Professional Chess Software Chess Assistant for Windows and ChessOK Aquarium
Chess Assistant has often been the first program used by many grandmasters in Eastern Europe. It is the most powerful chess database and analysis program out there. It’s the optimal place to store your games and analyze them. You can also play and manage several databases, all at once. It has now been translated to 5 main languages: English, German, French, Spanish, Italian and is available for Windows computers.
December 2025: AVAILABLE TODAY! We just received from ChessOK the newest version of Chess Assistant 26 for Windows PC’s. It includes the new HugeBase game database of over 9 million games. You also get free a 1-month pack of 130 complete courses MAXIMUM 130+ of Chess King Learn, that work on all platforms, PC/Mac, Android/iOS. At the moment we added it to our sister shop Chess King University, you can get it there today.
We hope to have soon ChessOK Aquarium 2026.
When you buy select either the full program or the discounted upgrade for people who already have a previous version of Chess Assistant on their computer. No need to enter any coupon code as the lowest current coupon code has already been applied to the products.
