Buy 3 chess training programs for the price of 2
Order any two training programs in our online chess shop and get a third training program absolutely free. If your order is more than $120 / €100 Euro, you will get additional present.

New CT-ART 5.0 combines three excellent courses guiding you from beginner to advanced level. » Aquarium 3.1.1 Update
Aquarium 3.1.1 Update 10 March 2009
Rybka 3 Aquarium logotypeAquarium 3.1.1 Update has been released just recently. You can download it using ChessOK Downloader or from our site: Full update from any version Incremental update 3.1.0 to 3.1.1 The download size is 17 Mb. For German version: after installing the update, delete the file <aquarium>\Aquarium.ger-rs-map. Read below what’s new in Aquarium 3.1.1 (also available in the Aquarium FAQ):


* Export whole book to HTML (into a directory, complete with classifier, index.html etc). * Shift+drag inputs dashed arrow in markers edit. * Configurable indentation for variations. * F11 toggles ‘Maximize view’. * Percents column is automatically added to each tree configuration.


* Multivariation in Infinite Analysis works OK again. * JavaScript errors fixed, so that HTML export works with Chrome. * Other changes to HTML export, including correct export of database-bound pages. * Fixed Windows 7 stack overflow bug. * Fixed bug with tool buttons in a collapsed Ribbon. * Board window can now be maximized. * Fixed crash when i-Book text search returns no pages. * Fixed Sampled Search output: some moves were wrongly reported as 1st, while they were elsewhere in the line.

What’s next

i-Book editing enhancements. Play mode revisit (yes, adjourning games!). Probably IDEA improvements.

Discussion and feedback

Thread on Rybka Forum

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.

More »