This is gnubg.info, produced by makeinfo version 4.0 from gnubg.texi.

INFO-DIR-SECTION Games
START-INFO-DIR-ENTRY
* gnubg: (gnubg).               GNU Backgammon.
END-INFO-DIR-ENTRY

   This file documents GNU Backgammon, a program for playing and
analysing backgammon games and matches.

   Copyright (C) 1999, 2000, 2001 Gary Wong.

   Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1; with
no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.  A
copy of the license is included in the section entitled "GNU Free
Documentation License".


File: gnubg.info,  Node: Cube,  Next: Recording,  Prev: Matches and Sessions,  Up: Playing

The Doubling Cube
=================

`double'
`redouble'
`beaver'
`take'
`accept'
`drop'
`pass'
`reject'
`set cube centre'
`set cube owner PLAYER'
`set cube use'
`set cube value POINTS'
     FIXME


File: gnubg.info,  Node: Recording,  Prev: Cube,  Up: Playing

Saving Games and Matches
========================

`save game FILE'
`save match FILE'
`load game FILE'
`load match FILE'
     FIXME


File: gnubg.info,  Node: GTK,  Next: Analysis,  Prev: Playing,  Up: Top

The Graphical Interface to gnubg
********************************

`set colours'
`set delay'
`show delay'
     FIXME


File: gnubg.info,  Node: Analysis,  Next: Databases,  Prev: GTK,  Up: Top

Using gnubg to Analyse Positions
********************************

`eval [ID|=NUMBER]'
`rollout [ID|=NUMBER ...]'
`set evaluation'
`set rollout'
`set cache SIZE'
`show cache'
`show gammonprice'
`show marketwindow'
`show matchequitytable'
`analysis'
     FIXME


File: gnubg.info,  Node: Databases,  Next: Training,  Prev: Analysis,  Up: Top

Position Databases
******************

`database dump'
`database export'
`export database'
`database generate'
`database import'
`import database'
`database rollout'
     FIXME

`database train'
`train database'
     FIXME pointer only


File: gnubg.info,  Node: Training,  Next: Guile,  Prev: Databases,  Up: Top

Modifying gnubg's Neural Nets
*****************************

`new weights'

`save weights FILE'
`load weights FILE'
`database train'
`train database'
`train td'
     FIXME

Alpha
      1 +++--+-++-+--+++-+--+-++-+--+++-+---+++-+--+-+--+--+++-+--+-+--+--+++
        ***************+       +      +       +Alpha 0.5, anneal 0.5+****** +
        +             ***********              Alpha 0.1, anneal 0.1 ###### +
        +                        ****                                       +
        |                            ****                                   |
    0.1 ################################****                               ++
        +                                  #***############                 +
        +                                      ****        ################ +
        +                                          ***                     ##
   0.01 ++                                           ****                  ++
        +                                                ****               +
        +                                                   ***             +
        +                                                      ****         +
        +                                                         ***       +
  0.001 ++                                                           ****  ++
        +                                                                ***+
        +                                                                   *
        +                                                                   +
        +       +      +       +      +       +      +       +      +       +
 0.0001 +++--+-++-+--+++-+--+-++-+--+++-+---+++-+--+-+--+--+++-+--+-+--+--+++
        1      10     100    1000   10000  100000  1e+06   1e+07  1e+08   1e+09
                                      Positions


File: gnubg.info,  Node: Guile,  Next: Frequently Asked Questions,  Prev: Training,  Up: Top

Extending gnubg
***************

`:'
     FIXME


File: gnubg.info,  Node: Frequently Asked Questions,  Next: GNU Free Documentation License,  Prev: Guile,  Up: Top

Frequently Asked Questions
**************************

* Menu:

* Where can I get GNU Backgammon?::
* How do I play a game?::
* gnubg.bd errors::
* gnubg.weights errors::
* Black and white board window::


File: gnubg.info,  Node: Where can I get GNU Backgammon?,  Next: How do I play a game?,  Up: Frequently Asked Questions

Where can I get GNU Backgammon?
===============================

   Pre-release snapshots of GNU Backgammon are periodically made
available for FTP at `ftp://alpha.gnu.org/gnu/gnubg/'.

   If you want to experiment with the very latest code, the development
sources are kept in a CVS repository at
`http://subversions.gnu.org/cgi-bin/cvsweb/gnubg/'; see the gnubg web
page at `http://www.gnu.org/software/gnubg/gnubg.html' for instructions
on checking out sources from the repository.  Daily snapshots of the
main branch of the repository are automatically placed in the
`snapshots' directory of the FTP area above, if you wish to retrieve
this experimental code via FTP.


File: gnubg.info,  Node: How do I play a game?,  Next: gnubg.bd errors,  Prev: Where can I get GNU Backgammon?,  Up: Frequently Asked Questions

How do I play a game?
=====================

   Once you are running gnubg, enter `new game' at the `(gnubg)' prompt
to start a game against the computer opponent.  You should now see a
board (if a window system is available, gnubg will use a graphical
board window; otherwise, it will display an ASCII board on your
terminal).  If gnubg won the opening roll, it will have moved; you can
now type `roll' (or click on the dice below the board window) to roll
the dice yourself.  In either case, it will now be your move; you
should enter the moves for each chequer as pairs of numbers.  For
instance, if you have rolled 3 and 1, you could type `8 5 6 5' to move
one chequer from the 8 point to the 5 point and another from the 6
point to the 5 point.  Use `bar' to move from the bar, and `off' to
bear off.  If you are using the board window, you can also drag
chequers around the board with mouse button 1.  Click on the dice when
you have finished.


File: gnubg.info,  Node: gnubg.bd errors,  Next: gnubg.weights errors,  Prev: How do I play a game?,  Up: Frequently Asked Questions

I only see `gnubg.bd: No such file or directory'.  What's wrong?
================================================================

   The file `gnubg.bd' is the bearoff database that gnubg uses to
evaluate endgame positions.  gnubg will look for it first in the current
directory and then in the installed directory (`/usr/local/share/gnubg/'
by default).

   The gnubg distribution is set up to create `gnubg.bd' by itself
during compilation, but it can be a slow process (taking half an hour
or more, depending on the speed of your computer).  If you would rather
not wait to generate the database yourself, you can obtain a copy via
FTP from `ftp://alpha.gnu.org/gnu/gnubg/gnubg.bd.gz'.

   FIXME this is out of date; gnubg can cope without gnubg.bd if it has
to.


File: gnubg.info,  Node: gnubg.weights errors,  Next: Black and white board window,  Prev: gnubg.bd errors,  Up: Frequently Asked Questions

Now I get `gnubg.weights: No such file or directory'.  What's that?
===================================================================

   The file `gnubg.weights' contains the trained neural net weights for
most of gnubg's position evaluators.  Like `gnubg.bd', it should be
kept in either the current directory or the installed directory.

   A binary variant of the weights file named `gnubg.wd' can also be
used (this version can be loaded more quickly, but is not portable
between different computer architectures).  It will automatically be
built during the compilation process, and used in preference to
`gnubg.weights' if found.

   You should be able to obtain a copy of the weights from wherever you
found the gnubg distribution.  If you wish to start gnubg without any
weights (and train your own), you can use the `--no-weights' option
(see *note Invoking gnubg::).


File: gnubg.info,  Node: Black and white board window,  Prev: gnubg.weights errors,  Up: Frequently Asked Questions

The board window is shown in black and white and looks awful!  What's wrong?
============================================================================

   If you see this problem, your X server is probably using a
"PseudoColor" visual, and is dynamically allocating colours to clients
from a limited colourmap.  On these types of displays, gnubg tries to
be a well-behaved client by using colours from the default standard
colourmap.  This will allow it to share colours with other clients that
use the same scheme, which will help them all to use as many colours as
possible without exhausting the colourmap.

   Unfortunately, not all X clients use standard colourmaps.  If other
clients have been run before gnubg and allocated most of the colours,
then there may not be enough left for gnubg to allocate a standard
colourmap.  If this happens, it will just take what it can get (which
in the worst case might be black and white only).  You can try to avoid
this problem by running gnubg before other colour-hungry clients, or by
using the `xstdcmap' utility to install the default standard colourmap
early in your session while colours are still available.  Depending on
your hardware, you may be able to configure your display to allow more
colours, or use a "DirectColor" or "TrueColor" visual which should
resolve the problem.

   Of course, if your X server can only display black and white (not
even shades of grey), then there's not much you can do!


File: gnubg.info,  Node: GNU Free Documentation License,  Next: Command Index,  Prev: Frequently Asked Questions,  Up: Top

GNU Free Documentation License
******************************

                        Version 1.1, March 2000

     Copyright (C) 2000  Free Software Foundation, Inc.
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File: gnubg.info,  Node: Command Index,  Next: Concept Index,  Prev: GNU Free Documentation License,  Up: Top

Command Index
*************

* Menu:

* !:                                     Shell Commands.
* ::                                     Guile.
* ?:                                     Basic Commands.
* accept <1>:                            Cube.
* accept:                                The Game.
* agree:                                 The Game.
* analysis:                              Analysis.
* beaver:                                Cube.
* database dump:                         Databases.
* database export:                       Databases.
* database generate:                     Databases.
* database import:                       Databases.
* database rollout:                      Databases.
* database train <1>:                    Training.
* database train:                        Databases.
* decline:                               The Game.
* double:                                Cube.
* drop:                                  Cube.
* eval:                                  Analysis.
* exit:                                  Leaving gnubg.
* export database:                       Databases.
* external:                              Computer Player.
* help:                                  Basic Commands.
* hint:                                  The Game.
* import database:                       Databases.
* load game:                             Recording.
* load match:                            Recording.
* load weights:                          Training.
* move:                                  The Game.
* new game:                              The Game.
* new match:                             Matches and Sessions.
* new session:                           Matches and Sessions.
* new weights:                           Training.
* pass:                                  Cube.
* play:                                  Computer Player.
* quit:                                  Leaving gnubg.
* redouble:                              Cube.
* reject <1>:                            Cube.
* reject:                                The Game.
* resign:                                The Game.
* roll:                                  Dice.
* rollout:                               Analysis.
* save game:                             Recording.
* save match:                            Recording.
* save weights:                          Training.
* set automatic bearoff:                 The Game.
* set automatic crawford:                Matches and Sessions.
* set automatic doubles:                 Matches and Sessions.
* set automatic game:                    Matches and Sessions.
* set automatic move:                    The Game.
* set automatic roll:                    Dice.
* set board:                             The Game.
* set cache:                             Analysis.
* set colours:                           GTK.
* set crawford:                          Matches and Sessions.
* set cube centre:                       Cube.
* set cube owner:                        Cube.
* set cube use:                          Cube.
* set cube value:                        Cube.
* set delay:                             GTK.
* set dice:                              Dice.
* set display:                           The Game.
* set evaluation:                        Analysis.
* set jacoby:                            Matches and Sessions.
* set player evaluation:                 Computer Player.
* set player external:                   Computer Player.
* set player gnubg:                      Computer Player.
* set player human:                      The Game.
* set player name:                       The Game.
* set player pubeval:                    Computer Player.
* set postcrawford:                      Matches and Sessions.
* set rng:                               Dice.
* set rollout:                           Analysis.
* set score:                             Matches and Sessions.
* set seed:                              Dice.
* set turn:                              The Game.
* show board:                            The Game.
* show cache:                            Analysis.
* show copying:                          Basic Commands.
* show crawford:                         Matches and Sessions.
* show delay:                            GTK.
* show gammonprice:                      Analysis.
* show jacoby:                           Matches and Sessions.
* show marketwindow:                     Analysis.
* show matchequitytable:                 Analysis.
* show pipcount:                         The Game.
* show player:                           The Game.
* show postcrawford:                     Matches and Sessions.
* show rng:                              Dice.
* show score:                            Matches and Sessions.
* show seed:                             Dice.
* show turn:                             The Game.
* show warranty:                         Basic Commands.
* take:                                  Cube.
* train database:                        Training.
* train td:                              Training.


File: gnubg.info,  Node: Concept Index,  Prev: Command Index,  Up: Top

Index
*****

* Menu:

* analysis of positions:                 Analysis.
* automatic doubles:                     Rules of Backgammon.
* backgammon:                            How to Play Backgammon.
* backgammon rules:                      Rules of Backgammon.
* backgammons:                           Rules of Backgammon.
* bar:                                   Rules of Backgammon.
* basic commands:                        Basic Commands.
* bearing off:                           Rules of Backgammon.
* beavers:                               Rules of Backgammon.
* blot:                                  Rules of Backgammon.
* board setup:                           Rules of Backgammon.
* cancelling commands:                   Leaving gnubg.
* command line options:                  Invoking gnubg.
* commands, basic:                       Basic Commands.
* commands, playing:                     Playing.
* computer player:                       Computer Player.
* Crawford rule:                         Match Play.
* cube owner:                            Rules of Backgammon.
* cube, doubling:                        Cube.
* databases:                             Databases.
* dice:                                  Dice.
* doubles, automatic:                    Rules of Backgammon.
* doubling cube:                         Rules of Backgammon.
* doubling, commands:                    Cube.
* doubling, rules:                       Rules of Backgammon.
* enter:                                 Rules of Backgammon.
* entering:                              Rules of Backgammon.
* errors starting gnubg <1>:             gnubg.weights errors.
* errors starting gnubg:                 gnubg.bd errors.
* escapes, shell:                        Shell Commands.
* exiting gnubg:                         Leaving gnubg.
* extending gnubg:                       Guile.
* FAQ:                                   Frequently Asked Questions.
* FIBS:                                  Introduction.
* frequently asked questions:            Frequently Asked Questions.
* game commands:                         The Game.
* games, saving:                         Recording.
* gammons:                               Rules of Backgammon.
* gnubg, making moves:                   Computer Player.
* gnubg.bd:                              gnubg.bd errors.
* gnubg.weights:                         gnubg.weights errors.
* graphical interface:                   GTK.
* GTK+:                                  GTK.
* Guile:                                 Guile.
* hitting:                               Rules of Backgammon.
* home board:                            Rules of Backgammon.
* interrupting gnubg:                    Leaving gnubg.
* introduction:                          Introduction.
* invoking gnubg:                        Invoking gnubg.
* irregularities:                        Rules of Backgammon.
* Jacoby rule:                           Rules of Backgammon.
* leaving gnubg:                         Leaving gnubg.
* match rules:                           Match Play.
* matches:                               Matches and Sessions.
* matches, saving:                       Recording.
* moving chequers, commands:             How do I play a game?.
* moving chequers, rules:                Rules of Backgammon.
* neural nets, training:                 Training.
* object of the game:                    Rules of Backgammon.
* obtaining gnubg:                       Where can I get GNU Backgammon?.
* open point:                            Rules of Backgammon.
* optional rules:                        Rules of Backgammon.
* outer board:                           Rules of Backgammon.
* pips:                                  Rules of Backgammon.
* playing a game:                        How do I play a game?.
* playing commands:                      Playing.
* points:                                Rules of Backgammon.
* position analysis:                     Analysis.
* position databases:                    Databases.
* quitting gnubg:                        Leaving gnubg.
* recording matches:                     Recording.
* rolls, dice:                           Dice.
* rules, optional:                       Rules of Backgammon.
* running gnubg:                         Invoking gnubg.
* sample game:                           Sample Game.
* saving matches:                        Recording.
* Scheme:                                Guile.
* sessions:                              Matches and Sessions.
* shell commands:                        Shell Commands.
* starting gnubg:                        Invoking gnubg.
* training:                              Training.


