The most comfortable site navigation is guaranteed with following browsers:

• Internet Explorer 6.0 or higher
• Mozilla FireFox 1.5 or higher
• Opera 9.0 or higher
• Safari 3.0 or higher

Incorrect site representation and behavior are possible for browsers listed below:

• Internet Explorer 5.5 or higher (up to 6.0)
• Opera 8.0 or higher (up to 9.0)

Older browsers are not supported.

Site functioning is possible under screen resolution 800x600, however proper representation is guaranteed only under screen resolution 800x600 and higher.

Macromedia Flash Player 8.34 or higher, or Adobe Flash Player 9.0 or higher are required to play chess.