By peter struwel
Date 2009-12-04 20:03
By peter struwel
Date 2009-12-06 12:03
By Peter Behringer
Date 2009-12-06 15:14
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By peter struwel
Date 2009-12-06 15:42
By peter struwel
Date 2009-12-07 08:47
By peter struwel
Date 2009-12-06 19:08
By peter struwel
Date 2009-12-07 11:53
By peter struwel
Date 2009-12-07 15:05
CSS-Shopdaß jemand, der keinen graden satz formulieren kann, in der lage ist, eine sinnvolle diskussion zu führen
By Horst Wandersleben
Date 2009-12-08 13:19
By Horst Wandersleben
Date 2009-12-08 13:32
By Wolfgang Battig
Date 2009-12-08 14:19
By peter struwel
Date 2009-12-08 12:11
By peter struwel
Date 2009-12-08 17:54
Strelka controversy
In May 2007, a new chess engine called Strelka appeared on the scene, claimed to be written by Yuri Osipov. Soon, there were allegations that Strelka was a clone of Rybka 1.0 beta, in the sense that it was a reverse-engineered and slightly modified version of Rybka.[39] Several players found Strelka to yield identical analysis to Rybka in a variety of different situations, even having the same bugs and weaknesses in some cases. Osipov, however, stated repeatedly on discussion boards that Strelka was based on Fruit, not Rybka, and that any similarities was either because Rybka also was based on Fruit, or because he had tuned the evaluation function to be as close to Rybka as possible.[40][41]
With the release of Strelka 2.0 beta, source code was included. Rajlich stated that the source made it "obvious" that Strelka 2.0 beta was indeed a Rybka 1.0 beta clone, although not without some improvements in certain areas. On basis of this, he claimed the source as his own and intended to re-release it under his own name,[42] although he later decided not to do so. He also made allegations that "Yuri Osipov" was a pen name.
[edit] IPPOLIT controversy
A chess engine called Ippolit was released in October 2009 with its source code. Some testers claim that Ippolit is stronger than Rybka 3,[43][44] while other reports of independent sources claim that Rybka and Ippolit are of roughly the same strength when running on a single core CPU. International Master Vasik Rajlich, the author of Rybka, has alluded that Ippolit may be a decompile version of Rybka, and that the people involved kept him informed of their progress via email.[45] As of October 2009 there is no definitive proof as to the origin of Ippolit and whether it is original work or a clone. Despite Rajlich's statement, some claim that Ippolit is not a clone of Rybka due to noticeable differences, such as a smaller memory footprint and different end-game knowledge, specifically bishop under promotion that the Rybka chess engine does not support.[46]
RobboLito is the current, actively-developed version of IPPOLIT.[47]
By Gerhard Sonnabend
Date 2009-12-08 19:13
By peter struwel
Date 2009-12-08 19:34
By Gerhard Sonnabend
Date 2009-12-08 19:56
By peter struwel
Date 2009-12-16 17:45
By Michael Scheidl
Date 2009-12-16 19:17
By peter struwel
Date 2009-12-16 22:22
By Michael Scheidl
Date 2009-12-06 16:09
By Werner Mueller
Date 2009-12-06 19:01
By peter struwel
Date 2009-12-06 19:09
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