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Mark Lefler

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Created page with "'''Home * People * Mark Lefler''' '''Mark Lefler''', thumb|right|Mark Lefler an American computer games and chess programmer. He is author of..."
'''[[Home]] * [[People]] * Mark Lefler'''

'''Mark Lefler''',
[[File:marklefler.jpg|thumb|right|Mark Lefler]]
an American computer games and chess programmer. He is author of the computer chess program [[Now]] and along with [[Jeff Mallett]] co-author of the [[General Game Playing|general game playing]] program [[Zillions of Games]] <ref>[https://en.wikipedia.org/wiki/Zillions_of_Games Zillions of Games from Wikipedia]</ref> as well a co-founder of the //Zillions Development Corporation// <ref>[http://www.zillions-of-games.com/zildev.html Zillions Development Corporation]</ref>. In October 2013, [[Don Dailey]] introduced Mark Lefler as new member of the [[Komodo]] team <ref>[http://www.talkchess.com/forum/viewtopic.php?t=49623&start=23 Who is Don/Larry's new partner!?] by [[Don Dailey]], [[CCC]], October 08, 2013</ref>.
Mark graduated in 1981 with a BS degree in Engineering Science and Mechanics from [https://en.wikipedia.org/wiki/Virginia_Polytechnic_Institute_and_State_University Virginia Polytechnic Institute and State University]. His non-computer interests include performing magic, music, and gaming <ref>[http://www.zillions-of-games.com/whoarewe.html Who Are We?] - About the founders Mark Lefler and [[Jeff Mallett]] & others working for Zillions Development Corporation</ref> . Mark served as member of the [[Who's Who|Secretariat]] of [[ICGA Investigations]] in 2011, and superseded [[Rémi Coulom]] as Programmers Representative of the [[ICGA]] in November 2011. Mark founded this [[Main Page|Chess Programming Wiki]] on October 26, 2007 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=17344&start=4 Re: community test result web page?] by Mark Lefler, [[CCC]], October 26, 2007</ref> .

=Photos=
==WCCC 1999==
[[File:IkarusNow.jpg|thumb|none|text-bottom|640px|link=http://wwwcs.uni-paderborn.de/%7Ewccc99/links/gallery.html|[[Munjong Kolss|Munjong]] & [[Muntsin Kolss]] and Mark Lefler, [[WCCC 1999]]: [[Ikarus]] - [[Now]] <ref>Photo from the no longer available [[ChessBase]] site</ref>]]

==WCCC 2016==
[[File:WCCC2016_TeamKomodoShannonTrophy.jpg|thumb|none|text-bottom|640px|link=https://icga.leidenuniv.nl/?page_id=1930|[[WCCC 2016]], [[Komodo]] team [[Erdogan Günes]] and Mark Lefler with the [[Shannon Trophy]] <ref>[https://icga.leidenuniv.nl/?page_id=1930 ICGA Events 2016: Photos Day 7] by [[Jan Krabbenbos]]</ref>]]

=Forum Posts=
==1990 ...==
* [https://groups.google.com/d/msg/rec.games.chess/k5SpKfnEgnY/hAZr93tIsdkJ Computer Chess Feature You Want] by Mark Lefler, [[Computer Chess Forums|rgc]], November 13, 1994
* [https://groups.google.com/d/msg/rec.games.chess/GUHY0y8RB30/dyAhpbFUvygJ Hyatt Phrase Maker] by Mark Lefler, [[Computer Chess Forums|rgc]], June 11, 1995
* [https://groups.google.com/d/msg/rec.games.chess.computer/QNhNIc-LZLc/bhvIdneVexkJ Autoplay Interface?] by Mark Lefler, [[Computer Chess Forums|rgcc]], May 21, 1996
* [https://groups.google.com/d/msg/rec.games.chess.computer/B_xAWZnWwaA/Uo-bRcMQVRsJ Shannon A, Shannon B] by Mark Lefler, [[Computer Chess Forums|rgcc]], July 16, 1996
==2000 ...==
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=4660 Simple NULL move enhancement, checks in qsearch] by mjlef, [[Computer Chess Forums|Winboard Forum]], April 14, 2006 » [[Null Move Pruning]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=4710 PV based decisions] by mjlef, [[Computer Chess Forums|Winboard Forum]], April 27, 2006 » [[Principal Variation]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=4820 Extension - Reductions and threats] by mjlef, [[Computer Chess Forums|Winboard Forum]], May 17, 2006 » [[Selectivity]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=4952 Worthless extension ideas...] by mjlef, [[Computer Chess Forums|Winboard Forum]], June 06, 2006
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=5072 Search Inconsistencies] by mjlef, [[Computer Chess Forums|Winboard Forum]], June 23, 2006 » [[Search Instability]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=5220 CPU usage at 505 in Winboard Engine] by mjlef, [[Computer Chess Forums|Winboard Forum]], July 19, 2006 » [[WinBoard]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=5293&p=26451#p26434 Re: Idea for opening book] by mjlef, [[Computer Chess Forums|Winboard Forum]], August 02, 2006 » [[Persistent Hash Table]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=5377 Piece Cooperation and Penalties] by mjlef, [[Computer Chess Forums|Winboard Forum]], August 14, 2006 » [[Material Tables]]
'''2007'''
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=6066 Reducing King Moves?] by mjlef, [[Computer Chess Forums|Winboard Forum]], January 03, 2007 » [[Reductions]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=6072 Castling legality check] by mjlef, [[Computer Chess Forums|Winboard Forum]], January 04, 2007 » [[Castling]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=6421 How good is your SEE?] by mjlef, [[Computer Chess Forums|Winboard Forum]], April 24, 2007 » [[Static Exchange Evaluation]]
* [http://www.talkchess.com/forum/viewtopic.php?t=14333 Revisiting Check Extensions] by Mark Lefler, [[CCC]], June 07, 2007 » [[Check Extensions]]
* [http://www.talkchess.com/forum/viewtopic.php?t=14366 Help Finding X] by Mark Lefler, [[CCC]], June 08, 2007
* [http://www.talkchess.com/forum/viewtopic.php?t=14578 Is this rule safe (how has K&Ps vs K&Ps databases? ...)] by Mark Lefler, [[CCC]], June 20, 2007 » [[KPK]], [[Now]], [[Pawn Endgame]]
* [http://www.talkchess.com/forum/viewtopic.php?t=14860 Delaying Extensions Idea (does anyone do this)?] by Mark Lefler, [[CCC]], July 03, 2007 » [[Extensions]]
* [http://www.talkchess.com/forum/viewtopic.php?t=15304 LMR other conditions] by Mark Lefler, [[CCC]], July 23, 2007 » [[Late Move Reductions]]
* [http://www.talkchess.com/forum/viewtopic.php?t=15960 If You Were Starting From Scratch] by Mark Lefler, [[CCC]], August 22, 2007
* [http://www.talkchess.com/forum/viewtopic.php?t=17344&start=4 Re: community test result web page?] by Mark Lefler, [[CCC]], October 26, 2007 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=17344 community test result web page?] by [[Sam Hamilton]], [[CCC]], October 25, 2007</ref>
'''2008'''
* [http://www.talkchess.com/forum/viewtopic.php?t=20320 Backward Pawns] by Mark Lefler, [[CCC]], March 24, 2008 » [[Backward Pawn]]
'''2009'''
* [http://www.talkchess.com/forum/viewtopic.php?t=27387 Relative Piece Values] by Mark Lefler, [[CCC]], April 09, 2009 » [[Point Value]]
* [http://www.talkchess.com/forum/viewtopic.php?t=27616 Testing of Kaufman Material Values] by Mark Lefler, [[CCC]], April 25, 2009 » [[Point Value]], [[Material]]
* [http://www.talkchess.com/forum/viewtopic.php?t=27842 Rook Pair Penalty, Knight Pair Penalty, Having a Pawn Bonus] by Mark Lefler, [[CCC]], May 11, 2009 » [[Material]]
* [http://www.talkchess.com/forum/viewtopic.php?t=28167 Side to Move Bonus - does it help?] by Mark Lefler, [[CCC]], May 29, 2009 » [[Tempo]]
* [http://www.talkchess.com/forum/viewtopic.php?t=28266 No PVS at low depths?] by Mark Lefler, [[CCC]], June 05, 2009 » [[Principal Variation Search]]
* [http://www.talkchess.com/forum/viewtopic.php?t=30211 Singular Extensions revisited] by Mark Lefler, [[CCC]], October 19, 2009 » [[Singular Extensions]]
* [http://www.talkchess.com/forum/viewtopic.php?t=31117 Knowing your opponents] by Mark Lefler, [[CCC]], December 17, 2009
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=31464 SEE Improvement Idea] by Mark Lefler, [[CCC]], January 04, 2010 » [[Static Exchange Evaluation]]
* [http://www.talkchess.com/forum/viewtopic.php?t=32396 Correcting Evaluation with the hash table] by Mark Lefler, [[CCC]], February 05, 2010 » [[Evaluation]]
* [http://www.talkchess.com/forum/viewtopic.php?t=32407 Futility Idea based on total score] by Mark Lefler, [[CCC]], February 06, 2010 » [[Futility Pruning]]
* [http://www.talkchess.com/forum/viewtopic.php?t=53030 FIDE's new rules for chess] by Mark Lefler, [[CCC]], July 20, 2014
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=57510 Looking for PGN file tools] by Mark Lefler, [[CCC]], September 04, 2015 » [[Portable Game Notation#Utilities|PGN Utilities]]
* [http://www.talkchess.com/forum/viewtopic.php?t=59530 Moore's Law] by Mark Lefler, [[CCC]], March 16, 2016 <ref>[https://en.wikipedia.org/wiki/Moore%27s_law Moore's law from Wikipedia]</ref>
* [http://www.talkchess.com/forum/viewtopic.php?t=63515 Position Legally Reachable?] by Mark Lefler, [[CCC]], March 21, 2017 » [[Retrograde Analysis]]
* [http://www.talkchess.com/forum/viewtopic.php?t=64158 Scientific American article on Computer Chess] by Mark Lefler, [[CCC]], June 03, 2017 <ref>[https://www.scientificamerican.com/article/20-years-after-deep-blue-how-ai-has-advanced-since-conquering-chess/ 20 Years after Deep Blue: How AI Has Advanced Since Conquering Chess] by [https://www.crunchbase.com/person/larry-greenemeier Larry Greenemeier], [[Scientific American]], June 2, 2017</ref> » [[Murray Campbell]], [[Artificial Intelligence]], [[Kasparov versus Deep Blue 1997]]

=External Links=
* [http://www.game-ai-forum.org/icga-tournaments/person.php?id=69 Mark Lefler's ICGA Tournaments]
* [http://www.zillions-of-games.com/index.html Zillions of Games]
* [http://en.chessbase.com/post/komodo-8-about-the-authors Komodo 8: about the authors], [[ChessBase|ChessBase News]], September 19, 2014
* [http://www.bbc.com/future/story/20151201-the-cyborg-chess-players-that-cant-be-beaten BBC - Future - The cyborg chess players that can’t be beaten] by [http://www.chrisbaraniuk.com/ Chris Baraniuk], December 04, 2015 » [[David Levy]], [[Boris Alterman]], [[Shay Bushinsky]], Mark Lefler
* [http://www.chessdom.com/interview-with-robert-houdart-mark-lefler-and-gm-larry-kaufman/ Interview with Robert Houdart, Mark Lefler and GM Larry Kaufman] by [[Nelson Hernandez]], [[Chessdom]], November 23, 2017 » [[TCEC Season 10]]

=References=
<references />

'''[[People|Up one level]]'''

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