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Interview with the Developers of Rybka 3

In last month’s ChessOK Cafe I interviewed the developers of Rybka Aquarium, a new graphical user interface (GUI) for Rybka that is expected to be released soon. This month we’ll be talking to Vasik Rajlich and Larry Kaufman – the brains behind Rybka itself. They are currently working on a completely new version, Rybka 3, which has been in development for almost a year. Rybka has been by far the strongest chess playing engine ever since Vasik released the first beta version and distributed it for free in December 2005. Rybka 3 will not only offer increased playing strength greater chess knowledge compared to Rybka 2.3.2a, but also new features such as FischerRandom chess (Chess960) and “persistent hash”.

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Rybka vs. Benjamin: Match at Draw Odds

Rybka 3 Aquarium logotype At the beginning of January, grandmaster Joel Benjamin played Rybka in an eight-game match in which Benjamin had draw odds. Benjamin had white in every game, and draws were counted as wins for him. Therefore, the only way Rybka could score points was to win with the black pieces. Before the match, Rybka’s creator, IM Vasik Rajlich, calculated that based on ratings GM Benjamin should be more than happy with just two points in the match. However, taking other factors into consideration, he concluded that three or four points for Benjamin would be a more likely outcome.

A poll on the Rybka Forum showed that the majority of the readers expected a close match, with Rybka being the more likely winner.

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