Older Version
Newer Version
GerdIsenberg
Oct 19, 2016
**[[Home]] * [[Engines]] * Myrddin** || [[image:396px-Llyfr_Du_Caerfyrddin_t1.jpg width="256" height="386" link="http://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg"]] ||~ || **Myrddin**, a [[Chess Engine Communication Protocol]] aka [[WinBoard]] compliant chess engine by [[John Merlino]]. Myrddin started its life in 2009 as a [[0x88]] engine with rudimentary [[Evaluation|evaluation]] based on [[Material|material]] and [[Piece-Square Tables|piece-square tables]] <ref>[[http://www.talkchess.com/forum/viewtopic.php?t=26729|Introducing Myrddin v0.0000001a]] by [[John Merlino]], [[CCC]], February 24, 2009</ref> , and was converted to [[Bitboards|bitboards]] in 2012 with v0.86. [[Search]] is basically [[Alpha-Beta|alpha-beta]] with generally conservative [[Extensions|extensions]] and [[Reductions|reductions]]. Myrddin's [[Static Exchange Evaluation|SEE]] implementation is based on pseudo-code by [[Andres Valverde]] <ref>[[http://computer-chess.org/doku.php?id=computer_chess:engines:myrddin:index|Myrddin]] by [[John Merlino]], [[http://computer-chess.org/doku.php?id=home|Computer-Chess Wiki]] by [[Ron Murawski]]</ref>. Myrddin **0.87**, released in January 2015, features a [[Lazy SMP|lazy parallel search]] using [[Process|processes]] and a [[Shared Hash Table|shared hash table]] <ref>[[http://www.talkchess.com/forum/viewtopic.php?t=55093|Myrddin 0.87 release]] by [[John Merlino]], [[CCC]], January 25, 2015</ref>, based on an idea from [[Harm Geert Muller]]. || || [[http://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg|Page 1]] of [[http://en.wikipedia.org/wiki/Black_Book_of_Carmarthen|Black Book of Carmarthen]] <ref>[[http://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg|Page 1]] of [[http://en.wikipedia.org/wiki/John_Gwenogvryn_Evans|John Gwenogvryn Evans']] edition (1907) of the [[http://en.wikipedia.org/wiki/Black_Book_of_Carmarthen|Black Book of Carmarthen]] (1250), being the [[http://en.wikipedia.org/wiki/Peredur|Ymddiddan]] (dialogue) between [[http://en.wikipedia.org/wiki/Myrddin_Wyllt|Myrddin]] and [[http://en.wikipedia.org/wiki/Taliesin|Taliesin]]</ref> ||~ ||^ || [[toc]] =Etymology= The program's name is related to its author's last name [[http://it.wikipedia.org/wiki/Mago_Merlino|Merlino]], the [[http://en.wikipedia.org/wiki/Italian_language|Italian]] equivalent of [[http://en.wikipedia.org/wiki/Merlin|Merlin]] <ref>[[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=410903&t=39407|Re: Programmers: what's the story behind the name of your engine]] by [[John Merlino]], [[CCC]], June 21, 2011</ref> , a legendary figure best known as the [[Various Classifications#Magic|wizard]] featured in the [[Various Classifications#Arthur|Arthurian legend]], derived from the [[http://en.wikipedia.org/wiki/Welsh_language|Welsh]] Myrddin, the name of the bard [[http://en.wikipedia.org/wiki/Myrddin_Wyllt|Myrddin Wyllt]]. =See also= * [[Various Classifications#Arthur|Arthurian legend]] * [[Various Classifications#Magic|Magic]] * [[The King]] =Forum Posts= ==2009== * [[http://www.talkchess.com/forum/viewtopic.php?t=26729|Introducing Myrddin v0.0000001a]] by [[John Merlino]], [[CCC]], February 24, 2009 * [[http://www.talkchess.com/forum/viewtopic.php?t=26935|Myrddin v0.80 Alpha 1 release]] by [[John Merlino]], [[CCC]], May 09, 2009 * [[http://www.talkchess.com/forum/viewtopic.php?t=28154|Myrddin v0.81 Alpha 2 release]] by [[John Merlino]], [[CCC]], May 29, 2009 * [[http://www.talkchess.com/forum/viewtopic.php?t=29892|Myrddin 0.82 release]] by [[John Merlino]], [[CCC]], September 27, 2009 ==2010 ...== * [[http://www.talkchess.com/forum/viewtopic.php?t=32857|Myrddin 0.83 release]] by [[John Merlino]], [[CCC]], February 23, 2010 * [[http://www.talkchess.com/forum/viewtopic.php?t=36128|Myrddin 0.84 release]] by [[John Merlino]], [[CCC]], September 20, 2010 * [[http://www.talkchess.com/forum/viewtopic.php?t=38965|Myrddin 0.85 release]] by [[John Merlino]], [[CCC]], May 03, 2011 * [[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=410903&t=39407|Re: Programmers: what's the story behind the name of your engine]] by [[John Merlino]], [[CCC]], June 21, 2011 * [[http://www.talkchess.com/forum/viewtopic.php?t=46541|Myrddin 0.86 release]] by [[John Merlino]], [[CCC]], December 22, 2012 * [[http://www.talkchess.com/forum/viewtopic.php?t=51198|SMP and pondering]] by [[John Merlino]], [[CCC]], February 08, 2014 » [[Parallel Search]], [[Pondering]] ==2015 ...== * [[http://www.talkchess.com/forum/viewtopic.php?t=55093|Myrddin 0.87 release]] by [[John Merlino]], [[CCC]], January 25, 2015 =External Links= ==Chess program== * [[http://computer-chess.org/doku.php?id=computer_chess:engines:myrddin:index|Myrddin]] by [[John Merlino]], [[http://computer-chess.org/doku.php?id=home|Computer-Chess Wiki]] by [[Ron Murawski]] * [[http://wbec-ridderkerk.nl/html/details1/Myrddin.html|Myrddin]] from [[WBEC|WBEC Ridderkerk]] * [[http://www.computerchess.org.uk/ccrl/4040/cgi/engine_details.cgi?match_length=30&print=Details&each_game=1&eng=Myrddin%200.84%2032-bit|Myrddin 0.84 32-bit]] in [[CCRL|CCRL 40/40]] * [[http://www.computerchess.org.uk/ccrl/4040/cgi/engine_details.cgi?match_length=30&print=Details&each_game=1&eng=Myrddin%200.85%2064-bit|Myrddin 0.85 64-bit]] in [[CCRL|CCRL 40/40]] * [[http://www.computerchess.org.uk/ccrl/4040/cgi/engine_details.cgi?match_length=30&each_game=1&print=Details&each_game=1&eng=Myrddin%200.86%2064-bit#Myrddin_0_86_64-bit|Myrddin 0.86 64-bit]] in [[CCRL|CCRL 40/40]] ==Misc== * [[http://en.wikipedia.org/wiki/Myrddin_%28disambiguation%29|Myrddin (disambiguation) from Wikipedia]] * [[http://en.wikipedia.org/wiki/Myrddin_Wyllt|Myrddin Wyllt from Wikipedia]] * [[http://en.wikipedia.org/wiki/Merlin|Merlin from Wikipedia]] * [[http://it.wikipedia.org/wiki/Mago_Merlino|Mago Merlino from Wikipedia.it]] (Italian) * [[http://en.wikipedia.org/wiki/Prophetiae_Merlini|Prophetiae Merlini from Wikipedia]] * [[http://www.arthuriana.co.uk/n&q/myrddin.htm|Myrddin & Merlin: A Guide to the Early Evolution of the Merlin Legend]] from [[http://www.arthuriana.co.uk/index.html|Arthuriana]] by [[http://www.arthuriana.co.uk/contact.htm|Thomas Green]] * [[http://www.walestheosophy.co.uk/avalondinasemrys.htm|Theosophy Avalon / Ynys Witrin - The Theosophy Wales King Arthur Pages - Vortigern's Stronghold Dinas Emrys]] * [[http://witchfulthinking.wordpress.com/2010/04/12/god-oracle-myrddin/|Myrddin « Witchful Thinking]] * [[http://jeffdiehl.com/newpage11.htm|Myrddin Emry]] by [[http://jeffdiehl.com/|Jeffrey Elric Diehl]] * [[http://www.santharia.com/bestiary/myrddin_falcon.htm|The Myrddin Falcon]] by [[http://www.santharia.com/team/bard_judith.htm|Bard Judith]] * [[http://www.maryjones.us/ctexts/myrddin.html|The Story of Myrddin Wyllt]] by [[http://en.wikipedia.org/wiki/Elis_Gruffydd|Elis Gruffudd]], 16th Century * [[Videos#SoftMachine|Soft Machine]] - The Tale of [[http://en.wikipedia.org/wiki/Taliesin|Taliesin]], from [[http://en.wikipedia.org/wiki/Softs|Softs]], 1976, [[http://en.wikipedia.org/wiki/YouTube|YouTube]] Video > Lineup: [[http://en.wikipedia.org/wiki/Roy_Babbington|Roy Babbington]], [[http://en.wikipedia.org/wiki/John_Etheridge|John Etheridge]], [[Videos#JohnMarshall|John Marshall]], [[Videos#KarlJenkins|Karl Jenkins]] > [[media type="custom" key="24948822"]] =References= <references /> =What links here?= [[include page="Myrddin" component="backlinks" limit="40"]] **[[Engines|Up one Level]]**