DanChess
DanChess,
a chess engine by Daniel Shawul written in C++, compliant to the Chess Engine Communication Protocol. DanChess uses a hybrid mailbox and bitboards board representation [1] , utilizes attack tables, and is able to probe Nalimov Tablebases. DanChess had its tournament debut in 2005, playing a strong CCT7 [2] , but was soon superseeded by its successor Scorpio [3].
Controversy
During forum discussions about early DanChess versions and the definition of clones [4], Robert Hyatt pointed out DanChess had various pre-initialized tables as used in Crafty and a quite similar SEE swap implementation [5], the latter also mentioned as extremely similar by Dann Corbit, who as a kind of ombudsman inspected DanChess’ source code concluding it “clean” otherwise, and disagreed with Hyatt about both the spirit and the extent of whether or not DanChess is a Crafty clone [6]. However, all controversial tracks were later removed in subsequent versions, version 1.04 was published as open source [7].
Forum Posts
- WBEC-Ridderkerk new results + first chess engine from Ethiop by Leo Dijksman, Winboard Forum, August 29, 2003
- New version of DanChess 1.02 8x faster by Daniel Shawul, Winboard Forum, November 23, 2003
- crafty clone? by Daniel Shawul, Winboard Forum, November 28, 2003
- Danchess taken out suspected clone of … by Daniel Shawul, Winboard Forum, January 28, 2004
- definition of clones: Danchess and Crafty by Uri Blass, CCC, February 15, 2004
- Robert Hyatt about Danchess and Crafty (in CCC) by Matthias Gemuh, Winboard Forum, February 15, 2004
- Re: WBEC Ridderkerk new results by Dann Corbit, Winboard Forum, February 15, 2004
- DanChess accusation solved! by Daniel Shawul, Winboard Forum, February 24, 2004
- DanChess with source code by Dann Corbit, Winboard Forum, March 01, 2004
- DanChess 1.05 released! by Daniel Shawul, Winboard Forum, June 07, 2004
- DanChess 1.06 by Daniel Shawul, Winboard Forum, July 13, 2004
- DanChess SMP beta available by Daniel Shawul, Winboard Forum, December 24, 2004
- About DanChess in cct7 by Daniel Shawul, CCC, February 07, 2005
External Links
References
- ↑ Dan chess accusation solved! by Daniel Shawul, Winboard Forum, February 24, 2004
- ↑ About DanChess in cct7 by Daniel Shawul, CCC, February 07, 2005
- ↑ Gauntlet Scorpio v1.1 - games - replaced DanChess by Karl-Heinz Söntges, CCC, June 02, 2005
- ↑ crafty clone? by Daniel Shawul, Winboard Forum, November 28, 2003
- ↑ Re: definition of clones: Danchess an Crafty by Robert Hyatt, CCC, February 15, 2004
- ↑ Re: WBEC Ridderkerk new results by Dann Corbit, Winboard Forum, February 15, 2004
- ↑ DanChess with source code by Dann Corbit, Winboard Forum, March 01, 2004