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'''Quark''',<br/>
a [[Chess Engine Communication Protocol]] compatible chess engine by [[Thomas Mayer]], written in [[Cpp|C++]]. Beside using [[Alpha-Beta|alpha-beta]], Quark used to improve about 100 Elo each in implementing a [[Transposition Table|transposition table]], [[Null Move Pruning|null move pruning]] and an advanced [[Evaluation|evaluation]] along with various speed improvements <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=4441&start=5 Re: Best feature?] by [[Thomas Mayer]], [[Computer Chess Forums|Winboard Forum]], March 02, 2006</ref>.
Over the board, Quark played the [[WCCC 2003|11th World Computer Chess Championship]] in Graz 2003 <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=120 Quark's ICGA Tournaments]</ref>,
as well as various [[IPCCC|IPCCCs]] in Paderborn, [[Dutch Open Computer Chess Championship]], [[International CSVN Tournament]] <ref>[http://www.quarkchess.de/csvn2001/body_index.html 1st CSVN-Tournament 2001]</ref> in Leiden and the [[BELCT 2001]] <ref>[http://www.quarkchess.de/belct/ BELCT 2001 Berlin is worth a trip!]</ref> in Berlin.
=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=159328 Quark v1.22] by [[Thomas Mayer]], [[CCC]], March 19, 2001
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=33797 Quark and Leiden] by [[Stefan Knappe]], [[Computer Chess Forums|Winboard Forum]], May 18, 2001 » [[ICT 2001]]* [https://www.stmintz.com/ccc/index.php?id=170671 Re: Leiden: Tao-Quark 1-0 stunning opening] by [[Theo van der Storm]], [[CCC]], May 20, 2001 » [[ICT 2001]], [[Tao]]
* [https://www.stmintz.com/ccc/index.php?id=171133 The Game: Chessmaster - Quark] by [[Dann Corbit]], [[CCC]], May 22, 2001 » [[Chessmaster]]
* [https://www.stmintz.com/ccc/index.php?id=188219 Quark v1.50] by [[Thomas Mayer]], [[CCC]], September 10, 2001
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=120 Quark's ICGA Tournaments]
* [http://www.chessgames.com/perl/chessplayer?pid=122438 The chess games of Quark (Computer)] from [http://www.chessgames.com/index.html chessgames.com]
* [http://kirr.homeunix.org/chess/engines/Norbert's%20collection/QuarkChess%20(Compilation)/ ndex Index of /chess/engines/Norbert's collection/QuarkChess (Compilation)] collected by [[Norbert Raimund Leisner]], hosted by [[Kirill Kryukov]]
==Misc==
* [https://en.wikipedia.org/wiki/Quark_%28cheese%29 Quark (cheese) at Wikipedia]
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