Cookie Policy
What cookies and local storage are used for, and how to control optional advertising or analytics.
Effective and last updated: 13 August 2026What these technologies do
Cookies are small values stored by your browser. Local storage keeps device preferences. They help the platform remember secure sessions, board themes, sound settings, dismissed announcements and cookie choices.
Essential
- Secure login session cookie.
- Online-game and reconnection state.
- Security, load balancing and fraud prevention.
- Your cookie preference record.
Analytics
If enabled in the future and accepted by you, analytics may measure page use, performance and errors so the platform can improve. The current preference is stored even when no analytics provider is active.
Advertising
If game-over advertisements are enabled by the administrator, advertising cookies or identifiers are used only when you accept advertising cookies and where permitted. Declining optional advertising cookies does not prevent chess play.
Control
Use Cookie Settings in the footer or cookie banner to accept all, reject optional cookies, or choose categories. Clearing browser data may reset preferences and sign you out.