PsycoChess

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PsycoChess, (Psyco Chess)
an open source chess engine by Massimo Zizi, written in Java and released in June 2004 under the GPL. PsycoChess applies rotated bitboards, and a 4 ply fixed depth alpha-beta without iterative deepening and quiescence. A transposition table is used a the root only. Instead of negamax or indirect recursion via max and min-routines, a boolean parameter is passed to the direct recursive search whether it is a max or min player ¹. The rudimentary Evaluation considers material, and piece-square tables and some pawn structure terms ².

See also

• Psycho
• Psycho-Chess

Forum Posts

• Java xboard/winboard chess engine psychochess by Dann Corbit, Winboard Forum, July 14, 2004
• Does somebody have a win compatible compile of PsycoChess by Dr. Axel Schumacher, Winboard Forum, November 25, 2004
• New engines: PsycoChess and Tarrasch Toy Engine by Ron Murawski, Winboard Forum, April 25, 2009

External Links

Chess Program

• Psyco Chess - A GNU Java Chess Engine download | SourceForge.net (PsycoChess 1.38)

Misc

• Psyco - Wikipedia.it

Psycho (1960 film) from Wikipedia

• Psyco from Wikipedia (Python)
• Achim Zepezauer - Psycow, YouTube Video

Watch on YouTube

References