Rybka 4 Aquarium

The Aquarium 2010 chess playing interface, coupled with the powerful Rybka 4 analysis engines, gives you a complete chess playing program and more.

The advanced IDEA interface permits multiple analysis sessions - explore the critical sub-variations, and analyze each in a separate window. Or study two or more unrelated games or positions.

Analyze, annotate, publish, search the rich game database. Loaded with powerful features, such as the ability to create video lectures!

Supports Fritz/Chessbase files, Chess Assistant files, and standard PGN text files.

Compatible with Windows 7/XP/Vista.

BONUS: You also get Openings Encylopedia 2010 [DVD], more than 8000 annotations by GM Kalinin and 500,000 expert evaluations of key positions.