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Created page with "'''Home * Engines * Chesley''' FILE:Joe Biden & Chesley Sullenberger (49537249927).jpg|border|right|thumb| [https://en.wikipedia.org/wiki/Joe_Biden Joe Bi..."
'''[[Main Page|Home]] * [[Engines]] * Chesley'''
[[FILE:Joe Biden & Chesley Sullenberger (49537249927).jpg|border|right|thumb| [https://en.wikipedia.org/wiki/Joe_Biden Joe Biden] & [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley Sullenberger] <ref>Former [https://en.wikipedia.org/wiki/Vice_president Vice President] of the [https://en.wikipedia.org/wiki/United_States United States] [https://en.wikipedia.org/wiki/Joe_Biden Joe Biden] and [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley "Sully" Sullenberger] speaking with supporters at a community event at [https://scmronline.com/ Sun City MacDonald Ranch] in [https://en.wikipedia.org/wiki/Henderson,_Nevada Henderson, Nevada], February 14, 2020, [https://commons.wikimedia.org/wiki/File:Joe_Biden_%26_Chesley_Sullenberger_(49537249927).jpg Photo] by [https://www.flickr.com/people/22007612@N05 Gage Skidmore] from [https://en.wikipedia.org/wiki/Surprise,_Arizona Surprise, Arizona], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Chesley''',<br/>
a [[Chess Engine Communication Protocol]] compatible [[:Category:Open Source|open source chess engine]] by [[Matt Gingell]], written in [[Cpp|C++]], licensed under the [[Free Software Foundation#GPL|GPL 2.0]],
targeting [[Windows]], [[Linux]] and [[Mac OS]], first released to the public in May 2009 <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=28195 Chesley the Chess Engine!" released publicly] by [[Matt Gingell]], [[CCC]], May 31, 2009</ref>.
The chess engine takes its name from [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley B. “Sully” Sullenberger],
the pilot who [https://en.wikipedia.org/wiki/US_Airways_Flight_1549 successfully landed an airplane] on the [https://en.wikipedia.org/wiki/Hudson_River Hudson river] around the time Matt was getting started <ref>chessley-1.1.2/README</ref>.
=Features=
==[[Board Representation]]==
* [[Bitboards]]
* [[Rotated Bitboards]]
==[[Search]]==
* [[Iterative Deepening]]
* [[Aspiration Windows]]
* [[Principal Variation Search]]
* [[Transposition Table]]
* [[Move Ordering]]
** [[Hash Move]]
** [[Killer Heuristic]]
*** [[Mate Killers]]
*** [[Killer Move|Killer Moves]]
** [[Static Exchange Evaluation]]
** [[History Heuristic]]
* [[Selectivity]]
** [[Extensions]]
*** [[Check Extensions]]
*** [[Recapture Extensions]]
*** [[Passed Pawn Extensions|Passed Pawn Extensions]]
** [[Pruning]]
*** [[Mate Distance Pruning]]
*** [[Null Move Pruning|Null Move Heuristic]]
*** [[Futility Pruning]]
*** [[Futility Pruning#Extendedfutilitypruning|Extended Futility Pruning]]
** [[Reductions]]
*** [[Late Move Reductions]]
*** [[Razoring]]
** [[Quiescence Search]]
==[[Evaluation]]==
* [[Material]]
* [[Piece-Square Tables]]
* [[Mobility]]
* [[Evaluation of Pieces]]
** [[Outposts|Knight Outposts]]
** [[Trapped Pieces|Trapped Bishop]]
** [[Rook on Open File|Rook and Queen on (Semi) Open Files]]
** [[Rook on Seventh]]
* [[Pawn Structure]]
** [[Backward Pawns (Bitboards)|Backward Pawns]]
** [[Doubled Pawn|Doubled Pawns]]
** [[Isolated Pawn|Isolated Pawn]]
** [[Passed Pawn|Passed Pawns]]
* [[King]]
** [[Piece-Square Tables|King-Square Tables]] for [[Opening]], [[Middlegame]] and [[Endgame]]
** [[King Safety]]
*** [[Castling Rights]]
*** [[King Safety#PawnShield|Pawn Shield]] in [[Opening]] and [[Middlegame]]
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=28195 Chesley the Chess Engine!" released publicly] by [[Matt Gingell]], [[CCC]], May 31, 2009
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=29132 Chesley r241 JA windows build available] by [[Jim Ablett]], [[CCC]], July 28, 2009
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=29813 Chesley 1.1.2 released] by [[Matt Gingell]], [[CCC]], September 19, 2009
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=36464 Chesley engine] by Mark Loftus, [[CCC]], October 23, 2010
=External Links=
==Chess Engine==
* [https://sourceforge.net/projects/chesley/ Chesley the Chess Engine! download | SourceForge.net]
* [http://kirr.homeunix.org/chess/engines/Jim%20Ablett/CHESLEY/ Index of /chess/engines/Jim Ablett/CHESLEY] by [[Jim Ablett]], hosted by [[Kirill Kryukov]]
* [http://julien.marcel.free.fr/macchess/Chess_on_Mac/Engines.html Mac Chess Engines Repository] hosted by [[Julien Marcel]]
* [http://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Chesley&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 Chesley] in [[CCRL|CCRL 40/15]]
==Misc==
* [https://en.wikipedia.org/wiki/Chesley Chesley from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_(name) Chesley (name) from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_Bonestell Chesley Bonestell from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_Awards Chesley Awards from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley B. “Sully” Sullenberger from Wikipedia]
* [https://en.wikipedia.org/wiki/List_of_minor_planets:_12001%E2%80%9313000#104 12104 Chesley from Wikipedia]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:WinBoard]]
[[Category:XBoard]]
[[Category:X86]]
[[Category:X64]]
[[Category:PC]]
[[Category:Linux]]
[[Category:Mac]]
[[Category:Windows]]
[[Category:Astronomy]]
[[Category:Given Name]]
[[FILE:Joe Biden & Chesley Sullenberger (49537249927).jpg|border|right|thumb| [https://en.wikipedia.org/wiki/Joe_Biden Joe Biden] & [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley Sullenberger] <ref>Former [https://en.wikipedia.org/wiki/Vice_president Vice President] of the [https://en.wikipedia.org/wiki/United_States United States] [https://en.wikipedia.org/wiki/Joe_Biden Joe Biden] and [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley "Sully" Sullenberger] speaking with supporters at a community event at [https://scmronline.com/ Sun City MacDonald Ranch] in [https://en.wikipedia.org/wiki/Henderson,_Nevada Henderson, Nevada], February 14, 2020, [https://commons.wikimedia.org/wiki/File:Joe_Biden_%26_Chesley_Sullenberger_(49537249927).jpg Photo] by [https://www.flickr.com/people/22007612@N05 Gage Skidmore] from [https://en.wikipedia.org/wiki/Surprise,_Arizona Surprise, Arizona], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Chesley''',<br/>
a [[Chess Engine Communication Protocol]] compatible [[:Category:Open Source|open source chess engine]] by [[Matt Gingell]], written in [[Cpp|C++]], licensed under the [[Free Software Foundation#GPL|GPL 2.0]],
targeting [[Windows]], [[Linux]] and [[Mac OS]], first released to the public in May 2009 <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=28195 Chesley the Chess Engine!" released publicly] by [[Matt Gingell]], [[CCC]], May 31, 2009</ref>.
The chess engine takes its name from [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley B. “Sully” Sullenberger],
the pilot who [https://en.wikipedia.org/wiki/US_Airways_Flight_1549 successfully landed an airplane] on the [https://en.wikipedia.org/wiki/Hudson_River Hudson river] around the time Matt was getting started <ref>chessley-1.1.2/README</ref>.
=Features=
==[[Board Representation]]==
* [[Bitboards]]
* [[Rotated Bitboards]]
==[[Search]]==
* [[Iterative Deepening]]
* [[Aspiration Windows]]
* [[Principal Variation Search]]
* [[Transposition Table]]
* [[Move Ordering]]
** [[Hash Move]]
** [[Killer Heuristic]]
*** [[Mate Killers]]
*** [[Killer Move|Killer Moves]]
** [[Static Exchange Evaluation]]
** [[History Heuristic]]
* [[Selectivity]]
** [[Extensions]]
*** [[Check Extensions]]
*** [[Recapture Extensions]]
*** [[Passed Pawn Extensions|Passed Pawn Extensions]]
** [[Pruning]]
*** [[Mate Distance Pruning]]
*** [[Null Move Pruning|Null Move Heuristic]]
*** [[Futility Pruning]]
*** [[Futility Pruning#Extendedfutilitypruning|Extended Futility Pruning]]
** [[Reductions]]
*** [[Late Move Reductions]]
*** [[Razoring]]
** [[Quiescence Search]]
==[[Evaluation]]==
* [[Material]]
* [[Piece-Square Tables]]
* [[Mobility]]
* [[Evaluation of Pieces]]
** [[Outposts|Knight Outposts]]
** [[Trapped Pieces|Trapped Bishop]]
** [[Rook on Open File|Rook and Queen on (Semi) Open Files]]
** [[Rook on Seventh]]
* [[Pawn Structure]]
** [[Backward Pawns (Bitboards)|Backward Pawns]]
** [[Doubled Pawn|Doubled Pawns]]
** [[Isolated Pawn|Isolated Pawn]]
** [[Passed Pawn|Passed Pawns]]
* [[King]]
** [[Piece-Square Tables|King-Square Tables]] for [[Opening]], [[Middlegame]] and [[Endgame]]
** [[King Safety]]
*** [[Castling Rights]]
*** [[King Safety#PawnShield|Pawn Shield]] in [[Opening]] and [[Middlegame]]
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=28195 Chesley the Chess Engine!" released publicly] by [[Matt Gingell]], [[CCC]], May 31, 2009
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=29132 Chesley r241 JA windows build available] by [[Jim Ablett]], [[CCC]], July 28, 2009
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=29813 Chesley 1.1.2 released] by [[Matt Gingell]], [[CCC]], September 19, 2009
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=36464 Chesley engine] by Mark Loftus, [[CCC]], October 23, 2010
=External Links=
==Chess Engine==
* [https://sourceforge.net/projects/chesley/ Chesley the Chess Engine! download | SourceForge.net]
* [http://kirr.homeunix.org/chess/engines/Jim%20Ablett/CHESLEY/ Index of /chess/engines/Jim Ablett/CHESLEY] by [[Jim Ablett]], hosted by [[Kirill Kryukov]]
* [http://julien.marcel.free.fr/macchess/Chess_on_Mac/Engines.html Mac Chess Engines Repository] hosted by [[Julien Marcel]]
* [http://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Chesley&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 Chesley] in [[CCRL|CCRL 40/15]]
==Misc==
* [https://en.wikipedia.org/wiki/Chesley Chesley from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_(name) Chesley (name) from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_Bonestell Chesley Bonestell from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_Awards Chesley Awards from Wikipedia]
* [https://en.wikipedia.org/wiki/Chesley_Sullenberger Chesley B. “Sully” Sullenberger from Wikipedia]
* [https://en.wikipedia.org/wiki/List_of_minor_planets:_12001%E2%80%9313000#104 12104 Chesley from Wikipedia]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:WinBoard]]
[[Category:XBoard]]
[[Category:X86]]
[[Category:X64]]
[[Category:PC]]
[[Category:Linux]]
[[Category:Mac]]
[[Category:Windows]]
[[Category:Astronomy]]
[[Category:Given Name]]
