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

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Aquarium 2019 with Houdini 6 Release!
Aquarium 2016: Tree Generation Strategies
ChessOK Aquarium – Ultimate Analysis and Pla...
Chess Engine Management in Aquarium
Customizing Your IDeA Tree Configuration
CQL Queries in Chess Assistant
Annotating Games with Chess Assistant 10
Game analysis with Chess Assistant 10
Infinite Analysis with Chess Assistant 10
Chess Assistant Objects
World Chess Olympiad 2010
Getting More Out of IDeA in Aquarium 2010
New Rybka Aquarium Opening Book
Champions match: Kasparov – Karpov
Back with a Vengeance
Training with Peshk@: ELO 2400+ in two years
Dadi Jonsson’s article on CT-ART: Mating Com...
World Chess Olympiad 2010
Champions match: Kasparov – Karpov
Dadi Jonsson «Peshk@ Training Courses»
Play Chess on Your Mobile
Chess King with Houdini 2
Dadi Jonsson’s article on CT-ART: Mating Com...
Play chess Online.
Refuting Fischer
ChessOK.com chess shop. Chess equipment.
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CQL Queries in Chess Assistant

Buy Chess Assistant 10 Chess Query Language (CQL) was designed by Gady Costeff and Lewis Stiller to specifically search for games, problems and studies that match certain themes.
It is extremely powerful and CQL can find much more complex themes than traditional chess database systems.
The current version of Chess Assistant, as well as Rybka & Chess Openings 2009, offers all the power of CQL in an integrated environment and brings several advantages, including:
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Game Analysis with Rybka Aquarium

Rybka 3 Aquarium logotype Rybka Aquarium offers new analysis methods as well as improvements to older methods.
In previous ChessOK Cafe columns we examined Interactive Deep Analysis (IDeA) and Infinite Analysis .
This month we take a look at Game Analysis.
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Creating Tree Configurations

Rybka 3 Aquarium logotype Last month’s column was an introduction to tree configurations in Rybka Aquarium.
This month we’ll have a closer look at how tree configurations are created.
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Annotating Games with Chess Assistant 10

Buy Chess Assistant 10 Previous columns have dealt with using the chess engine to annotate games in Chess Assistant 10, but this month we’ll be focusing on the do-it-yourself variety.
When it comes to learning from your games, your own personal annotations are more important than an engines analysis. It forces you to think for yourself, instead of just accepting whatever the program suggests.
Once your analysis is complete, then you can compare it with the engines results to either verify your ideas or find those that you missed.
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Tactics Training with Convekta software

Buy Chess Tactics for Beginners By Georgi Castaneda
The idea of the article is as follows: it is very important to study tactics and it is better to do so with the software of our company.
Why shall we study tactics?
One of the most important components in chess player’s skills is tactical vision. It’s impossible to achieve high results without mastering this art.
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Play chess Online.

ChessOK Playing Zone Screenshot (click to enlarge) Let’s come back to the past for a moment, when there were no Internet, no post services, no telephones and no other ways of long distance communication. That was a really hard time for the chess players who wanted to find good opponents. People had to play with the same players all the time and that was boring and even annoying.
The appearance of the modern post service exerted a great influence upon the chess players. It created an opportunity to play against the opponents who were hundred and thousand miles away! But this was an absolutely different type of playing chess, when a player had a day, a week or even a month to think over the next move, so that one game could last for many years.
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Introduction to Tree Configurations

Rybka 3 Aquarium logotype Many chess software users are familiar with electronic opening books.
Chess players use them to study openings and build their repertoire, freestyle players use them for a similar purpose, and engine testers use them to ensure balanced positions out of the opening, etc.
Opening books are one application of chess trees, but Aquarium uses trees for many other purposes and takes this concept to a new level with its tree configurations.
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Game analysis with Chess Assistant 10

Buy Chess Assistant 10 In the two previous columns we examined infinite analysis with Chess Assistant 10. Infinite analysis is a very useful tool, but it is best suited for analysis of a limited number of positions. One of the drawbacks of infinite analysis is that as soon as you want to examine more than one position it turns into a manual process where you have to make the decision when a position has been analyzed deeply enough and then manually move on to the next position and so on. For the improving player it is more efficient and useful to have all phases and every move of the game analyzed automatically. Each tournament game you play should be subjected to such analysis and stored for future reference after trying to learn as much as possible from the game and its analysis. Just remember that engine analysis is not a replacement for your own analysis. Always start by entering your own thoughts about the game and only then analyze it with Chess Assistant.
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