Chess OK

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Chess OK is one of the world’s largest and most famous manufacturers of high-quality chess training software, opening books on CDs, and chess engines and database programs. And you can get your hands on them without boring a hole in your pocket!

Whether you are looking for Chess OK’s Houdini Opening Book, Deep Rybka Aquarium 2011 for advanced analysis and playing features, Chess Assistant 12 for efficient game and opening database management, or Chess Assistant Mega Package to get all those goodies in one neat CD, has it all! High quality chess programs need not be expensive.

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