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**[[Home]] * [[Engines]] * Witz** || [[image:GiessenTheaterWitz.jpg link="https://commons.wikimedia.org/wiki/File:Gie%C3%9Fen_-_Theater_-_Witz.jpg"]] ||~ || **Witz**, a [[Chess Engine Communication Protocol]] compliant [[Open Source Engines|open source chess engine]] by [[Pradu Kannan]], written in [[C]], and licensed under the [[Free Software Foundation#GPL|GPL]]. The Witz development started in 2004, initially using the [[0x88]] [[Board Representation|board representation]] and in 2005 subsequently rewritten with [[Bitboards|bitboards]]. With was soon superseded by Pradu's second engine, [[Buzz]]. || || Witz <ref>Allegorical representation of the joke (German [[https://de.wikipedia.org/wiki/Witz|Witz]]) at the [[https://en.wikipedia.org/wiki/Theater_Gie%C3%9Fen|Stadttheater Gießen]], [[https://commons.wikimedia.org/wiki/File:Gie%C3%9Fen_-_Theater_-_Witz.jpg|Image]] by [[https://commons.wikimedia.org/wiki/User:SBT|Oliver Abels]], August 13, 2008, [[https://en.wikipedia.org/wiki/Wikimedia_Commons|Wikimedia Commons]]</ref> ||~ ||^ || [[toc]] =Features= <ref>based on [[http://witz.sourceforge.net/|Witz Chess Engine]] - Current Features</ref> ==[[Board Representation]]== * [[Bitboards]] * [[Rotated Bitboards]] ==[[Search]]== * [[Iterative Deepening]] * [[Principal Variation Search]] * [[Alpha-Beta]] * [[Transposition Table]] * [[Quiescence Search]] * [[Interior Node Recognizer]] > [[Repetitions]] > [[Fifty-move Rule]] * [[Pruning|Forward Pruning]] > [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]] > [[Delta Pruning]] * [[Extensions]] > [[Check Extensions]] > [[Recapture Extensions]] > [[Passed Pawn Extensions|Pawn to 7th Rank]] * [[Move Ordering]] > [[History Heuristic]] > [[Killer Heuristic]] > [[Static Exchange Evaluation|SEE]] > Dynamically Pregenerated [[Piece-Square Tables]] ==[[Evaluation]]== * [[Material]] * [[Mobility]] * [[King Safety]] * [[Pawn Structure]] > [[Pawn Hash Table]] > [[Passed Pawn]] > [[Candidate Passed Pawn]] > [[Doubled Pawn]] > [[Isolated Pawn]] > [[Weak Pawns]] ==Misc== * [[Principal variation|Principal Variation Output]] * [[Opening Book]] =See also= * [[Buzz]] * [[Mwitz]] =Forum Posts= * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=1304&p=6051#p6051|Witz Chess Engine]] by [[Pradu Kannan]], [[Computer Chess Forums|Winboard Forum]], January 12, 2005 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=1458&p=6968#p6968|Witz]] by [[Pradu Kannan]], [[Computer Chess Forums|Winboard Forum]], January 30, 2005 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=50025&p=189370#p189370|MWITZ WB engine]] by [[Denis Mendoza|Denis P. Mendoza]], [[Computer Chess Forums|Winboard Forum]], March 10, 2009 =External Links= ==Chess Engine== * [[http://witz.sourceforge.net/|Witz Chess Engine]] * [[https://sourceforge.net/projects/witz/|Witz Chess Engine download]] | [[https://en.wikipedia.org/wiki/SourceForge|SourceForge.net]] * [[https://code.google.com/archive/p/mwitz/|Google Code Archive - mwitz]] ==Misc== * [[https://en.wiktionary.org/wiki/Witz|Witz - Wiktionary]] * [[https://en.wikipedia.org/wiki/Witz|Witz from Wikipedia]] * [[https://de.wikipedia.org/wiki/Witz|Witz Wikipedia.de]] (German) =References= <references /> =What links here?= [[include page="Witz" component="backlinks" limit="60"]] **[[Engines|Up one level]]**