Houdini Aquarium 2019 & ChessOK Aquarium 2021
ChessOK Aquarium 2021 is a new powerful analysis, database and chess publishing tool, powered by the world's strongest chess engines and 7-piece Lomonosov Tablebases.

ChessOK Aquarium 2021 €35.95
Houdini 6 Aquarium 2019 €53.95

ChessOK.com » Special Deals: 50% OFF, 5-in-1 AND MORE!
Special Deals: 50% OFF, 5-in-1 AND MORE! 09 June 2021

The following special offers are currently available.

OFFER 1 – MULTIPLATFORM: You can buy our training courses (such as CT-ART 6.0 and others) in three different versions:

1. Multiplatform for 5 systems: Windows standalone, Web (any browser), iOS, MacOS (v.10.15+) and Android OS** – 30% off!
2. Windows only version: the classic standalone course in Peshk@ interface – 50% off!
3. Upgrade your Windows only version to work on 4 more platforms (see above) – 50% off!

**Note: You will receive the activation instructions for Windows immediately and for other version – within 2 days after purchase.

OFFER 2 – BOOKS: Buy any two books and get a thirds one as a gift!

 

Note: Specify the bonus products(s) you want to receive in the comments field when filling the order form.

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!

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.

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