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'''[[Main Page|Home]] * [[Engines]] * Clarabit'''
'''Clarabit''',<br/>
a [[Chess Engine Communication Protocol]] and [[UCI]] compatible chess engine by [[Salvador Pallares Bejarano]],
dedicated to his daughter Clara <ref>[http://sites.google.com/site/sapabe/ Clarabit Chess Engine]</ref>.
Clarabit executables are provided to run under [[Linux]] and [[Windows]], 32 as well as 64 bit versions.
=Features=
Clarabit is [[Bitboards|Bitboard]] based and applies [[Magic Bitboards|Magic bitboards]],
as acknowledged to [[Pradu Kannan]] in the Readme.txt file <ref>[http://sites.google.com/site/sapabe/downloads Clarabit Chess Engine - downloads]</ref>.
==Search==
Clarabit's [[Search|search]] performs and uses <ref>[http://sites.google.com/site/sapabe/technicalinfo Clarabit Chess Engine - Technical Info]</ref>:
* [[Principal Variation Search]]
* [[Quiescence Search|Limited Quiescence Search]]
* [[Static Exchange Evaluation]] and [[MVV-LVA]]
* [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]]
* [[Transposition Table]]
* [[History Heuristic]]
* [[Killer Move|Killers]] and [[Mate Killers]]
* [[Check Extensions]]
* [[Late Move Reductions]]
==Evaluation==
Clarabit's [[Evaluation|evaluation]] is based on:
* [[Material]]
* [[Mobility]] (Attack Bitboards)
* [[Piece-Square Tables]]
* [[Evaluation of Pieces|Piece Type Positional Knowledge]]
* [[Pawn Structure]]
** [[Pawn Hash Table]]
** [[Doubled Pawn]]
** [[Backward Pawn]]
** [[Isolated Pawn]]
** [[Passed Pawn]]
** [[Candidate Passed Pawn]]
* [[King Safety]]
* Specific [[Endgame]] Knowledge
=External Links=
==Chess Engine==
* [http://sites.google.com/site/sapabe/ Clarabit Chess Engine]
* [https://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Clarabit&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 Clarabit] in [[CCRL|CCRL 40/15]]
==Misc==
* [https://en.wiktionary.org/wiki/clarabit clarabit - Wiktionary]
* [https://en.wikipedia.org/wiki/Clara Clara from Wikipedia]
* [https://en.wikipedia.org/wiki/Clara_(given_name) Clara (given name) from Wikipedia]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:UCI]]
[[Category:WinBoard]]
[[Category:XBoard]]
[[Category:X86]]
[[Category:X64]]
[[Category:PC]]
[[Category:Linux]]
[[Category:Windows]]
[[Category:Given Name]]
'''Clarabit''',<br/>
a [[Chess Engine Communication Protocol]] and [[UCI]] compatible chess engine by [[Salvador Pallares Bejarano]],
dedicated to his daughter Clara <ref>[http://sites.google.com/site/sapabe/ Clarabit Chess Engine]</ref>.
Clarabit executables are provided to run under [[Linux]] and [[Windows]], 32 as well as 64 bit versions.
=Features=
Clarabit is [[Bitboards|Bitboard]] based and applies [[Magic Bitboards|Magic bitboards]],
as acknowledged to [[Pradu Kannan]] in the Readme.txt file <ref>[http://sites.google.com/site/sapabe/downloads Clarabit Chess Engine - downloads]</ref>.
==Search==
Clarabit's [[Search|search]] performs and uses <ref>[http://sites.google.com/site/sapabe/technicalinfo Clarabit Chess Engine - Technical Info]</ref>:
* [[Principal Variation Search]]
* [[Quiescence Search|Limited Quiescence Search]]
* [[Static Exchange Evaluation]] and [[MVV-LVA]]
* [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]]
* [[Transposition Table]]
* [[History Heuristic]]
* [[Killer Move|Killers]] and [[Mate Killers]]
* [[Check Extensions]]
* [[Late Move Reductions]]
==Evaluation==
Clarabit's [[Evaluation|evaluation]] is based on:
* [[Material]]
* [[Mobility]] (Attack Bitboards)
* [[Piece-Square Tables]]
* [[Evaluation of Pieces|Piece Type Positional Knowledge]]
* [[Pawn Structure]]
** [[Pawn Hash Table]]
** [[Doubled Pawn]]
** [[Backward Pawn]]
** [[Isolated Pawn]]
** [[Passed Pawn]]
** [[Candidate Passed Pawn]]
* [[King Safety]]
* Specific [[Endgame]] Knowledge
=External Links=
==Chess Engine==
* [http://sites.google.com/site/sapabe/ Clarabit Chess Engine]
* [https://ccrl.chessdom.com/ccrl/4040/cgi/compare_engines.cgi?family=Clarabit&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 Clarabit] in [[CCRL|CCRL 40/15]]
==Misc==
* [https://en.wiktionary.org/wiki/clarabit clarabit - Wiktionary]
* [https://en.wikipedia.org/wiki/Clara Clara from Wikipedia]
* [https://en.wikipedia.org/wiki/Clara_(given_name) Clara (given name) from Wikipedia]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:UCI]]
[[Category:WinBoard]]
[[Category:XBoard]]
[[Category:X86]]
[[Category:X64]]
[[Category:PC]]
[[Category:Linux]]
[[Category:Windows]]
[[Category:Given Name]]
