Houdini Aquarium 2019 & ChessOK Aquarium 2023
ChessOK 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

ChessOK.com » Daily Prize Tournaments
In the ChessOK playing zone, several tournaments with prizes are held daily. The whole list is here:

Daily Prize Tournaments (GMT everywhere)
— 10:00 Team cup: 3 minutes, 3 boards
— 12:00 Individual cup for 1-minute play
— 15:00 Individual cup for 3 minutes
— 17:00 Team cup for 3 minutes, on 5 boards.
— 19:00 Individual cup for 1 minute
— 22:00 Team&individual cup for 3 minutes. Teams are counted for three best players of the team.
— 00:00 Individual night cup for 3 minutes.

League tournament (the most popular tournament)
Takes place on Wednesdays, at 17.00 GMT, eight matches pro season, the timetable is accepted every time before the season.

Saturday/Sunday:
15.00 GMT, Team cup for 1 minute at 5 boards.

Sunday
14:00 Sunday tournament with the year membership as the main prize.

The last month’s Saturday
16.00: “ChessOK” Open Championship

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