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hoichess(6)                          Games                         hoichess(6)

NAME
       hoichess - xboard compatible chess engine

       hoixiangqi - xiangqi engine

SYNOPSIS
       hoichess [options]

       hoixiangqi [options]

DESCRIPTION
       hoichess is a chess playing program. It implements major parts of the
       xboard/winboard chess engine protocol.

       hoichess uses many of the standard techniques found in modern chess
       programs, like rotated bitboards, principal variation search,
       quiescence search, transposition table and iterative deepening.

       See xboard(6) for instructions about how to use hoichess through
       xboard. To start up quickly, you just need the command: xboard -fcp
       hoichess.

       hoixiangqi is a xiangqi ("Chinese chess") playing program. Recent
       versions of xboard also support xiangqi: xboard -fcp hoixiangqi.

       hoichess and hoixiangqi are built from the same code base, so nearly
       all commands and options, as well as the text based user interface, are
       the same for both programs.

       If run hoichess or hoixiangqi at the command line, the help command
       gives you a brief summary of available commands.

       At program start, a default startup file is read. This file is called
       hoichess.rc or hoixiangqi.rc, respectively. It is searched for in the
       following directories, in order: current directory, $HOME/.hoichess,
       $USERPROFILE/.hoichess (only on Windows), DATADIR.  Only the first
       found file is read.  The DATADIR is installation dependent, commonly
       /usr/share/games/hoichess.

OPTIONS
       -h, --help
               Display usage information.

       -V, --version
               Display version information.

       -v, --verbose[=n]
               Increase verbosity. Multiple -v options may be given.
               --verbose=n sets verbosity level n.

       -d, --debug[=n]
               Increase debug level. Multiple -d options may be given.
               --debug=n sets debug level n.

       -x, --xboard[=arg]
               Start in xboard compatible mode. This turns off the input
               prompt and alters the output format to meet the requirements of
               the xboard protocol. Normally, this option should not be
               necessary because hoichess automatically detects when it is
               started under xboard.

               The optional argument can be one of:

               off Force non-xboard mode.

               on  Force xboard mode.

       --source filename
               Before accepting input from stdin, first read commands (and
               probably moves) from filename. Can be given multiple times.

       --initcmd command
               Execute command at startup. The command is executed before
               reading script files given by the --source option. Can be given
               multiple times.

       --norc  Do not read default startup file hoichess.rc or hoixiangqi.rc.

       --color arg
               Control usage of ANSI color control sequences, e.g. when
               displaying the chess board.

               arg can be one of:

               off Never use ANSI color sequences.

               on  Always use ANSI color sequences.

               auto
                   Automatically use ANSI color sequences when stdout is a
                   terminal.

               On Unix platforms, the default is auto. On Windows platforms,
               the default is off, because the Windows terminal is normally
               not ANSI capable.

SEE ALSO
       http://www.hoicher.de/hoichess

       xboard(6)

AUTHOR
       hoichess was written by Holger Ruckdeschel <holger@hoicher.de>.

       This manual page was generated with pod2man(1).

hoichess-0.22.0                   2023-01-22                       hoichess(6)

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