ChessOK develops high quality software for a wide spread of users: professionals, amateurs and young chess players. Below you can find detailed information about all of our software.
ChessOK.com » Chess Software
Rybka & Aquarium Rybka is the strongest chess engine and the computer world chess champion. Rybka family of products allows users to take full advantage of Rybka's power through effective and innovative analysis methods. Besides Rybka we offer new modern user interface, Aquarium, which was developed specifically for it. Buy Rybka 3 AquariumRybka 3 Aquarium – revolutionary analysis and database tool, combined with the world's strongest chess playing engine, Rybka 3. Aquarium offers advanced analysis functions, game commenting, searching, powerful chess trees, playing, databases and much more. Read more.

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Buy Rybka 3 UCIRybka 3 UCI – the strongest chess engine in the world. It leads all independent computer chess rating lists with ELO rating of 3150+ and is the current world computer chess champion. Most of chess grandmasters use Rybka for their everyday training and game analysis. Read more. More products in the category (click to expand)
Chess Assistant and Databases Chess Assistant - the most advanced chess database system. It includes Rybka 3 and is available in various combinations with our database products. They include databases of 3,5 million games, 370,000 correspondence games, opening databases with tens of millions of positions analyzed by Rybka and other chess engines and full endgame Nalimov Tablebases for all 3-4-5 and 6 piece endings. Buy Chess Assistant 10 StarterChess Assistant 10 Starter – the most advanced chess database system. Lightning fast searches in databases with millions of games. Automatic weekly updates with thousands of new games. Advanced analysis functions, built-in CQL search and much more.
Starter package includes Rybka 3 engine and 3,300,000 game database. Read more.

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Buy Chess Assistant 10 ProfessionalChess Assistant 10 Professional
professional package includes multi-processor (multi-core) version of Rybka 3, Chess Opening Encyclopedia 2008 with tens of millions of positions analyzed by chess engines, and the database of 4,000,000 games. Read more.
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Peshk@ Training Courses ChessOK is proud to announce the immediate availability of Peshk@, the newest member of its training and improvement family. Peshk@ is a modern chess improvement and training tool from the developers of CT-ART, one of the most popular and respected tactics training programs.
Before purchasing a training course, please download our free graphical interface Peshk@ with demo versions of training courses and install it. (Manual in PDF)
Buy CT-ART 3.0CT-ART 3.0 – This course is the 3rd revised and expanded edition of the ever popular Chess Tactics Art by Maxim Blokh Buy Complete Chess CourseComplete Chess Course – This course turns a beginner into an intermediate player! (ELO 1200-2000) More products in the category (click to expand)
Chess Training Programs Training programs are developed in cooperation with some of our best trainers. They are based on a proven training methodology and are invaluable tools for improving chess players. Our products cover the training needs of every chess player from the total beginner to the grandmaster level. Every aspect of the game is covered from the opening to the middlegame and the endgame and from strategy to tactics. For those who want to learn chess, we teach the rules and show how the pieces move in the award winning Dinosaur Chess. Buy Dinosaur ChessDinosaur Chess
A fun way to learn chess for the absolute beginner. It assumes zero knowledge of the game and suits perfectly for parents who wish to teach their child how to play chess. Dinosaur Chess turns learning chess into expiring activity. Read more.
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Buy CT-ART 3.0CT-ART 3.0 – the 3rd revised and expanded edition of the ever popular Chess Tactics Art.
Program contains nearly 1,217 main examples with over 1,000 supplementary ones classified by tactical methods, combination motifs and difficulty (from amateurs to masters). Numerous text and visual hints to help the student find the solution. Read more.
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Pocket Software (Handhelds and Cell Phones; Symbian & Java) As handheld devices have become more powerful they have also become more popular for playing and studying chess. ChessOK is already offering a range of products for these platforms. No fewer than 16 different programs are available. Many of them are training programs. Pocket Champion is an example of a chess playing program on the Pocket PC with a range of options. We even offer programs for mobile devices to play on the ChessOK internet server, The Playing Zone. Buy Pocket Chess Opening InstructorPocket Chess Opening Instructor – is an interactive tutorial for Pocket PC for intermediate players. This is a perfect opening manual. The program features a theoretical review of all the chess openings. Buy Chess Champion for SymbianChess Champion for Symbian – Playing program “ChessChampion” for Smartphone is a universal chess partner both for amateurs and professional players. The program possesses a wide range of functions. More products in the category (click to expand)
Opening Encyclopedias In this category we offer a general opening reference along with several products, each focusing on a single opening. These have been prepared by our chess masters, including GM Alexander Kalinin. Buy Chess Openings 2009Chess Openings 2009 – is an excellent tool for studying the openings, building your personal opening repertoire and practicing the openings against a chess engine or on the ChessOK Playing Zone. Buy Modern Chess Openings SetModern Chess Openings Set (5 CDs) – This Set includes five excellent programs for five popular openings: Sicilian Defense, French Defense, Kings Indian Defense, Slav Defense, 1…Nc6!? The each program allows analyzing while playing against the built-in chess program Crafty as well as editing variations, searching for games in the database. More products in the category (click to expand)
Game Collections We have published several annotated game collections of the world champions. Our current catalog includes Alexander Alekhine, Emanuel Lasker, Mikhail Tal, Jose Raul Capablanca, Mikhail Botvinnik and Boris Spassky. Buy Five World ChampionsFive World Champions – The Five World Champions program comprises of 5 wonderful programs devoted to five great chess champions: Emanuel Lasker, Jose Raul Capablanca, Alexander Alekhine, Mikhail Botvinnik and Mikhail Tal. Buy Mikhail Tal - 8th World ChampionMikhail Tal - 8th World Champion – The most complete collection of Tal’s games ever compiled. Contains 2,592 games, covering the entire career of the most brilliant attacking chessplayer in history. More products in the category (click to expand)

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