Changes

an [[UCI]] compliant [[:Category:Open Source|open source engine]] in the [https://en.wikipedia.org/wiki/Public_domain public domain] by [[Vadim DemichevThinkingALot]] <ref>[https://en.wikipedia.org/wiki/Chess_engine Chess engine from Wikiepdia]</ref>, inspired by ideas and code from other open source engines, notably from [[IvanHoe]] of the [[Ippolit]] family of programs, and from [[Strelka]], whose authors are suspected of [https://en.wikipedia.org/wiki/Reverse_engineering reverse engineering] [[Rybka]], to examine and use her ideas. [[Ron Murawski|Ron Murawski's]] Computer-Chess Wiki mentions GullChess as IvanHoe derivative <ref>[http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:chess_engine_list Chess Engine List] from [[Ron Murawski|Ron Murawski's]] [http://computer-chess.org/doku.php?id=home Computer-Chess Wiki]</ref>. The further socialization of concrete implementations with disputed origin in the public domain, as already started with Ippolit, remains a highly controversial topic.

Gull '''2.1''', released in June 2013, has [[Evaluation|evaluation]] weights optimized with the use of [[Automated Tuning|automated tuning]] (source code included). Gull's 2.1 evaluation is no longer almost identical to that of IvanHoe. Further, it features some minor search, [[Time Management|time management]] and [[Parallel Search|SMP]] efficiency enhancements <ref>[http://www.open-chess.org/viewtopic.php?f=7&t=109&start=120#p18910 Re: gull chess] by [[Vadim Demichev|ThinkingALot]], [[Computer Chess Forums|OpenChess Forum]], June 17, 2013 (Gull 2.1)</ref>.

* [http://immortalchess.net/forum/showthread.php?t=2354 Проект "Чайка"] by [[Vadim Demichev|ThinkingALot]], [[Computer Chess Forums|immortalchess]], June 07, 2010, [http://translate.google.com/translate?sl=ru&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fimmortalchess.net%2Fforum%2Findex.php translated] by [https://en.wikipedia.org/wiki/Google_Translate Google Translate]

: [http://www.open-chess.org/viewtopic.php?f=7&t=109&p=724#p724 Re: gull chess] by [[Vadim Demichev|ThinkingALot]], [[Computer Chess Forums|OpenChess Forum]], June 13, 2010 » [[Gaviota]]: [http://www.open-chess.org/viewtopic.php?f=7&t=109&start=120#p18910 Re: gull chess] by [[Vadim Demichev|ThinkingALot]], [[Computer Chess Forums|OpenChess Forum]], June 17, 2013 (Gull 2.1): [http://www.open-chess.org/viewtopic.php?f=7&t=109&start=150#p20221 Re: gull chess] by [[Vadim Demichev|ThinkingALot]], [[Computer Chess Forums|OpenChess Forum]], January 26, 2014 (Gull 2.8 beta & Gull 2.9 alpha)

* [http://www.open-chess.org/viewtopic.php?f=5&t=2378 DTS-like SMP] by [[Vadim Demichev|ThinkingALot]], [[Computer Chess Forums|OpenChess Forum]], July 25, 2013 » [[Parallel Search]]* [http://immortalchess.net/forum/showpost.php?p=464718&postcount=326 Re: Gull] by [[Vadim Demichev|ThinkingALot]], [[Computer Chess Forums|immortalchess]], February 10, 2014

* [http://gullchess.sourceforge.net/ SourceForge.net: GullChess - Project Web Hosting - Open Source Software] by [[Vadim Demichev|ThinkingALot]]