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Created page with "'''Home * Engines * Schooner''' FILE:SchoonerHoekVanHolland.JPG|border|right|thumb|link=https://commons.wikimedia.org/wiki/File:Eendracht_II.JPG| [https:/..."
'''[[Main Page|Home]] * [[Engines]] * Schooner'''
[[FILE:SchoonerHoekVanHolland.JPG|border|right|thumb|link=https://commons.wikimedia.org/wiki/File:Eendracht_II.JPG| [https://en.wikipedia.org/wiki/Schooner Schooner] off [https://en.wikipedia.org/wiki/Hook_of_Holland Hoek van Holland] <ref>The [https://en.wikipedia.org/wiki/Eendracht_(1989_ship) Eendracht] in the [https://en.wikipedia.org/wiki/North_Sea North Sea] on the way to [https://en.wikipedia.org/wiki/Rotterdam Rotterdam], Photo taken from [https://en.wikipedia.org/wiki/Hook_of_Holland Hoek van Holland] beach, July 05, 2017 15:07 [https://en.wikipedia.org/wiki/Central_European_Summer_Time CEST] by [[Gerd Isenberg]], bike tour during [[WCCC 2017]]</ref> ]]
'''Schooner''',<br/>
a [[Chess Engine Communication Protocol]] (CECP) compliant chess engine by [[Dennis Sceviour]] running under [[Windows]]. The hobby project already started in the late 70s <ref>[https://sites.google.com/site/schoonerchess/features Features - Schooner Chess]</ref> and was revived using [[Magic Bitboards]] in 2015.
=Schooner 2=
Schooner '''2''' (Schooner II), released in October 2018 was a complete re-write in [[C]] with a huge performance boost of over 500 [[CCRL|CCRL 40/4]] rating points <ref>[http://www.computerchess.org.uk/ccrl/404/cgi/compare_engines.cgi?family=Schooner&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 Schooner] at [[CCRL|CCRL 40/4]]</ref>.
[[Move Generation#Staged|Staged move generation]] and a simpler [[Evaluation|evaluation]] inspired by [[Xiphos]] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=68842 The Xiphos Material Evaluator] by [[Dennis Sceviour]], [[CCC]], November 05, 2018</ref>,
a lot of [[Engine Testing|testing]] and [[Automated Tuning|tuning]] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68775&start=32 Re: Schooner 2] by [[Dennis Sceviour]], [[CCC]], November 02, 2018</ref>, and
using [https://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC] v7.2.0 were explicitly mentioned as a possible explanation for that improvement <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68775&start=22 Re: Schooner 2] by [[Dennis Sceviour]], [[CCC]], October 31, 2018</ref>
Schooner 2 further supports a subset of [[UCI]] to automatically play games without [[Pondering|pondering]].
=Features=
<ref>[https://sites.google.com/site/schoonerchess/features Features - Schooner Chess]</ref>.
==[[Board Representation]]==
* [[Bitboards]]
* [[Magic Bitboards#Fancy|Fancy Magic Bitboards]]
* [[SSE4]] [[Population Count]]
* [[Move Generation#Staged|Staged Move Generation]] (Schooner 2)
==[[Search]]==
* [[Lazy SMP]] using [[Thread|Threads]] and [[Shared Hash Table]] (Schooner 2)
* [[Iterative Deepening]]
* [[Alpha-Beta]]
* [[Principal Variation Search]]
* [[Transposition Table]]
* Floating [[Reductions]], [[Late Move Reductions|LMR]] and [[Pruning]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=61425 Floating Move Reduction] by [[Dennis Sceviour]], [[CCC]], September 14, 2016</ref>
* [[Internal Iterative Deepening]] (Hash Refutation) <ref>[http://www.talkchess.com/forum/viewtopic.php?t=57374 Hash Refutation] by [[Dennis Sceviour]], [[CCC]], August 24, 2015</ref>
==[[Evaluation]]==
* [[Material]]
* [[Mobility]]
* [[Space]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=61064&start=5 Ee: Calculating space] by [[Dennis Sceviour]], [[CCC]], August 09, 2016</ref>
* [[Pawn Structure]]
: [[Pawn Hash Table]]
* [[King Safety]]
==Misc==
* [[Pondering]]
* [[PolyGlot]] [[Opening Book|Book]] (Schooner 2)
=See also=
* [[Ghost]]
=Forum Posts=
==2015==
* [http://www.talkchess.com/forum/viewtopic.php?t=57311 Schooner Version 1.4] by [[Dennis Sceviour]], [[CCC]], August 19, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=57374 Hash Refutation] by [[Dennis Sceviour]], [[CCC]], August 24, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=57532 Profiling Comparison] by [[Dennis Sceviour]], [[CCC]], September 06, 2015
==2016 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=60135 Schooner Version 1.5] by [[Dennis Sceviour]], [[CCC]], May 11, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=63818 Schooner Version 1.7] by [[Dennis Sceviour]], [[CCC]], April 25, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=66336 Schooner Version 1.8] by [[Dennis Sceviour]], [[CCC]], January 15, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68775 Schooner 2] by [[Dennis Sceviour]], [[CCC]], October 30, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=68810 Schooner's Test Positions] by [[Dennis Sceviour]], [[CCC]], November 02, 2018
=External Links=
==Chess Engine==
* [https://sites.google.com/site/schoonerchess/home Schooner Chess]
* [https://github.com/schooner64-chess/Schooner-Chess GitHub - schooner64-chess/Schooner-Chess: engines and books] (1.4.1)
* [http://www.computerchess.org.uk/ccrl/404/cgi/compare_engines.cgi?family=Schooner&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 Schooner] at [[CCRL|CCRL 40/4]]
==Misc==
* [https://en.wikipedia.org/wiki/Schooner Schooner from Wikipedia]
* [https://en.wikipedia.org/wiki/Schooner_(disambiguation) Schooner (disambiguation) from Wikipedia]
* [https://en.wiktionary.org/wiki/schooner schooner - Wiktionary]
* [http://www.maineschooners.com/ Schooner Olad]: first sail of 2013 out of [https://en.wikipedia.org/wiki/Camden,_Maine Camden] Harbor, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: Music: [https://en.wikipedia.org/wiki/Crosby,_Stills,_Nash_%26_Young Crosby, Stills & Nash] - [https://en.wikipedia.org/wiki/Wooden_Ships Wooden Ships]
: {{#evu:https://www.youtube.com/watch?v=wPZV84KlhkU|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:WinBoard]]
[[Category:Ship]]
[[FILE:SchoonerHoekVanHolland.JPG|border|right|thumb|link=https://commons.wikimedia.org/wiki/File:Eendracht_II.JPG| [https://en.wikipedia.org/wiki/Schooner Schooner] off [https://en.wikipedia.org/wiki/Hook_of_Holland Hoek van Holland] <ref>The [https://en.wikipedia.org/wiki/Eendracht_(1989_ship) Eendracht] in the [https://en.wikipedia.org/wiki/North_Sea North Sea] on the way to [https://en.wikipedia.org/wiki/Rotterdam Rotterdam], Photo taken from [https://en.wikipedia.org/wiki/Hook_of_Holland Hoek van Holland] beach, July 05, 2017 15:07 [https://en.wikipedia.org/wiki/Central_European_Summer_Time CEST] by [[Gerd Isenberg]], bike tour during [[WCCC 2017]]</ref> ]]
'''Schooner''',<br/>
a [[Chess Engine Communication Protocol]] (CECP) compliant chess engine by [[Dennis Sceviour]] running under [[Windows]]. The hobby project already started in the late 70s <ref>[https://sites.google.com/site/schoonerchess/features Features - Schooner Chess]</ref> and was revived using [[Magic Bitboards]] in 2015.
=Schooner 2=
Schooner '''2''' (Schooner II), released in October 2018 was a complete re-write in [[C]] with a huge performance boost of over 500 [[CCRL|CCRL 40/4]] rating points <ref>[http://www.computerchess.org.uk/ccrl/404/cgi/compare_engines.cgi?family=Schooner&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 Schooner] at [[CCRL|CCRL 40/4]]</ref>.
[[Move Generation#Staged|Staged move generation]] and a simpler [[Evaluation|evaluation]] inspired by [[Xiphos]] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=68842 The Xiphos Material Evaluator] by [[Dennis Sceviour]], [[CCC]], November 05, 2018</ref>,
a lot of [[Engine Testing|testing]] and [[Automated Tuning|tuning]] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68775&start=32 Re: Schooner 2] by [[Dennis Sceviour]], [[CCC]], November 02, 2018</ref>, and
using [https://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC] v7.2.0 were explicitly mentioned as a possible explanation for that improvement <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68775&start=22 Re: Schooner 2] by [[Dennis Sceviour]], [[CCC]], October 31, 2018</ref>
Schooner 2 further supports a subset of [[UCI]] to automatically play games without [[Pondering|pondering]].
=Features=
<ref>[https://sites.google.com/site/schoonerchess/features Features - Schooner Chess]</ref>.
==[[Board Representation]]==
* [[Bitboards]]
* [[Magic Bitboards#Fancy|Fancy Magic Bitboards]]
* [[SSE4]] [[Population Count]]
* [[Move Generation#Staged|Staged Move Generation]] (Schooner 2)
==[[Search]]==
* [[Lazy SMP]] using [[Thread|Threads]] and [[Shared Hash Table]] (Schooner 2)
* [[Iterative Deepening]]
* [[Alpha-Beta]]
* [[Principal Variation Search]]
* [[Transposition Table]]
* Floating [[Reductions]], [[Late Move Reductions|LMR]] and [[Pruning]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=61425 Floating Move Reduction] by [[Dennis Sceviour]], [[CCC]], September 14, 2016</ref>
* [[Internal Iterative Deepening]] (Hash Refutation) <ref>[http://www.talkchess.com/forum/viewtopic.php?t=57374 Hash Refutation] by [[Dennis Sceviour]], [[CCC]], August 24, 2015</ref>
==[[Evaluation]]==
* [[Material]]
* [[Mobility]]
* [[Space]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=61064&start=5 Ee: Calculating space] by [[Dennis Sceviour]], [[CCC]], August 09, 2016</ref>
* [[Pawn Structure]]
: [[Pawn Hash Table]]
* [[King Safety]]
==Misc==
* [[Pondering]]
* [[PolyGlot]] [[Opening Book|Book]] (Schooner 2)
=See also=
* [[Ghost]]
=Forum Posts=
==2015==
* [http://www.talkchess.com/forum/viewtopic.php?t=57311 Schooner Version 1.4] by [[Dennis Sceviour]], [[CCC]], August 19, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=57374 Hash Refutation] by [[Dennis Sceviour]], [[CCC]], August 24, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=57532 Profiling Comparison] by [[Dennis Sceviour]], [[CCC]], September 06, 2015
==2016 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=60135 Schooner Version 1.5] by [[Dennis Sceviour]], [[CCC]], May 11, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=63818 Schooner Version 1.7] by [[Dennis Sceviour]], [[CCC]], April 25, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=66336 Schooner Version 1.8] by [[Dennis Sceviour]], [[CCC]], January 15, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68775 Schooner 2] by [[Dennis Sceviour]], [[CCC]], October 30, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=68810 Schooner's Test Positions] by [[Dennis Sceviour]], [[CCC]], November 02, 2018
=External Links=
==Chess Engine==
* [https://sites.google.com/site/schoonerchess/home Schooner Chess]
* [https://github.com/schooner64-chess/Schooner-Chess GitHub - schooner64-chess/Schooner-Chess: engines and books] (1.4.1)
* [http://www.computerchess.org.uk/ccrl/404/cgi/compare_engines.cgi?family=Schooner&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 Schooner] at [[CCRL|CCRL 40/4]]
==Misc==
* [https://en.wikipedia.org/wiki/Schooner Schooner from Wikipedia]
* [https://en.wikipedia.org/wiki/Schooner_(disambiguation) Schooner (disambiguation) from Wikipedia]
* [https://en.wiktionary.org/wiki/schooner schooner - Wiktionary]
* [http://www.maineschooners.com/ Schooner Olad]: first sail of 2013 out of [https://en.wikipedia.org/wiki/Camden,_Maine Camden] Harbor, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: Music: [https://en.wikipedia.org/wiki/Crosby,_Stills,_Nash_%26_Young Crosby, Stills & Nash] - [https://en.wikipedia.org/wiki/Wooden_Ships Wooden Ships]
: {{#evu:https://www.youtube.com/watch?v=wPZV84KlhkU|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:WinBoard]]
[[Category:Ship]]
