Last updated October 29, 2026.
Chessicous is free to use. By using it you agree to these terms.
Your account
- Keep your password safe. You’re responsible for activity on your account.
- Pick a username that isn’t offensive and doesn’t impersonate anyone. We may rename or remove accounts that break this rule.
- Don’t try to cheat the leaderboard, overload the service, or break into other accounts.
Content
Lessons and site design are © Chessicous. Stockfish is licensed under the GNU GPL v3, and puzzle and opening data come from Lichess under CC0; see About for details.
No warranty
We work hard to keep lessons accurate and the site running, but Chessicous is provided “as is” without guarantees. We may change or discontinue features.
Contact
Questions? hello@chessicous.com