Rybka 4 Extreme

Rybka 4 Extreme is a revolutionary analysis, database and chess publishing tool, combined with the world's strongest chess playing engine. Rybka 4 Extreme offers advanced analysis functions, game commenting, searching, powerful chess trees, playing against the computer, databases, advanced publishing features and much more!

Interactive Deep Analysis is the most advanced chess analysis method available today and is greatly enhanced in Rybka 4 Extreme. It's completely new approach make it an essential weapon in the arsenal of every serious chess player and analyst!

* Simultaneous analysis by multiple Rybka instances. Use, 2, 4, 10, 20 or even 50 chess engines at the same time for faster results!

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.

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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.