NAME

Chess - GNU Chess

SYNOPSIS

gnuchess [OPTION]...

DESCRIPTION

GNU Chess 6.2.11 Copyright © 2025 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Play the game of chess.

OPTIONS

-h, --help

display this help and exit

-v, --version

display version information and exit

-q, --quiet

make the program silent on startup

--silent

same as -q

-x, --xboard

start in engine mode

-p, --post

start up showing thinking

-e, --easy

disable thinking in opponents time

-m, --manual

enable manual mode

-u, --uci

enable UCI protocol (externally behave as UCI engine)

-M size, --memory=size

specify memory usage in MB for hashtable

-a filename, --addbook=filename

compile book.bin from pgn book 'filename'

-g, --graphic

enable graphic mode

Options xboard and post are accepted without leading dashes for backward compatibility.

Moves are accepted either in standard algebraic notation (SAN) or in coordinate algebraic notation.

The file 'gnuchess.ini' allows setting config options if --uci is not used. See 'info gnuchess' for details. The file is looked for in three locations according to this precedence: current directory, the directory pointed to by environment variable GNUCHESS_PKGDATADIR, or the package data directory stated at configure time.

REPORTING BUGS

Report bugs to <bug-gnu-chess@gnu.org>.

SEE ALSO

The full documentation for Chess is maintained as a Texinfo manual. If the info and Chess programs are properly installed at your site, the command

info gnuchess

should give you access to the complete manual.