Privacy policy
Last updated: July 14, 2026
Scope
The service does not upload PGN, FEN, comments, repertoires or training results to its own server. Settings may be stored in localStorage and deliberately saved content in IndexedDB. Google advertising follows consent settings.
Local processing
The browser performs parsing, engine analysis, exports and local storage operations. Clearing browser data may remove saved items.
Third-party services
Public pages include Google AdSense. The chess engine and libraries are served from this domain.
Data removal
Use the local library controls or browser site-data settings.