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 analyse this simplified 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.  Default is "hyper<number of
              chequers>.bd", the name expected by GNU Backgammon when using the database.

       -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, Øystein Johansen, Jørn 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).

                                            2015-04-12                               MAKEHYPER(6)