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Jazz
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=Description=
Jazz uses [[Bitboards|bitboards]], first [[Rotated Bitboards|rotated bitboards]], later [[Kindergarten Bitboards|Kindergarten bitboards]] to determine [[Sliding Piece Attacks|sliding piece attacks]] <ref>[http://www.eglebbk.dds.nl/program/chess-design.html Chess (Jazz & Sjaak) design]</ref>.
It performs [[Fail-Soft|fail-soft]] [[Alpha-Beta|alpha-beta]] [[Principal Variation Search|principal variation search]] with [[Quiescence Search|quiescence]], [[Null Move Pruning|null move pruning]] and [[Check Extensions|check extensions]]. [[Move Ordering|Move ordering]] considers [[Hash Move|hash move]], [[Mate Killers|mate killers]], and along with a [[Static Exchange Evaluation|SEE]], [[Captures|winning captures]] and [[Promotions|promotions]]. Further, beside the [[Killer Heuristic|killer heuristic]] and [[Countermove Heuristic|countermove heuristic]], a so called '''Combo Move''' heuristics is used to possibly refute opponent moves along similar lines <ref>[http://www.eglebbk.dds.nl/program/chess-search.html Chess (Jazz & Sjaak) search]</ref>.
The implementation of a [[Thread|multithreaded]] [[Parallel Search|parallel search]] along the [[Young Brothers Wait Concept]] with [[Shared Hash Table#Lockless|lock-less hashing]] was elaborated by Evert Glebbeek in a April 2013 [[CCC]] posting <ref>[http://www.talkchess.com/forum/viewtopic.php?t=47820 Implementation of multithreaded search in Jazz] by [[Evert Glebbeek]], [[CCC]], April 20, 2013</ref>. Jazz' [[Evaluation|evaluation]] takes [[Material|material]], [[Piece-Square Tables|piece-square tables]], [[Pawn Structure|pawn structure]], [[Mobility|mobility]], and [[King Safety|king safety]] into account.
=See also=
* [[Sjaak (Glebbeek)|Sjaak]]
* [[Leonidas]]
=Forum Posts=
