Houdini Aquarium 2019 & ChessOK Aquarium 2020
Houdini Aquarium 2019 is a new powerful analysis, database and chess publishing tool, powered by the world's strongest chess engine Houdini 6 and 7-piece Lomonosov Tablebases.

Houdini 6 Aquarium 2019 €53.95
ChessOK Aquarium 2020 €35.95

Video Interview with Vasik Rajlich
There is no need to introduce Rybka to ChessOK.com visitors, who have been using it as a part of the Rybka Aquarium package. However, the man behind the strongest chess engine in the world, Vasik Rajlich, is probably little known outside the circle of computer chess enthusiasts. The following interview with Vas, conducted by Nelson Hernandez, should be of great interest to every Rybka user who wants to know Vas’ views and where he is heading with the next Rybka versions. We are at crossroads in the chess engine market. What will the changes mean for the serious chess player? Read the rest of this entry »

New Training Software: Opening Lab
We are glad to inform you, that we have a new training software available at our shop: Opening Lab. Opening Lab is a fine opening manual. It features a theoretical review of all the chess openings, which are illustrated by instructive games of the greatest chess players. Each opening variation is supplied with evaluations and characteristics of key moves. The history of the variations’ development is described, as well as their current status. Opening Lab for download — $25 / €18 Opening Lab on CD — $32 / €25.6

Various Updates
  • Aquarium 2010 (version 4.0.2) update has been released just recently. Download — 7.5mb.
  • German language pack for Aquarium 2010 is released. Download
  • Rybka Opening book by Jeroen Noomen has been updated to run in Aquarium 2010 package. In case of any problems you need to redownload and reinstall the updated version of the book. You can download the updated book from there using your serial key.
  • Peshka training interface has been updated fixing a couple of bugs and allowing course updates (only download versions). You can download the updated interface from there. After downloading reinstall Peshka. Read more in our FAQ.
Read below for more information about updates. Read the rest of this entry »

London Chess Classic
London Chess ClassicLondon Chess Classic will be held London, Great Britain from December 8th to 15th December. Participants include: Magnus Carlsen (ELO 2801), Vladimir Kramnik (ELO 2772), Hikaru Nakamura (ELO 2715), Nigel Short (ELO 2707), Michael Adams (ELO 2698), Ni Hua, Luke McShane and David Howell. Average ELO: 2697. Time control: 2 hour for 40 moves + 1 hour to 20 moves + 15 min and 30 sec/move. Free day: December 11th. All rounds except for the last start at 14.00 GMT. Last round starts at 12.00 GMT ChessOK is going to broadcast all games of this tournament with Rybka 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] [–table–]

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

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