Houdini Aquarium 2019 & ChessOK Aquarium 2023ChessOK Aquarium 2023 is a new powerful analysis, database and chess publishing tool, powered by the world's strongest chess engines.
ChessOK Aquarium 2023 €39.96
Houdini 6 Aquarium 2019 €53.95
Contact Us
Our aim is to help you as quickly and efficiently as possible. Do you have a question, comment, suggestion or a tip to pass along to ChessOK? Contact our staff directly via the links provided below. Your questions may be answered between the hours of 9 a.m. – 5 p.m. MSK/MSD, Monday through Friday. For immediate answers to frequently asked questions see: Help & Support page.| For technical support | |
E-Mail:  alex.zhuravlev@chessok.comSkype:  ChessOK
| Use contact form |
| For questions about orders and delivery | |
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E-Mail: chessassistantshop@gmail.com |
Use contact form |
| For questions about cooperation | |
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E-Mail: chessokcom@gmail.com
Skype: sergabr
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Use contact form |
Finance office
Chessking, Inc. DBA Chess King
284 Seaview Drive, Key Biscayne, FL 33149
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!
Download weekly chess database updates (containing 2000+ games) with latest tournaments and games in PGN and Chess Assistant format.
- Aquarium support resource
- Opening Tree Mode
- Play Chess against Computer
- Endgame Nalimov Tablebases
- Download Chess Games (PGN)
- Chess Puzzles