25,161
edits
Changes
Created page with "'''Home * Engines * Defenchess''' '''Defenchess''',<br/> an UCI compliant open source chess engine by Can Cetin and Dog..."
'''[[Main Page|Home]] * [[Engines]] * Defenchess'''
'''Defenchess''',<br/>
an [[UCI]] compliant [[:Category:Open Source|open source chess engine]] by [[Can Cetin]] and [[Dogac Eldenk]], written in [[Cpp|C++]], licensed under the [[Free Software Foundation#GPL|GPL v3.0]].
Defenchess evolved from the author's former engine ''SCTR'' <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=65861&start=13 Re: SCTR 1.1d win64] by CMCanavessi, [[CCC]], January 03, 2018</ref>, and had its tournament debut at [[TCEC Season 11]] in 2018, where it won the [[TCEC Season 11#Fourth|Fourth Division]] <ref>[http://www.chessdom.com/defenchess-wins-tcec-division-4/ Defenchess wins TCEC Division 4], [[Chessdom]], January 06, 2018</ref>.
=Features=
<ref>[https://github.com/gonzaloarro/MORA-CHESS-ENGINE GitHub - gonzaloarro/MORA-CHESS-ENGINE: UCI Chess Engine in the 2100-2200 ELO range - README.md]</ref>
==[[Board Representation]]==
* [[8x8 Board]]
* [[Bitboard Board-Definition#CBoardDef|Bitboard Board-Definition]]
* [[Magic Bitboards#Plain|Plain Magic Bitboards]]
==[[Search]]==
* [[Lazy SMP]]
* [[Iterative Deepening]]
* [[Alpha-Beta]]
* [[Principal Variation Search]]
* [[Transposition Table]]
* [[Selectivity]]
** [[Null Move Pruning]]
** [[ProbCut]]
** [[Static Exchange Evaluation|SEE Pruning]]
** [[Late Move Reductions]]
** [[Futility Pruning]]
** [[Razoring]]
** [[Check Extensions]] if [[Static Exchange Evaluation|SEE]] >= 0
** [[Singular Extensions#RestrictedSE|Restricted Singular Extensions]]
** [[Quiescence Search]]
* [[Move Ordering]]
** [[PV-Move]]
** [[Countermove Heuristic]]
** [[History Heuristic]]
** [[Killer Heuristic]]
** [[Captures]] by [[MVV-LVA|MVV/LVA]]
** [[Captures]] by [[Static Exchange Evaluation]]
==[[Evaluation]]==
* [[Tapered Eval]]
* [[Material]]
* [[Mobility]]
** [[Bad Bishop]]
** [[Rook on Open File|Rooks on (Semi) Open Files]]
* [[Pawn Structure]]
** [[Pawn Hash Table]]
** [[Isolated Pawn|Isolated Pawns]]
** [[Doubled Pawn|Doubled Pawns]]
** [[Backward Pawn|Backward Pawns]]
** [[Passed Pawn|Passed Pawns]]
* [[King Safety]]
** [[King Safety#PawnShield|Pawn Shelter]]
** [[King Safety#PawnStorm|Pawn Storms]]
** [[King Safety#Attacking|Enemy Attacks]]
* [[Tempo#Tempo Bonus|Tempo Bonus]]
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=65844 Lazy SMP >4 Thread Slowdown] by [[Can Cetin]], [[CCC]], November 29, 2017
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=66044&start=10 Re: Parallel search/LazySMP question] by [[Can Cetin]], [[CCC]], December 18, 2017
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=65861&start=13 Re: SCTR 1.1d win64] by CMCanavessi, [[CCC]], January 03, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67602&p=763874 Official Release of Ethereal 10.00 (Two-years Anniversary)] by [[Andrew Grant]], [[CCC]], May 30, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67994&start=20 Re: TCEC should reconsider the ban on Ethereal] by [[Andrew Grant]], [[CCC]], July 18, 2018
=External Links=
* [https://github.com/cetincan0/Defenchess GitHub - cetincan0/Defenchess: Chess Engine]
* [https://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Defenchess&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 Defenchess] in [[CCRL|CCRL 40/40]]
* [http://www.chessdom.com/defenchess-wins-tcec-division-4/ Defenchess wins TCEC Division 4], [[Chessdom]], January 06, 2018 » [[TCEC Season 11]]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Open Source]]
[[Category:GPL]]
[[Category:UCI]]
[[Category:Chess Suffix]]
'''Defenchess''',<br/>
an [[UCI]] compliant [[:Category:Open Source|open source chess engine]] by [[Can Cetin]] and [[Dogac Eldenk]], written in [[Cpp|C++]], licensed under the [[Free Software Foundation#GPL|GPL v3.0]].
Defenchess evolved from the author's former engine ''SCTR'' <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=65861&start=13 Re: SCTR 1.1d win64] by CMCanavessi, [[CCC]], January 03, 2018</ref>, and had its tournament debut at [[TCEC Season 11]] in 2018, where it won the [[TCEC Season 11#Fourth|Fourth Division]] <ref>[http://www.chessdom.com/defenchess-wins-tcec-division-4/ Defenchess wins TCEC Division 4], [[Chessdom]], January 06, 2018</ref>.
=Features=
<ref>[https://github.com/gonzaloarro/MORA-CHESS-ENGINE GitHub - gonzaloarro/MORA-CHESS-ENGINE: UCI Chess Engine in the 2100-2200 ELO range - README.md]</ref>
==[[Board Representation]]==
* [[8x8 Board]]
* [[Bitboard Board-Definition#CBoardDef|Bitboard Board-Definition]]
* [[Magic Bitboards#Plain|Plain Magic Bitboards]]
==[[Search]]==
* [[Lazy SMP]]
* [[Iterative Deepening]]
* [[Alpha-Beta]]
* [[Principal Variation Search]]
* [[Transposition Table]]
* [[Selectivity]]
** [[Null Move Pruning]]
** [[ProbCut]]
** [[Static Exchange Evaluation|SEE Pruning]]
** [[Late Move Reductions]]
** [[Futility Pruning]]
** [[Razoring]]
** [[Check Extensions]] if [[Static Exchange Evaluation|SEE]] >= 0
** [[Singular Extensions#RestrictedSE|Restricted Singular Extensions]]
** [[Quiescence Search]]
* [[Move Ordering]]
** [[PV-Move]]
** [[Countermove Heuristic]]
** [[History Heuristic]]
** [[Killer Heuristic]]
** [[Captures]] by [[MVV-LVA|MVV/LVA]]
** [[Captures]] by [[Static Exchange Evaluation]]
==[[Evaluation]]==
* [[Tapered Eval]]
* [[Material]]
* [[Mobility]]
** [[Bad Bishop]]
** [[Rook on Open File|Rooks on (Semi) Open Files]]
* [[Pawn Structure]]
** [[Pawn Hash Table]]
** [[Isolated Pawn|Isolated Pawns]]
** [[Doubled Pawn|Doubled Pawns]]
** [[Backward Pawn|Backward Pawns]]
** [[Passed Pawn|Passed Pawns]]
* [[King Safety]]
** [[King Safety#PawnShield|Pawn Shelter]]
** [[King Safety#PawnStorm|Pawn Storms]]
** [[King Safety#Attacking|Enemy Attacks]]
* [[Tempo#Tempo Bonus|Tempo Bonus]]
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=65844 Lazy SMP >4 Thread Slowdown] by [[Can Cetin]], [[CCC]], November 29, 2017
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=66044&start=10 Re: Parallel search/LazySMP question] by [[Can Cetin]], [[CCC]], December 18, 2017
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=65861&start=13 Re: SCTR 1.1d win64] by CMCanavessi, [[CCC]], January 03, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67602&p=763874 Official Release of Ethereal 10.00 (Two-years Anniversary)] by [[Andrew Grant]], [[CCC]], May 30, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67994&start=20 Re: TCEC should reconsider the ban on Ethereal] by [[Andrew Grant]], [[CCC]], July 18, 2018
=External Links=
* [https://github.com/cetincan0/Defenchess GitHub - cetincan0/Defenchess: Chess Engine]
* [https://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Defenchess&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 Defenchess] in [[CCRL|CCRL 40/40]]
* [http://www.chessdom.com/defenchess-wins-tcec-division-4/ Defenchess wins TCEC Division 4], [[Chessdom]], January 06, 2018 » [[TCEC Season 11]]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Open Source]]
[[Category:GPL]]
[[Category:UCI]]
[[Category:Chess Suffix]]
