Initial checkin. I created this by combining the XBoard 4.2.6 and

[xboard.git] / ToDo

Possible improvements   **=somewhat higher priority
---------------------------------------------------

20. Some way to back up, explore variations, then return to the main
line and restore moves we backed out.  Should also support exploring
side branches while loading a game file.  Push/pop buttons?  Button to
fork another xboard in same state as current one?

20a. Allow side branches to be remembered in game files (and
understood on LoadGame).  Use PGN variation notation.

**62a. Support series of time controls as in later gnuchess 4.0.x
versions (and real tournaments!).  Needs a protocol extension to
"level"; this is now planned for protover 3.

62b. Perhaps we could also support the kind of clock where you get K
seconds per move, plus a reserve of J seconds per game that is used
when a move takes more than K seconds.  The degenerate form of this
with J=0 is desirable in itself.  Needs a protocol extension.

68. WinBoard has some features not in xboard.  Among others:
68a. LoadGameOptions dialog             (good to add)
68b. SaveGameOptions dialog             (good to add)
68c. TimeControl dialog                 (good to add)
68g. Font dialog.                       (leave out)
68h. Colors dialog.                     (leave out)
68i. Board size on Options menu         (good to add)
68j. Resize with mouse
68k. Highlight dragging
68m. Move typein from keyboard.         (good to add)

69. xboard has some features not in WinBoard.  Among others:
69c. Font size selection by pattern fill-in. (leave out)
69d. Alternate bitmaps specified at runtime. (good to add, often requested)
69e. Flashing.

71. Allow restart after ICS logout instead of exiting?  Many requests
for this.

71a. Would be useful to drop into NCP mode after ICS logout and allow
for reconnect later.  For instance, this would let you save your last
partial game if you didn't have autosave on.

72. Allow switching among ICS, NCP, GNU modes??

74. Observe/play multiple games, each with its own window.  Hard.

80. Clone command.  Saves current game to a file foo, then starts up
another copy of xboard with -lgf foo.  Should probably note current
state of some options and give command line flags to set them the same
way in child.  What about -ncp mode, though?  Might want that to be
different.  Would be nice to have a -moveNumber flag to position the
child to the same move number in the current game.

91. Would be nice to have an option to overwrite save file instead of
appending.

95. "Have the clock indicate how long the computer/player has been
thinking for when the -st option is used. This should be how long for
the current move only." (Dino Dini)

97. "Have the ability to change the level of the gnuchess during a
game. For analysis purposes, sometimes it is useful to have the
computer think really hard about certain positions." (Dino Dini)

98. Reorganize the source and split it into more files.

107. Changing time control during a game could be made to work.
Current (WinBoard only) way of changing at start is suboptimal.

108. Could add search depth and time per move to (WinBoard)
TimeControl dialog.

140. LoadPosition needs better checking for invalid data.

142. xboard needs a real file chooser dialog.  Jeff Woolsey submitted
code to merge in the one from Ghostview, but said it works only on
X11R5 or later.  I have not yet tried his code or looked to see if it
could be made to work on X11R4.

147. Improve display of held pieces in bughouse mode, putting them
closer to the player's side of the board, and perhaps using icons (and
allowing dragging from the icons to drop a piece).  Actually, moving
the clocks would be beneficial too, so that it's easier to visually
associate the right clock with the right player when looking at two
boards during a bughouse match (with two copies of xboard running).
Maybe multiple window layouts should be user-selectable.

150. Keep track of castling availability, en-passant availability, and
FEN half-move clock (for 50-move rule), pass the availability
information to the move generator through the existing interface, and
load/save it in the FEN code.

150a. Note that not keeping track of ep creates a bug in mate
detection.  In certain positions, moving a pawn from the 3rd to 4th
rank gives mate, but it is not detected because if the pawn had moved
to the same position from the 2nd rank, ep capture would have been
legal and there would be no mate.

150b. Note that although we try to put in e.p. availability when
writing FEN, this works only if we have the move that got us to this
position in the moveList. If we load a position from FEN, the
e.p. availability field of the FEN is lost.

152. Generate the info file, man page, perhaps html, and perhaps even
the WinBoard help file from the same sources.  Right now,
substantially the same text is duplicated in three places.  This is
a huge pain in the neck.

157. Idea: if Zippy flags some number of times in a row and keeps
getting told the opponent is not out of time (presumably due to
timestamp/timeseal), he should issue an adjourn or abort.

160. The xboard CTRL key flashback feature is bad in Analysis mode.
Flashing back throws away the analysis.

161. SIGINT doesn't work for local programs on Win32.  There is an
equivalent, GenerateConsoleCtrlEvent(CTRL_C_EVENT), but I haven't
gotten it to work thus far.  It seems that WinBoard and the chess
engine don't "have the same console"; indeed, neither has a console.

162. Supply a non-X Zippy for Unix.  Perhaps use the code from Klaus
Knopper.

167. Alternative bitmaps loaded at runtime for WinBoard.

169. Upload Game on file menu?  This would upload the current game
moves into a scratch examined game on ICS.  Could do Upload Position
too.  Some code to do Upload Game was contributed, but it didn't
handle setup positions, variants, checking for proper gameMode, etc.,
so I couldn't use it.

170. Auto step every k seconds should be a general feature you can
turn on at any time, not just in LoadGame.  What should GUI be?

171. Displaying thinking in a separate window should be an option
available at all times when Show Thinking makes sense, not just in
analysis mode.  It should perhaps be orthogonal to analysis mode.

172. Should analysis window scroll instead of showing only the last
line?  There could be an extra checkbox to show all chess engine
output in it.

178. Need reliable kill for chess engine on Win32.  See also 161.

181. Some people want -sgf to save only played games, not observed and
examined games.  Others like it to save them all.  Make this an option?

183. Search feature in Game List dialog [Igor Eged].

187. "Log session" feature for ICS window.

193. Some users have reported xboard redraw bugs, but I have not
been able to reproduce them on the Digital Unix, Linux, or eXcursion X
servers (xboard).

c. From Hawk:  
Dragging in xboard does not work 100%.  
* The dragged piece may disappear (try some fast e2-d3 movements - 
  this is easy to reproduce).
* The dragged piece may be placed on an illegal position (this 
  happens less frequently, but it _can_ be reproduced by doing the same
  as above).
* In both of the above cases, the board is correct after forcing a 
  redraw (ie. minimizing/restoring the window)
I'm using eXodus - a win32 X server, perhaps it's buggy. [Seems that way,
or just possibly, these could be bugs that are fixed in 3.6.11beta or
3.6.12beta.]

d. One user reports: "If you are 'holding' a piece over the square you
want to go to and that move becomes illegal but you make it anyway,
the display sometimes corrupts and a partial piece appears..sometimes
a whole piece."  This was under RedHat 6.0.

194. A few users have reported drawing problems with WinBoard.  There
may be some color map problem on certain displays.  I might possibly
have fixed this already; I cannot reproduce it.  The common thing
seems to be black pieces changing to white.  This may depend on having
customized the board colors.  I suspect many of these problems are
buggy Windows drivers for particular display cards.  (May be worked
around in 4.2.0 with reprocessed .bmp files.)

a. From mulesmurf: if i log in and then move the board, it will happen
that the black [pieces] change to white.

c. People have sent pictures where the grid didn't get redrawn.  This
produces random bits in the grid area from uninitialized memory.
Could this be a resource leak?

d. From James Van Buskirk: I did notice one problem tonight playing
against Comet under FX!32 1.2 (Comet, not winboard ran under FX!32):
for a couple of moves winboard didn't turn off the highlighting of the
square I dropped the piece on until Comet had moved.  Later, the
problem fixed itself.  Have other users noticed this?  [No.]

e. One user reports: Lastly, there is some sort of slight bug in the
piece dragging code, but it comes up only very occasionally (once in
500 moves?)...basically, I'm dragging, change my mind, throw the piece
of the side of the board, and instead it gets stuck not inside a
square.  It's really disconcerting, this piece just sitting across
square boundaries.  When you make another move, it gets cleared up and
goes back where it's supposed to.  [Might be fixed in 4.0.6, but I
couldn't reproduce this, so I can't be sure.]

f. DAV says: "When I resized the board on win 95 and made it smaller
some of the pieces turned into junk (I'm not able to give a screen
shot)."  Later: "Seems to happen on the three sizes below small.
Win98 and NT seem to be ok, trying to get more win95 users to test
it."  Works fine for me on Win 95...  [Might have been fixed by the
cleanup of the Windows .bmp's that happened sometime before version
4.2.3]

195. Flash Moves works at the end of every change to the board, using
some rather gross code in DrawPosition.  This code should perhaps be
ripped out and the flashing done from inside AnimateMove instead.

197. More color distinctions.  Maybe allow several user-selected channels
to have their own colors.

198. More sounds.  Some possiblities: distinguish White vs. Black move
or your move vs. opponents, distinguish different kinds of
win/loss/draw/unfinished (checkmate, resignation, stalemate, other
draws, opponent disconnected, etc.), game ends when you aren't playing
and/or aren't in ICS mode, differentiate amongst requests (draw offer,
etc.), **check, got new offboard piece (by piece type?), opponent got
new offboard piece (ditto), arrival notification, "* who has an
adjourned game with you," draw declined, moretime received.

199. Maybe put user names instead of White and Black on clocks, or
user names above or below clocks in a smaller font.

200. I don't like these ideas, but some people do:
a. Highlight all of the squares that the piece you are moving can go to.
b. Clicking on the piece moves it immediately if it has only one legal move.
c. Allow clicking on the destination, then the source.
d. I guess highlight the pieces that can go to that destination.
e. Clicking on a destination that only one piece can go to moves it there.

201. mulesmurf: piece counter so we know exactly the score 

202. mulesmurf: ziics pieces, board along with color intensity

204. Hawk at Fri May 15, 12:58 CDT 1998: a minor thing with xboard:
the coords disappear while dragging from a square with coords on it.
[They come back when the drag is finished.]

208. WinBoard sometimes comes up with one of the menu bar items grayed
out (one that should not be).  I've seen this on different entries at
different times.

213. Maybe add Silence to sound menu -- parallel to Monochrome on
color menus.

214. Maybe easier startup dialog customize:
a. Buttons to add/delete/move(?) current string to/from/within current list.
b. Or maybe auto-add newly typed/edited strings up to some limit.
c. Also a drop-down for Additional Options.

216. Maybe shorten menu names in WinBoard to one char if and only if
the menu bar would wrap with longer names.

**217. Easier way to add engines to the WinBoard startup dialog.
Ideally, an engine author should be able to supply a simple
configuration file or script that installs his engine.  "*.wbe" idea.

218. Some folks would like Highlight Last Move to apply only to
opponent's moves.

219. From Jorge Monasterio: Support automatic game starts when in
tournament. In other words, do that "match bigolfish mann 5 0 black"
automatically based on the info sent from mamer.  [I would need to
play in some tournaments before I could evaluate this idea or fill in
the details.]

222. Could support time handicaps.

223. Bug: very long comments cause buffer overflow.  Need to revamp
the way comments are parsed and returned from parser.l to fix this.

224. Larry Parrish requests: In an automated multi-games match I would
like to load the n-th game from the file for the n-th game of the
match.  [That is, when -mg and -lgf or -lpf are used together without
-lgi or -lpi.]

225. From pulp: another bug (maybe with the Microsoft RichEdit
control) I've observed is when you flood the edit control it loses the
bottom.  Eg. "games" will scroll along then start slipping until by
the end of the list you are really looking at the middle of the list
and have to manually scroll back to the bottom.  [May be fixed?]

225a. Resizing the WinBoard ICS interaction window can cause the cursor
to be off the screen, which stops scrolling.

226. From pulp: Clipboard persistence.  If I copy text, then the text
disappears when Winboard is closed.  Eg.: Log in, highlight and copy a
web page address, close, go to browser, paste *nothing*.  [How does
one do this in Windows?]

**227. Illegal moves from buggy engine should stop the game.  

227a. In engine-engine matches, the buggy engine should lose.  An
engine that crashes should lose and perhaps get restarted for the next
game.

227b. Maybe when an engine playing in Zippy mode exhibits a bug, we
should do a little more too.  Perhaps "say Sorry, the engine seems to
have a bug", resign or abort, and maybe force an engine restart for the
next game.

**227c. We should also detect and stop the game on false mate or draw
claims, rejecting a legal move, or (maybe) missed claims of mate or
draw.  Note that draw claims require checking for repetition, 50 move
rule, and insufficient material as well as stalemate, so this is
nontrivial.

228. RichEdit bug: sometimes a line gets indented as if it were
wrapped when it should be flush left.

**229. Support for sending moves from the partner's game to a bughouse
engine.  Ben Dean-Kanemura submitted support that works without adding
general multi-game support, by relaying the moves without processing
them.  Should also send holding updates and clock times; not sure if
Ben's code does that.  Needs to be a new "feature" command option, and
to be documented in engine-intf.html, removing the note that this may
be done in the future.

231. See Ed Collins's WinBoard bug list on his pages:

231b. If you save an ICS examined game to disk as a PGN file, it
doesn't report the end-of-game result in both the header and at the
end of the notation.  [It doesn't get this info from the server, but
maybe there is a way it could.]

232. From Ed Collins's WinBoard wish list on his pages:

232b. Multiple winboard.ini files for different moods, loadable from
inside the program.

232c. Fix bug where fics% prompt is not suppressed when using
timeseal.  This has something to do with a timeseal deficiency whose
details I've forgotten, but there must be some way to fix it.

232e. When using the server's "examine" mode to examine a previously
played game, have the game clocks display the time that each player
currently had after each move was made.

232f. [Not from Ed] Deal with ICC game relays where an "examined" game
is supposed to have running clocks.  Not sure if this is still an issue.

232g. Customizable on-screen buttons [i.e., toolbar or toolbox].

232h. Customizable function keys.  Currently xboard can bind a key to
any built-in xboard function.  Should extend this to WinBoard, and
also (in both programs) support sending an arbitrary ICS command when
button is pressed.

233. See if anything from LightningRulez should be added.  Premove is
now included (from Winboard Plus), but maybe there are other useful
things too.

241. There might still be bugs in xboard and/or winboard when moves
come in from ICS during drag animation, though I can't reproduce them.
DAV saw the opponent's piece fail to be erased from the source square, if
I understood his message right.  [DAV says this still exists in 4.2.5.
I think bug 426 is a duplicate.  The description is clearer there.]

242. User-defined "looking_at" patterns and actions.  This is hard to
bombproof.

**243. "Rematch" shortcut in /cp mode.

246. Maybe auto-close comment window when user goes to the next move.
Whether this is desirable really depends on the content of the
comment, but maybe it is rare to have a long comment that discusses
the plan several moves ahead and should be left up.

248. Would be nice to support retract move after checkmate or draw (etc.).

254. Different tray icons for interaction window vs. board (suggestion
from FICS).

256. One user asked for "delete" option in game lists.  This requires
rewriting the file to close up the hole, so it's pretty heavyweight.
Next people will be asking for move, sort, search, and other game
database functionality; ugh.

**257. Would be nice to find a way to safely implement "retract move"
when the engine is still on move.  (using ping/pong)

**260. General mechanism where engine can declare engine properties that
the user can frob and xboard/winboard will put up a simple dialog to
allow user to view and set them.  See email message "special engine
commands" from Steffen Jakob.

261. Check that "quit" is sent to engine properly if ICS connection
fails to open due to error from timestamp/timeseal.  "wzrdking" had a
case where it didn't.  Timetamp had failed with "Host name not found
by name server" (because in fact there was no internet connection, arrgh).

273. Displaying the names of the players from a PGN file in the header
of the window does not work if there is only one game in the file.
The filename is shown instead.  (This was intentional, but maybe a
poor idea.)

274. Command to go to move number N, with entry box for N.

276. Make grid optional in winboard?  Note that the highlight options
don't work without it.

276a. Make color of grid an option, instead of always black.

277. Flooding xboard -zt + timestamp with tells hangs timestamp after
a while.  xboard is blocked writing to the timestamp pipe.  timestamp
is in an unknown state, not reading from the pipe nor responding to
pings.  (Confirmed with the software running on milwaukee, Red Hat
5.2)

278. Flooding winboard -zt + timestamp with tells hangs winboard after
a while.  timestamp still responds to pings.  This reported by
nudnick; I haven't tried to reproduce it yet.  He also says that
windows explorer then crashed when he tried to close winboard.

279. Idea from an anonymous ICSer: piece drop menu could have images,
not words.  [Or maybe both?]  Also might be easier to select
accurately from it if horizontally arranged, or in a 3x2 grid.

280. Need a way to log raw ICS i/o in WinBoard.debug file, as xboard's
debug mode does.  Would help in finding bugs at times.

284. dxterm hangs when it receives the escape sequence that sets the
title bar on xterm.  I think some other xterm substitutes do too.

**287. WinBoard can look funny if you are using themes because it
unconditionally uses white for certain colors instead of the default
background.

289. Merge WinBoard support for the Henter-Joyce JAWS screen reader.
Source code (zip file containing modified WinBoard 4.0.2 source) is at
ftp://ftp.henter-joyce.com/users/hj/winboard/WinboardSource.exe.  It
would be interesting to make this work with festival (free Unix speech
synth) or other speech synthesizers too.

290. Could have limited voice output without a speech synthesizer by playing
wav files for piece names and square numbers.  Idea suggested by Hannu
Wegner.

291. Would be great to support DGT, Novag Universal chessboard, etc.
I'm not likely to fork out the cash to buy either for testing, however.
Note users have done various things along these lines.

292. When an engine is analyzing, it would be cool to have a way to
automatically play out its current PV (or even older ones) on a board.
These PVs could be saved as variations when we have variation support.

297. Windows users expect all programs to have a Print function, even
though there are other ways to print.  Useful items to make printable:
PGN game scores (which are plain text, of course), maybe FEN position
diagrams, maybe graphical position diagrams (i.e., same as pressing
the "Print Screen" function key and printing the clipboard).

298. One user suggests that automatic move stepping should not start
until you press OK in the tags window.  This could be a good idea, but
I think I'd rather have automatic stepping never start until you press
a "play" button on the main window, and have that button always
available, not just when loading a game from a file.

299. One user suggested being able to jump to a specific move by
typing its number (followed by ... if it's to be black's move).

300. Can I put a hyperlink (that will invoke a browser) directly onto
the WinBoard Help menu or in the Help file?  Useful to take users to
my chess page.

302. On NT, check if the board is redrawn properly when exiting from
the screen saver.

308. There is some tricky way to maximize the WinBoard board window,
although there isn't supposed to be.  Maybe prevent this, or else
legalize it and make sure something reasonable looking happens.
Note: the trick is to select one of the "tile" options on the Windows
task bar.  Not clear what should happen in this case.

309. Avoid endlessly flagging every second when opponent is lagged out
and autoflag is on.  Automatically courtesy-adjourn (or abort if
unrated) instead, at least if in zippy mode.

310. Weird bug: the last character of a FICS output can appear on the
next line, *after* the fics% prompt, according to one user.  I might
have seen something like this myself once too.

314. One person wanted his engine to see tells when running in Zippy
mode.  I doubt this is generally useful, so I haven't added the code I
wrote for him.  (I can query for "tellfrom" in my mail file to find
it.)

314a. Another person wants his computer account to relay tells to his
personal account.

319. One user would like to be able to reload a PGN file and resume a
game against an engine as if after an adjournment, with the clocks
(and moves to next time control) restored as they were when the game
was saved.

320. Display ratings of ICS players in the title bar (if there is room,
presumably), or somewhere, anyway.

321. Maybe refresh the EditTags window if the gameInfo changes and the
window is up.  (WinBoard now does this when entering MachineWhite,
MachineBlack, or TwoMachines mode -- not very general.  From Winboard Plus.)

322. One user requested that Zippy games use the engine name instead
of the ICS handle in the PGN tags, as he uses multiple engines on his
account.  (My response was "I'd say it should give both"; not sure just
how to do that, though.)

324. I'm told that Blitzin supports animated dragging without holding
down the mouse button and that this is "much better" and I should try
it too.  As yet I haven't.

326. Full support for variants and variant-capable engines in all
modes, not just ICS mode.  Here are some items still needed.  Some if
not all should probably wait for a rewrite, not be added to the
current code base.

326a. Menu to let you see and change the current variant type, not
just a command-line argument as at present.

326b. crazyhouse: Keep track of holdings and display them, keep track
of what onboard pieces are promoted so they will revert if captured,
understand offboard interposition to stop mate.  

326bb. One user asked for a Czech variant of crazyhouse where pawns are
given to the opponent when they reach the 8th rank (after capturing, if
it's a capture) instead of promoting.

326c. bughouse: Features in 326a would be helpful for editing one board
of a bughouse game, and getting mate indication right even in ICS mode.
In the longer term, could understand BPGN, support editing two-board games.

326d. wildcastle: Allow wildcastle castling only when playing this variant!
Maybe support automatic shuffling for local play.

326e. nocastle: Maybe support automatic shuffling for local play.
Note that several types of ICS shuffle chess fall under this variant.
Note that this isn't really a variant, since if we kept proper track
of castling rights and used "setboard FEN" or the ChessBase extension
of "edit" to set them, it could be treated as normal chess with a
different starting position.

326f. fischerandom: Maybe support automatic shuffling for local play.
Support castling.  Currently, you can probably play Fischer Random
successfully on ICS by typing castling moves into the ICS Interaction
window, but they will not be animated correctly, and saved games will
not be loaded correctly if castling occurs.  FR castling is
problematic because the move cannot be specified by the starting and
ending coordinates of the king; in some starting positions there is a
legal non-castling move that moves the king the same way.  This
violates a deeply ingrained assumption in the implementation.  It also
breaks the GUI -- you need more than just dragging the king two
squares to indicate castling.  (Note: In FR notation, O-O is h-side
castling, O-O-O is a-side.  See "help fr_rules" and "help fr" on FICS
for rules.)

326g. kriegspiel: Could give some thought to how to support a
kriegspiel engine.  I doubt anyone will ever write one, though.

326h. losers: Know that captures are mandatory.  Understand the win
condition.

326i. suicide: Know that captures are mandatory.  Understand the win/draw
condition.

326j. giveaway: Know that captures are mandatory.  Understand the win
condition.

326k. atomic: Understand the win condition.

326l. 3check: Understand the win condition -- ugh, have to keep a
check counter!

327. Option to set the coord font color (or something) to make sure
there is always enough contrast with the square colors.

329. Bernhard Maerz would like a command line option to choose the PGN
player name for an engine, overriding the default of generating the
name from the engine filename.  This is for his ChessCall program.

331. Maybe the local autoflag menu option should *also* turn
server-side autoflag on/off by sending an appropriate set command.

**332. Bug: Autoflag for local engine/engine or engine/human matches
does not recognize that having your flag fall when your opponent has
insufficient mating material is a draw.  It counts the flag fall as a
loss.

336. Of course lots of people ask for a graphical seek window.

339. There are probably some incompatibilities with chess.net, as they
have made a few gratuitous changes to message formats from the FICS
code base they started with, and perhaps they've added features since
without duplicating the syntax closely enough.  In particular it's
been reported that Zippy does not correctly send "partner" and
"variant" commands to bughouse engines on chess.net.  Also, I doubt
colorization works.  As a matter of personal choice I do not spend any
of my time supporting chess.net, but if others want to donate patches
that allow chess.net to be supported without breaking the support for
ICC and FICS, I am willing to install them.

342. Analysis mode automatically turns on the Show Thinking option;
the user must then turn it off manually after leaving analysis mode if
he doesn't want it.

343. Would be nice to change xboard keyboard shortcuts to not be plain
letters, make the new shortcuts work also in the ICS input box, and
make typing plain letters to the board redirect to the ICS input box
or the xterm.  Might want to change/remove the Ctrl binding at that time.

344. One user suggested having a way to save a position as a character
string that would produce a board diagram when rendered in MS Word in
a chess font.  Perhaps there is already a nice standalone tool for
this, though?

346. Could use a better way to pick default size.  Now we choose the
largest that fits on the screen, which is typically too big.  Not too
bad for WinBoard, but painful for xboard since it can't be resized
after starting.

349. Check that "quit" definitely makes it to the engine before exit,
if you exit via the File menu while a match is running.  Uli Tuerke
reported that maybe it sometimes doesn't (in WinBoard 4.0.5).

352. Perhaps recognize the ANSI escape sequence that FICS sends out
for the cls command and clear the ICS interaction window.

**353. WinBoard can crash when the engine outputs very long PV lines
(or debug output that looks like a PV).  In particular, lines that
start with 4 or more blanks following a "thinking" output line are
treated as continuation lines, and get concatenated into a 512-byte
buffer with no checking for overflow.  Generally we need a lot more
care to avoid buffer overflows inside both xboard and WinBoard.
[Note: changed the buffers to be 5120 bytes as a band-aid.]

**354. We currently let the user go directly from TwoMachines mode to
various other modes like MachineWhite or MachineBlack.  This may
confuse the engine that was on move, since we don't have a way to
force it to stop before it makes the move it was thinking about.
(use ping/pong to know when the engine has stopped)

355. Idea from LiveAndLetDie: have Zippy specially log games where it
loses to a substantially lower-rated player.  Such a game could
indicate an xboard bug, engine bug, or perhaps a computer-using
cheater.

356. Colorization for FICS tourney tells?  They look like this (ugh):
:DChessmaster [tourney #4]:
:hi

357. A few reports of WinBoard pieces being drawn incorrectly at
certain sizes.  I haven't reproduced this.  [Maybe worked around
in 4.2.0]

358. One report of WinBoard colorization not working, even after
restart, until the computer was rebooted.  Weird.

362. Running a very long automated match (/mg option) seems to crash
WinBoard eventually, usually after 300 to 500 games, sometimes later.
Reported by Josh Haglund.  Gets a "WINBOARD caused an invalid page
fault in module KERNEL32.DLL" dialog box from Windows.  See messages
from Josh for examples of the registers and stack dump.

362a. A few people have reported WinBoard crashing upon exit.

363. Maybe xboard should not set the window geometry for new popups,
or at least not the position.  The default positions aren't very good,
and setting them programmatically keeps knowledgeable X users from
customizing the positions with X resources.

366. Feature to let an engine observe an ICS game and run analysis
mode on the moves, perhaps whispering or channel-telling the results.
It's a little too easy to cheat with this feature or I might have
added it long ago.

369. Optionally send a periodic keepalive command to ICS.  Can be
used to defeat autologout, so should probably not be on by default.
Also should be useful to help Zippy notice more reliably when its
connection has hung, so that it can exit and a shell script (batch
file) can restart it.

370. One user requested a local noplay list for his computer player
because the FICS limit of 50 is too small.  He wants several hundred so
that he can noplay everyone who disconnects in a lost position.

374. Would be good to have a way to change engines without restarting
the interface.

376. WinBoard is said to crash or "lock up" when loading enormous PGN
files, like a 98 MB file that comes with (??) Crafty.  Win32 (at least
in the Win95 lineage) has a limit of 32,767 items in a list box
widget.  That might explain this problem.

376a. xboard exceeds limits in X and/or Xaw if a PGN file has too many
games.  (The virtual window that the list box can scroll through
becomes too many pixels high.)  This has odd effects; the window
height of the game list seems to get reduced mod 2^16 or something.
Maybe detect this and do something nicer about it, like stop loading
when the window is full and pop up a warning.

378. One Solaris user didn't have the "strip" program, so the
install-sh script used by xboard "make install" failed.  Check for
this?  Yuck.

381. "Illegal move: post" is apparently not handled.  Should it be?

382. The UI for entering Training mode is a bit obscure: you must
first select Load Game, then Training becomes enabled in the upper (!)
part of the Mode menu and you can select it.  You can then select it
again to toggle it off.  This mode is something like Analyze File
(which has a problematic UI too, but somewhat less so); both should
probably use a similar UI style.  I consider disabling the
step-forward button to be overkill, and I think you need to manually
turn off auto-step when loading a game (?).  One user expected it to
work with .epd files that give a position and a recommended move.
That seems reasonable, but doing it would require quite different code
from the current pgn-game training mode.

383. Premove piece drop for bughouse/crazyhouse.

384. Pre-first-move for xboard.  I don't much like the fill-in field
method used in winboard.  Maybe allow a move to be made for white
before the game starts (in both xboard and winboard).  If you get
black, it's cancelled.  Black can already premove after the game
starts, during white's first move think time, so I don't see that a
black pre-first-move is needed.

**387. Have winboard draw opaque details on black pieces too.
Hmm, this should probably be optional, and the detail colors should
be selectable instead of hardwired to the opposite piece color.

**387a. Add "no piece border" option to WinBoard.  See code from
Robert Jurjevic sent 4/9/2001.

391. I have a bug report from Stefan Zipproth about engines sometimes
failing to make their first move in an engine-engine match.  So far I
can't reproduce it.  This might be fixed by the Sleep(500) voodoo in 4.2.4.

394. See about tightening matching for the "request" event.  Right now
it matches on help files a bit too often.  (e.g. FICS "help sr_info")
**Also clarify documentation on what the request event is.

396. xboard's -size defaulting code for bitmaps unfortunately always
picks a size from the built-in list, even if you gave the
-bitmapDirectory option.  It would be more user-friendly to have some
extra code that lists the directory and considers only sizes that
are found there, as the pixmap code does.

397. It would be nice to be able to configure xboard with bitmap
pieces as the default without having to disable xpm support entirely.
This should be a pretty simple mod to configure.in (and xboard.c).

397a. It would be very nice to be able to compile in both the bitmap
and pixmap pieces.  This would allow us to automatically switch to bitmap
pieces in -mono mode, including when -mono mode was automatically selected
because too few colors were available.

398. It would be nice to have the new .xpm pieces in .xim format too,
since I restrained myself from ripping out the .xim support.

399. It would be nice to have a configure option to change the
directory where the default piece set is taken from.  Slightly nicer
than having to rename the desired directory to "bitmaps" or "pixmaps"
as at present.

400. TypeinMove should be grayed in ICS mode, or should raise the
console window, or something.

402. Internationalization.  It probably isn't practical to retrofit
this into the current code base.

****406. "telluser" needs to be made nonmodal in winboard.

409. One user requested a way to put a time delay in the middle of
sending zippyGameEnd commands.  This would (for example) let the
computer do a seek only if its opponent doesn't accept a rematch
within 10 seconds.  Nontrivial because Zippy has to continue to listen
to input during the delay; it can't simply call sleep().  Maybe
ScheduleDelayedEvent is OK, but I think it may already be in use in
this situation, and it only supports one event at a time.

411. Add zippyKibitzThinking and zippyWhisperThinking features?

412. Maybe optimize setting the move list in the case where only the
current move number changes; avoid slow XawListChange.

**413. Add movelist window to WinBoard too.  Wilkin Ng submitted a
patch that I believe includes this; need to integrate and test it.

**415. It was suggested that a few common options that many chess
engines need be promoted to xboard/WinBoard options so that the user
can set them from the GUI in a uniform way.  In particular: hash size,
directory name for endgame tables.

**416. Can we avoid dying when xboard is in 8-bit mode, pixmap pieces
are chosen (by default), and we can't get enough colors?  Ugh.

**419. It was suggested that stat01 be generated/accepted during normal
play with "post" on, not just during analysis mode.  This would need
to be a "feature" command option.

422. Track FICS change to details of how timeseal works; is this
implemented at FICS yet?

423. When locally stepping through an ICS game that is over, it would
be nice to display the historical clock times at each move.

424. DAV at Thu Nov 9, 01:20 CST 2000: any chance on winboard/xboard
of a key press and a move executing draw <move>?  that way you at least
have a chance of claiming a draw in 1 0.

**426. DAV says, in xboard: If you are not on clock and you hover a
piece over a square where your opponent then moves to and then move
the piece away the piece the opp moved or part of it has not been
drawn.  [Duplicate of bug 241?]

429a. Check whether more support is needed for WinBoard to work with
scroll wheel mice in the absence of special mouse drivers that generate
scroll bar events directly.

431. People find Analyze File confusing; they think it should do
Crafty's relatively new Annotate function.  Also, it's somewhat
superfluous now that you can enter Analysis mode and then load the
file, or vice versa.

**436. WinBoard is said to crash if started while WinBoard.debug is
being tail -f'ed.

**441. Can I prevent an undo after new in the odd case where it can
happen now?  See mail from Bob Hyatt.

**448. add notes on non-xboard GUIs from Dieter Buerssner to document?

450. Suggested: an option to let an engine keep pondering while an ICC
game is adjourned.  This seems a bit difficult.

451. Suggested: support SuperMamer messages on FICS.  See
http://www.freechess.org/SuperMamer/parsing.html

452. Suggested: a way to say "prompt for the password" in a login.ini file.
See 510 instead.

**454. Add a way to claim a draw together with making a move, as can
be needed for draw by repetition (creating the 3rd repetition with the
move) and by the 50 move rule (the move is the 50th).  Add to
protocol, and implement using the individual methods on FICS and ICC.
Need to be sure it's really a FICS that has the feature (somehow).

455. Suggested: Add the epdkit commands such as epdpfga to the
protocol, since Crafty and "many" (which?) other engines include the
epdkit.

**456. Bob Hyatt suggests: "feature match=1" which says "send match
requests to the engine and let it decide on who to play next".
I.e., maybe send an abbreviated but fixed format message like this:
match <opponent_name> time inc R/U.  The engine would use "tellics
accept <opponent_name>" to accept.  Add as feature to protover 3.

**457. Standardize on the meaning of scores (e.g. in stat01 responses).
Is positive good for white or good for the engine?  Do certain scores
mean forced (tablebase) draw, or forced mate in N?  This should align
with the EPD spec.  Maybe a feature command should indicate that the
engine matches this part of the spec, but then again, it's not clear
what we can do about it if the engine doesn't give that command, so
maybe there is no point.  See discussion on chess-engines list.

458. Bug: xboard will try to use an engine to play normal chess even
if the engine has given the feature variant command and did not
include "normal" on the list.  Crafty 18.1 inadvertently relies on
this bug, so it probably can't be fixed right away.

**466. Check whether engine sometimes gets extra "quit" and restart
when reuse is off.  See Bob Hyatt message of 3/13/2001 and 3/15/2001,
also mentioned again 6/12/20001.

**468. Need to look at Wilkin Ng's contributions!

**469. Look at Zippy's behavior if the operator observes, follows,
examines, etc.  Some bugs in this area have been fixed, but it's
received very little testing, as Zippy was never meant to be used that
way.  Noted later: Examining in -zp mode definitely has problems.  If
you go forward one move at a time, moves are sent to the engine
correctly.  If you go backward one move, "undo" is not sent to engine
as it needs to be.  Going forward or back by more than one move at a
time needs to be looked at too.

**471. Look at 3/17/2001 message from Laszlo Vecsey about crashes when
exiting on Win ME while data is coming in from the server.

**473. Visual low-time indicator.  See patch in Brian Mays message of
3/27/2001.

**474. Crash reported when sending certain 8-bit characters through
WinBoard (180, 167, others).  I'm almost certain this is a FICS
timeseal issue and nothing to do with WinBoard itself.

**475. Look at Laszlo Vecsey's mousewheel patch of 4/10/2001.

476. For some reason (I guess some GUI supports them), most WinBoard
engines now have a graphical logo, 100x50 pixels in Windows .bmp
format.  It's been requested that WinBoard have a place to show the
logo.

477. Implement the "book engine" idea I proposed in the protover 3
discussions.  Some folks have offered to write them (e.g., Bruce
Morland).

478. Recognize URLs in the WinBoard ics interaction window and make
them work as hyperlinks (firing up your browser).

**479. Possibly use Scott Gasch's 7 May 2001 patch to delay accepting
challenges when ping > pong instead of declining them.  Bug: if you
get more than one challenge, Scott's patch forgets about all but the
last one.  If that guy then withdraws his challenge, the others are
left in limbo, neither accepted nor declined.  I suppose we could
decline challenges when there is one waiting.  However, if we make the
change to optionally pass match requests through to the engine, Bruce
Moreland would like us to queue up challenges and pass them all on.

481. 8 May 2001, Bob Hyatt "matchscore" feature suggestion could go in
protover 3: "matchscore A B C D E says we are in a match, this is game
A of B games.  The current match score is I have won C, drawn D, and
lost E games in this match.  This would give the engine a chance to
adjust the draw score as needed to try to win the match rather than
just trying to win a single game."

**482. Suggestion from Bruce Moreland: if the user goes into ICS
examine mode while -zp is active, and the engine supports analyze,
then put it into analyze mode and let it work on the examined game.  I
guess this could work for observed games too.  Should it be optional
or always done?

483.  It would be nice if the KingShine 3D board could be integrated
as an alternative xboard GUI rendering.

**484.  Add -feature1 and -feature2 options to pretend the engine sent
us those feature commands.  Useful kludge for certain buggy engines.

485. Add "reset" to protover 3.  (Clear the hash tables and other such
info; used to put the engine into a known state before running a
test/benchmark position.)

486. Other protover 3 features listed in my 6/21/2001 message to
chess-engines list.  Write a full protover 3 draft for comment.

487. Adjudicate non-ICS games as a draw when there is insufficient
mating material on both sides, especially engine/engine games.  Well,
maybe.  I argued against this in a 6/26/2001 message to chess-engines.

487a. Probably also adjudicate when we detect checkmate or stalemate,
before bothering to notice whether the engine detected this.

487b. Note: Do not adjudicate 50 move rule or 3x repetition since those
must be claimed by a player -- at least not by default.  It would be
OK to have a flag to do this someday when we are smart enough to
notice it.  Would definitely be good to be smart enough to notice an
incorrect draw claim by an engine.

487c. Another request: allow the operator to adjudicate engine/engine games.

488. Option to suppress tags popup on game load?  This has been
requested a few times, and I received one partial implementation (not
enough to be useful).  Needs to be on the options menu, etc.  Note
conflict with 298 above.

489. Maybe have Zippy use xtell for tells to avoid redefining "." if
the operator is also doing tells.  Do all ICSes support xtell, though?

490. Bruce Moreland request: a way to turn Zippy auto-accept on and
off dynamically.

491. Bruce Moreland request: a defined way to turn on/off PV (etc.)
kibitzing from the engine dynamically.  I had thought it would be
better to make the GUI able to relay thinking output as kibitzing on
its own (and be able to turn this on/off dynamically), but Bruce
points out that what engine authors want to send as kibitzing output
usually includes more than the PV thinking output.

492.  One user reports that GNU Chess 5 crashes if you start a game,
play far enough to get GNU Chess out of book, select Reset, and play
e3 in the new game.  This is probably a GNU Chess 5.00 bug, unrelated
to WinBoard.  Can't reproduce on Linux; didn't try yet on Windows.
Need to see if 5.02 fixes it.

493.  DAV suggests stripping off first arguments that are obviously
not the name of the engine when trying to parse out the engine name
from its command line -- things like nice, nohup, sh, csh, bash, etc.
Ugh, but I suppose it would be helpful sometimes.

494.  Internationalization.  A couple of people have done (or told me
they were doing) partial conversions of WinBoard to German or Spanish
by manually translating the messages.  I think it would be much better
(but a big job) to use GNU gettext.  I haven't looked into the details
of that at all.

495. JamesBaud points out that FEN is not sufficient to correctly
represent a crazyhouse position (or bughouse, for that matter),
because it does not distinguish promoted pawns that will revert when
captured from real pieces.  ICS style 12 also does not give us this
information.  I really don't know what I could do about this -- take
the lead in proposing an extension to FEN and to style 12 with new
piece letters, I suppose.  I don't really have time or motivation for
that.  If you always use PGN, not FEN, to save Crazyhouse, that works
around the problem.

**496. DAV sent some code to save a screen shot in xboard.  Look at
merging this in.

**497. Igor Eged reports: I make a move on opponents time using
premove. Right in the time I am holding another piece in case of
unexpected check that I can have other possibility. But then the piece
hangs in the void and its invalid move, what means often loss in 1 0
lightning.

498. It would be nice for Zippy to be able to play ICC wild 20 and 21
(the types where loadgame is allowed).  Presumably there would have to
be an option to either send the loadgame command with a specified
position, or to deal with an opponent sending it.  I'm not sure how
this should work exactly, or how to prevent opponents from cheating in
various ways.

499. It would be nice for Zippy to be able to switch amongst several
different engines depending on which variant type is being played.

500. It would be nice if Zippy could have an option to accept
takebacks.  Hmmm, also, the operator might want to manually offer a
takeback; it would be good if that worked.

501. People would like to be able to add more bot functionality to
Zippy without C programming.  I don't have any ideas on how to do that.

502. One user requests the ability to have a game list file open for
more than one PGN file at a time.

503. We don't do protover 2 feature negotiation properly when
restarting an engine due to -xreuse mode.  The timeout and done=0/1
features don't work on the restart; instead we basically assume that
all the features will be the same as last time and that the engine
will be ready to accept commands immediately.  This probably doesn't
cause a lot of problems, but if you try to replace the engine with one
that sets different features, the changes might not be noticed before
the first move, and the defaults will be the values from the old
engine, not the documented defaults.  Also, if the engine takes time
to initialize and wants us to wait to send commands until it says
done=1, we fail to wait.  However, we do send commands in the right
order and use ping, so most engines should work fine.

505. On Windows we use rand() for random numbers, which ranges only up
to 0x7fff.  That means that on Windows, only zippy.lines sayings that
start in the first 32767 bytes of the file can ever be used.  It looks
like the only fix is to have our own 32-bit implementation of
random().  Sigh.

506. One user wants a board size even smaller than Tiny.

507. Suggested: have the cursor change to a gripping hand while moving
pieces.  Currently in WinBoard it's always an arrow, while in xboard
it's always a hand with pointing finger while over the board and an
arrow elsewhere.

508. It would be nice to make -xclock work with -ics, just for
orthogonality, though it's not terribly useful.

509. It would be nice to make -clock work with -st.  Perhaps each
player's clock should start with the specified time on each move and
count down until he moves.

**510. A FICS service rep tells me that many users expect an autologin
feature in winboard (other than the non-user-friendly login.ini file).
Seems easy enough to add such a thing.

511. It's been reported that WinBoard has a problem with command line
parsing when built with Cygwin: If a Cygwin-compiled WinBoard is in
C:\Program Files\WinBoard\WinBoard.exe, it prints an error message on
startup about Files\WinBoard\WinBoard.exe being an invalid parameter.
This sounds like a Cygwin bug (passing an incorrect parameter to
WinMain), though maybe there is some workaround.

Before each release:
- make sure changes made in winboard are propagated to xboard
- make sure changes made in xboard are propagated to winboard
- run zippy with new version as a shakedown
- be sure gnu5 binary is up to date in winboard, and gnu5 patch (if needed)
  is included in both xboard and winboard kits 
- recheck cygwin compiling winboard
- make sure ChangeLog is complete
- test changes

*** up to date with mail received through 1 Feb 2001, except
for "protover 3" discussion ***