Privacy Policy
What we collect
- Launch list: if you leave your email on the coming-soon page, we store the email, the date, your browser language and country, only to send you a launch email. You can unsubscribe with one click.
- Account: email, username, password (stored hashed, never in clear text), year of birth, language and the settings you choose.
- Chess activity: games, moves, ratings, puzzle results, course progress and the computer analysis of your games. Games are public, like at any chess site.
- Payments: whether you have a Premium subscription, its dates and the payment provider's reference. The payment itself is handled by Stripe, PayPal or QPay under their own privacy policies; we never receive your full card number.
- Technical: IP address, browser type and the pages you open, kept in server logs for security and to fix problems.
Why
To run the service (play, learn, pay), to keep play fair (our anti-cheat looks at move quality and timing), to answer your support requests, and to send you the emails you asked for. We do not sell personal data and we do not show third-party ads.
Who else sees data
Only the providers we need to run the site: hosting and content delivery (Cloudflare and our server host), payment providers (Stripe, PayPal, QPay), and our email provider for the emails we send. Each gets only what it needs for its job.
Cookies
We use a login cookie and the browser's local storage for your settings. No advertising or cross-site tracking cookies.
Children
The service is for people aged 13 and over. We do not knowingly collect data from younger children; if that happened, write to us and we will delete it.
Your rights
You can see and change your account data on the Account page, export your games, and delete your account. For anything else (a copy of your data, a correction, a complaint) write to support@chesskhan.com. Depending on where you live, the law may give you further rights, and we honour them.
Retention and security
Account data is kept while the account exists and up to 30 days after deletion (backups). Public games stay in the database without the name after deletion. Payment records are kept as long as tax law requires. Data travels encrypted (HTTPS).
Changes
If this policy changes in a way that matters, we will tell you by email or on the site.