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

Rybka won the CCT11 tournament!

The annual computer chess tournament was held this weekend on Internet Chess Club.

The Rybka team was using a cluster of 9 computers working in parallel for the event. As Rybka doesn’t support cluster splitting yet, a special Rybka version was created for this purpose.

Operator: Nick Carlin
Cluster implementation: Lukas Cimiotti
Rybka engine: Vasik Rajlich, Larry Kaufman
Opening book: Jeroen Noomen’s Rybka Aquarium opening book
Interface: Chess Assistant 10

View all games

In this position from DIEP - Rybka game Rybka clearly sees that she wins the ending giving the rook away with 36…Rxf3! move. So she went to it several moves before.

Read the rest of this entry »

Introduction of ChessOK’s New Online Chess Shop

We are always looking for the ways to increase our customers’ satisfaction. We are moving one step closer to this goal with the introduction of our new online shop. We’ve made shopping easier than ever before. The most important additions are:

  • Easy navigation - find what you’re looking for in mere seconds and put it in the shopping cart with one click.
  • Quick checkout - forget about registration, requests of excess personal information, etc. Now its easy as 1-2-3.
  • Instant delivery of downloadable products when paying by Paypal - you don’t need to wait hours or even days anymore.
  • Dedicated customers service - in case of any problems, refer to provided help, documentation, or write to technical/sales support.
  • Cleaner product descriptions.
  • Inexpensive shipping with simplified shipping cost structure.
  • …and much more!

You may begin shopping either by clicking Shop link on top menu, or using the right panel to browse through product categories.

Amber Blindfold and Rapid tournament 2009

amber-2009The 18th traditional TopGM’s blindfold and rapid tournament in Nice, France will take part from Mar 14th to 26th.
Players: V. Topalov (BUL, 2796), World Champion V. Anand (IND, 2791), V. Ivanchuk (UKR, 2779), M. Carlsen (NOR, 2776), A. Morozevich (RUS, 2771), T. Radjabov (AZE, 2761), World Exchampion V. Kramnik (RUS, 2759), P. Leko (HUN, 2751), L. Aronian (ARM, 2750), Wang Yue (CHN, 2739), G. Kamsky (USA, 2725), S. Karjakin (UKR, 2706).
Tournament format: Round robin..
Prize fond: 216,000 Euros.
Average ELO is 2759. It is 20th FIDE tournament category.

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]

Final Standings: 1. Aronian – 14; 2-3. Kramnik, Anand – 13½; 4. Carlsen – 13; 5. Morozevich – 11; 6-7. Topalov, Karjakin – 10½; 8-9. Kamsky, Leko – 10; 10. Ivanchuk – 9½; 11. Radjabov – 9; 12. Wang Yue – 7½.

Below are cross-table and pairings:
Read the rest of this entry »

Article - Jeroen’s New Opening Book for Rybka Aquarium

Buy Rybka 3 Openingbook by Jeroen Noomen

The first professional opening book for Rybka Aquarium has been released. The author is non other than Jeroen Noomen, a very experienced and highly regarded opening book author.

Jeroen is a member of the Rybka team and the author of the Rybka’s private opening book which is used in its most important competitions, including the World Computer Chess Championship.

Read the rest of this entry »

Aquarium 3.1.1 Update

Rybka 3 Aquarium logotypeAquarium 3.1.1 Update has been released just recently.

You can download it using ChessOK Downloader or from our site:
Full update from any version
Incremental update 3.1.0 to 3.1.1

The download size is 17 Mb.

For German version: after installing the update, delete the file <aquarium>\Aquarium.ger-rs-map.

Read below what’s new in Aquarium 3.1.1 (also available in the Aquarium FAQ):

Read the rest of this entry »

New! Rybka Aquarium opening book by Jeroen Noomen

Buy Rybka 3 Openingbook by Jeroen NoomenThe Rybka Aquarium project is rapidly advancing on several exciting fronts. The latest addition is the first professionally prepared opening book in the native Aquarium format has been released just recently.

The Rybka Aquarium opening book focuses on popular variations and covers all the latest theory. It’s an opening book no strong player can afford to miss!

Buy Rybka 3 Opening book by Jeroen Noomen

Read the rest of this entry »

Aquarium 3.1.0 Update

Rybka 3 Aquarium logotypeAquarium 3.1.0 Update has been released just recently.

You can download it using ChessOK Downloader or from our site:
Full update from any version
Incremental update 3.0.8 to 3.1.0

The download size is 17 Mb.

For German version: after installing the update, delete the file <aquarium>\Aquarium.ger-rs-map.

We are also glad to announce the release of Aquarium Opening Book by Jeroen Noomen.

Read below what’s new in Aquarium 3.1.0 (also available in the Aquarium FAQ):

Read the rest of this entry »

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 »