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Rybka 4 Opening Book

Product Code: WIN0092CV

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This book is intended for Rybka Aquarium and Rybka Extreme.

Rybka 4 Opening Book is a thoroughly researched and up to date collection of modern opening lines. It can be used as an opening book in chess engine matches, an opening guide in correspondence chess, as well as a source for general opening studies and tournament preparation by players at all levels.

The author of the book, Jiri Dufek, is one of Veselin Topalov's seconds in his world championship match against Viswanathan Anand (Sofia 2010). He is one of the top freestyle players in the world, and an International Master of correspondence chess.

The opening book is based on a careful selection of the most important theoretical games, both by human players and chess engines. All variations were carefully reviewed and moves were classified and color coded with green color (recommended moves), red (not recommended), blue (recommended for human tournaments but not computer tournaments) and black (neutral moves). If you want to build a successful opening repertoire, based on active but solid lines, this is the opening book for you!

As a special bonus from ChessOK, the book includes chess trees (positional databases) containing computer evaluations of the moves in the book and statistics showing their popularity in human games and in correspondence play. The trees also show changes to the popularity of moves in the past year.

System Requirements: 256 Mb RAM, Hard Disk 2 Gb, Windows 2000/Vista/XP/7, DVD-ROM, Rybka 4 Aquarium or Rybka 4 Extreme.

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Our Price: $29.95



Returns and Exchanges

Return Policy of Downloadable Software, DVDs and Electronic (E) Books - ITEMS THAT ARE NOT SHIPPED TO CUSTOMERS We're sorry, but all purchases of Download Productsare final and can not be returned or exchanged. There are NO exceptions to this rule as this is the industry standard for downloadable products.   Return Policy of Software and DVDs on Physical Media - ITEMS THAT ARE SHIPPED TO CUSTOMERS Computer Software and DVDs that come on Physical Media (such as CD-ROMs and DVD-ROMS)  can only be returned or exchanged if the product is in its original, shrinkwrapped packaging and has not been installed or used in any way. Once you open the packaging of a Computer Software or DVD title, it can only be exchanged for a new copy of the same title and only if the original media is defective. There are NO exceptions to this rule.  

Requires Windows

IBM-compatible PC, 256 Mb RAM, Hard Disk 2 Gb of free disk space, Windows 7/XP/Vista/2000. Rybka 4 Aquarium or Rybka 4 Extreme required.

Media Mail Eligible

Media Mail® shipping from the US Postal Service is the cost-effective way to ship Books, Software and DVDs. With shipping rates starting at only 4.00, it's the most affordable shipping method available.

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