makebearoff - generate a GNU Backgammon bearoff database

       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).

                                                   2024-02-27                                     MAKEBEAROFF(6)

makebearoff  generates  GNU  Backgammon bearoff databases, which are used to improve play in the endgame.
       It can generate either two-sided (exact) databases that tell precisely the chance of winning or one-sided
       (approximate) databases that provide a variety of probabilities looking at each side independently.

       Bearoff databases can get quite large and can take a significant amount of time  to  generate  for  large
       numbers of chequers and/or points.

       To generate a two-sided database for up to eight chequers on six points:

           makebearoff -t 6x8 -f gnubg_ts.bd

       Note  that this database is 72MB in size.  To generate a one-sided database for up to fifteen chequers on
       ten points:

           makebearoff -o 10 -f gnubg_os.bd

       Note that this database is 118MB in size.

       makebearoff - generate a GNU Backgammon bearoff database

-ffilename, --outfilefilename
              Write the bearoff database to filename.  This option must be given.

       -tPxC, --two-sidedPxC
              Generate a two-sided bearoff database for P points and C chequers for each player.  Be warned that
              the size of the database grows rapidly with larger numbers of points and chequers.

       -oP, --one-sidedP
              Generate  a  one-sided  bearoff  database  for  P  points.  One-sided bearoff databases are always
              generated for up to fifteen chequers.

       -sN, --xhash-sizeN
              Use a memory cache of size N while building the database.   If  the  cache  is  smaller  than  the
              database size, database generation will be slower due to disk writes.

       -Ofilename, --old-bearofffilename
              Reuse  an  already generated bearoff database.  Any needed data already in this database will just
              be copied without regenerating it.

       -H, --no-header
              Do not write the normal bearoff database header.

       -C, --no-cubeful
              Do not calculate cubeful equities for two-sided databases.

       -c, --no-compress
              Do not compress one-sided databases.

       -g, --no-gammons
              Do not include gammon distributions in one-sided databases.

       -n, --normal-dist
              Rather than storing exact probabilities, approximate probabilities in a one-sided database with  a
              normal distribution.

       -h, --help
              Display usage and exit.

gnubg(6), bearoffdump(6)

makebearoff [-HCcgnh] -ffilename [-tPxC] [-oP] [-scache-size] [-Ofilename]