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Sep 28, 2016
**[[Home]] * [[Engines]] * BigLion** || [[image:206px-Sultan_the_Barbary_Lion.jpg link="https://commons.wikimedia.org/wiki/File:Sultan_the_Barbary_Lion.jpg"]] ||~ || **BigLion**, a [[Chess Engine Communication Protocol]] aka [[WinBoard]] and [[UCI]] compliant chess engine by [[Matthias Gemuh]], written in [[Cpp|C++]] using [[https://en.wikipedia.org/wiki/Borland|Borland]] [[https://en.wikipedia.org/wiki/C++Builder|C++Builder 5.0]], first released in April 2002 as announced by [[Frank Quisinsky]] <ref> [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=36997|WB/UCI BigLion by Matthias Gemuh is available!]] by [[Frank Quisinsky]], [[Computer Chess Forums|Winboard Forum]], April 23, 2002</ref>. Since 2.23w in fall 2005, BigLion is able to play [[Chess960]] <ref>[[http://www.stmintz.com/ccc/index.php?id=464215|BigLion 2.23w and Taktix 2.23w]] by [[Matthias Gemuh]], [[CCC]], November 24, 2005</ref>. || || Sultan the Barbary Lion <ref>[[https://commons.wikimedia.org/wiki/File:Sultan_the_Barbary_Lion.jpg|Sultan]] the [[https://en.wikipedia.org/wiki/Barbary_lion|Barbary Lion]], [[https://en.wikipedia.org/wiki/Bronx_Zoo|Bronx Zoo]] , 1899, [[https://en.wikipedia.org/wiki/Wikimedia_Commons|Wikimedia Commons]]</ref> <ref>According to an article from the February 01, 1903 issue of the [[https://en.wikipedia.org/wiki/The_New_York_Times|New York Times]], Sultan and a female named Bedouin Maid were gifts to the zoo from Nelson Robinson. “Sultan,” the article states, “is four years old and is considered to be as handsome and perfect a specimen as ever trod a cage floor. He is also unusually good tempered.” from [[http://thewildlife.wbur.org/2016/02/17/sultan-a-king-among-lions/|Sultan: A King Among Lions]] by [[https://vickicroke.com/about/|Vicki Croke]], [[http://thewildlife.wbur.org/|WBUR's The Wild Life]], February 17, 2016</ref> ||~ ||^ || [[toc]] =Features= <ref>ChessGUI4Stick.zip\ChessGUI4Stick\Portable_Engines\UCI\BigLion_223\readme.txt</ref> ==[[Board Representation]]== * [[Bitboards]] * [[Rotated Bitboards]] ==[[Search]]== * [[Iterative Deepening]] * [[Aspiration Windows]] * [[Principal Variation Search|PVS]] * [[Selectivity]] ** [[Null Move Pruning]] ** [[Extensions#FractionalExtensions|Fractional Extensions]] ** [[Razoring]] * [[Move Ordering]] ** [[Hash Move]] ** [[Internal Iterative Deepening]] ** [[Killer Heuristic]] ** [[History Heuristic]] ** [[Static Exchange Evaluation]] ==[[Evaluation]]== * [[Material]] * [[Pawn Structure]] * [[Bishop Pair]] * [[Rook on open file|Rook on Open File]] * [[Rook on Seventh|Rook (Queen) on 7th]] * [[Center Control]] * [[Mobility]] * [[Trapped Pieces|Trapped Bishop]] * [[Connectivity]] * [[Evaluation of Pieces#Queen|Early Queen]] * [[King Safety]] ** [[King Safety#PawnShield|Pawn Shield]] ** [[King Safety#KingTropism|King Tropism]] ** [[King Safety#Attacking|Attacking King Zone]] ** [[Castling rights]] * [[Double Attack|Forks]] * [[Pin|Pins]] ==[[Hash Table|Hash Tables]]== * [[Transposition Table#TwoTier|Two-tier Transposition Table]] in [[Search|Main Search]] * [[Transposition Table#AlwaysReplace|Always Replace Transposition Table]] in [[Quiescence Search]] * [[Evaluation Hash Table]] * [[Pawn Hash Table]] * [[Move List|Move Lists]] <ref>[[http://www.stmintz.com/ccc/index.php?id=262764|BigLion and Tournaments]] by [[Matthias Gemuh]], [[CCC]], October 31, 2002</ref> =See also= * [[ChessGUI]] * [[Lion]] * [[Various Classifications#Mammal|Mammal]] * [[Taktix]] =Forum Posts= ==2002 ...== * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=36997|WB/UCI BigLion by Matthias Gemuh is available!]] by [[Frank Quisinsky]], [[Computer Chess Forums|Winboard Forum]], April 23, 2002 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=37045|BigLion 0.3]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], April 27, 2002 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=37083|BigLion now has Homepage]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], April 30, 2002 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=37121|BigLion 0.5]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], May 02, 2002 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=38167|BigLion 1.0]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], July 13, 2002 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=38472|BigLion against world elite]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], August 04, 2002 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=39500|BigLion 1.3]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], October 11, 2002 * [[http://www.stmintz.com/ccc/index.php?id=262764|BigLion and Tournaments]] by [[Matthias Gemuh]], [[CCC]], October 31, 2002 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=40225|BigLion and fine 70]] by [[Sune Fischer]], [[Computer Chess Forums|Winboard Forum]], December 09, 2002 » [[Lasker-Reichhelm Position]] **2003** * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=41495|BigLion says Good Bye]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], March 01, 2003 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=42512|BigLion: Now he too can cheat !]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], May 07, 2003 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=42932|BigLion+Taktix : no more updates]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], June 09, 2003 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=43095|For Matthias: a question about Big Lion/Taktix]] by Telmo Escobar, [[Computer Chess Forums|Winboard Forum]], June 21, 2003 * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=43632|BigLion loses 100 Elo points and also 50% speed]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], August 01, 2003 **2004** * [[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=48369|About BigLion 2.23n (and AEGT)]] by [[Matthias Gemuh]], [[Computer Chess Forums|Winboard Forum]], July 28, 2004 ==2005 ...== * [[http://www.stmintz.com/ccc/index.php?id=464214|Chess960 in Fritz9GUI and Winboard_frc]] by [[Matthias Gemuh]], [[CCC]], November 24, 2005 > [[http://www.stmintz.com/ccc/index.php?id=464215|BigLion 2.23w and Taktix 2.23w]] by [[Matthias Gemuh]], [[CCC]], November 24, 2005 * [[http://www.talkchess.com/forum/viewtopic.php?t=16978|BigLion 2.23x : 2017]] by [[Patrick Buchmann]], [[CCC]], October 06, 2007 * [[http://www.talkchess.com/forum/viewtopic.php?t=18990|BigLion80]] by [[Matthias Gemuh]], [[CCC]], January 16, 2008 * [[http://www.talkchess.com/forum/viewtopic.php?t=29000|BigLion and burn out]] by [[Matthias Gemuh]], [[CCC]], July 17, 2009 * [[http://www.talkchess.com/forum/viewtopic.php?t=29750|CCC Forum vs BigLion chess960]] by Spock, [[CCC]], September 14, 2009 ==2010 ...== * [[http://www.talkchess.com/forum/viewtopic.php?t=52975|BigLion and his clan have moved]] by [[Matthias Gemuh]], [[CCC]], July 14, 2014 =External Links= ==Chess Engine== * [[http://www.chess.hylogic.de/|BigLion Homepage]] * [[http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=BigLion&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents|BigLion]] in [[CCRL|CCRL 40/40]] ==Misc== * [[https://en.wikipedia.org/wiki/Lion|Lion from Wikipedia]] * [[https://en.wikipedia.org/wiki/Barbary_lion|Barbary lion from Wikipedia]] * [[https://en.wikipedia.org/wiki/Lion_%28disambiguation%29|Lion (disambiguation) from Wikipedia]] * [[Videos#ManuDibango|Manu Dibango]] - Lion of Africa, at the [[https://en.wikipedia.org/wiki/Barbican_Centre|Barbican Centre]], [[https://en.wikipedia.org/wiki/London|London]], March 2007, [[https://en.wikipedia.org/wiki/YouTube|YouTube]] Video > [[media type="youtube" key="_xCUPx4JEws"]] =References= <references /> =What links here?= [[include page="BigLion" component="backlinks" limit="40"]] **[[Engines|Up one level]]**