This article is from the GNU Chess and XBoard FAQ, by Tim Mann firstname.lastname@example.org with numerous contributions by others.
GNU Chess is a free chess-playing program developed as part of the GNU
project of the Free Software Foundation (FSF).
GNU Chess is a communal chess program. Contributors donate their time
and effort in order to make it a stronger, better, sleeker program.
Contributions take many forms: interfaces to high-resolution displays,
opening book treatises, speedups of the underlying algorithms, additions
of extra heuristics. These contributions are then distributed to the
large user-base so that all may enjoy the fruits of our labor.
GNU Chess is intended to run under Unix or Unix-compatible systems. It
is written in C and should be portable to other systems.
For a test drive, try WebChess, a World Wide Web interface to GNU Chess
provided by DJ Delorie. The URL is