BishopBerkeley: Originally designed as "a bughouse & crazyhouse playing program" freeware engine Sjeng's commercial enhancement, Deep Sjeng, tied Shredder (Computer) for 3rd place in the 13th World Computer Chess Championship at Reykjavik University in Iceland (August 2005). The basic Sjeng Chess engine remains available for free download at the developer's website:
Commercial enhancement Deep Sjeng is available here:
From the developer's website:
1. What is Sjeng ?
Sjeng was an attempt to create a bughouse & crazyhouse playing program that can attain a level comparable to what the best human players are capable of. Newer versions of Sjeng also play standard, suicide, giveaway and losers chess.
Deep Sjeng is a professional chess playing & analysis program, complete with interface, opening book, chess server access, personalities, multiprocessor and UCI support, and more. Its playing strength is over 2750 ELO on fast hardware....
The latest WBEC Ridderkerk rating list gives Deep Sjeng a 2690 rating among UCI Chess engines, and the latest Swedish Rating List gives Deep Sjeng a 2671 rating among all computer Chess engines:
Deep Sjeng's impressive results at the World Computer Chess Championship may be seen here:
Indeed, Deep Sjeng only lost games to the stunning new World Computer Chess Champion Zappa (Computer) , and the wonderfully impressive 2nd place winner "Fruit" (the favorite of vegetarians worldwide). It drew its games with former World Computer Chess Champions Shredder (Computer) and Junior (Computer) (really Deep Junior (Computer) , I believe).
(: ♗ Bishop Berkeley ♗ :)