Description of Rybka 4 Opening Book by Jiri Dufek
The Rybka 4 opening book is a high-class compilation of opening theory. It was developed for the worlds strongest chess entity - 100 cores cluster Rybka and program Rybka4 and will maximize the programs playing strength. The choice of variations in the book is well suited to the style of the program, and the book has been fine-tuned and checked in thousands of games. The Rybka Book include 17 million positions and over 700.000 games, which were selected from following sources: TOP human practice, correspondence chess games and computer chess games (up to April 2010). And this is only the starting point: the value of the book lies in over 700 original analysis and move choices, which lead to a re-evaluation in many critical points of modern theory. This makes it useful for tournament and correspondence players alike. The book contains a lot of computer-checked analysis never published anywhere before.
The author of the Rybka4 book is Jiri Dufek (national master, FIDE 2276, ICCF IM 2579), one of the worlds leading experts in chess opening theory. Jiri Dufek has been on the Rybka team since summer 2009, and his preparation is used in all official events after this date, which Rykba won. During World Championship match between Vishy Anand and Veselin Topalov worked as second of Veselin Topalov. In his long chess career he won twice Czech Correspondence Team Chess Championship and wrote together with Roman Chytilek book Beating the French defence (in Czech only).
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Customer Reviews of Rybka 4 Opening Book by Jiri Dufek
Paul from Cedar Rapids Rybka 4 Opening Book by Jiri Dufek ReviewThe Rybka Opening Book by IM Jiri Dufek makes an excellent companion for Rybka 4 as well a Deep Rybka 4 or for that matter any playing engine which can utilize the .ctg book file protocal. An openings book is a vital tool for a chess playing engine as it helps to direct the move search in the early phase of the game. Thus helping to get off to a good start. IM Dufek's work is well evident in the numerous novelties he has mined and his practical results in Computer matches speak for themselves. It's a surprisingly large book at 1.23GB and covers a wide range of openings. Nonetheless it is comprehensive with the more fashionable lines in particular, deeply analysed. He has made a very valuable contribution to Opening theory and takes much of the mystery out of this important phase of the game. As a reference for future novelties it can be highly recommended.
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