Difference between revisions of "Ruffian"

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'''[[Main Page|Home]] * [[Engines]] * Ruffian'''
 
'''[[Main Page|Home]] * [[Engines]] * Ruffian'''
 
[[FILE:Ruffian with her jockey Jacinto Vazquez.jpg|right|thumb| [https://en.wikipedia.org/wiki/Ruffian_%28horse%29 Ruffian] <ref>[https://en.wikipedia.org/wiki/Ruffian_%28horse%29 Ruffian] ridden by [https://en.wikipedia.org/wiki/Jacinto_V%C3%A1squez Jacinto Vásquez], Image from [http://madssmith.blogspot.com/2011/05/ruffian-racings-greatest-filly.html Horse Racing: Ruffian: Racing's Greatest Filly], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
 
  
 
'''Ruffian''',<br/>
 
'''Ruffian''',<br/>
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=External Links=
 
=External Links=
 
==Chess Engine==
 
==Chess Engine==
* [http://www.playwitharena.com/?Partner_Chess_Engines:Ruffian%26nbsp%3B Ruffian] from [[Arena|Arena Chess GUI for Linux and Windows]]
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* [https://web.archive.org/web/20120106020305/http://www.playwitharena.com/?Partner_Chess_Engines:Ruffian%26nbsp%3B Ruffian] from [[Arena]] ([https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine])
* [http://www.top-5000.nl/int/ruffian.htm Ruffian, the replacement to ABBA], Interview with [[Perola Valfridsson]] by [[Frank Quisinsky]] et al., October, 2002, hosted by [[Ed Schroder|Ed Schröder]]
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* https://web.archive.org/web/20170830232610/http://www.top-5000.nl/int/ruffian.htm Ruffian, the replacement to ABBA], Interview with [[Perola Valfridsson]] by [[Frank Quisinsky]] et al., October, 2002, hosted by [[Ed Schroder|Ed Schröder]] ([https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine])
 
* [https://en.chessbase.com/post/shredder-and-ruffian-lead-in-leiden Shredder and Ruffian lead in Leiden] by [[Eric van Reem]] and [[Theo van der Storm]], [[ChessBase]], April 24, 2004 » [[ICT 2004]]
 
* [https://en.chessbase.com/post/shredder-and-ruffian-lead-in-leiden Shredder and Ruffian lead in Leiden] by [[Eric van Reem]] and [[Theo van der Storm]], [[ChessBase]], April 24, 2004 » [[ICT 2004]]
 
* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Ruffian&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 Ruffian] in [[CCRL|CCRL 40/40]]
 
* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Ruffian&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 Ruffian] in [[CCRL|CCRL 40/40]]
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[[Category:Commercial]]
 
[[Category:Commercial]]
 
[[Category:UCI]]
 
[[Category:UCI]]
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[[Category:WinBoard]]
 
[[Category:WinBoard]]
 
[[Category:XBoard]]
 
[[Category:XBoard]]
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[[Category:X86]]
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[[Category:PC]]
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[[Category:Linux]]
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[[Category:Windows]]
 
[[Category:Chess960]]
 
[[Category:Chess960]]
 
[[Category:Mammal]]
 
[[Category:Mammal]]
 
[[Category:Racehorse]]
 
[[Category:Racehorse]]

Latest revision as of 21:47, 1 August 2020

Home * Engines * Ruffian

Ruffian,
a chess engine developed by Perola Valfridsson since 1998, which appeared in July 2002 as a surprisingly strong newcomer playing on ICC and FICS [1], supporting both, the Chess Engine Communication Protocol and UCI.

Description

With portability and performance in mind, Ruffian was written in C, and used a hybrid board representation of bitboard and 8x8 board. It performs PVS with null move pruning and other forward pruning techniques as well as a few own algorithms and tricks [2]. One of the major evaluation terms is mobility based on pre-calculated tables considering various patterns [3] [4].

Photos

Ict2004win29.jpg

ICT 2004 winners: Chrilly Donninger, Erdogan Günes (Hydra 2nd), Stefan Meyer-Kahlen (Shredder 1st),
Johan Havegheer (Ruffian 3rd), Vincent Diepeveen (Diep 3rd) [5]

Achievements

Ruffian was shared winner of the CCT5 and lonesome winner of the DOCCC 2003 supported by book author Đorđe Vidanović, operated by Johan Havegheer, Frank Quisinsky and Leo Dijksman [6] [7], winner of the (unofficial) Swedish Championship in 2003 [8], and further played a strong CCT6 and ICT 2004.

Free Ruffian

The free Windows versions 1.0 from September 2002 is still available for download from Ed Schröder's Winboard and UCI engines download site [9].

Commercial Ruffian

In 2003, Ruffian 2 went commercial, first bundled with Chess Assistant by Convekta, where Victor Zakharov mentions Dann Corbit was a big help [10], and further with the otherwise free Arena GUI, CD production by Frank Quisinsky and distribution by Schachversand Niggemann [11], and soon as bundle with ChessPartner by Lokasoft [12]. Ruffian is base of the chess AI in Kasparov Chessmate [13], with Perola Valfridsson credited as author by MobyGames [14]. The initial hype about Ruffian's commercialization was apparently detrimental to its authors motivation to continue the development [15]. In conjunction with the upcoming strong free engines catching up, this was slowly but surely the fall of the commercial endeavor [16]. In May 2017, Frank Quisinsky rescued Ruffian versions 2.02 and 2.1 from their commercial burdens [17].

See also

Forum Posts

2002

2003

2004

2005 ...

2015 ...

External Links

Chess Engine

Misc

References

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