sjeng - 11.2-8+b4 main

Sjeng is a chess program that plays normal chess and many variants
like crazyhouse, bughouse, suicide (aka giveaway or anti-chess) and
losers. It can also play variants which have the same rules as
normal chess, but a different starting position. It uses the
XBoard/WinBoard interface by Tim Mann, so it can be used with
xboard or eboard. It is also capable of playing on internet chess
servers.