Houdini 4 Aquarium & Houdini 4 PRO Aquarium
Houdini 4 Aquarium 2014 is a new powerful analysis, database and chess publishing tool, powered by the world's strongest chess engine Houdini 4 and 7-piece Lomonosov Tablebases.

Houdini 4 Aquarium — $65.95 / €57.5
Houdini 4 PRO Aquarium supports up to 32 cores and 32 GB of hash — $94.95 / €86.3

Latest broadcast:
Online Grand Prix 2012
Round 1
ChessOK.com » Play Chess against Computer

Test you chess skills and challenge one of the strongest chess playing programs in the world! You have three levels of difficulty to select from and it’s possible to change the appearance of your chess pieces. Click New Game to choose the colour of your pieces - White or Black. To enter a move you should click on a piece and drag it to the desired square.

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.

Study chess online on our new dedicated website. There are many training courses and thousands of chess puzzles to solve.

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