bearoffdump(6) [debian man page]

BEAROFFDUMP(6)							   Games Manual 						    BEAROFFDUMP(6)

NAME

       bearoffdump - dump a position from the GNU Backgammon bearoff database

SYNOPSIS

       bearoffdump file id

DESCRIPTION

       bearoffdump takes the path to a GNU Backgammon bearoff database and a position number and dumps the bearoff information for that position.
       It can be called on either the one-sided bearoff database, normally /usr/share/gnubg/gnubg_os0.bd; or the two-sided bearoff database, nor-
       mally /usr/share/gnubg/gnubg_ts0.bd.  The output from the former includes the probabilities of bearing off all checkers in varying numbers
       of moves.  The latter only gives the probability of winning and doubling cube equity.

       The id is difficult to derive if you don't know GNU Backgammon internals.  Each possible combinatorial position of checkers and points is
       assigned a position number, id divided by that number is the player position, and id modulo that number is the opponent position.  The num-
       ber of points and checkers is set when building the bearoff database and are shown by bearoffdump when run with any id.

SEE ALSO

       gnubg(6)

AUTHORS

       Joseph Heled, Oystein Johansen, Jorn Thyssen, and Gary Wong, with the assistance of many others <bug-gnubg@gnu.org>.

       This manual page was written by Russ Allbery <rra@debian.org>, for the Debian GNU/Linux system (but may be used by others).  It may be
       redistributed and/or modified under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation
       (the same license as GNU Backgammon).

								    2006-01-14							    BEAROFFDUMP(6)

MAKEHYPER(6)							   Games Manual 						      MAKEHYPER(6)

NAME

       makehyper - generate a GNU Backgammon Hypergammon position database

SYNOPSIS

       makehyper [-nvh] -f filename [-r filename] [-c chequers] [-t threshold]

DESCRIPTION

       Hypergammon is a variation of backgammon with a much reduced number of chequers (usually three).  It's possible to fully analyze this sim-
       plified game and generate a database of position evaluations in order to play perfectly.  makehyper generates such a position evaluation
       database.

       Since many of the positions are in contact, it's not possible to generate the database in one pass; instead, makehyper iterates until the
       position evaluation converges.  The convergence threshold can be changed with the -t option.

OPTIONS

       -f filename, --outfile filename
	      Write the hypergammon database to filename.  This option must be given.

       -r filename, --restart filename
	      Restart calculation of the database from the given file, which should be a checkpoint from an earlier run.

       -c chequers, --chequers chequers
	      Set the number of chequers in the game.  The default is 3, for normal 3-chequer hypergammon.

       -n, --no-checkpoint
	      Do not write a checkpoint file after each iteration.

       -t threshold, --threshold threshold
	      Set the convergence threshold.  The default is 1e-5.

       -v, --version
	      Show version information and exit.

       -h, --help
	      Display usage and exit.

SEE ALSO

       gnubg(6)

AUTHORS

       Joseph Heled, Oystein Johansen, Jorn Thyssen, and Gary Wong, with the assistance of many others <bug-gnubg@gnu.org>.

       This manual page was written by Russ Allbery <rra@debian.org>, for the Debian GNU/Linux system (but may be used by others).  It may be
       redistributed and/or modified under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation
       (the same license as GNU Backgammon).

								    2006-01-15							      MAKEHYPER(6)