There are four new program packages available at ChessOK shop:

— ChessOK Aquarium Basic for €19.9 / $25
— ChessOK Aquarium Standard for €34 / $40
— Rybka 3 and Chess Openings 2009 for €45 / $59
    + Christmas present: ChessOK Aquarium Basic
— Deep Rybka 3 and Chess Openings 2009 for €79 / $109
    + Christmas present: ChessOK Aquarium Standard

ChessOK Aquarium – modern graphical chess interface, which offers advanced analysis functions, game commenting, searching, powerful chess trees, playing, databases and more is available for as low as €19.9 / $25. It has full set of functions of the top package, Rybka 3 Aquarium.

More information about the packages below:

Compare different Aquarium packages

Aquarium is available in four packages. All packages contain fully featured Aquarium interface. The differences are in chess engines, additional databases included and, of course, prices:

¹ Rybka 2.2n2 is the strongest freeware engine.
² Rybka 2.3.2a is the 2007 World Computer Chess champion.
³ Rybka 3 is the 2008 World Computer Chess champion.
⁴ As measured by CCRL40/40 rating list
⁵ On multi-core computer

Aquarium can read data from different database formats and works with any modern chess engine, so it is possible to use the databases (like Megabase from Chessbase) and engines (like Junior, Schredder, Naum, Zappa, HIARCS, etc) you already have. Free databases also can be downloaded from the Internet.
ChessOK Aquarium Basic and Standard are available for download only as of now, other packages can also be bought on DVD.
Read more about ChessOK Aquarium Basic.
Read more about ChessOK Aquarium Standard.

Recommendations

• ChessOK Aquarium Basic – is recommended for those who don’t need the full power of the world’s strongest chess program, only the engine to play chess from time to time. It is also recommended for those who already own Rybka 3 and wants to try out the possibilities of the Aquarium chess interface.
  • for download – €19.9 / $25
• ChessOK Aquarium Standard – is recommended for those users who already own the Rybka 3 engine, but also want up-to-date games databases and opening tree with engine evaluations. It’s a unique offer for the price specified, the alike packages from competitors cost as much as 3 times more.
  • for download – €34 / $40
• Rybka 3 Aquarium is recommended for everyone seriously interested in chess, and have single-processor computer. This package is the most powerful computer chess analyst, in many aspects more powerful than the leading human Grandmasters.
  • for download – €45 / $59
  • on DVD – €50 / $68
• Deep Rybka 3 Aquarium is recommended for the chess enthusiasts who need the highest quality analysis in a limited time. A powerful, multi-processor (multi-core) PC with Deep Rybka 3 Aquarium will become yur own chess analysis center, equal in analysis quality to the group of several grandmasters.
  • for download – €79 / $109
  • on DVD – €90 / $119

Packages can be bought either for download, or on DVD with printed manual. If you buy a version on DVD you can also download it before your DVD gets shipped.

Rybka 3 & Chess Openings 2009

Rybka 3 & Chess Openings 2009 contains Chess Openinings Encyclopedia 2009 with 3,600,000 games, 8,000 annotations from GM Kalinin and 500,000 expert evaluations of key opening positions combined with the strongest chess engine, Rybka 3 for extensive analyzing and playing.
The difference between Rybka 3 & Chess Openings 2009 packages can be described in a few words:

• Rybka 3 & Chess Openings 2009 contains single-processor version of Rybka 3.
• Deep Rybka 3 & Chess Openings 2009 contains multi-processor version of Rybka 3.

Other than that, the packages are the same. Available for download only as of now.