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BigLion

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Created page with "'''Home * Engines * BigLion''' FILE:Sultan the Barbary Lion.jpg|border|right|thumb| Sultan the Barbary Lion <ref>[https://commons.wikimedia.org/wiki/File:..."
'''[[Main Page|Home]] * [[Engines]] * BigLion'''

[[FILE:Sultan the Barbary Lion.jpg|border|right|thumb| 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> ]]

'''BigLion''',<br/>
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>[https://www.stmintz.com/ccc/index.php?id=464215 BigLion 2.23w and Taktix 2.23w] by [[Matthias Gemuh]], [[CCC]], November 24, 2005</ref>.

=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>[https://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
* [https://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 ...==
* [https://www.stmintz.com/ccc/index.php?id=464214 Chess960 in Fritz9GUI and Winboard_frc] by [[Matthias Gemuh]], [[CCC]], November 24, 2005
: [https://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
: {{#evu:https://www.youtube.com/watch?v=_xCUPx4JEws|alignment=left|valignment=top}}

=References=
<references />

'''[[Engines|Up one level]]'''
[[Category:WinBoard]]
[[Category:UCI]]
[[Category:Chess960]]

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