Specials

Upgrade to ChessOK Aquarium 2026 (download)
Upgrade your ChessOK Aquarium (any previous version) to ChessOK Aquarium 2026

ChessOK Aquarium 2026 (download)
ChessOK Aquarium 2026 offers advanced analysis functions, game commenting, searching, powerful chess trees, playing, databases and much more.

Upgrade to Chess Assistant 26 Premium (download)
Upgrade your Chess Assistant (any previous version) to Chess Assistant 26 Premium.

Upgrade to Chess Assistant 26 (download)
Upgrade your Chess Assistant (any previous version) to Chess Assistant 26.

Chess Assistant 26 Premium (download)
Chess Assistant 26 Premium is a unique tool for managing chess games and databases, playing chess through the Internet, analyzing games, or playing chess against the computer.

Chess Assistant 26 (download)
Chess Assistant 26 is a unique tool for managing chess games and databases, playing chess through the Internet, analyzing games, or playing chess against the computer.

New: Dvoretsky 7 advanced courses combo
Mark Dvoretsky is well known as the world's leading chess trainer.

CT-ART 20 Maximum Chess Tactics
Ct-Art 20 is a combo of 20 tactics courses, levels 1 - 9 [Rating 200-2400]

Chess King Strategy/Endgames 10
Chess King Strategy 10 is a combo of the best 6 strategy courses and 4 endgame courses, levels 1 - 9 [Rating 200-2400]

Chess King Complete 25
Chess King Complete 25 is a combo of the most important chess courses, levels 1 - 9 [Rating 200-2400] in all areas of chess (Openings, Tactics, Strategy, and Endgames).