Strelka
[ Strelka on tour [1] Strelka (Стрелка, Russian for “little arrow”),
a chess program by Jury Osipov which appeared as closed source engine in May 2007. Its successor, Strelka 2.0 was released as open source program in January 2008. Strelka 2.x became runner up behind WildCat at the 1st Computer Chess Championship of CIS Countries in 2008.
From the very beginning Strelka was suspected not to be original but derivative work as elaborated below. What kind of syllogism from the claims and statements by Vasik Rajlich, Fabien Letouzey, Jury Osipov and others applies, remains to be seen. However, it is more likely the ethical issues of computer chess programming are affected rather than the legal ones.
Strelka 2.0
In January 2008, the new Strelka version 2.0 released was open source, and everybody could compare Strelka 2.0 with the Fruit sources for the similarities or not, and whether the claims of Jury Osipov were correct. Notably, a few days later, Vasik Rajlich declared Strelka 2.0 a Rybka 1.0 Beta clone [13] , which on the other hand raised further suspicions on the origins of Rybka.
Strelka 5
In October 2011, Strelka 5 was released as closed source engine, according to Jury Osipov incorporating ideas of Rybka 3, Ippolit, Houdini, Critter and Stockfish, as well as own innovations [14] [15].
See also
Forum Posts
2007
- Наш новый движок Strelka!!! by SDChess, kasparovchess, May 04, 2007
- New engine from Russia by Vladimir Medvedev, CCC, May 05, 2007
- Something ‘Fishy’ about Strelka by Dann Corbit, CCC, May 08, 2007
- Sergei Markow about Strelka by Werner Schüle, CCC, May 09, 2007
- To put everything into place with Strelka by Sergei Markoff, CCC, May 10, 2007
Re: To put everything into place with Strelka by Alexander Schmidt, CCC, May 11, 2007
- Strelka again by Sergei Markoff, CCC, May 11, 2007
- The Strelka affair to date by Fernando Villegas, CCC, May 12, 2007
- My review of Strelka Code by Bryan Hofmann, CCC, May 12, 2007
- Strelka = Rybka 1.0 by DarkAvenger, Rybka Forum, July 07, 2007
- Strelka 1.8 UCI released by Denis P. Mendoza, CCC, July 07, 2007
- What Strelka tells about Rybka’s nodecount and depth by Ernest Bonnem, CCC, July 09, 2007
- Longer comments by V. Rajlich by Marc Lacrosse, CCC, July 10, 2007
- More proof of Strelka cloning by Martin Bryant, CCC, July 10, 2007
- Sensational! Y.Ossipov talking about STRELKA by Evgenii Manev, CCC, July 11, 2007
- Strelka and source code experts by Matthias Gemuh, CCC, July 11, 2007
- new translation of J.Osipov statement in KasparovChess forum by Evgenii Manev, CCC, July 12, 2007
- Fruit, Rybka, Strelka final conclusion! (I hope) by Michael Sherwin, CCC, July 13, 2007 » Rybka, Strelka
- About strelka1.8 sources by Uri Blass, CCC, October 01, 2007
- Strelka 1.8 source code review by Bryan Hofmann, CCC, October 01, 2007
- Strelka - clone status by Dann Corbit, CCC, October 03, 2007
- About the code of strelka by Uri Blass, CCC, October 10, 2007
- Strelka - Open source by Evgenii Manev, CCC, December 29, 2007
2008
- Strelka 2.0 by Vasik Rajlich, Rybka Forum, January 11, 2008
- Re: Strelka 2.0 pg 4 by Anthony Cozzie, Rybka Forum, January 11, 2008
- What’s Strelka’s Secret Sauce? by Steve Maughan, CCC, January 11, 2008
- A comment of Yuri Osipov about V.Rajlich statement by Evgenii Manev, CCC, January 12, 2008
- ethical dilemma by Gerd Isenberg, CCC, January 12, 2008
- Rajlich/Osipov/Rybka/Strelka/Answers by Convekta by Eduard Nemeth, CCC, January 17, 2008 » Rybka, Convekta
- Toga/Glaurung/Strelka Prunings/Reductions by Edsel Apostol, CCC, January 31, 2008 » Toga, Glaurung, Pruning, Reductions
- Anthony Cozzie speak ! by Silvian, Rybka Forum, February 03, 2008
- Strelka cannot see mate in 1 by Uri Blass, CCC, March 06, 2008
- Strelka Reverse Engineered from Rybka: Details Examined by Rick Fadden, CCC, May 01, 2008
- Fruit 2.1 vs Strelka 2.0 by Norman Schmidt, CCC, August 18, 2008 » Fruit
- Rybka 1.0 vs. Strelka by Zach Wegner, CCC, August 19, 2008
- counting similiarities between strelka2.0 and fruit2.1 by Uri Blass, CCC, August 22, 2008
- Strelka = Rybka 1.0 =Fruit 2.1 = Toga?? Oh how disappointing by Oliver Brausch, CCC, October 21, 2008
2011
- Fabien’s open letter to the community by Tord Romstad, CCC, January 23, 2011
- Fabien’s open letter to the community by Tord Romstad, Open Chess Forum, January 23, 2011
- Revisiting Strelka/Rybka by Mark Watkins, Open Chess Forum, January 25, 2011
- Re: Strelka 2.0 B running for the IPON … by Jury Osipov, CCC: Tournaments and Matches, January 27, 2011
- Attack of the clones | ChessVibes by David Levy, 19 February, 2011
- Strelka 5 by Yuriy Osipov by Slavik Pavloff, CCC, October 15, 2011 » Houdini
- Re: Komodo 4 on long time control by Richard Vida, CCC, December 04, 2011 » Houdini, Komodo
2012 …
- strelka 5.6 by Don Dailey, CCC, February 06, 2013 (registration required)
- New Strelka 5.7 MP Available… by Steve Maughan, CCC, October 02, 2013
- Strelka new edition by Norbert Raimund Leisner, CCC, May 01, 2014
External Links
Chess Engine
Misc
References
- ↑ Soviet space dogs from Wikipedia - Belka and Strelka
- ↑ Re: My Tests with Strelka by Eduard Nemeth, CCC, May 07, 2007
- ↑ Re: TO BE OR NOT TO BE by Mike Scheidl, CCC, May 07, 2007
- ↑ Sergei Markow about Strelka by Werner Schüle, CCC, May 09, 2007
- ↑ My review of Strelka Code by Bryan Hofmann, CCC, May 12, 2007
- ↑ Strelka 1.8 source code review by Bryan Hofmann, CCC, October 01, 2007
- ↑ To put everything into place with Strelka by Sergei Markoff, CCC, May 10, 2007
- ↑ Re: My review of Strelka Code by Dann Corbit, CCC, May 12, 2007
- ↑ Re: Is strelka a clone? by Dann Corbit, CCC, July 09, 2007
- ↑ Fabien’s open letter to the community by Tord Romstad, CCC, January 23, 2011
- ↑ Fabien’s open letter to the community by Tord Romstad, Open Chess Forum, January 23, 2011
- ↑ new translation of J.Osipov statement in KasparovChess forum by Evgenii Manev, CCC, July 12, 2007
- ↑ Strelka 2.0 by Vasik Rajlich, Rybka Forum, January 11, 2008
- ↑ Народ.Ру: Осипов Юрий (Russian)
- ↑ Strelka 5 by Yuriy Osipov by Slavik Pavloff, CCC, October 15, 2011