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[[:Category:Heinrich Kley|Heinrich Kley]] - Centaur illustration, 1910 <ref>The front page of [https://en.wikipedia.org/wiki/Jugend_(magazine) Jugend magazine] 1910, Vol. 15, featured this illustration by [[:Category:Heinrich Kley|Heinrich Kley]], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons], source[: [https://digi.ub.uni-heidelberg.de/diglit/jugend1910_1/0095/image Jugend: Münchner illustrierte Wochenschrift für Kunst und Leben (15.1910, Band 1 (Nr. 1-26))] from [https://www.ub.uni-heidelberg.de/Englisch/helios/digi/digilit.html Heidelberg University Library: Heidelberg historic literature – digitized] </ref> ]]

a chess program by primary author [[Victor Vikhrev]] and [[Alexey Manjakhin]]. Centaur won the Its development already started in 1971, when Victor Vikhrev wrote his first chess program in [[First Soviet Computer-Chess Championship 1988Algol]] in for the [https://en.wikipedia.org/wiki/UlanBESM-Ude Ulan6 BESM-Ude6], and further competed at . During the 80s the program was re-written in [[First International Chess-Computer Tournament in the USSR 1989Pascal]] in to run on an [[httpsIBM PC]] <ref>http://enadamant1.wikipediafromru.orgcom/wikicentaur.html Кентавр (Russian, as of October 2018 no longer available)</Moscow Moscow], at three [[World Computer Chess Championship|World Computer Chess Championships]], the [[WCCC 1989]] in ref> <ref>[https://enchesspro.wikipedia.orgru/guestnew/looknullmessage/wiki?themeid=54&id=31&page=10#54-31-4381 ChessPro online | Шахматный форум | Новости мира движков] (Russian)</Edmonton Edmontonref>. As one of the rare instances of a [[Best-First|best-first]]searcher, the Centaur keeps its complete [[WCCC 1992Search Tree|search tree]] in [https://en.wikipedia.org/wiki/Madrid Madrid[Memory|memory]]considering multiple optimistic, realistic and the pessimistic [[WCCC 1999Evaluation|evaluation]] in scores, and to grow the tree based on the [https://en.wikipedia.org/wiki/Paderborn PaderbornProbability_distribution probability distribution]of those scores, four it seems quite similar to [[World Microcomputer Chess ChampionshipAndrew James Palay|World Microcomputer Chess ChampionshipsPalay's]] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=57 Centaur's ICGA Tournaments[B*#ProbabilityBasedSearch|PB*]]</ref> , two [[Uniform-Platform Computer Chess Championship|Uniform-Platform Computer Chess ChampionshipsAndrew James Palay]]('''1983'''). ''Searching with Probabilities''. Ph.D. thesis, and three [[Aegon Tournaments|Aegon Man-Machine TournamentsCarnegie Mellon University]] <ref>, [http://www.csvndtic.nlmil/dtic/tr/fulltext/indexu2/a221478.php?option=com_content&task=view&id=121&Itemid=50 CSVN Aegon 1995 sitepdf pdf]</ref> <ref>[http://www[Hans Berliner]], [[Chris McConnell]] ('''1995''').csvn''B* Probability Based Search.nl/index.php?option=com_content&task=view&id=122&Itemid=50 CSVN Aegon 1996 site'' [[Carnegie Mellon University]]Computer Science research report</ref> . A [[MS-DOS|DOS]] version of Centaur featuring a [[3D Graphics Board|3D graphics board]] was released in the early 90s, a 16-bit [[Windows|Windows 3.x]] version was commercially available since the mid 90s <ref>[http://www.csvnforo.nlmeca-web.es/indexviewtopic.php?optionf=com_content9&taskt=view72&id=123&Itemidstart=50 CSVN Aegon 1997 site#p8510 Re: La Máquina Preservadora. Programas de Ajedrez]by Tibono, [[Computer Chess Forums|Meca Foro]], October 09, 2015 (Spanish)</ref>.

=Tournament Play=Centaur, along with some code units incorporated from won the [[MirageFirst Soviet Computer-Chess Championship 1988]] by in [[Vladimir Rybinkin]https://en.wikipedia.org/wiki/Ulan-Ude Ulan-Ude] , and further competed at the [[Yuri ShpeerFirst International Chess-Computer Tournament in the USSR 1989]] in [https://en.wikipedia.org/wiki/Moscow Moscow], further evolved to the at three [[Dragon (World Computer Chess Assistant)Championship|DragonWorld Computer Chess Championships]] analysis engine of , the [[ChessOK|Convekta'sWCCC 1989]]in [https://en.wikipedia.org/wiki/Edmonton Edmonton] , the [[Chess AssistantWCCC 1992]] database <ref>in [httphttps://chessoken.comwikipedia.org/?page_id=19894 Chess Assistantwiki/Madrid Madrid] - , and the [[ChessOKWCCC 1999]]<in [https://en.wikipedia.org/wiki/ref>Paderborn Paderborn], not to confused with the original four [[Dragon RUWorld Microcomputer Chess Championship|DragonWorld Microcomputer Chess Championships]] engine by Yuri Shpeer ([[WMCCC 1991]], [[WMCCC 1993]], [[WMCCC 1995]], [[WMCCC 1996]]) <ref>[httphttps://www.game-ai-forum.ixbt.comorg/icga-tournaments/topicprogram.cgiphp?id=26:3975157 Centaur's ICGA Tournaments]</ref>, two [[Uniform-Platform Computer Chess Championship|Uniform-20#308 Заставить работать машину клиента! Platform Computer Chess Championships]] ([[UPCCC 1993]], [20[UPCCC 1994] ]), and three [[Aegon Tournaments|Aegon Man- Конференция iXBT.comMachine Tournaments]] ([[Aegon 1995]], September 01[[Aegon 1996]], 2009</ref>[[Aegon 1997]]).

=ScreenshotDragon=Centaur, along with some code units incorporated from [[Mirage]] by [[Vladimir Rybinkin]] and [[Yuri Shpeer]], further evolved to the [[Dragon (Chess Assistant)|Dragon]] analysis engine of [[ChessOK|Convekta's]] [[Chess Assistant]] database <ref>[http://chessok.com/?page_id=19894 Chess Assistant] - [[ChessOK]]</ref>, not to confused with the original [[Dragon RU|Dragon]] engine by Yuri Shpeer <ref>[http://forum.ixbt.com/topic.cgi?id=26:39751-20#308 Заставить работать машину клиента! Конференция] by [[Vladimir Rybinkin]], [http://forum.ixbt.com/ Конференция iXBT.com], September 01, 2009</ref>.  =Screenshots= ==DOS==[[FILE:Centaur_DOS.png|none|border|text-bottom|640px|link=http://www.foro.meca-web.es/viewtopic.php?f=9&t=72&start=50#p8510]]Centaur for [[MS-DOS|DOS]]==Windows==

Centaur Screen for [[Windows|Windows 3.x]] <ref>[http://www.septober.de/chess/index.htm Septober - Computerschach] by [http://www.septober.de/impressum.htm Herbert Marquardt]</ref>

17.Bxd3 Nxf4 18.Bf5 Kf8 19.Rad1 g6 20.Be4 Ne621Ne6 21.Bd5 Nd8 22.Re2 c6 23.Bc4 b5 24.Bb3 f5

Last modification of Centaur uses some code units from program [[Mirage]], which is made in Russia. Principles of Centaur are described in [[ICGA Journal|ICCA Journal]] 1996, 2 <ref>[[Victor Vikhrev]] ('''1996''') . ''The Choice of a Research Direction''. [[ICGA Journal#19_2|ICCA Journal, Vol. 19, No. 2]]</ref>

* [[Victor Vikhrev]] ('''1996''') . ''The Choice of a Research Direction''. [[ICGA Journal#19_2|ICCA Journal, Vol. 19, No. 2]]

=Forum Posts===1993 ...==

* [httphttps://adamant1chesspro.fromru.comru/centaur.html Кентавр] (Russian): [http:guestnew/looknullmessage/translate.googleusercontent.com/translate_c?hlthemeid=de54&ieid=UTF831&prevpage=_t&rurl=translate.google.com&sl=ru&tl=en&u=http://adamant1.fromru.com/centaur.html&usg=ALkJrhh9ykrIOkFOeXrwD7waeVgWzKCkQA Centaur], translated by [https://en.wikipedia.org/wiki/Google_Translate Google Translate10#54-31-4381 ChessPro online | Шахматный форум | Новости мира движков](Russian)* [http://www.top-5000.nl/cp.htm Download Free Chess ProgramsDownloads] hosted by [[Ed Schroder|Ed Schröder]]==Misc==