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Created page with "'''Home * Engines * Myrddin''' FILE:Llyfr Du Caerfyrddin t1.jpg|border|right|thumb| [https://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg Page 1..."
'''[[Main Page|Home]] * [[Engines]] * Myrddin'''
[[FILE:Llyfr Du Caerfyrddin t1.jpg|border|right|thumb| [https://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg Page 1] of [https://en.wikipedia.org/wiki/Black_Book_of_Carmarthen Black Book of Carmarthen] <ref>[https://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg Page 1] of [https://en.wikipedia.org/wiki/John_Gwenogvryn_Evans John Gwenogvryn Evans'] edition (1907) of the [https://en.wikipedia.org/wiki/Black_Book_of_Carmarthen Black Book of Carmarthen] (1250), being the [https://en.wikipedia.org/wiki/Peredur Ymddiddan] (dialogue) between [https://en.wikipedia.org/wiki/Myrddin_Wyllt Myrddin] and [https://en.wikipedia.org/wiki/Taliesin Taliesin]</ref> ]]
'''Myrddin''',<br/>
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=
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]].
=Etymology=
The program's name is related to its author's last name [https://it.wikipedia.org/wiki/Mago_Merlino Merlino], the [https://en.wikipedia.org/wiki/Italian_language Italian] equivalent of [https://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 [https://en.wikipedia.org/wiki/Welsh_language Welsh] Myrddin, the name of the bard [https://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==
* [https://en.wikipedia.org/wiki/Myrddin_%28disambiguation%29 Myrddin (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Myrddin_Wyllt Myrddin Wyllt from Wikipedia]
* [https://en.wikipedia.org/wiki/Merlin Merlin from Wikipedia]
* [http://it.wikipedia.org/wiki/Mago_Merlino Mago Merlino from Wikipedia.it] (Italian)
* [https://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 [https://en.wikipedia.org/wiki/Elis_Gruffydd Elis Gruffudd], 16th Century
* [[:Category:Soft Machine|Soft Machine]] - The Tale of [https://en.wikipedia.org/wiki/Taliesin Taliesin], from [https://en.wikipedia.org/wiki/Softs Softs], 1976, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: Lineup: [https://en.wikipedia.org/wiki/Roy_Babbington Roy Babbington], [https://en.wikipedia.org/wiki/John_Etheridge John Etheridge], [[:Category:John Marshall|John Marshall]], [[:Category:Karl Jenkins|Karl Jenkins]]
: {{#evu:https://www.youtube.com/watch?v=9gpaMTgBCx0|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:Soft Machine]]
[[Category:Karl Jenkins]]
[[Category:John Marshall]]
[[Category:WinBoard]]
[[FILE:Llyfr Du Caerfyrddin t1.jpg|border|right|thumb| [https://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg Page 1] of [https://en.wikipedia.org/wiki/Black_Book_of_Carmarthen Black Book of Carmarthen] <ref>[https://en.wikipedia.org/wiki/File:Llyfr_Du_Caerfyrddin_t1.jpg Page 1] of [https://en.wikipedia.org/wiki/John_Gwenogvryn_Evans John Gwenogvryn Evans'] edition (1907) of the [https://en.wikipedia.org/wiki/Black_Book_of_Carmarthen Black Book of Carmarthen] (1250), being the [https://en.wikipedia.org/wiki/Peredur Ymddiddan] (dialogue) between [https://en.wikipedia.org/wiki/Myrddin_Wyllt Myrddin] and [https://en.wikipedia.org/wiki/Taliesin Taliesin]</ref> ]]
'''Myrddin''',<br/>
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=
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]].
=Etymology=
The program's name is related to its author's last name [https://it.wikipedia.org/wiki/Mago_Merlino Merlino], the [https://en.wikipedia.org/wiki/Italian_language Italian] equivalent of [https://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 [https://en.wikipedia.org/wiki/Welsh_language Welsh] Myrddin, the name of the bard [https://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==
* [https://en.wikipedia.org/wiki/Myrddin_%28disambiguation%29 Myrddin (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Myrddin_Wyllt Myrddin Wyllt from Wikipedia]
* [https://en.wikipedia.org/wiki/Merlin Merlin from Wikipedia]
* [http://it.wikipedia.org/wiki/Mago_Merlino Mago Merlino from Wikipedia.it] (Italian)
* [https://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 [https://en.wikipedia.org/wiki/Elis_Gruffydd Elis Gruffudd], 16th Century
* [[:Category:Soft Machine|Soft Machine]] - The Tale of [https://en.wikipedia.org/wiki/Taliesin Taliesin], from [https://en.wikipedia.org/wiki/Softs Softs], 1976, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: Lineup: [https://en.wikipedia.org/wiki/Roy_Babbington Roy Babbington], [https://en.wikipedia.org/wiki/John_Etheridge John Etheridge], [[:Category:John Marshall|John Marshall]], [[:Category:Karl Jenkins|Karl Jenkins]]
: {{#evu:https://www.youtube.com/watch?v=9gpaMTgBCx0|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:Soft Machine]]
[[Category:Karl Jenkins]]
[[Category:John Marshall]]
[[Category:WinBoard]]
