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'''[[Main Page|Home]] * [[Engines]] * Marvin'''
'''Marvin''',<br/>
an [[UCI]] and [[Chess Engine Communication Protocol]] compatible chess engine by [[Martin Danielsson]], written in [[C]].
Marvin was originally developed in the early 2000s until 2005, released in May 2004 <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=47529&p=179735 Marvin - new Winboard engine] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], May 09, 2004</ref> and January 2005 <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=1212&p=5492 Marvin 1.3.0] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], January 01, 2005</ref> as closed source engine.
After ten years "out of business", Martin Danielsson restarted the development in 2015 - the completely rewritten Marvin '''2.0.0''' was released as [[:Category:Open Source|open source engine]] under the terms of the [[Free Software Foundation#GPL|GNU General Public License]] (GPL3) in March 2017 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=63518 Marvin 2.0.0 released] by [[Martin Danielsson]], [[CCC]], March 21, 2017</ref>.
=Features=
<ref>[https://github.com/bmdanielsson/marvin-chess GitHub - bmdanielsson/marvin-chess: Marvin - An UCI/XBoard compatible chess engine]</ref>
==[[Board Representation]]==
* [[Bitboards]]
* [[8x8 Board]]
* [[Magic Bitboards#Plain|Plain Magic Bitboards]]
==[[Search]]==
* [[Lazy SMP]] (3.0.0)
* [[Iterative Deepening]]
* [[Aspiration Windows]]
* [[Principal Variation Search]] (2.1.0)
* [[Move Ordering]]
: [[History Heuristic]]
: [[Killer Heuristic]]
* [[Selectivity]]
: [[Check Extensions]]
: [[Futility Pruning]]
: [[Reverse Futility Pruning]] (2.1.0)
: [[Null Move Pruning]]
: [[Static Exchange Evaluation|SEE Pruning]]
: [[Late Move Reductions]]
: [[Razoring]]
* [[Quiescence Search]]
==[[Evaluation]]==
* [[Tapered Eval]]
* [[Material]]
: [[Bishop Pair]]
* [[Piece-Square Tables]]
* [[Mobility]]
: [[Rook on Open File|Rook on (half) open file]]
: [[Rook on Seventh|Rook on 7th rank]]
* [[Pawn Structure]]
: [[Pawn Hash Table]]
: [[Doubled Pawn]]
: [[Isolated Pawn]]
: [[Passed Pawn]]
* [[King Safety]]
: [[King Safety#PawnShield|Pawn Shield]]
* [[Texel's Tuning Method]]
==Misc==
* [[PolyGlot]] [[Opening Book|Opening Book Fomat]]
* [[Pondering]]
* [[Syzygy Bases]] using [[Syzygy Bases#Fathom|Fathom]] (2.1.0)
=Forum Posts=
==2004 ...==
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=47529&p=179735 Marvin - new Winboard engine] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], May 09, 2004
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=92&p=207 New version of Marvin] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], September 30, 2004
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=1212&p=5492 Marvin 1.3.0] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], January 01, 2005
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=6515&p=30603 How to run Marvin?] by [[Harm Geert Muller]], [[Computer Chess Forums|Winboard Forum]], May 26, 2007
==2017==
* [http://www.talkchess.com/forum/viewtopic.php?t=63518 Marvin 2.0.0 released] by [[Martin Danielsson]], [[CCC]], March 21, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=64395 Marvin 2.1.0 released] by [[Martin Danielsson]], [[CCC]], June 24, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=65334 Marvin 2.2.0] by [[Martin Danielsson]], [[CCC]], September 30, 2017
==2018==
* [http://www.talkchess.com/forum/viewtopic.php?t=66555 Marvin 3.0.0] by [[Martin Danielsson]], [[CCC]], February 10, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67910 Marvin 3.1.0] by [[Martin Danielsson]], [[CCC]], July 05, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68870 Marvin 3.2.0] by [[Martin Danielsson]], [[CCC]], November 08, 2018
==2019==
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=70428 Marvin 3.3.0] by [[Martin Danielsson]], [[CCC]], April 06, 2019
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=71240 Marvin 3.4.0] by [[Martin Danielsson]], [[CCC]], July 09, 2019
=External Links=
==Chess Engine==
* [https://github.com/bmdanielsson/marvin-chess GitHub - bmdanielsson/marvin-chess: Marvin - An UCI/XBoard compatible chess engine]
* [http://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Marvin&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 Marvin] in [[CCRL|CCRL 40/40]]
==Misc==
* [https://en.wikipedia.org/wiki/Marvin Marvin from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(character) Marvin, the Paranoid Android from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(comic_strip) Marvin (comic strip) from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(name) Marvin (name) from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(robot) Marvin (robot) from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_Gaye Marvin Gaye] - [https://en.wikipedia.org/wiki/Sexual_Healing Sexual Healing] (1982), [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: {{#evu:https://www.youtube.com/watch?v=rjlSiASsUIs|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:Open Source]]
[[Category:GPL]]
[[Category:UCI]]
[[Category:WinBoard]]
[[Category:XBoard]]
[[Category:Comics]]
[[Category:Fiction]]
[[Category:Given Name]]
[[Category:Music]]
'''Marvin''',<br/>
an [[UCI]] and [[Chess Engine Communication Protocol]] compatible chess engine by [[Martin Danielsson]], written in [[C]].
Marvin was originally developed in the early 2000s until 2005, released in May 2004 <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=47529&p=179735 Marvin - new Winboard engine] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], May 09, 2004</ref> and January 2005 <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=1212&p=5492 Marvin 1.3.0] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], January 01, 2005</ref> as closed source engine.
After ten years "out of business", Martin Danielsson restarted the development in 2015 - the completely rewritten Marvin '''2.0.0''' was released as [[:Category:Open Source|open source engine]] under the terms of the [[Free Software Foundation#GPL|GNU General Public License]] (GPL3) in March 2017 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=63518 Marvin 2.0.0 released] by [[Martin Danielsson]], [[CCC]], March 21, 2017</ref>.
=Features=
<ref>[https://github.com/bmdanielsson/marvin-chess GitHub - bmdanielsson/marvin-chess: Marvin - An UCI/XBoard compatible chess engine]</ref>
==[[Board Representation]]==
* [[Bitboards]]
* [[8x8 Board]]
* [[Magic Bitboards#Plain|Plain Magic Bitboards]]
==[[Search]]==
* [[Lazy SMP]] (3.0.0)
* [[Iterative Deepening]]
* [[Aspiration Windows]]
* [[Principal Variation Search]] (2.1.0)
* [[Move Ordering]]
: [[History Heuristic]]
: [[Killer Heuristic]]
* [[Selectivity]]
: [[Check Extensions]]
: [[Futility Pruning]]
: [[Reverse Futility Pruning]] (2.1.0)
: [[Null Move Pruning]]
: [[Static Exchange Evaluation|SEE Pruning]]
: [[Late Move Reductions]]
: [[Razoring]]
* [[Quiescence Search]]
==[[Evaluation]]==
* [[Tapered Eval]]
* [[Material]]
: [[Bishop Pair]]
* [[Piece-Square Tables]]
* [[Mobility]]
: [[Rook on Open File|Rook on (half) open file]]
: [[Rook on Seventh|Rook on 7th rank]]
* [[Pawn Structure]]
: [[Pawn Hash Table]]
: [[Doubled Pawn]]
: [[Isolated Pawn]]
: [[Passed Pawn]]
* [[King Safety]]
: [[King Safety#PawnShield|Pawn Shield]]
* [[Texel's Tuning Method]]
==Misc==
* [[PolyGlot]] [[Opening Book|Opening Book Fomat]]
* [[Pondering]]
* [[Syzygy Bases]] using [[Syzygy Bases#Fathom|Fathom]] (2.1.0)
=Forum Posts=
==2004 ...==
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=47529&p=179735 Marvin - new Winboard engine] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], May 09, 2004
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=92&p=207 New version of Marvin] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], September 30, 2004
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=1212&p=5492 Marvin 1.3.0] by [[Martin Danielsson]], [[Computer Chess Forums|Winboard Forum]], January 01, 2005
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=6515&p=30603 How to run Marvin?] by [[Harm Geert Muller]], [[Computer Chess Forums|Winboard Forum]], May 26, 2007
==2017==
* [http://www.talkchess.com/forum/viewtopic.php?t=63518 Marvin 2.0.0 released] by [[Martin Danielsson]], [[CCC]], March 21, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=64395 Marvin 2.1.0 released] by [[Martin Danielsson]], [[CCC]], June 24, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=65334 Marvin 2.2.0] by [[Martin Danielsson]], [[CCC]], September 30, 2017
==2018==
* [http://www.talkchess.com/forum/viewtopic.php?t=66555 Marvin 3.0.0] by [[Martin Danielsson]], [[CCC]], February 10, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67910 Marvin 3.1.0] by [[Martin Danielsson]], [[CCC]], July 05, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68870 Marvin 3.2.0] by [[Martin Danielsson]], [[CCC]], November 08, 2018
==2019==
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=70428 Marvin 3.3.0] by [[Martin Danielsson]], [[CCC]], April 06, 2019
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=71240 Marvin 3.4.0] by [[Martin Danielsson]], [[CCC]], July 09, 2019
=External Links=
==Chess Engine==
* [https://github.com/bmdanielsson/marvin-chess GitHub - bmdanielsson/marvin-chess: Marvin - An UCI/XBoard compatible chess engine]
* [http://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Marvin&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 Marvin] in [[CCRL|CCRL 40/40]]
==Misc==
* [https://en.wikipedia.org/wiki/Marvin Marvin from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(character) Marvin, the Paranoid Android from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(comic_strip) Marvin (comic strip) from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(name) Marvin (name) from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_(robot) Marvin (robot) from Wikipedia]
* [https://en.wikipedia.org/wiki/Marvin_Gaye Marvin Gaye] - [https://en.wikipedia.org/wiki/Sexual_Healing Sexual Healing] (1982), [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: {{#evu:https://www.youtube.com/watch?v=rjlSiASsUIs|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:Open Source]]
[[Category:GPL]]
[[Category:UCI]]
[[Category:WinBoard]]
[[Category:XBoard]]
[[Category:Comics]]
[[Category:Fiction]]
[[Category:Given Name]]
[[Category:Music]]
