Chess Assistant 17 & Chess Assistant 17 PRO
Chess Assistant 17 combines advanced game database management, analysis powered by the strongest Houdini 5 engine, the advanced Tree mode, Opening Encyclopedia and many other features.

Chess Assistant 17 with Houdini 5 — $94.95 / €75.96
Chess Assistant 17 PRO with Houdini 5 PRO — $145.95 / €116.76

Aquarium 3.2.0 Update

Rybka 3 Aquarium logotypeAquarium 3.2.0 Update has been released just recently.

You can download it using ChessOK Downloader or from our site:
Full update from any version
Incremental update 3.1.1 to 3.2.0

The download size is 18 Mb.

Read below what’s new in Aquarium 3.2.0 (also available in the Aquarium FAQ):

Read the rest of this entry »

Dadi Jonsson «Introduction to Writing Aquarium iBooks»

Buy Rybka Aquarium Opening Book In February 2009 I described a new feature of Rybka 3 Aquarium, Interactive Chess Books or iBooks.

At that time the tools for creating iBooks were rather primitive, but a new version of Aquarium is expected soon and improved iBook writing tools are among the enhancements.

In this column I will show you the basics of creating iBooks – enough to get you started writing your own.

Just keep in mind that there are a many features that I only mention briefly, or skip completely, including some that are quite useful for larger writing tasks.

Based on the experience so far, we can see that iBooks are suitable for both small and large projects. You may prefer to use iBooks for your own personal annotations, for presenting tactical exercises and other training material, for web publishing, for preparing forum posts, etc. It has also been used successfully for jobs such as converting a 200 page chess book to iBook format.

Read the rest of this entry »

Grand Prix FIDE: Jermuk-2009

jermukThe 5th FIDE Grand Prix tournament will take part in Jermuk, Armenia from August 8th to 24th.
Number of players: 14.
Average ELO is 2719. It is 19th FIDE tournament category.
Tournament format: Round robin.
Time control: 2 hour for 40 moves + 1 hour to 20 moves + 15 min and 30 sec/move.
Free days: 14th and 19th August

All rounds start at 11.00 GMT.

ChessOK is going to broadcast all games of this tournament with Rybka 3 Aquarium commentary.

Games: Round 1 [download PGN], Round 2 [download PGN], Round 3 [download PGN], Round 4 [download PGN], Round 5 [download PGN], Round 6 [download PGN], Round 7 [download PGN], Round 8 [download PGN], Round 9 [download PGN], Round 10 [download PGN], Round 11 [download PGN], Round 12 [download PGN], Round 13 [download PGN]

Study chess online on Chess King Learn! Time-proven training courses, thousands of examples and exercises.

Start playing right now in your web browser on Chess King Playing Zone! Teams, tournaments, training, analysis and much more!

7-man Lomonosov Tablebases provide deeper-than-ever insight into chess endgame.

Download weekly chess database updates (containing 2000+ games) with latest tournaments and games in PGN and Chess Assistant format.

More »