Difference between revisions of "ROCE"
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'''ROCE''', (Roman's Own Chess Engine)<br/> | '''ROCE''', (Roman's Own Chess Engine)<br/> | ||
| − | an [[UCI]] compliant chess engine by [[Roman Hartmann]], written in [[C]] | + | an [[UCI]] compliant chess engine by [[Roman Hartmann]], written in [[C]] - development started in late 2003. |
ROCE played the [[WCRCC 2007]] and the [[WCRCC 2008]] respectively, and became a reference engine for [[Perft]] and [[Perft#Divide|Divide]] | ROCE played the [[WCRCC 2007]] and the [[WCRCC 2008]] respectively, and became a reference engine for [[Perft]] and [[Perft#Divide|Divide]] | ||
<ref>[http://www.rocechess.ch/perft.html A few informations regarding perft/divide]</ref>. | <ref>[http://www.rocechess.ch/perft.html A few informations regarding perft/divide]</ref>. | ||
| Line 8: | Line 8: | ||
=Description= | =Description= | ||
Roce's [[Board Representation|board is represented]] by a [[10x12 Board|10x12 board]] and a [[Piece-Lists|piece list]], [[Incremental Updates|incrementally updated]] during [[Make Move|make move]], | Roce's [[Board Representation|board is represented]] by a [[10x12 Board|10x12 board]] and a [[Piece-Lists|piece list]], [[Incremental Updates|incrementally updated]] during [[Make Move|make move]], | ||
| − | which is also applied to the [[Evaluation|evaluation]] [[Score|score]]. It [[Move Generation#Legal| | + | which is also applied to the [[Evaluation|evaluation]] [[Score|score]]. It initially [[Move Generation#Legal|generated legal moves]] only, and switched to [[Move Generation#PseudoLegal|pseudo legal]] later <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=35586&start=5 Re: Legal or Pseudo-Legal Move generation] by [[Roman Hartmann]], [[CCC]], July 27, 2010</ref>. |
Plain [[Alpha-Beta|alpha-beta]] is realized in [[Negamax|negamax]] manner with [[Beta-Cutoff|Beta-cutoffs]], and performs [[Null Move Pruning|null move pruning]] with [[Depth Reduction R|R=2]] and [[Null Move Pruning#ZugzwangVerification|verification search]], | Plain [[Alpha-Beta|alpha-beta]] is realized in [[Negamax|negamax]] manner with [[Beta-Cutoff|Beta-cutoffs]], and performs [[Null Move Pruning|null move pruning]] with [[Depth Reduction R|R=2]] and [[Null Move Pruning#ZugzwangVerification|verification search]], | ||
and a [[Quiescence Search|quiescence search]] considering [[MVV-LVA|MVV/LVA]] to [[Move Ordering|order moves]] <ref>Description based on [http://www.rocechess.ch/rocee.html ROCE - Roman's Own Chess Engine - A few technical details]</ref>. | and a [[Quiescence Search|quiescence search]] considering [[MVV-LVA|MVV/LVA]] to [[Move Ordering|order moves]] <ref>Description based on [http://www.rocechess.ch/rocee.html ROCE - Roman's Own Chess Engine - A few technical details]</ref>. | ||
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* [http://www.talkchess.com/forum/viewtopic.php?t=21919 WCRCC-Report] by [[Roman Hartmann]], [[CCC]], June 23, 2008 » [[WCRCC 2008]] | * [http://www.talkchess.com/forum/viewtopic.php?t=21919 WCRCC-Report] by [[Roman Hartmann]], [[CCC]], June 23, 2008 » [[WCRCC 2008]] | ||
* [http://www.talkchess.com/forum3/viewtopic.php?f=6&t=35439 STS <nowiki>[1-10]</nowiki> Roce 0.0380] by [[Swaminathan Natarajan]], July 15, 2010 » [[Strategic Test Suite]] | * [http://www.talkchess.com/forum3/viewtopic.php?f=6&t=35439 STS <nowiki>[1-10]</nowiki> Roce 0.0380] by [[Swaminathan Natarajan]], July 15, 2010 » [[Strategic Test Suite]] | ||
| + | * [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=35586&start=5 Re: Legal or Pseudo-Legal Move generation] by [[Roman Hartmann]], [[CCC]], July 27, 2010 | ||
| + | * [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=36411&start=12 Re: Question regarding WAC number 2] by [[Roman Hartmann]], [[CCC]], October 19, 2010 » [[Win at Chess]] | ||
| + | * [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=48502&start=1 Re: Chess960 / FRC on ICS] by [[Roman Hartmann]], [[CCC]], July 01, 2013 » [[Chess960]] | ||
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=52965 perft/divide bug in roce38 and Sharper? [SOLVED]] by thedrunkard, [[Computer Chess Forums|Winboard Forum]], October 16, 2013 » [[Perft]], [[Sharper]] | * [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=52965 perft/divide bug in roce38 and Sharper? [SOLVED]] by thedrunkard, [[Computer Chess Forums|Winboard Forum]], October 16, 2013 » [[Perft]], [[Sharper]] | ||
| + | * [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=57235&start=21 Re: Worst advice] by [[Roman Hartmann]], [[CCC]], August 11, 2015 » [[Aspiration Windows]] | ||
=External Links= | =External Links= | ||
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'''[[Engines|Up one level]]''' | '''[[Engines|Up one level]]''' | ||
[[Category:UCI]] | [[Category:UCI]] | ||
| + | [[Category:Chess960]] | ||
[[Category:PC]] | [[Category:PC]] | ||
[[Category:X86]] | [[Category:X86]] | ||
Latest revision as of 16:07, 22 November 2020
ROCE, (Roman's Own Chess Engine)
an UCI compliant chess engine by Roman Hartmann, written in C - development started in late 2003.
ROCE played the WCRCC 2007 and the WCRCC 2008 respectively, and became a reference engine for Perft and Divide
[1].
Contents
Description
Roce's board is represented by a 10x12 board and a piece list, incrementally updated during make move, which is also applied to the evaluation score. It initially generated legal moves only, and switched to pseudo legal later [2]. Plain alpha-beta is realized in negamax manner with Beta-cutoffs, and performs null move pruning with R=2 and verification search, and a quiescence search considering MVV/LVA to order moves [3].
See also
Forum Posts
- WCRCC-Report by Roman Hartmann, CCC, June 23, 2008 » WCRCC 2008
- STS [1-10] Roce 0.0380 by Swaminathan Natarajan, July 15, 2010 » Strategic Test Suite
- Re: Legal or Pseudo-Legal Move generation by Roman Hartmann, CCC, July 27, 2010
- Re: Question regarding WAC number 2 by Roman Hartmann, CCC, October 19, 2010 » Win at Chess
- Re: Chess960 / FRC on ICS by Roman Hartmann, CCC, July 01, 2013 » Chess960
- perft/divide bug in roce38 and Sharper? [SOLVED] by thedrunkard, Winboard Forum, October 16, 2013 » Perft, Sharper
- Re: Worst advice by Roman Hartmann, CCC, August 11, 2015 » Aspiration Windows
External Links
Chess Engine
Misc
References
- ↑ A few informations regarding perft/divide
- ↑ Re: Legal or Pseudo-Legal Move generation by Roman Hartmann, CCC, July 27, 2010
- ↑ Description based on ROCE - Roman's Own Chess Engine - A few technical details
