a>These sounds are triggered in the same way as the colorization events
1565 described above. They all default to "", no sound. They are played
1566 only if the colorizeMessages is on.
1567 <br><dt>-soundMove filename<dd><a name="index-soundMove_002c-option-278"></a>This sound is used by the Move Sound menu option. Default: "$".
1568 <br><dt>-soundIcsAlarm filename<dd><a name="index-soundIcsAlarm_002c-option-279"></a>This sound is used by the ICS Alarm menu option. Default: "$".
1569 <br><dt>-soundIcsWin filename<dd><a name="index-soundIcsWin_002c-option-280"></a>This sound is played when you win an ICS game. Default: "" (no sound).
1570 <br><dt>-soundIcsLoss filename<dd><a name="index-soundIcsLoss_002c-option-281"></a>This sound is played when you lose an ICS game. Default: "" (no sound).
1571 <br><dt>-soundIcsDraw filename<dd><a name="index-soundIcsDraw_002c-option-282"></a>This sound is played when you draw an ICS game. Default: "" (no sound).
1572 <br><dt>-soundIcsUnfinished filename<dd><a name="index-soundIcsUnfinished_002c-option-283"></a>This sound is played when an ICS game that you are participating in is
1573 aborted, adjourned, or otherwise ends inconclusively. Default: "" (no
1576 <p>Here is an example of how to set the sounds in your <samp><span class="file">.Xresources</span></samp> file:
1578 <pre class="example"> xboard*soundShout: shout.wav
1579 xboard*soundSShout: sshout.wav
1580 xboard*soundChannel1: channel1.wav
1581 xboard*soundChannel: channel.wav
1582 xboard*soundKibitz: kibitz.wav
1583 xboard*soundTell: tell.wav
1584 xboard*soundChallenge: challenge.wav
1585 xboard*soundRequest: request.wav
1586 xboard*soundSeek: seek.wav
1587 xboard*soundMove: move.wav
1588 xboard*soundIcsWin: win.wav
1589 xboard*soundIcsLoss: lose.wav
1590 xboard*soundIcsDraw: draw.wav
1591 xboard*soundIcsUnfinished: unfinished.wav
1592 xboard*soundIcsAlarm: alarm.wav
1594 <br><dt>-dropMenu true|false<dd><a name="index-dropMenu_002c-option-284"></a>This option allows you to emulate old behavior,
1595 where the right mouse button brings up the (now deprecated) drop menu
1596 rather than displaying the position at the end of the principal variation.
1598 <br><dt>-variations true|false<dd><a name="index-variations_002c-option-285"></a>When this option is on, you can start new variations in Edit Game or
1599 Analyze mode by holding the Shift key down while entering a move.
1600 When it is off, the Shift key will be ignored.
1605 <a name="Load-and-Save-options"></a>
1607 Next: <a rel="next" accesskey="n" href="#User-interface-options">User interface options</a>,
1608 Previous: <a rel="previous" accesskey="p" href="#ICS-options">ICS options</a>,
1609 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1613 <h3 class="section">3.4 Load and Save options</h3>
1615 <p><a name="index-Options_002c-Load-and-Save-286"></a><a name="index-Load-and-Save-options-287"></a>
1617 <dt>-lgf or -loadGameFile file<dt>-lgi or -loadGameIndex index<dd><a name="index-lgf_002c-option-288"></a><a name="index-loadGameFile_002c-option-289"></a><a name="index-lgi_002c-option-290"></a><a name="index-loadGameIndex_002c-option-291"></a>If the <code>loadGameFile</code> option is set, XBoard loads the specified
1618 game file at startup. The file name <samp><span class="file">-</span></samp> specifies the standard
1619 input. If there is more than one game in the file, XBoard
1620 pops up a menu of the available games, with entries based on their PGN
1621 (Portable Game Notation) tags.
1622 If the <code>loadGameIndex</code> option is set to ‘<samp><span class="samp">N</span></samp>’, the menu is suppressed
1623 and the N th game found in the file is loaded immediately.
1624 The menu is also suppressed if <code>matchMode</code> is enabled or if the game file
1625 is a pipe; in these cases the first game in the file is loaded immediately.
1626 Use the <samp><span class="file">pxboard</span></samp> shell script provided with XBoard if you
1627 want to pipe in files containing multiple games and still see the menu.
1628 If the loadGameIndex specifies an index -1, this triggers auto-increment
1629 of the index in <code>matchMode</code>, which means that after every game the
1630 index is incremented by one, causing each game of the match to be played
1631 from the next game in the file. Similarly, specifying an index value of -2
1632 causes the index to be incremented every two games, so that each game
1633 in the file is used twice (with reversed colors).
1634 The <code>rewindIndex</code> option causes the index to be reset to the
1635 first game of the file when it has reached a specified value.
1636 <br><dt>-rewindIndex n<dd>Causes a position file or game file to be rewound to its beginning after n
1637 positions or games in auto-increment <code>matchMode</code>.
1638 See <code>loadPositionIndex</code> and <code>loadGameIndex</code>.
1639 default: 0 (no rewind).
1640 <br><dt>-td or -timeDelay seconds<dd><a name="index-td_002c-option-292"></a><a name="index-timeDelay_002c-option-293"></a>Time delay between moves during ‘<samp><span class="samp">Load Game</span></samp>’ or ‘<samp><span class="samp">Analyze File</span></samp>’.
1641 Fractional seconds are allowed; try ‘<samp><span class="samp">-td 0.4</span></samp>’.
1642 A time delay value of -1 tells
1643 XBoard not to step through game files automatically. Default: 1 second.
1644 <br><dt>-sgf or -saveGameFile file<dd><a name="index-sgf_002c-option-294"></a><a name="index-saveGameFile_002c-option-295"></a>If this option is set, XBoard appends a record of every game
1645 played to the specified file. The file name <samp><span class="file">-</span></samp> specifies the
1647 <br><dt>-autosave/-xautosave or -autoSaveGames true/false<dd><a name="index-autosave_002c-option-296"></a><a name="index-autoSaveGames_002c-option-297"></a>Sets the Auto Save menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1648 Ignored if <code>saveGameFile</code> is set.
1649 <br><dt>-lpf or -loadPositionFile file<dt>-lpi or -loadPositionIndex index<dd><a name="index-lpf_002c-option-298"></a><a name="index-loadPositionFile_002c-option-299"></a><a name="index-lpi_002c-option-300"></a><a name="index-loadPositionIndex_002c-option-301"></a>If the <code>loadPositionFile</code> option is set, XBoard loads the
1650 specified position file at startup. The file name <samp><span class="file">-</span></samp> specifies the
1651 standard input. If the <code>loadPositionIndex</code> option is set to N,
1652 the Nth position found in the file is loaded; otherwise the
1653 first position is loaded.
1654 If the loadPositionIndex specifies an index -1, this triggers auto-increment
1655 of the index in <code>matchMode</code>, which means that after every game the
1656 index is incremented by one, causing each game of the match to be played
1657 from the next position in the file. Similarly, specifying an index value of -2
1658 causes the index to be incremented every two games, so that each position
1659 in the file is used twice (with the engines playing opposite colors).
1660 The <code>rewindIndex</code> option causes the index to be reset to the
1661 first position of the file when it has reached a specified value.
1662 <br><dt>-spf or -savePositionFile file<dd><a name="index-spf_002c-option-302"></a><a name="index-savePositionFile_002c-option-303"></a>If this option is set, XBoard appends the final position reached
1663 in every game played to the specified file. The file name <samp><span class="file">-</span></samp>
1664 specifies the standard output.
1665 <br><dt>-pgnExtendedInfo true/false<dd><a name="index-pgnExtendedInfo_002c-option_0060-304"></a>If this option is set, XBoard saves depth, score and time used for each
1666 move that the engine found as a comment in the PGN file.
1668 <br><dt>-pgnEventHeader string<dd><a name="index-pgnEventHeader_002c-option_0060-305"></a>Sets the name used in the PGN event tag to string.
1669 Default: "Computer Chess Game".
1670 <br><dt>-saveOutOfBookInfo true/false<dd><a name="index-saveOutOfBookInfo_002c-option_0060-306"></a>Include the information on how the engine(s) game out of its opening book
1671 in a special 'annotator' tag with the PGN file.
1672 <br><dt>-oldsave/-xoldsave or -oldSaveStyle true/false<dd><a name="index-oldsave_002c-option-307"></a><a name="index-oldSaveStyle_002c-option-308"></a>Sets the Old Save Style menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1673 <br><dt>-gameListTags string<dd><a name="index-gameListTags_002c-option-309"></a>The character string lists the PGN tags that should be printed in the
1674 Game List, and their order. The meaning of the codes is e=event,
1675 s=site, d=date, o=round, p=players, r=result, w=white Elo, b=black Elo,
1676 t=time control, v=variant, a=out-of-book info, c=result comment.
1678 <br><dt>-ini or -settingsFile filename<dt>-saveSettingsFile filename<dt>@filename<dd><a name="index-saveSettingsFile_002c-option-310"></a><a name="index-SettingsFile_002c-option-311"></a><a name="index-init_002c-option-312"></a><a name="index-at-sign_002c-option-313"></a>When XBoard encounters an option -settingsFile (or -ini for short),
1679 or @filename, it tries to read the mentioned file,
1680 and substitutes the contents of it (presumaby more command-line options)
1681 in place of the option.
1682 In the case of -ini or -settingsFile, the name of a successfully read
1683 settings file is also remembered as the file to use for saving settings
1684 (automatically on exit, or on user command).
1685 An option of the form @filename does not affect saving.
1686 The option -saveSettingsFile does specify a name of the file to use
1687 for saving, without reading any options from it, and is thus also effective
1688 when the file did not exist yet.
1689 So the settings will be saved to the file specified in the last
1690 -saveSettingsFile or succesfull -settingsFile / -ini command,
1691 if any, and in /etc/xboard/xboard.conf otherwise.
1692 Usualy the latter is only accessible for the system administrator, though,
1693 and will be used to contain system-wide default setings, amongst which
1694 a -saveSettingsFile and -settingsFile options to specify a settings file
1695 accessible to the individual user, such as ~/.xboardrc in the user's
1700 <a name="User-interface-options"></a>
1702 Next: <a rel="next" accesskey="n" href="#Adjudication-Options">Adjudication Options</a>,
1703 Previous: <a rel="previous" accesskey="p" href="#Load-and-Save-options">Load and Save options</a>,
1704 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1708 <h3 class="section">3.5 User interface options</h3>
1710 <p><a name="index-User-interface-options-314"></a><a name="index-Options_002c-User-interface-315"></a>
1712 <dt>-display<dt>-geometry<dt>-iconic<dd><a name="index-display_002c-option-316"></a><a name="index-geometry_002c-option-317"></a><a name="index-iconic_002c-option-318"></a>These and most other standard Xt options are accepted.
1713 <br><dt>-noGUI<dd><a name="index-noGUI_002c-option-319"></a>Suppresses all GUI functions of XBoard
1714 (to speed up automated ultra-fast engine-engine games, which you donÂ’t want to watch).
1715 There will be no board or clock updates, no printing of moves,
1716 and no update of the icon on the task bar in this mode.
1717 <br><dt>-movesound/-xmovesound or -ringBellAfterMoves true/false<dd><a name="index-movesound_002c-option-320"></a><a name="index-bell_002c-option-321"></a><a name="index-ringBellAfterMoves_002c-option-322"></a>Sets the Move Sound menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1718 For compatibility with old XBoard versions, -bell/-xbell are also
1719 accepted as abbreviations for this option.
1720 <br><dt>-exit/-xexit or -popupExitMessage true/false<dd><a name="index-exit_002c-option-323"></a><a name="index-popupExitMessage_002c-option-324"></a>Sets the Popup Exit Message menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1721 <br><dt>-popup/-xpopup or -popupMoveErrors true/false<dd><a name="index-popup_002c-option-325"></a><a name="index-popupMoveErrors_002c-option-326"></a>Sets the Popup Move Errors menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1722 <br><dt>-queen/-xqueen or -alwaysPromoteToQueen true/false<dd><a name="index-queen_002c-option-327"></a><a name="index-alwaysPromoteToQueen_002c-option-328"></a>Sets the Always Queen menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1723 <br><dt>-legal/-xlegal or -testLegality true/false<dd><a name="index-legal_002c-option-329"></a><a name="index-testLegality_002c-option-330"></a>Sets the Test Legality menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1724 <br><dt>-size or -boardSize (sizeName | n1,n2,n3,n4,n5,n6,n7)<dd><a name="index-size_002c-option-331"></a><a name="index-boardSize_002c-option-332"></a><a name="index-board-size-333"></a>Determines how large the board will be, by selecting the pixel size
1725 of the pieces and setting a few related parameters.
1726 The sizeName can be one of: Titanic, giving 129x129 pixel pieces,
1727 Colossal 116x116, Giant 108x108, Huge 95x95, Big 87x87, Large 80x80, Bulky 72x72,
1728 Medium 64x64, Moderate 58x58, Average 54x54, Middling 49x49, Mediocre
1729 45x45, Small 40x40, Slim 37x37, Petite 33x33, Dinky 29x29, Teeny 25x25,
1731 Orthodox pieces of all these sizes are built into XBoard.
1733 be used if you have them; see the pixmapDirectory and bitmapDirectory
1735 Complete sets of un-orthodox pieces are only provided in sizes
1736 Bulky, Middling and (to a lesser extent) Petite;
1737 Archbishop, Marshall and Amazon are also available in all sizes between
1739 When no bitmap is available, the piece will be displayed as Amazon or King.
1740 The default depends on the size of your screen; it is approximately the
1741 largest size that will fit without clipping.
1743 <p>You can select other sizes or vary other layout parameters by providing
1744 a list of comma-separated values (with no spaces) as the argument.
1745 You do not need to provide all the values; for any you omit from the
1746 end of the list, defaults are taken from the nearest built-in size.
1747 The value <code>n1</code> gives the piece size, <code>n2</code> the width of the
1749 between squares, <code>n3</code> the desired size for the
1750 clockFont, <code>n4</code> the desired size for the coordFont,
1751 <code>n5</code> the desired size for the default font,
1752 <code>n6</code> the smallLayout flag (0 or 1),
1753 and <code>n7</code> the tinyLayout flag (0 or 1).
1754 All dimensions are in pixels.
1755 If the border between squares is eliminated (0 width), the various
1756 highlight options will not work, as there is nowhere to draw the highlight.
1757 If smallLayout is 1 and <code>titleInWindow</code> is true,
1758 the window layout is rearranged to make more room for the title.
1759 If tinyLayout is 1, the labels on the menu bar are abbreviated
1760 to one character each and the buttons in the button bar are made narrower.
1761 <br><dt>-coords/-xcoords or -showCoords true/false<dd><a name="index-coords_002c-option-334"></a><a name="index-showCoords_002c-option-335"></a>Sets the Show Coords menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1762 The <code>coordFont</code> option specifies what font to use.
1763 <br><dt>-autoraise/-xautoraise or -autoRaiseBoard true/false<dd><a name="index-autoraise_002c-option-336"></a><a name="index-autoRaiseBoard_002c-option-337"></a>Sets the Auto Raise Board menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1764 <br><dt>-autoflip/-xautoflip or -autoFlipView true/false<dd><a name="index-autoflip_002c-option-338"></a><a name="index-autoFlipView_002c-option-339"></a>Sets the Auto Flip View menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1765 <br><dt>-flip/-xflip or -flipView true/false<dd><a name="index-flip_002c-option-340"></a><a name="index-flipView_002c-option-341"></a>If Auto Flip View is not set, or if you are observing but not participating
1766 in a game, then the positioning of the board at the start of each game
1767 depends on the flipView option. If flipView is false (the default),
1768 the board is positioned so that the white pawns move from the bottom to the
1769 top; if true, the black pawns move from the bottom to the top.
1770 In any case, the Flip menu option (see <a href="#Options-Menu">Options Menu</a>)
1771 can be used to flip the board after
1773 <br><dt>-title/-xtitle or -titleInWindow true/false<dd><a name="index-title_002c-option-342"></a><a name="index-titleInWindow_002c-option-343"></a>If this option is true, XBoard displays player names (for ICS
1774 games) and game file names (for ‘<samp><span class="samp">Load Game</span></samp>’) inside its main
1775 window. If the option is false (the default), this information is
1776 displayed only in the window banner. You probably won't want to
1777 set this option unless the information is not showing up in the
1778 banner, as happens with a few X window managers.
1779 <br><dt>-buttons/-xbuttons or -showButtonBar True/False<dd><a name="index-buttons_002c-option-344"></a><a name="index-showButtonBar_002c-option-345"></a>If this option is False, xboard omits the [<<] [<] [P] [>] [>>] button
1780 bar from the window, allowing the message line to be wider. You can
1781 still get the functions of these buttons using the menus or their keyboard
1782 shortcuts. Default: true.
1783 <br><dt>-mono/-xmono or -monoMode true/false<dd><a name="index-mono_002c-option-346"></a><a name="index-monoMode_002c-option-347"></a>Determines whether XBoard displays its pieces and squares with
1784 two colors (true) or four (false). You shouldn't have to
1785 specify <code>monoMode</code>; XBoard will determine if it is necessary.
1786 <br><dt>-showTargetSquares true/false<dd><a name="index-showTargetSquares_002c-option-348"></a>Determines whether XBoard can highlight the squares a piece has
1787 legal moves to, when you grab that piece with the mouse.
1788 If this option is set, this feature can be controlled through
1789 the Highlight Dragging menu item.
1790 <br><dt>-flashCount count<dt>-flashRate rate<dt>-flash/-xflash<dd><a name="index-flashCount_002c-option-349"></a><a name="index-flashRate_002c-option-350"></a><a name="index-flash_002c-option-351"></a><a name="index-xflash_002c-option-352"></a>These options enable flashing of pieces when they
1791 land on their destination square.
1792 <code>flashCount</code>
1793 tells XBoard how many times to flash a piece after it
1794 lands on its destination square.
1795 <code>flashRate</code>
1796 controls the rate of flashing (flashes/sec).
1799 sets flashCount to 3.
1801 sets flashCount to 0.
1802 Defaults: flashCount=0 (no flashing), flashRate=5.
1803 <br><dt>-highlight/-xhighlight or -highlightLastMove true/false<dd><a name="index-highlight_002c-option-353"></a><a name="index-highlightLastMove_002c-option-354"></a>Sets the Highlight Last Move menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1804 <br><dt>-highlightMoveWithArrow true/false<dd><a name="index-highlight-Arrow_002c-option-355"></a><a name="index-highlightMoveWithArrow_002c-option-356"></a>Sets the Highlight with Arrow menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1805 <br><dt>-blind/-xblind or -blindfold true/false<dd><a name="index-blind_002c-option-357"></a><a name="index-blindfold_002c-option-358"></a>Sets the Blindfold menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1806 <br><dt>-clockFont font<dd><a name="index-clockFont_002c-option-359"></a><a name="index-Font_002c-clock-360"></a>The font used for the clocks. If the option value is a pattern
1807 that does not specify the font size, XBoard tries to choose an
1808 appropriate font for the board size being used.
1809 Default: -*-helvetica-bold-r-normal–*-*-*-*-*-*-*-*.
1810 <br><dt>-coordFont font<dd><a name="index-coordFont_002c-option-361"></a><a name="index-Font_002c-coordinates-362"></a>The font used for rank and file coordinate labels if <code>showCoords</code>
1811 is true. If the option value is a pattern that does not specify
1812 the font size, XBoard tries to choose an appropriate font for
1813 the board size being used.
1814 Default: -*-helvetica-bold-r-normal–*-*-*-*-*-*-*-*.
1815 <br><dt>-font font<dd><a name="index-font_002c-option-363"></a><a name="index-Font-364"></a>The font used for popup dialogs, menus, comments, etc.
1816 If the option value is a pattern that does not specify
1817 the font size, XBoard tries to choose an appropriate font for
1818 the board size being used.
1819 Default: -*-helvetica-medium-r-normal–*-*-*-*-*-*-*-*.
1820 <br><dt>-fontSizeTolerance tol<dd><a name="index-fontSizeTolerance_002c-option-365"></a>In the font selection algorithm, a nonscalable font will be preferred
1821 over a scalable font if the nonscalable font's size differs
1822 by <code>tol</code> pixels
1823 or less from the desired size. A value of -1 will force
1824 a scalable font to always be used if available; a value of 0 will
1825 use a nonscalable font only if it is exactly the right size;
1826 a large value (say 1000) will force a nonscalable font to always be
1827 used if available. Default: 4.
1828 <br><dt>-bm or -bitmapDirectory dir<dt>-pixmap or -pixmapDirectory dir<dd><a name="index-bm_002c-option-366"></a><a name="index-bitmapDirectory_002c-option-367"></a><a name="index-pixmap_002c-option-368"></a><a name="index-pixmapDirectory_002c-option-369"></a>These options control what piece images xboard uses. The XBoard
1829 distribution includes one set of pixmap pieces in xpm format, in the
1830 directory <samp><span class="file">pixmaps</span></samp>, and one set of bitmap pieces in xbm format,
1831 in the directory <samp><span class="file">bitmaps</span></samp>. Pixmap
1832 pieces give a better appearance on the screen: the white pieces have
1833 dark borders, and the black pieces have opaque internal details. With
1834 bitmaps, neither piece color has a border, and the internal details
1835 are transparent; you see the square color or other background color
1838 <p>If XBoard is configured and compiled on a system that includes libXpm,
1839 the X pixmap library, the xpm pixmap pieces are compiled in as the
1840 default. A different xpm piece set can be selected at runtime with
1841 the <code>pixmapDirectory</code> option, or a bitmap piece set can be selected
1842 with the <code>bitmapDirectory</code> option.
1844 <p>If XBoard is configured and compiled on a system that does not include
1845 libXpm (or the <code>--disable-xpm</code> option is given to the configure
1846 program), the bitmap pieces are compiled in as the default. It is not
1847 possible to use xpm pieces in this case, but pixmap pieces in another
1848 format called "xim" can be used by giving the <code>pixmapDirectory</code> option.
1849 Or again, a different bitmap piece set can be selected with the
1850 <code>bitmapDirectory</code> option.
1852 <p>Files in the <code>bitmapDirectory</code> must be named as follows:
1853 The first character of a piece bitmap name gives the piece it
1854 represents (‘<samp><span class="samp">p</span></samp>’, ‘<samp><span class="samp">n</span></samp>’, ‘<samp><span class="samp">b</span></samp>’, ‘<samp><span class="samp">r</span></samp>’, ‘<samp><span class="samp">q</span></samp>’, or ‘<samp><span class="samp">k</span></samp>’),
1855 the next characters give the size in pixels, the
1856 following character indicates whether the piece is
1857 solid or outline (‘<samp><span class="samp">s</span></samp>’ or ‘<samp><span class="samp">o</span></samp>’),
1858 and the extension is ‘<samp><span class="samp">.bm</span></samp>’.
1859 For example, a solid 80x80 knight would be named <samp><span class="file">n80s.bm</span></samp>.
1860 The outline bitmaps are used only in monochrome mode.
1861 If bitmap pieces are compiled in and the bitmapDirectory is missing
1862 some files, the compiled in pieces are used instead.
1864 <p>If the bitmapDirectory option is given,
1865 it is also possible to replace xboard's icons and menu checkmark,
1866 by supplying files named <samp><span class="file">icon_white.bm</span></samp>, <samp><span class="file">icon_black.bm</span></samp>, and
1867 <samp><span class="file">checkmark.bm</span></samp>.
1869 <p>For more information about pixmap pieces and how to get additional
1870 sets, see <a href="#zic2xpm">zic2xpm</a> below.
1871 <br><dt>-whitePieceColor color<dt>-blackPieceColor color<dt>-lightSquareColor color<dt>-darkSquareColor color<dt>-highlightSquareColor color<dt>-lowTimeWarningColor color<dd><a name="index-Colors-370"></a><a name="index-whitePieceColor_002c-option-371"></a><a name="index-blackPieceColor_002c-option-372"></a><a name="index-lightSquareColor_002c-option-373"></a><a name="index-darkSquareColor_002c-option-374"></a><a name="index-highlightSquareColor_002c-option-375"></a><a name="index-lowTimeWarningColor_002c-option-376"></a>Colors to use for the pieces, squares, and square highlights.
1874 <pre class="example"> -whitePieceColor #FFFFCC
1875 -blackPieceColor #202020
1876 -lightSquareColor #C8C365
1877 -darkSquareColor #77A26D
1878 -highlightSquareColor #FFFF00
1879 -premoveHighlightColor #FF0000
1880 -lowTimeWarningColor #FF0000
1882 <p>On a grayscale monitor you might prefer:
1884 <pre class="example"> -whitePieceColor gray100
1885 -blackPieceColor gray0
1886 -lightSquareColor gray80
1887 -darkSquareColor gray60
1888 -highlightSquareColor gray100
1889 -premoveHighlightColor gray70
1890 -lowTimeWarningColor gray70
1892 <br><dt>-drag/-xdrag or -animateDragging true/false<dd><a name="index-drag_002c-option-377"></a><a name="index-animateDragging_002c-option-378"></a>Sets the Animate Dragging menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1893 <br><dt>-animate/-xanimate or -animateMoving true/false<dd><a name="index-animate_002c-option-379"></a><a name="index-animateMoving_002c-option-380"></a>Sets the Animate Moving menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1894 <br><dt>-animateSpeed n<dd><a name="index-g_t_002danimateSpeed_002c-option-381"></a>Number of milliseconds delay between each animation frame when Animate
1896 <br><dt>-autoDisplayComment true/false<dt>-autoDisplayTags true/false<dd><a name="index-g_t_002dautoDisplayComment_002c-option-382"></a><a name="index-g_t_002dautoDisplayTags_002c-option-383"></a>If set to true, these options cause the window with the move comments,
1897 and the window with PGN tags, respectively, to pop up automatically when
1898 such tags or comments are encountered during the replaying a stored or
1899 loaded game. Default: true.
1900 <br><dt>-pasteSelection true/false<dd><a name="index-g_t_002dpasteSelection_002c-option-384"></a>If this option is set to true, the Paste Position and Paste Game
1901 options paste from the currently selected text. If false, they paste
1902 from the clipboard. Default: false.
1906 <a name="Adjudication-Options"></a>
1908 Next: <a rel="next" accesskey="n" href="#Other-options">Other options</a>,
1909 Previous: <a rel="previous" accesskey="p" href="#User-interface-options">User interface options</a>,
1910 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1914 <h3 class="section">3.6 Adjudication Options</h3>
1916 <p><a name="index-Options_002c-adjudication-385"></a>
1918 <dt>-adjudicateLossThreshold n<dd><a name="index-adjudicateLossThreshold_002c-option-386"></a>If the given value is non-zero, XBoard adjudicates the game as a loss
1919 if both engines agree for a duration of 6 consecutive ply that the score
1920 is below the given score threshold for that engine. Make sure the score
1921 is interpreted properly by XBoard,
1922 using <code>-firstScoreAbs</code> and <code>-secondScoreAbs</code> if needed.
1923 Default: 0 (no adjudication)
1924 <br><dt>-adjudicateDrawMoves n<dd><a name="index-adjudicateDrawMoves_002c-option-387"></a>If the given value is non-zero, XBoard adjudicates the game as a draw
1925 if after the given number of moves it was not yet decided. Default: 0 (no adjudication)
1926 <br><dt>-checkMates true/false<dd><a name="index-checkMates_002c-option-388"></a>If this option is set, XBoard detects all checkmates and stalemates,
1927 and ends the game as soon as they occur.
1928 Legality-testing must be switched on for this option to work.
1930 <br><dt>-testClaims true/false<dd><a name="index-testClaims_002c-option-389"></a>If this option is set, XBoard verifies all result claims made by engines,
1931 and those who send false claims will forfeit the game because of it.
1932 Legality-testing must be switched on for this option to work. Default: true
1933 <br><dt>-materialDraws true/false<dd><a name="index-materialDraws_002c-option-390"></a>If this option is set, XBoard adjudicates games as draws when there is
1934 no sufficient material left to inflict a checkmate.
1935 This applies to KBKB with like bishops (any number, actually), and to KBK, KNK and KK.
1936 Legality-testing must be switched on for this option to work. Default: true
1937 <br><dt>-trivialDraws true/false<dd><a name="index-trivialDraws_002c-option-391"></a>If this option is set, XBoard adjudicates games as draws that cannot be
1938 usually won without opponent cooperation. This applies to KBKB with unlike bishops,
1939 and to KBKN, KNKN, KNNK, KRKR and KQKQ. The draw is called after 6 ply into these end-games,
1940 to allow quick mates that can occur in some exceptional positions to be found by the engines.
1941 KQKQ does not really belong in this category, and might be taken out in the future.
1942 (When bitbase-based adjudications are implemented.)
1943 Legality-testing must be on for this option to work. Default: false
1944 <br><dt>-ruleMoves n<dd><a name="index-ruleMoves_002c-option-392"></a>If the given value is non-zero, XBoard adjudicates the game as a draw after the given
1945 number of consecutive reversible moves. Engine draw claims are always accepted after 50 moves,
1946 irrespective of the given value of n.
1947 <br><dt>-repeatsToDraw n<dd>If the given value is non-zero, xboard adjudicates the game as a draw if a position
1948 is repeated the given number of times. Engines draw claims are always accepted after 3 repeats,
1949 (on the 3rd occurrence, actually), irrespective of the value of n.
1950 Beware that positions that have different castling or en-passant rights do not count
1951 as repeats, XBoard is fully e.p. and castling aware!
1955 <a name="Other-options"></a>
1957 Previous: <a rel="previous" accesskey="p" href="#Adjudication-Options">Adjudication Options</a>,
1958 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1962 <h3 class="section">3.7 Other options</h3>
1964 <p><a name="index-Options_002c-miscellaneous-393"></a>
1966 <dt>-ncp/-xncp or -noChessProgram true/false<dd><a name="index-ncp_002c-option-394"></a><a name="index-noChessProgram_002c-option-395"></a>If this option is true, XBoard acts as a passive chessboard; it
1967 does not start a chess engine at all. Turning on this option
1968 also turns off clockMode. Default: false.
1969 <br><dt>-mode or -initialMode modename<dd><a name="index-mode_002c-option-396"></a><a name="index-initalMode_002c-option-397"></a>If this option is given, XBoard selects the given modename
1970 from the Mode menu after starting and (if applicable) processing the
1971 loadGameFile or loadPositionFile option. Default: "" (no selection).
1972 Other supported values are
1973 MachineWhite, MachineBlack, TwoMachines, Analysis,
1974 AnalyzeFile, EditGame, EditPosition, and Training.
1975 <br><dt>-variant varname<dd><a name="index-variant_002c-option-398"></a>Activates preliminary, partial support for playing chess variants
1976 against a local engine or editing variant games. This flag is not
1977 needed in ICS mode. Recognized variant names are:
1979 <pre class="example"> normal Normal chess
1980 wildcastle Shuffle chess, king can castle from d file
1981 nocastle Shuffle chess, no castling allowed
1982 fischerandom Fischer Random shuffle chess
1983 bughouse Bughouse, ICC/FICS rules
1984 crazyhouse Crazyhouse, ICC/FICS rules
1985 losers Lose all pieces or get mated (ICC wild 17)
1986 suicide Lose all pieces including king (FICS)
1987 giveaway Try to have no legal moves (ICC wild 26)
1988 twokings Weird ICC wild 9
1989 kriegspiel Opponent's pieces are invisible
1990 atomic Capturing piece explodes (ICC wild 27)
1991 3check Win by giving check 3 times (ICC wild 25)
1992 shatranj An ancient precursor of chess (ICC wild 28)
1993 xiangqi Chinese Chess (on a 9x10 board)
1994 shogi Japanese Chess (on a 9x9 board & piece drops)
1995 capablanca Capablanca Chess (10x8 board, with Archbishop
1996 and Chancellor pieces)
1997 gothic similar, with a better initial position
1998 caparandom An FRC-like version of Capablanca Chess (10x8)
1999 janus A game with two Archbishops (10x8 board)
2000 courier Medieval intermediate between shatranj and
2001 modern Chess (on 12x8 board)
2002 falcon Patented 10x8 variant with two Falcon pieces
2003 berolina Pawns capture straight ahead, and move diagonal
2004 cylinder Pieces wrap around the board edge
2005 knightmate King moves as Knight, and vice versa
2006 super Superchess (shuffle variant with 4 exo-pieces)
2007 makruk Thai Chess (shatranj-like, P promotes on 6th rank)
2008 spartan Spartan Chess (black has unorthodox pieces)
2009 fairy A catchall variant in which all piece types
2010 known to XBoard can participate (8x8)
2011 unknown Catchall for other unknown variants
2013 <p>NOT ALL BOARDSIZES PROVIDE A COMPLETE SET OF BUILT-IN BITMAPS FOR ALL
2014 UN-ORTHODOX PIECES, though. Only in <code>boardSize</code> middling and bulky
2015 all 22 piece types are provided, while -boardSize petite has most
2016 of them. Archbishop, Chancellor and Amazon are supported in every
2017 size from petite to bulky. Kings or Amazons are substituted for
2018 missing bitmaps. You can still play variants needing un-orthodox
2019 pieces in other board sizes providing your own bitmaps through the
2020 <code>bitmapDirectory</code> or <code>pixmapDirectory</code> options.
2022 <p>In the shuffle variants, XBoard now does shuffle the pieces, although
2023 you can still do it by hand using Edit Position. Some variants are
2024 supported only in ICS mode, including bughouse, and
2025 kriegspiel. The winning/drawing conditions in crazyhouse (off-board
2026 interposition on mate) are not fully understood, but losers, suicide,
2027 giveaway, atomic, and 3check should be OK.
2028 Berolina and cylinder chess can only be played with legality testing off.
2029 In crazyhouse, XBoard now does keep
2030 track of off-board pieces. In shatranj it does implement the baring
2031 rule when mate detection is switched on.
2032 <br><dt>-boardHeight N<dd><a name="index-boardHeight_002c-option-399"></a>Allows you to set a non-standard number of board ranks in any variant.
2033 If the height is given as -1, the default height for the variant is used.
2035 <br><dt>-boardWidth N<dd><a name="index-boardWidth_002c-option-400"></a>Allows you to set a non-standard number of board files in any variant.
2036 If the width is given as -1, the default width for the variant is used.
2037 With a non-standard width, the initial position will always be an empty board,
2038 as the usual opening array will not fit.
2040 <br><dt>-holdingsSize N<dd><a name="index-holdingsSize_002c-option-401"></a>Allows you to set a non-standard size for the holdings in any variant.
2041 If the size is given as -1, the default holdings size for the variant is used.
2042 The first N piece types will go into the holdings on capture, and you will be
2043 able to drop them on the board in stead of making a normal move. If size equals 0,
2044 there will be no holdings.
2046 <br><dt>-defaultFrcPosition N<dd><a name="index-defaultFrcPosition_002c-option-402"></a>Specifies the number of the opening position in shuffle games like Chess960.
2047 A value of -1 means the position is randomly generated by XBoard
2048 at the beginning of every game.
2050 <br><dt>-pieceToSquareTable string<dd><a name="index-pieceToSquareTable_002c-option-403"></a>The characters that are used to represent the piece types XBoard knows in FEN
2051 diagrams and SAN moves. The string argument has to have an even length
2052 (or it will be ignored), as white and black pieces have to be given separately
2053 (in that order). The last letter for each color will be the King.
2054 The letters before that will be PNBRQ and then a whole host of fairy pieces
2055 in an order that has not fully crystallized yet (currently FEACWMOHIJGDVSLU,
2056 F=Ferz, Elephant, A=Archbishop, C=Chancellor, W=Wazir, M=Commoner, O=Cannon,
2057 H=Nightrider). You should list at least all pieces that occur in the variant
2058 you are playing. If you have less than 44 characters in the string, the pieces
2059 not mentioned will get assigned a period, and you will not be able to distinguish
2060 them in FENs. You can also explicitly assign pieces a period, in which case they
2061 will not be counted in deciding which captured pieces can go into the holdings.
2062 A tilde '~' as a piece name does mean this piece is used to represent a promoted
2063 Pawn in crazyhouse-like games, i.e. on capture it turns back onto a Pawn.
2064 A '+' similarly indicates the piece is a shogi-style promoted piece, that should
2065 revert to its non-promoted version on capture (rather than to a Pawn).
2066 Note that promoted pieces are represented by pieces 11 further in the list.
2067 You should not have to use this option often: each variant has its own default
2068 setting for the piece representation in FEN, which should be sufficient in normal use.
2070 <br><dt>-debug/-xdebug or -debugMode true/false<dd><a name="index-debug_002c-option-404"></a><a name="index-debugMode_002c-option-405"></a>Turns on debugging printout.
2071 <br><dt>-debugFile filename or -nameOfDebugFile filename<dd><a name="index-debugFile_002c-option-406"></a><a name="index-nameOfDebugFile_002c-option-407"></a>Sets the name of the file to which XBoard saves debug information
2072 (including all communication to and from the engines).
2073 <br><dt>-engineDebugOutput number<dd><a name="index-engineDebugOutput_002c-option-408"></a>Specifies how XBoard should handle unsolicited output from the engine,
2074 with respect to saving it in the debug file.
2075 The output is further (hopefully) ignored.
2076 If number=0, XBoard refrains from writing such spurious output to the debug file.
2077 If number=1, all engine output is written faithfully to the debug file.
2078 If number=2, any protocol-violating line is prefixed with a '#' character,
2079 as the engine itself should have done if it wanted to submit info for inclusion in the debug file.
2080 This option is provided for the benefit of applications that use the debug file
2081 as a source of information, such as the broadcaster of live games TLCV / TLCS.
2082 Such applications can be protected from spurious engine output that might otherwise confuse them.
2083 <br><dt>-rsh or -remoteShell shell-name<dd><a name="index-rsh_002c-option-409"></a><a name="index-remoteShell_002c-option-410"></a>Name of the command used to run programs remotely. The default
2084 is <samp><span class="file">rsh</span></samp> or <samp><span class="file">remsh</span></samp>, determined when XBoard is
2085 configured and compiled.
2086 <br><dt>-ruser or -remoteUser user-name<dd><a name="index-ruser_002c-option-411"></a><a name="index-remoteUser_002c-option-412"></a>User name on the remote system when running programs with the
2087 <code>remoteShell</code>. The default is your local user name.
2088 <br><dt>-userName username<dd><a name="index-userName_002c-option-413"></a>Name under which the Human player will be listed in the PGN file.
2089 Default is the login name on your local computer.
2090 <br><dt>-delayBeforeQuit number<dt>-delayAfterQuit number<dd><a name="index-delayBeforeQuit_002c-option-414"></a><a name="index-delayAfterQuit_002c-option-415"></a>These options specify how long XBoard has to wait before sending a termination signal to rogue engine processes, that do not want to react to the 'quit' command. The second one determines the pause after killing the engine, to make sure it dies.
2095 <a name="Chess-Servers"></a>
2097 Next: <a rel="next" accesskey="n" href="#Firewalls">Firewalls</a>,
2098 Previous: <a rel="previous" accesskey="p" href="#Options">Options</a>,
2099 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2103 <h2 class="chapter">4 Chess Servers</h2>
2105 <p><a name="index-ICS-416"></a><a name="index-ICS_002c-addresses-417"></a><a name="index-Internet-Chess-Server-418"></a>An <dfn>Internet Chess Server</dfn>, or <dfn>ICS</dfn>, is a place on the
2106 Internet where people can get together to play chess, watch other
2107 people's games, or just chat. You can use either <code>telnet</code> or a
2108 client program like XBoard to connect to the server. There are
2109 thousands of registered users on the different ICS hosts, and it is
2110 not unusual to meet 200 on both chessclub.com and freechess.org.
2112 <p>Most people can just type <kbd>xboard -ics</kbd> to start XBoard as an ICS
2113 client. Invoking XBoard in this way connects you to the Internet
2114 Chess Club (ICC), a commercial ICS. You can log in there as a guest
2115 even if you do not have a paid account. To connect to the largest
2116 Free ICS (FICS), use the command <kbd>xboard -ics -icshost freechess.org</kbd>
2117 instead, or substitute a different host name to connect to your
2119 For a full description of command-line options that control
2120 the connection to ICS and change the default values of ICS options, see
2121 <a href="#ICS-options">ICS options</a>.
2123 <p>While you are running XBoard as an ICS client,
2124 you use the terminal window that you started XBoard from
2125 as a place to type in commands and read information that is
2126 not available on the chessboard.
2128 <p>The first time you need to use the terminal is to enter your login name
2129 and password, if you are a registered player. (You don't need to do
2130 this manually; the <code>icsLogon</code> option can do it for you.
2131 see <a href="#ICS-options">ICS options</a>.) If you are not registered,
2132 enter <kbd>g</kbd> as your name, and the server will pick a
2133 unique guest name for you.
2135 <p>Some useful ICS commands
2138 <dt><kbd>help <topic></kbd><dd><a name="index-help_002c-ICS-command-419"></a>to get help on the given <topic>. To get a list of possible topics type
2139 <dfn>help</dfn> without topic. Try the help command before you ask other
2140 people on the server for help.
2142 <p>For example <kbd>help register</kbd> tells you how to become a registered
2144 <br><dt><kbd>who <flags></kbd><dd><a name="index-who_002c-ICS-command-420"></a>to see a list of people who are logged on. Administrators
2145 (people you should talk to if you have a problem) are marked
2146 with the character ‘<samp><span class="samp">*</span></samp>’, an asterisk. The <flags> allow you to
2147 display only selected players: For example, <kbd>who of</kbd> shows a
2148 list of players who are interested in playing but do not have
2150 <br><dt><kbd>games</kbd><dd><a name="index-games_002c-ICS-command-421"></a>to see what games are being played
2151 <br><dt><kbd>match <player> [<mins>] [<inc>]</kbd><dd>to challenge another player to a game. Both opponents get <mins> minutes
2152 for the game, and <inc> seconds will be added after each move.
2153 If another player challenges you, the server asks if you want to
2154 accept the challenge; use the <kbd>accept</kbd> or <kbd>decline</kbd> commands
2156 <br><dt><kbd>accept</kbd><dt><kbd>decline</kbd><dd><a name="index-accept_002c-ICS-command-422"></a><a name="index-decline_002c-ICS-command-423"></a>to accept or decline another player's offer.
2157 The offer may be to start a new game, or to agree to a
2158 <kbd>draw</kbd>, <kbd>adjourn</kbd> or <kbd>abort</kbd> the current game. See <a href="#Action-Menu">Action Menu</a>.
2160 <p>If you have more than one pending offer (for example, if more than one player
2161 is challenging you, or if your opponent offers both a draw and to adjourn the
2162 game), you have to supply additional information, by typing something
2163 like <kbd>accept <player></kbd>, <kbd>accept draw</kbd>, or <kbd>draw</kbd>.
2164 <br><dt><kbd>draw</kbd><dt><kbd>adjourn</kbd><dt><kbd>abort</kbd><dd><a name="index-draw_002c-ICS-command-424"></a><a name="index-adjourn_002c-ICS-command-425"></a><a name="index-abort_002c-ICS-command-426"></a>asks your opponent to terminate a game by mutual agreement. Adjourned
2165 games can be continued later.
2166 Your opponent can either <kbd>decline</kbd> your offer or accept it (by typing the
2167 same command or typing <kbd>accept</kbd>). In some cases these commands work
2168 immediately, without asking your opponent to agree. For example, you can
2169 abort the game unilaterally if your opponent is out of time, and you can claim
2170 a draw by repetition or the 50-move rule if available simply by typing
2172 <br><dt><kbd>finger <player></kbd><dd><a name="index-finger_002c-ICS-command-427"></a>to get information about the given <player>. (Default: yourself.)
2173 <br><dt><kbd>vars</kbd><dd><a name="index-vars_002c-ICS-command-428"></a>to get a list of personal settings
2174 <br><dt><kbd>set <var> <value></kbd><dd><a name="index-set_002c-ICS-command-429"></a>to modify these settings
2175 <br><dt><kbd>observe <player></kbd><dd><a name="index-observe_002c-ICS-command-430"></a>to observe an ongoing game of the given <player>.
2176 <br><dt><kbd>examine</kbd><dt><kbd>oldmoves</kbd><dd><a name="index-examine_002c-ICS-command-431"></a><a name="index-oldmoves_002c-ICS-command-432"></a>to review a recently completed game
2179 <p>Some special XBoard features are activated when you are
2180 in examine mode on ICS. See the descriptions of the menu commands
2181 ‘<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>’,
2182 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
2183 <a href="#Action-Menu">Action Menu</a>.
2186 <a name="Firewalls"></a>
2188 Next: <a rel="next" accesskey="n" href="#Environment">Environment</a>,
2189 Previous: <a rel="previous" accesskey="p" href="#Chess-Servers">Chess Servers</a>,
2190 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2194 <h2 class="chapter">5 Firewalls</h2>
2196 <p>By default, XBoard communicates with an Internet Chess Server
2197 by opening a TCP socket directly from the machine it is running on
2198 to the ICS. If there is a firewall between your machine and the ICS,
2199 this won't work. Here are some recipes for getting around common
2200 kinds of firewalls using special options to XBoard.
2201 Important: See the paragraph in the below about extra echoes, in
2202 <a href="#Limitations">Limitations</a>.
2204 <p>Suppose that you can't telnet directly to ICS, but you can telnet
2205 to a firewall host, log in, and then telnet from there to ICS.
2206 Let's say the firewall is called ‘<samp><span class="samp">firewall.example.com</span></samp>’. Set
2207 command-line options as follows:
2209 <pre class="example"> xboard -ics -icshost firewall.example.com -icsport 23
2211 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2213 <pre class="example"> XBoard*internetChessServerHost: firewall.example.com
2214 XBoard*internetChessServerPort: 23
2216 <p class="noindent">Then when you run XBoard in ICS mode, you will be prompted
2217 to log in to the firewall host. This works because port 23 is the
2218 standard telnet login service. Do so, then telnet to ICS, using a
2219 command like ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’, or whatever command
2220 the firewall provides for telnetting to port 5000.
2222 <p>If your firewall lets you telnet (or rlogin) to remote hosts but
2223 doesn't let you telnet to port 5000, you may be able to connect to the
2224 chess server on port 23 instead, which is the port the telnet program
2225 uses by default. Some chess servers support this (including
2226 chessclub.com and freechess.org), while some do not.
2228 <p>If your chess server does not allow connections on port 23 and your
2229 firewall does not allow you to connect to other ports, you may be able
2230 to connect by hopping through another host outside the firewall that
2231 you have an account on. For instance, suppose you have a shell
2232 account at ‘<samp><span class="samp">foo.edu</span></samp>’. Follow the recipe above, but instead of
2233 typing ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’ to the firewall, type
2234 ‘<samp><span class="samp">telnet foo.edu</span></samp>’ (or ‘<samp><span class="samp">rlogin foo.edu</span></samp>’), log in there, and
2235 then type ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’.
2237 <p>Suppose that you can't telnet directly to ICS, but you can use rsh
2238 to run programs on a firewall host, and that host can telnet to ICS.
2239 Let's say the firewall is called ‘<samp><span class="samp">rsh.example.com</span></samp>’. Set
2240 command-line options as follows:
2242 <pre class="example"> xboard -ics -gateway rsh.example.com -icshost chessclub.com
2244 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2246 <pre class="example"> XBoard*gateway: rsh.example.com
2247 XBoard*internetChessServerHost: chessclub.com
2249 <p>Then when you run XBoard in ICS mode, it will connect to
2250 the ICS by using <samp><span class="file">rsh</span></samp> to run the command
2251 ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’ on host ‘<samp><span class="samp">rsh.example.com</span></samp>’.
2253 <p>Suppose that you can telnet anywhere you want, but you have to
2254 run a special program called <samp><span class="file">ptelnet</span></samp> to do so.
2256 <p>First, we'll consider the easy case, in which
2257 ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ gets you to the chess server.
2258 In this case set command line options as follows:
2260 <pre class="example"> xboard -ics -telnet -telnetProgram ptelnet
2262 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2264 <pre class="example"> XBoard*useTelnet: true
2265 XBoard*telnetProgram: ptelnet
2267 <p class="noindent">Then when you run XBoard in ICS mode, it will issue the
2268 command ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ to connect to the ICS.
2270 <p>Next, suppose that ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ doesn't work;
2271 that is, your <samp><span class="file">ptelnet</span></samp> program doesn't let you connect to
2272 alternative ports. As noted above, your chess server may allow you to
2273 connect on port 23 instead. In that case, just add the option
2274 ‘<samp><span class="samp">-icsport ""</span></samp>’ to the above command, or add
2275 ‘<samp><span class="samp">XBoard*internetChessServerPort:</span></samp>’ to your <samp><span class="file">.Xresources</span></samp> file.
2276 But if your chess server doesn't let you connect on port 23, you will have
2277 to find some other host outside the firewall and hop through it. For
2278 instance, suppose you have a shell account at ‘<samp><span class="samp">foo.edu</span></samp>’. Set
2279 command line options as follows:
2281 <pre class="example"> xboard -ics -telnet -telnetProgram ptelnet -icshost foo.edu -icsport ""
2283 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2285 <pre class="example"> XBoard*useTelnet: true
2286 XBoard*telnetProgram: ptelnet
2287 XBoard*internetChessServerHost: foo.edu
2288 XBoard*internetChessServerPort:
2290 <p class="noindent">Then when you run XBoard in ICS mode, it will issue the
2291 command ‘<samp><span class="samp">ptelnet foo.edu</span></samp>’ to connect to your account at
2292 ‘<samp><span class="samp">foo.edu</span></samp>’. Log in there, then type ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’.
2294 <p>ICC timestamp and FICS timeseal do not work through some
2295 firewalls. You can use them only if your firewall gives a clean TCP
2296 connection with a full 8-bit wide path. If your firewall allows you
2297 to get out only by running a special telnet program, you can't use
2298 timestamp or timeseal across it. But if you have access to a
2299 computer just outside your firewall, and you have much lower netlag
2300 when talking to that computer than to the ICS, it might be worthwhile
2301 running timestamp there. Follow the instructions above for hopping
2302 through a host outside the firewall (foo.edu in the example),
2303 but run timestamp or timeseal on that host instead of telnet.
2305 <p>Suppose that you have a SOCKS firewall that will give you a clean
2306 8-bit wide TCP connection to the chess server, but only after you
2307 authenticate yourself via the SOCKS protocol. In that case, you could
2308 make a socksified version of XBoard and run that. If you are using
2309 timestamp or timeseal, you will to socksify it, not XBoard; this may
2310 be difficult seeing that ICC and FICS do not provide source code for
2311 these programs. Socksification is beyond the scope of this document,
2312 but see the SOCKS Web site at http://www.socks.permeo.com/.
2313 If you are missing SOCKS, try http://www.funbureau.com/.
2316 <a name="Environment"></a>
2318 Next: <a rel="next" accesskey="n" href="#Limitations">Limitations</a>,
2319 Previous: <a rel="previous" accesskey="p" href="#Firewalls">Firewalls</a>,
2320 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2324 <h2 class="chapter">6 Environment variables</h2>
2326 <p><a name="index-Environment-variables-433"></a><a name="index-CHESSDIR-434"></a>Game and position files are found in a directory named by the
2327 <code>CHESSDIR</code> environment variable. If this variable is not set, the
2328 current working directory is used. If <code>CHESSDIR</code> is set,
2329 XBoard actually changes its working directory to
2330 <code>$CHESSDIR</code>, so any files written by the chess engine
2331 will be placed there too.
2334 <a name="Limitations"></a>
2336 Next: <a rel="next" accesskey="n" href="#Problems">Problems</a>,
2337 Previous: <a rel="previous" accesskey="p" href="#Environment">Environment</a>,
2338 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2342 <h2 class="chapter">7 Limitations and known bugs</h2>
2344 <p><a name="index-Limitations-435"></a><a name="index-Bugs-436"></a>There is no way for two people running copies of XBoard to play
2345 each other without going through an Internet Chess Server.
2347 <p>Under some circumstances, your ICS password may be echoed when you log on.
2349 <p>If you are connecting to the ICS by running telnet on an Internet
2350 provider or firewall host, you may find that each line you type is
2351 echoed back an extra time after you hit <Enter>. If your Internet
2352 provider is a Unix system, you can probably turn its echo off by
2353 typing <kbd>stty -echo</kbd> after you log in, and/or typing
2354 <^E><Enter> (Ctrl+E followed by the Enter key) to the telnet
2355 program after you have logged into ICS. It is a good idea to do this
2356 if you can, because the extra echo can occasionally confuse XBoard's
2359 <p>The game parser recognizes only algebraic notation.
2361 <p>Many of the following points used to be limitations in XBoard 4.2.7 and earlier,
2363 The internal move legality tester in XBoard 4.3.xx does look at the game history,
2364 and is fully aware of castling or en-passant-capture rights. It permits castling with
2365 the king on the d file because this is possible in some "wild 1" games on ICS.
2366 The piece-drop menu does not check piece drops in bughouse to see if you actually hold
2367 the piece you are trying to drop. But this way of dropping pieces should be considered
2368 an obsolete feature, now that pieces can be dropped by dragging them from the holdings
2369 to the board. Anyway, if you would attempt an illegal move when using a chess engine or the ICS,
2370 XBoard will accept the error message that comes back, undo the move, and let you try another.
2371 FEN positions saved by XBoard do include correct information about whether castling or
2372 en passant are legal, and also handle the 50-move counter.
2373 The mate detector does not understand that non-contact mate is not really mate in bughouse.
2374 The only problem this causes while playing is minor: a "#" (mate indicator) character will
2375 show up after a non-contact mating move in the move list. XBoard will not assume the game
2376 is over at that point, not even when the option Detect Mates is on.
2377 Edit Game mode always uses the rules of the selected variant,
2378 which can be a variant that uses piece drops.
2379 You can load and edit games that contain piece drops.
2380 The (obsolete) piece menus are not active,
2381 but you can perform piece drops by dragging pieces from the holdings.
2382 Fischer Random castling is fully understood.
2383 You can enter castlings by dragging the King on top of your Rook.
2384 You can probably also play Fischer Random successfully on ICS by typing
2385 castling moves into the ICS Interaction window.
2387 <p>The menus may not work if your keyboard is in Caps Lock or Num Lock mode.
2388 This seems to be a problem with the Athena menu widget,
2391 <p>Also see the ToDo file included with the distribution for many other
2392 possible bugs, limitations, and ideas for improvement that have been
2395 <a name="Problems"></a>
2397 Next: <a rel="next" accesskey="n" href="#Contributors">Contributors</a>,
2398 Previous: <a rel="previous" accesskey="p" href="#Limitations">Limitations</a>,
2399 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2403 <h2 class="chapter">8 Reporting problems</h2>
2405 <p><a name="index-Bugs-437"></a><a name="index-Bug-reports-438"></a><a name="index-Reporting-bugs-439"></a><a name="index-Problems-440"></a><a name="index-Reporting-problems-441"></a>
2406 You can report bugs and problems with XBoard using
2407 the bug tracker at <code>https://savannah.gnu.org/projects/xboard/</code>
2408 or by sending mail to <code><bug-xboard@gnu.org></code>. It can also
2409 be useful to report or discuss bugs in the WinBoard Forum at
2410 <code>http://www.open-aurec.com/wbforum/</code>,
2411 WinBoard development section.
2413 <p>Please use the <samp><span class="file">script</span></samp> program to start a typescript, run
2414 XBoard with the ‘<samp><span class="samp">-debug</span></samp>’ option, and include the typescript
2415 output in your message.
2416 Also tell us what kind of machine and what operating system version
2417 you are using. The command ‘<samp><span class="samp">uname -a</span></samp>’ will often tell you this.
2419 <p>If you improve XBoard, please send a message about your changes,
2420 and we will get in touch with you about merging them in
2421 to the main line of development.
2424 <a name="Contributors"></a>
2426 Next: <a rel="next" accesskey="n" href="#CMail">CMail</a>,
2427 Previous: <a rel="previous" accesskey="p" href="#Problems">Problems</a>,
2428 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2432 <h2 class="chapter">9 Authors and contributors</h2>
2434 <p><a name="index-Authors-442"></a><a name="index-Contributors-443"></a>
2435 Chris Sears and Dan Sears wrote the original XBoard. They were
2436 responsible for versions 1.0 through 1.2. The color scheme was taken
2437 from Wayne Christopher's <code>XChess</code> program.
2439 <p>Tim Mann was primarily responsible for XBoard versions 1.3 through
2440 4.2.7, and for WinBoard (a port of XBoard to Microsoft Win32) from its
2441 inception through version 4.2.7.
2443 <p>John Chanak contributed the initial implementation of ICS mode. Evan
2444 Welsh wrote <code>CMail</code>, and Patrick Surry helped in designing,
2445 testing, and documenting it. Elmar Bartel contributed the new piece
2446 bitmaps introduced in version 3.2. Jochen Wiedmann converted the
2447 documentation to texinfo. Frank McIngvale added click/click moving,
2448 the Analysis modes, piece flashing, ZIICS import, and ICS text
2449 colorization to XBoard. Hugh Fisher added animated piece movement to
2450 XBoard, and Henrik Gram added it to WinBoard. Mark Williams
2451 contributed the initial (WinBoard-only) implementation of many new
2452 features added to both XBoard and WinBoard in version 4.1.0, including
2453 copy/paste, premove, icsAlarm, autoFlipView, training mode, auto
2454 raise, and blindfold. Ben Nye contributed X copy/paste code for
2457 <p>In a fork from version 4.2.7, Alessandro Scotti added many elements to
2458 the user interface of WinBoard, including the board textures and
2459 font-based rendering, the evaluation-graph, move-history and
2460 engine-output window. He was also responsible for adding the UCI
2463 <p>H. G. Muller continued this fork of the project, producing version
2464 4.3. He made WinBoard castling- and e.p.-aware, added variant support
2465 with adjustable board sizes, the crazyhouse holdings, and the fairy
2466 pieces. In addition he added most of the adjudication options, made
2467 WinBoard more robust in dealing with buggy and crashing engines, and
2468 extended time control with a time-odds and node-count-based modes.
2469 Most of the options that initially were WinBoard only have now been
2470 back-ported to XBoard.
2472 <p>Michel van den Bergh provided the code for reading Polyglot opening books.
2474 <p>Meanwhile, some work continued on the GNU XBoard project maintained at
2475 savannah.gnu.org, but version 4.2.8 was never released. Daniel
2476 Mehrmann was responsible for much of this work.
2478 <p>Most recently, Arun Persaud worked with H. G. Muller to merge all
2479 the features of the never-released XBoard/WinBoard 4.2.8 of the GNU
2480 XBoard project and the never-released 4.3.16 from H. G.'s fork into a
2481 unified XBoard/WinBoard 4.4, which is now available both from the
2482 savannah.gnu.org web site and the WinBoard forum.
2485 <a name="CMail"></a>
2487 Next: <a rel="next" accesskey="n" href="#Other-programs">Other programs</a>,
2488 Previous: <a rel="previous" accesskey="p" href="#Contributors">Contributors</a>,
2489 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2493 <h2 class="chapter">10 CMail</h2>
2495 <p><a name="index-cmail-444"></a>The <samp><span class="file">cmail</span></samp> program can help you play chess by email with opponents of
2496 your choice using XBoard as an interface.
2498 <p>You will usually run <samp><span class="file">cmail</span></samp> without giving any options.
2501 <li><a accesskey="1" href="#CMail-options">CMail options</a>: Invoking CMail.
2502 <li><a accesskey="2" href="#CMail-game">CMail game</a>: Starting a CMail game.
2503 <li><a accesskey="3" href="#CMail-answer">CMail answer</a>: Answering a move.
2504 <li><a accesskey="4" href="#CMail-multi">CMail multi</a>: Multiple games in one message.
2505 <li><a accesskey="5" href="#CMail-completion">CMail completion</a>: Completing a game.
2506 <li><a accesskey="6" href="#CMail-trouble">CMail trouble</a>: Known CMail problems.
2510 <a name="CMail-options"></a>
2512 Next: <a rel="next" accesskey="n" href="#CMail-game">CMail game</a>,
2513 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
2517 <h3 class="section">10.1 CMail options</h3>
2520 <dt>-h<dd>Displays <samp><span class="file">cmail</span></samp> usage information.
2521 <br><dt>-c<dd>Shows the conditions of the GNU General Public License.
2522 See <a href="#Copying">Copying</a>.
2523 <br><dt>-w<dd>Shows the warranty notice of the GNU General Public License.
2524 See <a href="#Copying">Copying</a>.
2525 <br><dt>-v<dt>-xv<dd>Provides or inhibits verbose output from <samp><span class="file">cmail</span></samp> and XBoard,
2526 useful for debugging. The
2528 form also inhibits the cmail introduction message.
2529 <br><dt>-mail<dt>-xmail<dd>Invokes or inhibits the sending of a mail message containing the move.
2530 <br><dt>-xboard<dt>-xxboard<dd>Invokes or inhibits the running of XBoard on the game file.
2531 <br><dt>-reuse<dt>-xreuse<dd>Invokes or inhibits the reuse of an existing XBoard to display the
2533 <br><dt>-remail<dd>Resends the last mail message for that game. This inhibits running
2535 <br><dt>-game <name><dd>The name of the game to be processed.
2536 <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
2537 white and none as black. If only one color is specified then none of the
2538 other color is assumed. If no color is specified then equal numbers of
2539 White and Black games are started, with the extra game being as White if an
2540 odd number of total games is specified.
2541 <br><dt>-me <short name><dt>-opp <short name><dd>A one-word alias for yourself or your opponent.
2542 <br><dt>-wname <full name><dt>-bname <full name><dt>-name <full name><dt>-oppname <full name><dd>The full name of White, Black, yourself or your opponent.
2543 <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.
2544 <br><dt>-dir <directory><dd>The directory in which <samp><span class="file">cmail</span></samp> keeps its files. This defaults to the
2545 environment variable <code>$CMAIL_DIR</code> or failing that, <code>$CHESSDIR</code>,
2546 <samp><span class="file">$HOME/Chess</span></samp> or <samp><span class="file">~/Chess</span></samp>. It will be created if it does not exist.
2547 <br><dt>-arcdir <directory><dd>The directory in which <samp><span class="file">cmail</span></samp> archives completed games. Defaults to
2548 the environment variable <code>$CMAIL_ARCDIR</code> or, in its absence, the same
2549 directory as cmail keeps its working files (above).
2550 <br><dt>-mailprog <mail program><dd>The program used by cmail to send email messages. This defaults to the
2551 environment variable <code>$CMAIL_MAILPROG</code> or failing that
2552 <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
2553 to set this variable if none of the above paths fit your system.
2554 <br><dt>-logFile <file><dd>A file in which to dump verbose debugging messages that are invoked with
2555 the ‘<samp><span class="samp">-v</span></samp>’
2557 <br><dt>-event <event><dd>The PGN Event tag (default ‘<samp><span class="samp">Email correspondence game</span></samp>’).
2558 <br><dt>-site <site><dd>The PGN Site tag (default ‘<samp><span class="samp">NET</span></samp>’).
2559 <br><dt>-round <round><dd>The PGN Round tag (default ‘<samp><span class="samp">-</span></samp>’, not applicable).
2560 <br><dt>-mode <mode><dd>The PGN Mode tag (default ‘<samp><span class="samp">EM</span></samp>’, Electronic Mail).
2561 <br><dt>Other options<dd>Any option flags not listed above are passed through to XBoard.
2562 Invoking XBoard through CMail changes the default values of two XBoard
2563 options: The default value for ‘<samp><span class="samp">-noChessProgram</span></samp>’ is changed to
2564 true; that is, by default no chess engine is started. The default
2565 value for ‘<samp><span class="samp">-timeDelay</span></samp>’ is changed to 0; that is, by default
2566 XBoard immediately goes to the end of the game as played so far,
2567 rather than stepping through the moves one by one. You can still set
2568 these options to whatever values you prefer by supplying them on
2569 CMail's command line. See <a href="#Options">Options</a>.
2573 <a name="CMail-game"></a>
2575 Next: <a rel="next" accesskey="n" href="#CMail-answer">CMail answer</a>,
2576 Previous: <a rel="previous" accesskey="p" href="#CMail-options">CMail options</a>,
2577 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
2581 <h3 class="section">10.2 Starting a CMail Game</h3>
2583 <p>Type <samp><span class="file">cmail</span></samp> from a shell to start a game as white. After an opening
2584 message, you will be prompted for a game name, which is optional—if you
2585 simply press <Enter>, the game name will take the form
2586 ‘<samp><span class="samp">you-VS-opponent</span></samp>’. You will next be prompted for the short name
2587 of your opponent. If you haven't played this person before, you will also
2588 be prompted for his/her email address. <samp><span class="file">cmail</span></samp> will then invoke
2589 XBoard in the background. Make your first move and select
2590 ‘<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,
2591 <samp><span class="file">cmail</span></samp> will mail a copy of the move to your opponent. If you select
2592 ‘<samp><span class="samp">Exit</span></samp>’ without having selected ‘<samp><span class="samp">Mail Move</span></samp>’ then no move will be
2596 <a name="CMail-answer"></a>
2598 Next: <a rel="next" accesskey="n" href="#CMail-multi">CMail multi</a>,
2599 Previous: <a rel="previous" accesskey="p" href="#CMail-game">CMail game</a>,
2600 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
2604 <h3 class="section">10.3 Answering a Move</h3>
2606 <p>When you receive a message from an opponent containing a move in one of
2607 your games, simply pipe the message through <samp><span class="file">cmail</span></samp>. In some mailers
2608 this is as simple as typing <kbd>| cmail</kbd> when viewing the message, while in
2609 others you may have to save the message to a file and do <kbd>cmail < file</kbd>
2610 at the command line. In either case <samp><span class="file">cmail</span></samp> will display the game using
2611 XBoard. If you didn't exit XBoard when you made your first move
2612 then <samp><span class="file">cmail</span></samp> will do its best to use the existing XBoard instead
2613 of starting a new one. As before, simply make a move and select
2614 ‘<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>
2616 XBoard that was most recently used to display the current game. This
2617 means that many games can be in progress simultaneously, each with its own
2620 <p>If you want to look at the history or explore a variation, go ahead, but
2621 you must return to the current position before XBoard will allow you
2622 to mail a move. If you edit the game's history you must select
2623 ‘<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
2624 position, then make the move you want and select ‘<samp><span class="samp">Mail Move</span></samp>’.
2625 As before, if you decide you aren't ready to make a move just yet you can
2626 either select ‘<samp><span class="samp">Exit</span></samp>’ without sending a move or just leave
2627 XBoard running until you are ready.
2630 <a name="CMail-multi"></a>
2632 Next: <a rel="next" accesskey="n" href="#CMail-completion">CMail completion</a>,
2633 Previous: <a rel="previous" accesskey="p" href="#CMail-answer">CMail answer</a>,
2634 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
2638 <h3 class="section">10.4 Multi-Game Messages</h3>
2640 <p>It is possible to have a <samp><span class="file">cmail</span></samp> message carry more than one game.
2641 This feature was implemented to handle IECG (International Email Chess
2642 Group) matches, where a match consists of one game as white and one as black,
2643 with moves transmitted simultaneously. In case there are more general uses,
2644 <samp><span class="file">cmail</span></samp> itself places no limit on the number of black/white games
2645 contained in a message; however, XBoard does.
2648 <a name="CMail-completion"></a>
2650 Next: <a rel="next" accesskey="n" href="#CMail-trouble">CMail trouble</a>,
2651 Previous: <a rel="previous" accesskey="p" href="#CMail-multi">CMail multi</a>,
2652 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
2656 <h3 class="section">10.5 Completing a Game</h3>
2658 <p>Because XBoard can detect checkmate and stalemate, <samp><span class="file">cmail</span></samp>
2659 handles game termination sensibly. As well as resignation, the
2660 ‘<samp><span class="samp">Action</span></samp>’ menu allows draws to be offered and accepted for
2661 <samp><span class="file">cmail</span></samp> games.
2663 <p>For multi-game messages, only unfinished and just-finished games will be
2664 included in email messages. When all the games are finished, they are
2665 archived in the user's archive directory, and similarly in the opponent's
2666 when he or she pipes the final message through <samp><span class="file">cmail</span></samp>. The archive
2667 file name includes the date the game was started.
2670 <a name="CMail-trouble"></a>
2672 Previous: <a rel="previous" accesskey="p" href="#CMail-completion">CMail completion</a>,
2673 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
2677 <h3 class="section">10.6 Known CMail Problems</h3>
2679 <p>It's possible that a strange conjunction of conditions may occasionally
2680 mean that <samp><span class="file">cmail</span></samp> has trouble reactivating an existing
2681 XBoard. If this should happen, simply trying it again should work.
2682 If not, remove the file that stores the XBoard's PID
2683 (<samp><span class="file">game.pid</span></samp>) or use the ‘<samp><span class="samp">-xreuse</span></samp>’ option to force
2684 <samp><span class="file">cmail</span></samp> to start a new XBoard.
2686 <p>Versions of <samp><span class="file">cmail</span></samp> after 2.16 no longer understand the old file format
2687 that XBoard used to use and so cannot be used to correspond with
2688 anyone using an older version.
2690 <p>Versions of <samp><span class="file">cmail</span></samp> older than 2.11 do not handle multi-game messages,
2691 so multi-game correspondence is not possible with opponents using an older
2695 <a name="Other-programs"></a>
2697 Next: <a rel="next" accesskey="n" href="#Copyright">Copyright</a>,
2698 Previous: <a rel="previous" accesskey="p" href="#CMail">CMail</a>,
2699 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2703 <h2 class="chapter">11 Other programs you can use with XBoard</h2>
2705 <p><a name="index-Other-programs-445"></a>
2706 Here are some other programs you can use with XBoard
2709 <li><a accesskey="1" href="#GNU-Chess">GNU Chess</a>: The GNU Chess engine.
2710 <li><a accesskey="2" href="#Fairy_002dMax">Fairy-Max</a>: The Fairy-Max chess engine.
2711 <li><a accesskey="3" href="#HoiChess">HoiChess</a>: The HoiChess chess engine.
2712 <li><a accesskey="4" href="#Crafty">Crafty</a>: The Crafty chess engine.
2713 <li><a accesskey="5" href="#zic2xpm">zic2xpm</a>: The program used to import chess sets from ZIICS.
2717 <a name="GNU-Chess"></a>
2719 Next: <a rel="next" accesskey="n" href="#Fairy_002dMax">Fairy-Max</a>,
2720 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
2724 <h3 class="section">11.1 GNU Chess</h3>
2726 <p>The GNU Chess engine is available from:
2728 <p>ftp://ftp.gnu.org/gnu/gnuchess/
2730 <p>You can use XBoard to play a game against GNU Chess, or to
2731 interface GNU Chess to an ICS.
2734 <a name="Fairy-Max"></a>
2735 <a name="Fairy_002dMax"></a>
2737 Next: <a rel="next" accesskey="n" href="#HoiChess">HoiChess</a>,
2738 Previous: <a rel="previous" accesskey="p" href="#GNU-Chess">GNU Chess</a>,
2739 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
2743 <h3 class="section">11.2 Fairy-Max</h3>
2745 <p>Fairy-Max is a derivative from the once World's smallest Chess program micro-Max,
2746 which measures only about 100 lines of source code.
2747 The main difference with micro-Max is that Fairy-Max loads its move-generator
2748 tables from a file, so that the rules for piece movement can be easily configured
2749 to implement unorthodox pieces.
2750 Fairy-Max can therefore play a large number of variants, normal Chess being one of those.
2751 In addition it plays Knightmate, Capablanca and Gothic Chess, Shatranj, Courier Chess,
2752 Cylinder chess, Berolina Chess, while the user can easily define new variants.
2753 It can be obtained from:
2755 <p>http://home.hccnet.nl/h.g.muller/dwnldpage.html
2758 <a name="HoiChess"></a>
2760 Next: <a rel="next" accesskey="n" href="#Crafty">Crafty</a>,
2761 Previous: <a rel="previous" accesskey="p" href="#Fairy_002dMax">Fairy-Max</a>,
2762 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
2766 <h3 class="section">11.3 HoiChess</h3>
2768 <p>HoiChess is a not-so-very-strong Chess engine, which comes with a derivative HoiXiangqi,
2769 able to play Chinese Chess. It can be obtained from the standard Linux repositories
2772 <p>sudo apt-get install hoichess
2775 <a name="Crafty"></a>
2777 Next: <a rel="next" accesskey="n" href="#zic2xpm">zic2xpm</a>,
2778 Previous: <a rel="previous" accesskey="p" href="#HoiChess">HoiChess</a>,
2779 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
2783 <h3 class="section">11.4 Crafty</h3>
2785 <p>Crafty is a chess engine written by Bob Hyatt.
2786 You can use XBoard to play a game against Crafty, hook Crafty up
2787 to an ICS, or use Crafty to interactively analyze games and positions
2790 <p>Crafty is a strong, rapidly evolving chess program. This rapid
2791 pace of development is good, because it means Crafty is always
2792 getting better. This can sometimes cause problems with
2793 backwards compatibility, but usually the latest version of Crafty
2794 will work well with the latest version of XBoard.
2795 Crafty can be obtained from its author's FTP site:
2796 ftp://ftp.cis.uab.edu/hyatt/.
2798 <p>To use Crafty with XBoard, give the -fcp and -fd options as follows, where
2799 <crafty's directory> is the directory in which you installed Crafty
2800 and placed its book and other support files.
2803 <a name="zic2xpm"></a>
2805 Previous: <a rel="previous" accesskey="p" href="#Crafty">Crafty</a>,
2806 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
2810 <h3 class="section">11.5 zic2xpm</h3>
2812 <p>The “zic2xpm” program is used to import chess sets from the ZIICS(*)
2813 program into XBoard. “zic2xpm” is part of the XBoard distribution.
2814 ZIICS is available from:
2816 <p>ftp://ftp.freechess.org/pub/chess/DOS/ziics131.exe
2818 <p>To import ZIICS pieces, do this:
2820 <dt>1. Unzip ziics131.exe into a directory:<dd>
2821 <pre class="example"> unzip -L ziics131.exe -d ~/ziics
2823 <br><dt>2. Use zic2xpm to convert a set of pieces to XBoard format.<dd>
2824 For example, let's say you want to use the
2825 FRITZ4 set. These files are named “fritz4.*” in the ZIICS distribution.
2827 <pre class="example"> mkdir ~/fritz4
2829 zic2xpm ~/ziics/fritz4.*
2831 <br><dt>3. Give XBoard the “-pixmap” option when starting up, e.g.:<dd>
2832 <pre class="example"> xboard -pixmap ~/fritz4
2834 <p>Alternatively, you can add this line to your <samp><span class="file">.Xresources</span></samp> file:
2836 <pre class="example"> xboard*pixmapDirectory: ~/fritz4
2840 <p>(*) ZIICS is a separate copyrighted work of Andy McFarland.
2841 The “ZIICS pieces” are copyrighted works of their respective
2842 creators. Files produced by “zic2xpm” are for PERSONAL USE ONLY
2843 and may NOT be redistributed without explicit permission from
2844 the original creator(s) of the pieces.
2847 <a name="Copyright"></a>
2849 Next: <a rel="next" accesskey="n" href="#Copying">Copying</a>,
2850 Previous: <a rel="previous" accesskey="p" href="#Other-programs">Other programs</a>,
2851 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2855 <h2 class="unnumbered">Copyright</h2>
2857 <p>Copyright © 1991 Digital Equipment Corporation, Maynard, Massachusetts.
2859 <p>All Rights Reserved.
2861 <p>Permission to use, copy, modify, and distribute this software and its
2862 documentation for any purpose and without fee is hereby granted,
2863 provided that the above copyright notice appear in all copies and that
2864 both that copyright notice and this permission notice appear in
2865 supporting documentation, and that the name of Digital not be
2866 used in advertising or publicity pertaining to distribution of the
2867 software without specific, written prior permission.
2869 <p>Digital disclaims all warranties with regard to this software, including
2870 all implied warranties of merchantability and fitness. In no event shall
2871 Digital be liable for any special, indirect or consequential damages or
2872 any damages whatsoever resulting from loss of use, data or profits,
2873 whether in an action of contract, negligence or other tortious action,
2874 arising out of or in connection with the use or performance of this
2877 <p>Enhancements copyright © 1992-2003, 2004, 2005, 2006, 2007,
2878 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
2880 <pre class="format">Published by the Free Software Foundation
2881 59 Temple Place - Suite 330
2882 Boston, MA 02111-1307 USA
2884 <p>Permission is granted to make and distribute verbatim copies of
2885 this manual provided the copyright notice and this permission notice
2886 are preserved on all copies.
2888 <p>Permission is granted to copy and distribute modified versions of this
2889 manual under the conditions for verbatim copying, provided also that the
2890 section entitled “GNU General Public License,”
2891 is included exactly as in the original, and provided that the entire
2892 resulting derived work is distributed under the terms of a permission
2893 notice identical to this one.
2895 <p>Permission is granted to copy and distribute translations of this manual
2896 into another language, under the above conditions for modified versions,
2897 except that the section entitled “GNU General Public License,”
2898 and this permission notice, may be included in translations approved by
2899 the Free Software Foundation instead of in the original English.
2902 <a name="Copying"></a>
2904 Next: <a rel="next" accesskey="n" href="#Index">Index</a>,
2905 Previous: <a rel="previous" accesskey="p" href="#Copyright">Copyright</a>,
2906 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2910 <h2 class="unnumbered">GNU GENERAL PUBLIC LICENSE</h2>
2912 <!-- The GNU General Public License. -->
2913 <div align="center">Version 3, 29 June 2007</div>
2915 <!-- This file is intended to be included within another document, -->
2916 <!-- hence no sectioning command or @node. -->
2917 <pre class="display"> Copyright © 2007 Free Software Foundation, Inc. <a href="http://fsf.org/">http://fsf.org/</a>
2919 Everyone is permitted to copy and distribute verbatim copies of this
2920 license document, but changing it is not allowed.
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2925 software and other kinds of works.
2927 <p>The licenses for most software and other practical works are designed
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3305 names, trademarks, or service marks; or
3307 <li>Requiring indemnification of licensors and authors of that material by
3308 anyone who conveys the material (or modified versions of it) with
3309 contractual assumptions of liability to the recipient, for any
3310 liability that these contractual assumptions directly impose on those
3311 licensors and authors.
3314 <p>All other non-permissive additional terms are considered “further
3315 restrictions” within the meaning of section 10. If the Program as you
3316 received it, or any part of it, contains a notice stating that it is
3317 governed by this License along with a term that is a further
3318 restriction, you may remove that term. If a license document contains
3319 a further restriction but permits relicensing or conveying under this
3320 License, you may add to a covered work material governed by the terms
3321 of that license document, provided that the further restriction does
3322 not survive such relicensing or conveying.
3324 <p>If you add terms to a covered work in accord with this section, you
3325 must place, in the relevant source files, a statement of the
3326 additional terms that apply to those files, or a notice indicating
3327 where to find the applicable terms.
3329 <p>Additional terms, permissive or non-permissive, may be stated in the
3330 form of a separately written license, or stated as exceptions; the
3331 above requirements apply either way.
3335 <p>You may not propagate or modify a covered work except as expressly
3336 provided under this License. Any attempt otherwise to propagate or
3337 modify it is void, and will automatically terminate your rights under
3338 this License (including any patent licenses granted under the third
3339 paragraph of section 11).
3341 <p>However, if you cease all violation of this License, then your license
3342 from a particular copyright holder is reinstated (a) provisionally,
3343 unless and until the copyright holder explicitly and finally
3344 terminates your license, and (b) permanently, if the copyright holder
3345 fails to notify you of the violation by some reasonable means prior to
3346 60 days after the cessation.
3348 <p>Moreover, your license from a particular copyright holder is
3349 reinstated permanently if the copyright holder notifies you of the
3350 violation by some reasonable means, this is the first time you have
3351 received notice of violation of this License (for any work) from that
3352 copyright holder, and you cure the violation prior to 30 days after
3353 your receipt of the notice.
3355 <p>Termination of your rights under this section does not terminate the
3356 licenses of parties who have received copies or rights from you under
3357 this License. If your rights have been terminated and not permanently
3358 reinstated, you do not qualify to receive new licenses for the same
3359 material under section 10.
3361 <li>Acceptance Not Required for Having Copies.
3363 <p>You are not required to accept this License in order to receive or run
3364 a copy of the Program. Ancillary propagation of a covered work
3365 occurring solely as a consequence of using peer-to-peer transmission
3366 to receive a copy likewise does not require acceptance. However,
3367 nothing other than this License grants you permission to propagate or
3368 modify any covered work. These actions infringe copyright if you do
3369 not accept this License. Therefore, by modifying or propagating a
3370 covered work, you indicate your acceptance of this License to do so.
3372 <li>Automatic Licensing of Downstream Recipients.
3374 <p>Each time you convey a covered work, the recipient automatically
3375 receives a license from the original licensors, to run, modify and
3376 propagate that work, subject to this License. You are not responsible
3377 for enforcing compliance by third parties with this License.
3379 <p>An “entity transaction” is a transaction transferring control of an
3380 organization, or substantially all assets of one, or subdividing an
3381 organization, or merging organizations. If propagation of a covered
3382 work results from an entity transaction, each party to that
3383 transaction who receives a copy of the work also receives whatever
3384 licenses to the work the party's predecessor in interest had or could
3385 give under the previous paragraph, plus a right to possession of the
3386 Corresponding Source of the work from the predecessor in interest, if
3387 the predecessor has it or can get it with reasonable efforts.
3389 <p>You may not impose any further restrictions on the exercise of the
3390 rights granted or affirmed under this License. For example, you may
3391 not impose a license fee, royalty, or other charge for exercise of
3392 rights granted under this License, and you may not initiate litigation
3393 (including a cross-claim or counterclaim in a lawsuit) alleging that
3394 any patent claim is infringed by making, using, selling, offering for
3395 sale, or importing the Program or any portion of it.
3399 <p>A “contributor” is a copyright holder who authorizes use under this
3400 License of the Program or a work on which the Program is based. The
3401 work thus licensed is called the contributor's “contributor version”.
3403 <p>A contributor's “essential patent claims” are all patent claims owned
3404 or controlled by the contributor, whether already acquired or
3405 hereafter acquired, that would be infringed by some manner, permitted
3406 by this License, of making, using, or selling its contributor version,
3407 but do not include claims that would be infringed only as a
3408 consequence of further modification of the contributor version. For
3409 purposes of this definition, “control” includes the right to grant
3410 patent sublicenses in a manner consistent with the requirements of
3413 <p>Each contributor grants you a non-exclusive, worldwide, royalty-free
3414 patent license under the contributor's essential patent claims, to
3415 make, use, sell, offer for sale, import and otherwise run, modify and
3416 propagate the contents of its contributor version.
3418 <p>In the following three paragraphs, a “patent license” is any express
3419 agreement or commitment, however denominated, not to enforce a patent
3420 (such as an express permission to practice a patent or covenant not to
3421 sue for patent infringement). To “grant” such a patent license to a
3422 party means to make such an agreement or commitment not to enforce a
3423 patent against the party.
3425 <p>If you convey a covered work, knowingly relying on a patent license,
3426 and the Corresponding Source of the work is not available for anyone
3427 to copy, free of charge and under the terms of this License, through a
3428 publicly available network server or other readily accessible means,
3429 then you must either (1) cause the Corresponding Source to be so
3430 available, or (2) arrange to deprive yourself of the benefit of the
3431 patent license for this particular work, or (3) arrange, in a manner
3432 consistent with the requirements of this License, to extend the patent
3433 license to downstream recipients. “Knowingly relying” means you have
3434 actual knowledge that, but for the patent license, your conveying the
3435 covered work in a country, or your recipient's use of the covered work
3436 in a country, would infringe one or more identifiable patents in that
3437 country that you have reason to believe are valid.
3439 <p>If, pursuant to or in connection with a single transaction or
3440 arrangement, you convey, or propagate by procuring conveyance of, a
3441 covered work, and grant a patent license to some of the parties
3442 receiving the covered work authorizing them to use, propagate, modify
3443 or convey a specific copy of the covered work, then the patent license
3444 you grant is automatically extended to all recipients of the covered
3445 work and works based on it.
3447 <p>A patent license is “discriminatory” if it does not include within the
3448 scope of its coverage, prohibits the exercise of, or is conditioned on
3449 the non-exercise of one or more of the rights that are specifically
3450 granted under this License. You may not convey a covered work if you
3451 are a party to an arrangement with a third party that is in the
3452 business of distributing software, under which you make payment to the
3453 third party based on the extent of your activity of conveying the
3454 work, and under which the third party grants, to any of the parties
3455 who would receive the covered work from you, a discriminatory patent
3456 license (a) in connection with copies of the covered work conveyed by
3457 you (or copies made from those copies), or (b) primarily for and in
3458 connection with specific products or compilations that contain the
3459 covered work, unless you entered into that arrangement, or that patent
3460 license was granted, prior to 28 March 2007.
3462 <p>Nothing in this License shall be construed as excluding or limiting
3463 any implied license or other defenses to infringement that may
3464 otherwise be available to you under applicable patent law.
3466 <li>No Surrender of Others' Freedom.
3468 <p>If conditions are imposed on you (whether by court order, agreement or
3469 otherwise) that contradict the conditions of this License, they do not
3470 excuse you from the conditions of this License. If you cannot convey
3471 a covered work so as to satisfy simultaneously your obligations under
3472 this License and any other pertinent obligations, then as a
3473 consequence you may not convey it at all. For example, if you agree
3474 to terms that obligate you to collect a royalty for further conveying
3475 from those to whom you convey the Program, the only way you could
3476 satisfy both those terms and this License would be to refrain entirely
3477 from conveying the Program.
3479 <li>Use with the GNU Affero General Public License.
3481 <p>Notwithstanding any other provision of this License, you have
3482 permission to link or combine any covered work with a work licensed
3483 under version 3 of the GNU Affero General Public License into a single
3484 combined work, and to convey the resulting work. The terms of this
3485 License will continue to apply to the part which is the covered work,
3486 but the special requirements of the GNU Affero General Public License,
3487 section 13, concerning interaction through a network will apply to the
3488 combination as such.
3490 <li>Revised Versions of this License.
3492 <p>The Free Software Foundation may publish revised and/or new versions
3493 of the GNU General Public License from time to time. Such new
3494 versions will be similar in spirit to the present version, but may
3495 differ in detail to address new problems or concerns.
3497 <p>Each version is given a distinguishing version number. If the Program
3498 specifies that a certain numbered version of the GNU General Public
3499 License “or any later version” applies to it, you have the option of
3500 following the terms and conditions either of that numbered version or
3501 of any later version published by the Free Software Foundation. If
3502 the Program does not specify a version number of the GNU General
3503 Public License, you may choose any version ever published by the Free
3504 Software Foundation.
3506 <p>If the Program specifies that a proxy can decide which future versions
3507 of the GNU General Public License can be used, that proxy's public
3508 statement of acceptance of a version permanently authorizes you to
3509 choose that version for the Program.
3511 <p>Later license versions may give you additional or different
3512 permissions. However, no additional obligations are imposed on any
3513 author or copyright holder as a result of your choosing to follow a
3516 <li>Disclaimer of Warranty.
3518 <p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
3519 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
3520 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT
3521 WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
3522 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
3523 A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
3524 PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
3525 DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
3528 <li>Limitation of Liability.
3530 <p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
3531 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
3532 CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
3533 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
3534 ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
3535 NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
3536 LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
3537 TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
3538 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
3540 <li>Interpretation of Sections 15 and 16.
3542 <p>If the disclaimer of warranty and limitation of liability provided
3543 above cannot be given local legal effect according to their terms,
3544 reviewing courts shall apply local law that most closely approximates
3545 an absolute waiver of all civil liability in connection with the
3546 Program, unless a warranty or assumption of liability accompanies a
3547 copy of the Program in return for a fee.
3551 <h3 class="heading">END OF TERMS AND CONDITIONS</h3>
3553 <h3 class="heading">How to Apply These Terms to Your New Programs</h3>
3555 <p>If you develop a new program, and you want it to be of the greatest
3556 possible use to the public, the best way to achieve this is to make it
3557 free software which everyone can redistribute and change under these
3560 <p>To do so, attach the following notices to the program. It is safest
3561 to attach them to the start of each source file to most effectively
3562 state the exclusion of warranty; and each file should have at least
3563 the “copyright” line and a pointer to where the full notice is found.
3565 <pre class="smallexample"> <var>one line to give the program's name and a brief idea of what it does.</var>
3566 Copyright (C) <var>year</var> <var>name of author</var>
3568 This program is free software: you can redistribute it and/or modify
3569 it under the terms of the GNU General Public License as published by
3570 the Free Software Foundation, either version 3 of the License, or (at
3571 your option) any later version.
3573 This program is distributed in the hope that it will be useful, but
3574 WITHOUT ANY WARRANTY; without even the implied warranty of
3575 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3576 General Public License for more details.
3578 You should have received a copy of the GNU General Public License
3579 along with this program. If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
3581 <p>Also add information on how to contact you by electronic and paper mail.
3583 <p>If the program does terminal interaction, make it output a short
3584 notice like this when it starts in an interactive mode:
3586 <pre class="smallexample"> <var>program</var> Copyright (C) <var>year</var> <var>name of author</var>
3587 This program comes with ABSOLUTELY NO WARRANTY; for details type ‘<samp><span class="samp">show w</span></samp>’.
3588 This is free software, and you are welcome to redistribute it
3589 under certain conditions; type ‘<samp><span class="samp">show c</span></samp>’ for details.
3591 <p>The hypothetical commands ‘<samp><span class="samp">show w</span></samp>’ and ‘<samp><span class="samp">show c</span></samp>’ should show
3592 the appropriate parts of the General Public License. Of course, your
3593 program's commands might be different; for a GUI interface, you would
3594 use an “about box”.
3596 <p>You should also get your employer (if you work as a programmer) or school,
3597 if any, to sign a “copyright disclaimer” for the program, if necessary.
3598 For more information on this, and how to apply and follow the GNU GPL, see
3599 <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
3601 <p>The GNU General Public License does not permit incorporating your
3602 program into proprietary programs. If your program is a subroutine
3603 library, you may consider it more useful to permit linking proprietary
3604 applications with the library. If this is what you want to do, use
3605 the GNU Lesser General Public License instead of this License. But
3606 first, please read <a href="http://www.gnu.org/philosophy/why-not-lgpl.html">http://www.gnu.org/philosophy/why-not-lgpl.html</a>.
3610 <a name="Index"></a>
3612 Previous: <a rel="previous" accesskey="p" href="#Copying">Copying</a>,
3613 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3617 <h2 class="unnumbered">Index</h2>
3619 <ul class="index-cp" compact>
3620 <li><a href="#index-g_t_002danimateSpeed_002c-option-381">-animateSpeed, option</a>: <a href="#User-interface-options">User interface options</a></li>
3621 <li><a href="#index-g_t_002dautoDisplayComment_002c-option-382">-autoDisplayComment, option</a>: <a href="#User-interface-options">User interface options</a></li>
3622 <li><a href="#index-g_t_002dautoDisplayTags_002c-option-383">-autoDisplayTags, option</a>: <a href="#User-interface-options">User interface options</a></li>
3623 <li><a href="#index-g_t_002dpasteSelection_002c-option-384">-pasteSelection, option</a>: <a href="#User-interface-options">User interface options</a></li>
3624 <li><a href="#index-g_t_002eicsrc-228">.icsrc</a>: <a href="#ICS-options">ICS options</a></li>
3625 <li><a href="#index-g_t_003c_002c-Button-32"><, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3626 <li><a href="#index-g_t_003c_003c_002c-Button-36"><<, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3627 <li><a href="#index-g_t_003e_002c-Button-34">>, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3628 <li><a href="#index-g_t_003e_003e_002c-Button-38">>>, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3629 <li><a href="#index-abort_002c-ICS-command-426">abort, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3630 <li><a href="#index-Abort_002c-Menu-Item-66">Abort, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3631 <li><a href="#index-About-XBoard_002c-Menu-Item-122">About XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
3632 <li><a href="#index-accept_002c-ICS-command-422">accept, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3633 <li><a href="#index-Accept_002c-Menu-Item-61">Accept, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3634 <li><a href="#index-Action_002c-Menu-60">Action, Menu</a>: <a href="#Action-Menu">Action Menu</a></li>
3635 <li><a href="#index-adjourn_002c-ICS-command-425">adjourn, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3636 <li><a href="#index-Adjourn_002c-Menu-Item-65">Adjourn, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3637 <li><a href="#index-Adjudicate-Draw_002c-Menu-Item-73">Adjudicate Draw, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3638 <li><a href="#index-Adjudicate-to-Black_002c-Menu-Item-72">Adjudicate to Black, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3639 <li><a href="#index-Adjudicate-to-White_002c-Menu-Item-71">Adjudicate to White, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3640 <li><a href="#index-adjudicateDrawMoves_002c-option-387">adjudicateDrawMoves, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
3641 <li><a href="#index-adjudicateLossThreshold_002c-option-386">adjudicateLossThreshold, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
3642 <li><a href="#index-Adjudications_002c-Menu-Item-87">Adjudications, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3643 <li><a href="#index-alarm_002c-option-247">alarm, option</a>: <a href="#ICS-options">ICS options</a></li>
3644 <li><a href="#index-Always-Queen_002c-Menu-Item-89">Always Queen, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3645 <li><a href="#index-alwaysPromoteToQueen_002c-option-328">alwaysPromoteToQueen, option</a>: <a href="#User-interface-options">User interface options</a></li>
3646 <li><a href="#index-Analysis-Mode_002c-Menu-Item-54">Analysis Mode, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3647 <li><a href="#index-Analyze-File_002c-Menu-Item-55">Analyze File, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3648 <li><a href="#index-Animate-Dragging_002c-Menu-Item-90">Animate Dragging, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3649 <li><a href="#index-Animate-Moving_002c-Menu-Item-91">Animate Moving, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3650 <li><a href="#index-animate_002c-option-379">animate, option</a>: <a href="#User-interface-options">User interface options</a></li>
3651 <li><a href="#index-animateDragging_002c-option-378">animateDragging, option</a>: <a href="#User-interface-options">User interface options</a></li>
3652 <li><a href="#index-animateMoving_002c-option-380">animateMoving, option</a>: <a href="#User-interface-options">User interface options</a></li>
3653 <li><a href="#index-Annotate_002c-Menu-Item-29">Annotate, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3654 <li><a href="#index-at-sign_002c-option-313">at sign, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3655 <li><a href="#index-Authors-442">Authors</a>: <a href="#Contributors">Contributors</a></li>
3656 <li><a href="#index-Auto-Comment_002c-Menu-Item-92">Auto Comment, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3657 <li><a href="#index-Auto-Flag_002c-Menu-Item-93">Auto Flag, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3658 <li><a href="#index-Auto-Flip-View_002c-Menu-Item-94">Auto Flip View, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3659 <li><a href="#index-Auto-Observe_002c-Menu-Item-95">Auto Observe, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3660 <li><a href="#index-Auto-Raise-Board_002c-Menu-Item-96">Auto Raise Board, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3661 <li><a href="#index-Auto-Save_002c-Menu-Item-97">Auto Save, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3662 <li><a href="#index-autobs_002c-option-236">autobs, option</a>: <a href="#ICS-options">ICS options</a></li>
3663 <li><a href="#index-autoCallFlag_002c-option-235">autoCallFlag, option</a>: <a href="#ICS-options">ICS options</a></li>
3664 <li><a href="#index-autocomm_002c-option-232">autocomm, option</a>: <a href="#ICS-options">ICS options</a></li>
3665 <li><a href="#index-autoComment_002c-option-233">autoComment, option</a>: <a href="#ICS-options">ICS options</a></li>
3666 <li><a href="#index-autoflag_002c-option-234">autoflag, option</a>: <a href="#ICS-options">ICS options</a></li>
3667 <li><a href="#index-autoflip_002c-option-338">autoflip, option</a>: <a href="#User-interface-options">User interface options</a></li>
3668 <li><a href="#index-autoFlipView_002c-option-339">autoFlipView, option</a>: <a href="#User-interface-options">User interface options</a></li>
3669 <li><a href="#index-autoKibitz_002c-option-238">autoKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
3670 <li><a href="#index-autoObserve_002c-option-237">autoObserve, option</a>: <a href="#ICS-options">ICS options</a></li>
3671 <li><a href="#index-autoraise_002c-option-336">autoraise, option</a>: <a href="#User-interface-options">User interface options</a></li>
3672 <li><a href="#index-autoRaiseBoard_002c-option-337">autoRaiseBoard, option</a>: <a href="#User-interface-options">User interface options</a></li>
3673 <li><a href="#index-autoRefresh_002c-option-241">autoRefresh, option</a>: <a href="#ICS-options">ICS options</a></li>
3674 <li><a href="#index-autosave_002c-option-296">autosave, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3675 <li><a href="#index-autoSaveGames_002c-option-297">autoSaveGames, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3676 <li><a href="#index-Back-to-Start_002c-Menu-Item-35">Back to Start, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3677 <li><a href="#index-backgroundObserve_002c-option-242">backgroundObserve, option</a>: <a href="#ICS-options">ICS options</a></li>
3678 <li><a href="#index-Backward_002c-Menu-Item-31">Backward, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3679 <li><a href="#index-bell_002c-option-321">bell, option</a>: <a href="#User-interface-options">User interface options</a></li>
3680 <li><a href="#index-bitmapDirectory_002c-option-367">bitmapDirectory, option</a>: <a href="#User-interface-options">User interface options</a></li>
3681 <li><a href="#index-blackPieceColor_002c-option-372">blackPieceColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
3682 <li><a href="#index-blind_002c-option-357">blind, option</a>: <a href="#User-interface-options">User interface options</a></li>
3683 <li><a href="#index-Blindfold_002c-Menu-Item-98">Blindfold, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3684 <li><a href="#index-blindfold_002c-option-358">blindfold, option</a>: <a href="#User-interface-options">User interface options</a></li>
3685 <li><a href="#index-bm_002c-option-366">bm, option</a>: <a href="#User-interface-options">User interface options</a></li>
3686 <li><a href="#index-board-size-333">board size</a>: <a href="#User-interface-options">User interface options</a></li>
3687 <li><a href="#index-boardHeight_002c-option-399">boardHeight, option</a>: <a href="#Other-options">Other options</a></li>
3688 <li><a href="#index-boardSize_002c-option-332">boardSize, option</a>: <a href="#User-interface-options">User interface options</a></li>
3689 <li><a href="#index-boardWidth_002c-option-400">boardWidth, option</a>: <a href="#Other-options">Other options</a></li>
3690 <li><a href="#index-Book_002c-Menu-Item-80">Book, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3691 <li><a href="#index-Bug-reports-438">Bug reports</a>: <a href="#Problems">Problems</a></li>
3692 <li><a href="#index-Bugs-437">Bugs</a>: <a href="#Problems">Problems</a></li>
3693 <li><a href="#index-Bugs-436">Bugs</a>: <a href="#Limitations">Limitations</a></li>
3694 <li><a href="#index-buttons_002c-option-344">buttons, option</a>: <a href="#User-interface-options">User interface options</a></li>
3695 <li><a href="#index-Call-Flag_002c-Menu-Item-63">Call Flag, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3696 <li><a href="#index-checkMates_002c-option-388">checkMates, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
3697 <li><a href="#index-Chess-engine-options-132">Chess engine options</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3698 <li><a href="#index-CHESSDIR-434">CHESSDIR</a>: <a href="#Environment">Environment</a></li>
3699 <li><a href="#index-clock_002c-option-139">clock, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3700 <li><a href="#index-clockFont_002c-option-359">clockFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
3701 <li><a href="#index-clockMode_002c-option-140">clockMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3702 <li><a href="#index-cmail-444">cmail</a>: <a href="#CMail">CMail</a></li>
3703 <li><a href="#index-colorChallenge_002c-option-264">colorChallenge, option</a>: <a href="#ICS-options">ICS options</a></li>
3704 <li><a href="#index-colorChannel_002c-option-261">colorChannel, option</a>: <a href="#ICS-options">ICS options</a></li>
3705 <li><a href="#index-colorChannel1_002c-option-260">colorChannel1, option</a>: <a href="#ICS-options">ICS options</a></li>
3706 <li><a href="#index-colorize_002c-option-256">colorize, option</a>: <a href="#ICS-options">ICS options</a></li>
3707 <li><a href="#index-colorKibitz_002c-option-262">colorKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
3708 <li><a href="#index-colorNormal_002c-option-267">colorNormal, option</a>: <a href="#ICS-options">ICS options</a></li>
3709 <li><a href="#index-colorRequest_002c-option-265">colorRequest, option</a>: <a href="#ICS-options">ICS options</a></li>
3710 <li><a href="#index-Colors-370">Colors</a>: <a href="#User-interface-options">User interface options</a></li>
3711 <li><a href="#index-Colors-255">Colors</a>: <a href="#ICS-options">ICS options</a></li>
3712 <li><a href="#index-colorSeek_002c-option-266">colorSeek, option</a>: <a href="#ICS-options">ICS options</a></li>
3713 <li><a href="#index-colorShout_002c-option-258">colorShout, option</a>: <a href="#ICS-options">ICS options</a></li>
3714 <li><a href="#index-colorSShout_002c-option-259">colorSShout, option</a>: <a href="#ICS-options">ICS options</a></li>
3715 <li><a href="#index-colorTell_002c-option-263">colorTell, option</a>: <a href="#ICS-options">ICS options</a></li>
3716 <li><a href="#index-Comments_002c-Menu-Item-47">Comments, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
3717 <li><a href="#index-Common-Engine_002c-Menu-Item-86">Common Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3718 <li><a href="#index-Contributors-443">Contributors</a>: <a href="#Contributors">Contributors</a></li>
3719 <li><a href="#index-coordFont_002c-option-361">coordFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
3720 <li><a href="#index-coords_002c-option-334">coords, option</a>: <a href="#User-interface-options">User interface options</a></li>
3721 <li><a href="#index-Copy-Game_002c-Menu-Item-20">Copy Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3722 <li><a href="#index-Copy-Position_002c-Menu-Item-21">Copy Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3723 <li><a href="#index-darkSquareColor_002c-option-374">darkSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
3724 <li><a href="#index-debug_002c-option-404">debug, option</a>: <a href="#Other-options">Other options</a></li>
3725 <li><a href="#index-debugFile_002c-option-406">debugFile, option</a>: <a href="#Other-options">Other options</a></li>
3726 <li><a href="#index-debugMode_002c-option-405">debugMode, option</a>: <a href="#Other-options">Other options</a></li>
3727 <li><a href="#index-decline_002c-ICS-command-423">decline, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3728 <li><a href="#index-Decline_002c-Menu-Item-62">Decline, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3729 <li><a href="#index-defaultCacheSizeEGTB_002c-option-207">defaultCacheSizeEGTB, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3730 <li><a href="#index-defaultFrcPosition_002c-option-402">defaultFrcPosition, option</a>: <a href="#Other-options">Other options</a></li>
3731 <li><a href="#index-defaultHashSize_002c-option-206">defaultHashSize, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3732 <li><a href="#index-defaultPathEGTB_002c-option-208">defaultPathEGTB, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3733 <li><a href="#index-delayAfterQuit_002c-option-415">delayAfterQuit, option</a>: <a href="#Other-options">Other options</a></li>
3734 <li><a href="#index-delayBeforeQuit_002c-option-414">delayBeforeQuit, option</a>: <a href="#Other-options">Other options</a></li>
3735 <li><a href="#index-display_002c-option-316">display, option</a>: <a href="#User-interface-options">User interface options</a></li>
3736 <li><a href="#index-drag_002c-option-377">drag, option</a>: <a href="#User-interface-options">User interface options</a></li>
3737 <li><a href="#index-draw_002c-ICS-command-424">draw, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3738 <li><a href="#index-Draw_002c-Menu-Item-64">Draw, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3739 <li><a href="#index-dropMenu_002c-option-284">dropMenu, option</a>: <a href="#ICS-options">ICS options</a></li>
3740 <li><a href="#index-dualBoard_002c-option-243">dualBoard, option</a>: <a href="#ICS-options">ICS options</a></li>
3741 <li><a href="#index-Edit-Comment_002c-Menu-Item-27">Edit Comment, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3742 <li><a href="#index-Edit-Game_002c-Menu-Item-24">Edit Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3743 <li><a href="#index-Edit-Menu-19">Edit Menu</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3744 <li><a href="#index-Edit-Position_002c-Menu-Item-25">Edit Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3745 <li><a href="#index-Edit-Tags_002c-Menu-Item-26">Edit Tags, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3746 <li><a href="#index-egtFormats_002c-option-209">egtFormats, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3747 <li><a href="#index-Engine-_00231-Settings_002c-Menu-Item-77">Engine #1 Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3748 <li><a href="#index-Engine-_00232-Settings_002c-Menu-Item-78">Engine #2 Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3749 <li><a href="#index-Engine-Menu-74">Engine Menu</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3750 <li><a href="#index-Engine-Settings-191">Engine Settings</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3751 <li><a href="#index-Engine-Settings_002c-Menu-Item-76">Engine Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3752 <li><a href="#index-engineDebugOutput_002c-option-408">engineDebugOutput, option</a>: <a href="#Other-options">Other options</a></li>
3753 <li><a href="#index-Environment-variables-433">Environment variables</a>: <a href="#Environment">Environment</a></li>
3754 <li><a href="#index-examine_002c-ICS-command-431">examine, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3755 <li><a href="#index-Exit_002c-Menu-Item-17">Exit, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3756 <li><a href="#index-exit_002c-option-323">exit, option</a>: <a href="#User-interface-options">User interface options</a></li>
3757 <li><a href="#index-fb_002c-option-163">fb, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3758 <li><a href="#index-fcp_002c-option-159">fcp, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3759 <li><a href="#index-fd_002c-option-169">fd, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3760 <li><a href="#index-fh_002c-option-165">fh, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3761 <li><a href="#index-File-Menu-4">File Menu</a>: <a href="#File-Menu">File Menu</a></li>
3762 <li><a href="#index-finger_002c-ICS-command-427">finger, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3763 <li><a href="#index-firstChessProgram_002c-option-160">firstChessProgram, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3764 <li><a href="#index-firstComputerString_002c-option-175">firstComputerString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3765 <li><a href="#index-firstDirectory_002c-option-170">firstDirectory, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3766 <li><a href="#index-firstHasOwnBookUCI_002c-option-202">firstHasOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3767 <li><a href="#index-firstHost_002c-option-166">firstHost, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3768 <li><a href="#index-firstIsUCI_002c-option-195">firstIsUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3769 <li><a href="#index-firstNeedsNoncompliantFEN_002c-option-188">firstNeedsNoncompliantFEN, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3770 <li><a href="#index-firstNPS_002c-option-145">firstNPS, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3771 <li><a href="#index-firstOptions_002c-option-186">firstOptions, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3772 <li><a href="#index-firstPlaysBlack_002c-option-164">firstPlaysBlack, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3773 <li><a href="#index-firstProtocolVersion_002c-option-181">firstProtocolVersion, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3774 <li><a href="#index-firstScoreAbs_002c-option-183">firstScoreAbs, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3775 <li><a href="#index-firstTimeOdds_002c-option-147">firstTimeOdds, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3776 <li><a href="#index-firstXBook_002c-option-204">firstXBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3777 <li><a href="#index-Flash-Moves_002c-Menu-Item-99">Flash Moves, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3778 <li><a href="#index-flash_002c-option-351">flash, option</a>: <a href="#User-interface-options">User interface options</a></li>
3779 <li><a href="#index-flashCount_002c-option-349">flashCount, option</a>: <a href="#User-interface-options">User interface options</a></li>
3780 <li><a href="#index-flashRate_002c-option-350">flashRate, option</a>: <a href="#User-interface-options">User interface options</a></li>
3781 <li><a href="#index-Flip-View_002c-Menu-Item-41">Flip View, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
3782 <li><a href="#index-flip_002c-option-340">flip, option</a>: <a href="#User-interface-options">User interface options</a></li>
3783 <li><a href="#index-flipView_002c-option-341">flipView, option</a>: <a href="#User-interface-options">User interface options</a></li>
3784 <li><a href="#index-fNoOwnBookUCI_002c-option-200">fNoOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3785 <li><a href="#index-Font-364">Font</a>: <a href="#User-interface-options">User interface options</a></li>
3786 <li><a href="#index-Font_002c-clock-360">Font, clock</a>: <a href="#User-interface-options">User interface options</a></li>
3787 <li><a href="#index-Font_002c-coordinates-362">Font, coordinates</a>: <a href="#User-interface-options">User interface options</a></li>
3788 <li><a href="#index-font_002c-option-363">font, option</a>: <a href="#User-interface-options">User interface options</a></li>
3789 <li><a href="#index-fontSizeTolerance_002c-option-365">fontSizeTolerance, option</a>: <a href="#User-interface-options">User interface options</a></li>
3790 <li><a href="#index-Forward-to-End_002c-Menu-Item-37">Forward to End, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3791 <li><a href="#index-Forward_002c-Menu-Item-33">Forward, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3792 <li><a href="#index-fUCI_002c-option-193">fUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3793 <li><a href="#index-Game-List-Tags_002c-Menu-Item-88">Game List Tags, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3794 <li><a href="#index-gameListTags_002c-option-309">gameListTags, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3795 <li><a href="#index-games_002c-ICS-command-421">games, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3796 <li><a href="#index-gateway_002c-option-223">gateway, option</a>: <a href="#ICS-options">ICS options</a></li>
3797 <li><a href="#index-geometry_002c-option-317">geometry, option</a>: <a href="#User-interface-options">User interface options</a></li>
3798 <li><a href="#index-Get-Move-List_002c-Menu-Item-100">Get Move List, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3799 <li><a href="#index-getMoveList_002c-option-246">getMoveList, option</a>: <a href="#ICS-options">ICS options</a></li>
3800 <li><a href="#index-Help-Menu-119">Help Menu</a>: <a href="#Help-Menu">Help Menu</a></li>
3801 <li><a href="#index-help_002c-ICS-command-419">help, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3802 <li><a href="#index-Hide-Thinking_002c-Menu-Item-114">Hide Thinking, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3803 <li><a href="#index-highlight-Arrow_002c-option-355">highlight Arrow, option</a>: <a href="#User-interface-options">User interface options</a></li>
3804 <li><a href="#index-Highlight-Dragging_002c-Menu-Item-101">Highlight Dragging, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3805 <li><a href="#index-Highlight-Last-Move_002c-Menu-Item-102">Highlight Last Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3806 <li><a href="#index-Highlight-with-Arrow_002c-Menu-Item-103">Highlight with Arrow, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3807 <li><a href="#index-highlight_002c-option-353">highlight, option</a>: <a href="#User-interface-options">User interface options</a></li>
3808 <li><a href="#index-highlightLastMove_002c-option-354">highlightLastMove, option</a>: <a href="#User-interface-options">User interface options</a></li>
3809 <li><a href="#index-highlightMoveWithArrow_002c-option-356">highlightMoveWithArrow, option</a>: <a href="#User-interface-options">User interface options</a></li>
3810 <li><a href="#index-highlightSquareColor_002c-option-375">highlightSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
3811 <li><a href="#index-Hint_002c-Menu-Item-79">Hint, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3812 <li><a href="#index-holdingsSize_002c-option-401">holdingsSize, option</a>: <a href="#Other-options">Other options</a></li>
3813 <li><a href="#index-iconic_002c-option-318">iconic, option</a>: <a href="#User-interface-options">User interface options</a></li>
3814 <li><a href="#index-ICS-416">ICS</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3815 <li><a href="#index-ICS-Alarm_002c-Menu-Item-105">ICS Alarm, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3816 <li><a href="#index-ICS-Client_002c-Menu-Item-57">ICS Client, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3817 <li><a href="#index-ICS-Input-Box_002c-Menu-Item-48">ICS Input Box, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
3818 <li><a href="#index-ICS-options-210">ICS options</a>: <a href="#ICS-options">ICS options</a></li>
3819 <li><a href="#index-ICS_002c-addresses-417">ICS, addresses</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3820 <li><a href="#index-ics_002c-option-212">ics, option</a>: <a href="#ICS-options">ICS options</a></li>
3821 <li><a href="#index-icsAlarm_002c-option-248">icsAlarm, option</a>: <a href="#ICS-options">ICS options</a></li>
3822 <li><a href="#index-icsAlarmTime_002c-option-249">icsAlarmTime, option</a>: <a href="#ICS-options">ICS options</a></li>
3823 <li><a href="#index-icscomm_002c-option-225">icscomm, option</a>: <a href="#ICS-options">ICS options</a></li>
3824 <li><a href="#index-icshelper_002c-option-218">icshelper, option</a>: <a href="#ICS-options">ICS options</a></li>
3825 <li><a href="#index-icshost_002c-option-214">icshost, option</a>: <a href="#ICS-options">ICS options</a></li>
3826 <li><a href="#index-icsinput_002c-option-230">icsinput, option</a>: <a href="#ICS-options">ICS options</a></li>
3827 <li><a href="#index-icslogon_002c-option-226">icslogon, option</a>: <a href="#ICS-options">ICS options</a></li>
3828 <li><a href="#index-icsport_002c-option-216">icsport, option</a>: <a href="#ICS-options">ICS options</a></li>
3829 <li><a href="#index-inc_002c-option-137">inc, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3830 <li><a href="#index-Info-XBoard_002c-Menu-Item-120">Info XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
3831 <li><a href="#index-init_002c-option-312">init, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3832 <li><a href="#index-initalMode_002c-option-397">initalMode, option</a>: <a href="#Other-options">Other options</a></li>
3833 <li><a href="#index-initString_002c-option-173">initString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3834 <li><a href="#index-Internet-Chess-Server-418">Internet Chess Server</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3835 <li><a href="#index-internetChessServerCommPort_002c-option-224">internetChessServerCommPort, option</a>: <a href="#ICS-options">ICS options</a></li>
3836 <li><a href="#index-internetChessServerHelper_002c-option-219">internetChessServerHelper, option</a>: <a href="#ICS-options">ICS options</a></li>
3837 <li><a href="#index-internetChessServerHost_002c-option-215">internetChessServerHost, option</a>: <a href="#ICS-options">ICS options</a></li>
3838 <li><a href="#index-internetChessServerInputBox_002c-option-231">internetChessServerInputBox, option</a>: <a href="#ICS-options">ICS options</a></li>
3839 <li><a href="#index-internetChessServerLogonScript_002c-option-227">internetChessServerLogonScript, option</a>: <a href="#ICS-options">ICS options</a></li>
3840 <li><a href="#index-internetChessServerMode_002c-option-213">internetChessServerMode, option</a>: <a href="#ICS-options">ICS options</a></li>
3841 <li><a href="#index-internetChessServerPort_002c-option-217">internetChessServerPort, option</a>: <a href="#ICS-options">ICS options</a></li>
3842 <li><a href="#index-introduction-1">introduction</a>: <a href="#Top">Top</a></li>
3843 <li><a href="#index-Keys-123">Keys</a>: <a href="#Keys">Keys</a></li>
3844 <li><a href="#index-legal_002c-option-329">legal, option</a>: <a href="#User-interface-options">User interface options</a></li>
3845 <li><a href="#index-lgf_002c-option-288">lgf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3846 <li><a href="#index-lgi_002c-option-290">lgi, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3847 <li><a href="#index-lightSquareColor_002c-option-373">lightSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
3848 <li><a href="#index-Limitations-435">Limitations</a>: <a href="#Limitations">Limitations</a></li>
3849 <li><a href="#index-Load-and-Save-options-287">Load and Save options</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3850 <li><a href="#index-Load-Game_002c-Menu-Item-9">Load Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3851 <li><a href="#index-Load-Next-Game_002c-Menu-Item-125">Load Next Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
3852 <li><a href="#index-Load-Next-Position_002c-Menu-Item-11">Load Next Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3853 <li><a href="#index-Load-Position_002c-Menu-Item-10">Load Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3854 <li><a href="#index-Load-Previous-Game_002c-Menu-Item-126">Load Previous Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
3855 <li><a href="#index-Load-Previous-Position_002c-Menu-Item-12">Load Previous Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3856 <li><a href="#index-loadGameFile_002c-option-289">loadGameFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3857 <li><a href="#index-loadGameIndex_002c-option-291">loadGameIndex, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3858 <li><a href="#index-loadPositionFile_002c-option-299">loadPositionFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3859 <li><a href="#index-loadPositionIndex_002c-option-301">loadPositionIndex, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3860 <li><a href="#index-lowTimeWarning_002c-option-250">lowTimeWarning, option</a>: <a href="#ICS-options">ICS options</a></li>
3861 <li><a href="#index-lowTimeWarningColor_002c-option-376">lowTimeWarningColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
3862 <li><a href="#index-lpf_002c-option-298">lpf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3863 <li><a href="#index-lpi_002c-option-300">lpi, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3864 <li><a href="#index-Machine-Black_002c-Menu-Item-52">Machine Black, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3865 <li><a href="#index-Machine-White_002c-Menu-Item-51">Machine White, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3866 <li><a href="#index-Mail-Move_002c-Menu-Item-15">Mail Move, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3867 <li><a href="#index-Major-modes-2">Major modes</a>: <a href="#Major-modes">Major modes</a></li>
3868 <li><a href="#index-Man-XBoard_002c-Menu-Item-121">Man XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
3869 <li><a href="#index-matchGames_002c-option-155">matchGames, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3870 <li><a href="#index-matchMode_002c-option-157">matchMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3871 <li><a href="#index-materialDraws_002c-option-390">materialDraws, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
3872 <li><a href="#index-Menu_002c-Action-59">Menu, Action</a>: <a href="#Action-Menu">Action Menu</a></li>
3873 <li><a href="#index-Menu_002c-Edit-18">Menu, Edit</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3874 <li><a href="#index-Menu_002c-Engine-75">Menu, Engine</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3875 <li><a href="#index-Menu_002c-File-5">Menu, File</a>: <a href="#File-Menu">File Menu</a></li>
3876 <li><a href="#index-Menu_002c-Help-118">Menu, Help</a>: <a href="#Help-Menu">Help Menu</a></li>
3877 <li><a href="#index-Menu_002c-Mode-49">Menu, Mode</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3878 <li><a href="#index-Menu_002c-Options-83">Menu, Options</a>: <a href="#Options-Menu">Options Menu</a></li>
3879 <li><a href="#index-Menu_002c-View-39">Menu, View</a>: <a href="#View-Menu">View Menu</a></li>
3880 <li><a href="#index-Menus-3">Menus</a>: <a href="#Menus">Menus</a></li>
3881 <li><a href="#index-mg_002c-option-154">mg, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3882 <li><a href="#index-mm_002c-option-156">mm, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3883 <li><a href="#index-Mode-Menu-50">Mode Menu</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3884 <li><a href="#index-mode_002c-option-396">mode, option</a>: <a href="#Other-options">Other options</a></li>
3885 <li><a href="#index-mono_002c-option-346">mono, option</a>: <a href="#User-interface-options">User interface options</a></li>
3886 <li><a href="#index-monoMode_002c-option-347">monoMode, option</a>: <a href="#User-interface-options">User interface options</a></li>
3887 <li><a href="#index-Move-Now_002c-Menu-Item-81">Move Now, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3888 <li><a href="#index-Move-Sound_002c-Menu-Item-104">Move Sound, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3889 <li><a href="#index-moves_002c-option-245">moves, option</a>: <a href="#ICS-options">ICS options</a></li>
3890 <li><a href="#index-movesound_002c-option-320">movesound, option</a>: <a href="#User-interface-options">User interface options</a></li>
3891 <li><a href="#index-movesPerSession_002c-option-136">movesPerSession, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3892 <li><a href="#index-mps_002c-option-135">mps, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3893 <li><a href="#index-msLoginDelay_002c-option-229">msLoginDelay, option</a>: <a href="#ICS-options">ICS options</a></li>
3894 <li><a href="#index-nameOfDebugFile_002c-option-407">nameOfDebugFile, option</a>: <a href="#Other-options">Other options</a></li>
3895 <li><a href="#index-ncp_002c-option-394">ncp, option</a>: <a href="#Other-options">Other options</a></li>
3896 <li><a href="#index-New-Game_002c-Menu-Item-6">New Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3897 <li><a href="#index-New-Shuffle-Game_002c-Menu-Item-7">New Shuffle Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3898 <li><a href="#index-New-variant_002c-Menu-Item-8">New variant, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3899 <li><a href="#index-niceEngines_002c-option-185">niceEngines, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3900 <li><a href="#index-noChessProgram_002c-option-395">noChessProgram, option</a>: <a href="#Other-options">Other options</a></li>
3901 <li><a href="#index-noGUI_002c-option-319">noGUI, option</a>: <a href="#User-interface-options">User interface options</a></li>
3902 <li><a href="#index-observe_002c-ICS-command-430">observe, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3903 <li><a href="#index-oldmoves_002c-ICS-command-432">oldmoves, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3904 <li><a href="#index-oldsave_002c-option-307">oldsave, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3905 <li><a href="#index-oldSaveStyle_002c-option-308">oldSaveStyle, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3906 <li><a href="#index-One_002dClick-Moving_002c-Menu-Item-106">One-Click Moving, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3907 <li><a href="#index-oneClickMove_002c-option-244">oneClickMove, option</a>: <a href="#ICS-options">ICS options</a></li>
3908 <li><a href="#index-Options-129">Options</a>: <a href="#Options">Options</a></li>
3909 <li><a href="#index-Options-Menu-84">Options Menu</a>: <a href="#Options-Menu">Options Menu</a></li>
3910 <li><a href="#index-Options_002c-adjudication-385">Options, adjudication</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
3911 <li><a href="#index-options_002c-Chess-engine-131">options, Chess engine</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3912 <li><a href="#index-Options_002c-ICS-211">Options, ICS</a>: <a href="#ICS-options">ICS options</a></li>
3913 <li><a href="#index-Options_002c-Load-and-Save-286">Options, Load and Save</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3914 <li><a href="#index-Options_002c-miscellaneous-393">Options, miscellaneous</a>: <a href="#Other-options">Other options</a></li>
3915 <li><a href="#index-Options_002c-User-interface-315">Options, User interface</a>: <a href="#User-interface-options">User interface options</a></li>
3916 <li><a href="#index-Other-programs-445">Other programs</a>: <a href="#Other-programs">Other programs</a></li>
3917 <li><a href="#index-Paste-Game_002c-Menu-Item-22">Paste Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3918 <li><a href="#index-Paste-Position_002c-Menu-Item-23">Paste Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3919 <li><a href="#index-Pause_002c-Menu-Item-58">Pause, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
3920 <li><a href="#index-Periodic-Updates_002c-Menu-Item-107">Periodic Updates, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3921 <li><a href="#index-pgnEventHeader_002c-option_0060-305">pgnEventHeader, option`</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3922 <li><a href="#index-pgnExtendedInfo_002c-option_0060-304">pgnExtendedInfo, option`</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3923 <li><a href="#index-pieceToSquareTable_002c-option-403">pieceToSquareTable, option</a>: <a href="#Other-options">Other options</a></li>
3924 <li><a href="#index-pixmap_002c-option-368">pixmap, option</a>: <a href="#User-interface-options">User interface options</a></li>
3925 <li><a href="#index-pixmapDirectory_002c-option-369">pixmapDirectory, option</a>: <a href="#User-interface-options">User interface options</a></li>
3926 <li><a href="#index-PolyglotBook_002c-option-199">PolyglotBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3927 <li><a href="#index-PolyglotDir_002c-option-197">PolyglotDir, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3928 <li><a href="#index-Ponder-Next-Move_002c-Menu-Item-108">Ponder Next Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3929 <li><a href="#index-ponder_002c-option-152">ponder, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3930 <li><a href="#index-ponderNextMove_002c-option-153">ponderNextMove, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3931 <li><a href="#index-Popup-Exit-Message_002c-Menu-Item-109">Popup Exit Message, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3932 <li><a href="#index-Popup-Move-Errors_002c-Menu-Item-110">Popup Move Errors, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3933 <li><a href="#index-popup_002c-option-325">popup, option</a>: <a href="#User-interface-options">User interface options</a></li>
3934 <li><a href="#index-popupExitMessage_002c-option-324">popupExitMessage, option</a>: <a href="#User-interface-options">User interface options</a></li>
3935 <li><a href="#index-popupMoveErrors_002c-option-326">popupMoveErrors, option</a>: <a href="#User-interface-options">User interface options</a></li>
3936 <li><a href="#index-pre_002c-option-251">pre, option</a>: <a href="#ICS-options">ICS options</a></li>
3937 <li><a href="#index-Premove_002c-Menu-Item-111">Premove, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3938 <li><a href="#index-premove_002c-option-252">premove, option</a>: <a href="#ICS-options">ICS options</a></li>
3939 <li><a href="#index-Problems-440">Problems</a>: <a href="#Problems">Problems</a></li>
3940 <li><a href="#index-queen_002c-option-327">queen, option</a>: <a href="#User-interface-options">User interface options</a></li>
3941 <li><a href="#index-Quiet-Play_002c-Menu-Item-112">Quiet Play, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3942 <li><a href="#index-quiet_002c-option-253">quiet, option</a>: <a href="#ICS-options">ICS options</a></li>
3943 <li><a href="#index-quietPlay_002c-option-254">quietPlay, option</a>: <a href="#ICS-options">ICS options</a></li>
3944 <li><a href="#index-Reload-CMail-Message_002c-Menu-Item-16">Reload CMail Message, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3945 <li><a href="#index-Reload-Same-Game_002c-Menu-Item-127">Reload Same Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
3946 <li><a href="#index-Reload-Same-Position_002c-Menu-Item-128">Reload Same Position, Menu Item</a>: <a href="#Keys">Keys</a></li>
3947 <li><a href="#index-remoteShell_002c-option-410">remoteShell, option</a>: <a href="#Other-options">Other options</a></li>
3948 <li><a href="#index-remoteUser_002c-option-412">remoteUser, option</a>: <a href="#Other-options">Other options</a></li>
3949 <li><a href="#index-Reporting-bugs-439">Reporting bugs</a>: <a href="#Problems">Problems</a></li>
3950 <li><a href="#index-Reporting-problems-441">Reporting problems</a>: <a href="#Problems">Problems</a></li>
3951 <li><a href="#index-Resign_002c-Menu-Item-67">Resign, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
3952 <li><a href="#index-Retract-Move_002c-Menu-Item-82">Retract Move, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
3953 <li><a href="#index-reuse_002c-option-177">reuse, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3954 <li><a href="#index-reuse2_002c-option-179">reuse2, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3955 <li><a href="#index-reuseFirst_002c-option-178">reuseFirst, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3956 <li><a href="#index-reuseSecond_002c-option-180">reuseSecond, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3957 <li><a href="#index-Revert_002c-Menu-Item-28">Revert, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
3958 <li><a href="#index-ringBellAfterMoves_002c-option-322">ringBellAfterMoves, option</a>: <a href="#User-interface-options">User interface options</a></li>
3959 <li><a href="#index-rsh_002c-option-409">rsh, option</a>: <a href="#Other-options">Other options</a></li>
3960 <li><a href="#index-ruleMoves_002c-option-392">ruleMoves, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
3961 <li><a href="#index-ruser_002c-option-411">ruser, option</a>: <a href="#Other-options">Other options</a></li>
3962 <li><a href="#index-sameColorGames_002c-option-158">sameColorGames, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3963 <li><a href="#index-Save-Game_002c-Menu-Item-13">Save Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3964 <li><a href="#index-Save-Position_002c-Menu-Item-14">Save Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
3965 <li><a href="#index-Save-Settings-Now_002c-Menu-Item-116">Save Settings Now, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3966 <li><a href="#index-Save-Settings-on-Exit_002c-Menu-Item-117">Save Settings on Exit, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3967 <li><a href="#index-saveGameFile_002c-option-295">saveGameFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3968 <li><a href="#index-saveOutOfBookInfo_002c-option_0060-306">saveOutOfBookInfo, option`</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3969 <li><a href="#index-savePositionFile_002c-option-303">savePositionFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3970 <li><a href="#index-saveSettingsFile_002c-option-310">saveSettingsFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3971 <li><a href="#index-scp_002c-option-161">scp, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3972 <li><a href="#index-sd_002c-option-143">sd, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3973 <li><a href="#index-searchDepth_002c-option-144">searchDepth, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3974 <li><a href="#index-searchTime_002c-option-142">searchTime, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3975 <li><a href="#index-secondChessProgram_002c-option-162">secondChessProgram, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3976 <li><a href="#index-secondComputerString_002c-option-176">secondComputerString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3977 <li><a href="#index-secondDirectory_002c-option-172">secondDirectory, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3978 <li><a href="#index-secondHasOwnBookUCI_002c-option-203">secondHasOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3979 <li><a href="#index-secondHost_002c-option-168">secondHost, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3980 <li><a href="#index-secondInitString_002c-option-174">secondInitString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3981 <li><a href="#index-secondIsUCI_002c-option-196">secondIsUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3982 <li><a href="#index-secondNeedsNoncompliantFEN_002c-option-189">secondNeedsNoncompliantFEN, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3983 <li><a href="#index-secondNPS_002c-option-146">secondNPS, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3984 <li><a href="#index-secondOptions_002c-option-187">secondOptions, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3985 <li><a href="#index-secondProtocolVersion_002c-option-182">secondProtocolVersion, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3986 <li><a href="#index-secondScoreAbs_002c-option-184">secondScoreAbs, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3987 <li><a href="#index-secondTimeOdds_002c-option-148">secondTimeOdds, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3988 <li><a href="#index-secondXBook_002c-option-205">secondXBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3989 <li><a href="#index-seekGraph_002c-option-239">seekGraph, option</a>: <a href="#ICS-options">ICS options</a></li>
3990 <li><a href="#index-set_002c-ICS-command-429">set, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
3991 <li><a href="#index-Settings_002c-Engine-192">Settings, Engine</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
3992 <li><a href="#index-SettingsFile_002c-option-311">SettingsFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3993 <li><a href="#index-sg_002c-option-240">sg, option</a>: <a href="#ICS-options">ICS options</a></li>
3994 <li><a href="#index-sgf_002c-option-294">sgf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
3995 <li><a href="#index-sh_002c-option-167">sh, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
3996 <li><a href="#index-Shortcut-keys-124">Shortcut keys</a>: <a href="#Keys">Keys</a></li>
3997 <li><a href="#index-Show-Coords_002c-Menu-Item-113">Show Coords, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
3998 <li><a href="#index-Show-Engine-Output_002c-Menu-Item-42">Show Engine Output, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
3999 <li><a href="#index-Show-Evaluation-Graph_002c-Menu-Item-44">Show Evaluation Graph, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4000 <li><a href="#index-Show-Game-List_002c-Menu-Item-45">Show Game List, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4001 <li><a href="#index-Show-Move-History_002c-Menu-Item-43">Show Move History, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4002 <li><a href="#index-showButtonBar_002c-option-345">showButtonBar, option</a>: <a href="#User-interface-options">User interface options</a></li>
4003 <li><a href="#index-showCoords_002c-option-335">showCoords, option</a>: <a href="#User-interface-options">User interface options</a></li>
4004 <li><a href="#index-showTargetSquares_002c-option-348">showTargetSquares, option</a>: <a href="#User-interface-options">User interface options</a></li>
4005 <li><a href="#index-showThinking_002c-option-151">showThinking, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4006 <li><a href="#index-shuffleOpenings_002c-option-190">shuffleOpenings, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4007 <li><a href="#index-size_002c-option-331">size, option</a>: <a href="#User-interface-options">User interface options</a></li>
4008 <li><a href="#index-sNoOwnBookUCI_002c-option-201">sNoOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4009 <li><a href="#index-soundChallenge_002c-option-275">soundChallenge, option</a>: <a href="#ICS-options">ICS options</a></li>
4010 <li><a href="#index-soundChannel_002c-option-272">soundChannel, option</a>: <a href="#ICS-options">ICS options</a></li>
4011 <li><a href="#index-soundIcsAlarm_002c-option-279">soundIcsAlarm, option</a>: <a href="#ICS-options">ICS options</a></li>
4012 <li><a href="#index-soundIcsDraw_002c-option-282">soundIcsDraw, option</a>: <a href="#ICS-options">ICS options</a></li>
4013 <li><a href="#index-soundIcsLoss_002c-option-281">soundIcsLoss, option</a>: <a href="#ICS-options">ICS options</a></li>
4014 <li><a href="#index-soundIcsUnfinished_002c-option-283">soundIcsUnfinished, option</a>: <a href="#ICS-options">ICS options</a></li>
4015 <li><a href="#index-soundIcsWin_002c-option-280">soundIcsWin, option</a>: <a href="#ICS-options">ICS options</a></li>
4016 <li><a href="#index-soundKibitz_002c-option-273">soundKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
4017 <li><a href="#index-soundMove_002c-option-278">soundMove, option</a>: <a href="#ICS-options">ICS options</a></li>
4018 <li><a href="#index-soundProgram_002c-option-268">soundProgram, option</a>: <a href="#ICS-options">ICS options</a></li>
4019 <li><a href="#index-soundRequest_002c-option-276">soundRequest, option</a>: <a href="#ICS-options">ICS options</a></li>
4020 <li><a href="#index-Sounds-269">Sounds</a>: <a href="#ICS-options">ICS options</a></li>
4021 <li><a href="#index-soundSeek_002c-option-277">soundSeek, option</a>: <a href="#ICS-options">ICS options</a></li>
4022 <li><a href="#index-soundShout_002c-option-270">soundShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4023 <li><a href="#index-soundSShout_002c-option-271">soundSShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4024 <li><a href="#index-soundTell_002c-option-274">soundTell, option</a>: <a href="#ICS-options">ICS options</a></li>
4025 <li><a href="#index-spf_002c-option-302">spf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4026 <li><a href="#index-st_002c-option-141">st, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4027 <li><a href="#index-Stop-Examining_002c-Menu-Item-69">Stop Examining, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4028 <li><a href="#index-Stop-Observing_002c-Menu-Item-68">Stop Observing, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4029 <li><a href="#index-sUCI_002c-option-194">sUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4030 <li><a href="#index-Tags_002c-Menu-Item-46">Tags, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4031 <li><a href="#index-tc_002c-option-133">tc, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4032 <li><a href="#index-td_002c-option-292">td, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4033 <li><a href="#index-telnet_002c-option-220">telnet, option</a>: <a href="#ICS-options">ICS options</a></li>
4034 <li><a href="#index-telnetProgram_002c-option-222">telnetProgram, option</a>: <a href="#ICS-options">ICS options</a></li>
4035 <li><a href="#index-Test-Legality_002c-Menu-Item-115">Test Legality, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4036 <li><a href="#index-testClaims_002c-option-389">testClaims, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4037 <li><a href="#index-testLegality_002c-option-330">testLegality, option</a>: <a href="#User-interface-options">User interface options</a></li>
4038 <li><a href="#index-thinking_002c-option-150">thinking, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4039 <li><a href="#index-Time-Control_002c-Menu-Item-85">Time Control, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4040 <li><a href="#index-timeControl_002c-option-134">timeControl, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4041 <li><a href="#index-timeDelay_002c-option-293">timeDelay, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4042 <li><a href="#index-timeIncrement_002c-option-138">timeIncrement, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4043 <li><a href="#index-timeOddsMode_002c-option-149">timeOddsMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4044 <li><a href="#index-title_002c-option-342">title, option</a>: <a href="#User-interface-options">User interface options</a></li>
4045 <li><a href="#index-titleInWindow_002c-option-343">titleInWindow, option</a>: <a href="#User-interface-options">User interface options</a></li>
4046 <li><a href="#index-Training_002c-Menu-Item-56">Training, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4047 <li><a href="#index-trivialDraws_002c-option-391">trivialDraws, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4048 <li><a href="#index-Truncate-Game_002c-Menu-Item-30">Truncate Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4049 <li><a href="#index-Two-Machines_002c-Menu-Item-53">Two Machines, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4050 <li><a href="#index-Upload-to-Examine_002c-Menu-Item-70">Upload to Examine, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4051 <li><a href="#index-usePolyglotBook_002c-option-198">usePolyglotBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4052 <li><a href="#index-User-interface-options-314">User interface options</a>: <a href="#User-interface-options">User interface options</a></li>
4053 <li><a href="#index-userName_002c-option-413">userName, option</a>: <a href="#Other-options">Other options</a></li>
4054 <li><a href="#index-useTelnet_002c-option-221">useTelnet, option</a>: <a href="#ICS-options">ICS options</a></li>
4055 <li><a href="#index-variant_002c-option-398">variant, option</a>: <a href="#Other-options">Other options</a></li>
4056 <li><a href="#index-variations_002c-option-285">variations, option</a>: <a href="#ICS-options">ICS options</a></li>
4057 <li><a href="#index-vars_002c-ICS-command-428">vars, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4058 <li><a href="#index-View-Menu-40">View Menu</a>: <a href="#View-Menu">View Menu</a></li>
4059 <li><a href="#index-whitePieceColor_002c-option-371">whitePieceColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4060 <li><a href="#index-who_002c-ICS-command-420">who, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4061 <li><a href="#index-xflash_002c-option-352">xflash, option</a>: <a href="#User-interface-options">User interface options</a></li>
4063 <div class="contents">
4064 <h2>Table of Contents</h2>
4066 <li><a name="toc_Top" href="#Top">Introduction</a>
4067 <li><a name="toc_Major-modes" href="#Major-modes">1 Major modes</a>
4068 <li><a name="toc_Menus" href="#Menus">2 Menus, buttons, and keys</a>
4070 <li><a href="#File-Menu">2.1 File Menu</a>
4071 <li><a href="#Edit-Menu">2.2 Edit Menu</a>
4072 <li><a href="#View-Menu">2.3 View Menu</a>
4073 <li><a href="#Mode-Menu">2.4 Mode Menu</a>
4074 <li><a href="#Action-Menu">2.5 Action Menu</a>
4075 <li><a href="#Engine-Menu">2.6 Engine Menu</a>
4076 <li><a href="#Options-Menu">2.7 Options Menu</a>
4077 <li><a href="#Help-Menu">2.8 Help Menu</a>
4078 <li><a href="#Keys">2.9 Other Shortcut Keys</a>
4080 <li><a name="toc_Options" href="#Options">3 Options</a>
4082 <li><a href="#Chess-engine-options">3.1 Chess Engine Options</a>
4083 <li><a href="#UCI-_002b-WB-Engine-Settings">3.2 UCI + WB Engine Settings</a>
4084 <li><a href="#ICS-options">3.3 ICS options</a>
4085 <li><a href="#Load-and-Save-options">3.4 Load and Save options</a>
4086 <li><a href="#User-interface-options">3.5 User interface options</a>
4087 <li><a href="#Adjudication-Options">3.6 Adjudication Options</a>
4088 <li><a href="#Other-options">3.7 Other options</a>
4090 <li><a name="toc_Chess-Servers" href="#Chess-Servers">4 Chess Servers</a>
4091 <li><a name="toc_Firewalls" href="#Firewalls">5 Firewalls</a>
4092 <li><a name="toc_Environment" href="#Environment">6 Environment variables</a>
4093 <li><a name="toc_Limitations" href="#Limitations">7 Limitations and known bugs</a>
4094 <li><a name="toc_Problems" href="#Problems">8 Reporting problems</a>
4095 <li><a name="toc_Contributors" href="#Contributors">9 Authors and contributors</a>
4096 <li><a name="toc_CMail" href="#CMail">10 CMail</a>
4098 <li><a href="#CMail-options">10.1 CMail options</a>
4099 <li><a href="#CMail-game">10.2 Starting a CMail Game</a>
4100 <li><a href="#CMail-answer">10.3 Answering a Move</a>
4101 <li><a href="#CMail-multi">10.4 Multi-Game Messages</a>
4102 <li><a href="#CMail-completion">10.5 Completing a Game</a>
4103 <li><a href="#CMail-trouble">10.6 Known CMail Problems</a>
4105 <li><a name="toc_Other-programs" href="#Other-programs">11 Other programs you can use with XBoard</a>
4107 <li><a href="#GNU-Chess">11.1 GNU Chess</a>
4108 <li><a href="#Fairy_002dMax">11.2 Fairy-Max</a>
4109 <li><a href="#HoiChess">11.3 HoiChess</a>
4110 <li><a href="#Crafty">11.4 Crafty</a>
4111 <li><a href="#zic2xpm">11.5 zic2xpm</a>
4113 <li><a name="toc_Copyright" href="#Copyright">Copyright</a>
4114 <li><a name="toc_Copying" href="#Copying">GNU GENERAL PUBLIC LICENSE</a>
4115 <li><a name="toc_Index" href="#Index">Index</a>
projects / xboard.git / blob