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Clones

To expand this list, create an engine page of a proved clone (reference!) with the tag "clones".

• 1. Almond
  2. Cassia Chess Mate
  3. Chess Champion MK I
  4. Chinito
  5. Deep<9>
  6. Fafis
  7. Gedeon
  8. Greif
  9. Gunda-1
  10. Kaissa (BY)
  11. LaGrande
  12. LaPetite
  13. Patriot
  14. Quickstep
  15. SC 1
  16. SC 2
  17. Scaramanga
  18. SquarknII
  19. Voyager

Derivatives

To expand this list, create an engine page of a proved derivative engine (reference!) with the tag "derivatives".

• 1. Belka
  2. Bionic Impakt
  3. Bouquet
  4. Cluster Toga
  5. Cyclone
  6. Defenchess
  7. Delphil
  8. DON
  9. Fire
  10. Firenzina
  11. Gambit Fruit
  12. GullChess
  13. Igorrit
  14. Ivanhoe
  15. KChess
  16. Lion
  17. Phoenix (Rahul)
  18. Rybka
  19. Smaug
  20. Sting
  21. Strelka
  22. SugaR
  23. Toga
  24. Toga Log
  25. Vitruvius

See also

• ICGA Investigations
• Historical Examples

Publications

• J. Howard Johnson (1994). Substring Matching for Clone Detection and Change Tracking. ICSM 1994, pp. 120-126, CiteSeerX
• Jaap van den Herik (2001). Science, Competition and Business. ICGA Journal, Vol. 24, No. 4, pdf
• Paolo Ciancarini, Gian Piero Favini (2009). Detecting clones in game-playing software. ScienceDirect - Entertainment Computing
• David Levy (2011). Attack of the Clones. ICGA Journal, Vol. 34, No. 1
• Peter Skinner (2011). Send out the Clones. Selective Search 152, pp. 17, pdf hosted by Mike Watters
• Eric Hallsworth (2011). Clone Wars ... part II. Selective Search 153, pp. 9, pdf hosted by Mike Watters
• Eric Hallsworth (2011). Clone Wars - Our Readers have their Say. Selective Search 154, pp. 6, pdf hosted by Mike Watters
• Anthony Cozzie (2011). The Future of Computer Chess. Selective Search 154, pp. 11, pdf hosted by Mike Watters
• Jaap van den Herik, Krzysztof Siewicz (2011). Open Source has a Price. ICGA Journal, Vol. 34, No. 2
• David Levy (2011). Rybka Disqualified and Banned from World Computer Chess Championships. ICGA Journal, Vol. 34, No. 2
• David Levy (2011). A Very Sad Case. ICGA Journal, Vol. 34, No. 2
• Eric Hallsworth (2011). Rybka disqualified and banned by ICGA from World Computer Chess Championships, Lifetime Ban for Vasik Rajlich. Selective Search 155, pp. 8, pdf hosted by Mike Watters
• Jaap van den Herik, Aske Plaat, David Levy, Daniel Dimov (2014). Plagiarism in Game Programming Competitions. Entertainment Computing, Vol. 5, No. 3, pdf preprint
• Søren Riis (2014). What makes a chess program original? Revisiting the Rybka case. Entertainment Computing, Vol. 5, No. 3
• Don Dailey, Adam Hair, Mark Watkins (2014). Move Similarity Analysis in Chess Programs. Entertainment Computing, Vol. 5, No. 3, preprint as pdf ^[1]

Forum Posts

1999

• crafty copyright problem by Robert Hyatt, rgcc, February 17, 1999 » Voyager
• On the Voyager Issue, briefly - to Bob Hyatt by Đorđe Vidanović, CCC, February 17, 1999

2000 ...

• A longish rambling post.....on topic by Roger Brown, Winboard Forum, September 07, 2003

2005 ...

• Cloned Chess Engines by Dave Potesta, CCC, May 05, 2005
• Cloning... by Alex Schmidt, CCC, May 06, 2005 ^[2] » Patriot
• Finding clones... by Alexander Schmidt, CCC, August 15, 2008
• On discussing clones by Robert Hyatt, CCC, February 21, 2009
• More fuel for the cloning argumentation fire by Steven Edwards, CCC, March 18, 2009

2010 ...

• Clone detection test by Don Dailey, CCC, January 27, 2010
• Similarity Detector Available by Don Dailey, CCC, December 26, 2010
• On "clone testing" by BB+, OpenChess Forum, December 27, 2010
• Without the Clean Room by Chris Whittington, OpenChess Forum, January 26, 2011
• What is a derivative? by Fabien Letouzey, CCC, January 27, 2011
• What the computer chess community needs to decide by Don Dailey, CCC, February 09, 2011
• Attack of the Clones (ChessVibes) by BB+, OpenChess Forum, 19 February, 2011
• Stockfish clones in the AppStore: it's becoming a plague... by Julien Marcel, CCC, May 28, 2011 » Stockfish
• Rybka disqualified and banned from WCCC by Jeremy Bernstein, OpenChess Forum, June 29, 2011
• Fritz and Naum shown as Rybka/Strelka clones by Kai Laskos, CCC, October 17, 2011
• Are Fritz and Naum Rybka/Strelka clones? by SR, Rybka Forum, November 09, 2011 ^[3]
• The near future of computer chess by Ed Schröder, CCC, November 18, 2011

2012 ...

• Copying code by Ed Schröder, CCC, January 10, 2012
• Programmer code of honor by Ed Schröder, CCC, June 13, 2012
• Programmer code of honor (update) by Ed Schröder, CCC, June 29, 2012
• Legal Reverse engineering of software by Charles Roberson, CCC, February 14, 2013

2014 ...

• Similarity tests by Gabor Szots, CCC, October 01, 2014
• Adam Hair's article on Pairwise comparison of engines by Charles Roberson, CCC, May 19, 2015 ^[4]

External Links

• Clone Engine List from Ron Murawski's Computer-Chess Wiki
• Clone (computing) from Wikipedia
• Cloning (disambiguation) from Wikipedia
• Cloning from Wikipedia
• Derivative work from Wikipedia
• Plagiarism from Wikipedia
• Reverse engineering from Wikipedia
• Clean room design from Wikipedia
• Chinese wall - Computer science from Wikipedia
• Plagiarism from Handtalk by Chen Zhixing
• Plagiarism in Computer Go by Raymond Keene, April 1, 2000
• Chess engine controversy | ChessVibes by Arne Moll, March 29, 2010 » Ippolit, Rybka, Fruit
• Selective Search Issue 150 – My Article by Peter Skinner, February 8, 2011 » Selective Search
• Attack of the clones | ChessVibes by David Levy, February 19, 2011 » Rybka, Fruit, Strelka
• What is a Clone? from ICGA Investigations Wiki
• Rybka disqualified and banned from World Computer Chess Championships | ChessVibes by Peter Doggers, June 29, 2011
• Controversy over Rybka's disqualification and ban (UPDATE) | ChessVibes by Peter Doggers, January 08, 2012
• A Pairwise Comparison of Chess Engine Move Selections by Adam Hair, hosted by Ed Schröder ^{[5] [6] [7] [8]}

References

1. ^ A Pairwise Comparison of Chess Engine Move Selections by Adam Hair, hosted by Ed Schröder
2. ^ Re: Clone engine list - Patriot by hirdelgird, WinBoard Forum, April 19, 2007
3. ^ Hierarchical clustering from Wikipedia
4. ^ A Pairwise Comparison of Chess Engine Move Selections by Adam Hair, hosted by Ed Schröder
5. ^ UPGMA from Wikipedia
6. ^ UPGMA Worked Example by Richard Edwards
7. ^ Adam Hair's article on Pairwise comparison of engines by Charles Roberson, CCC, May 19, 2015
8. ^ Don Dailey, Adam Hair, Mark Watkins (2014). Move Similarity Analysis in Chess Programs. Entertainment Computing, Vol. 5, No. 3, preprint as pdf

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