Privacy information

TJK-Chess stores account identifiers, course progress, games, analyses and training attempts only where needed to provide the selected features. Passwords are stored only as one-way password hashes; authentication and confirmation tokens are also stored as hashes. Operational logs contain request IDs and technical error information; credentials are redacted.

Sign in with Google

When you choose Google sign-in, Google provides TJK-Chess with a verified email address, display name, a stable Google account identifier and, where available, a profile image. TJK-Chess does not receive or store your Google password. The Google identifier is used only to link future Google sign-ins to the same TJK-Chess account.

Your choices

You can use many local features without an account. Signed-in users can add or change a password, connect or disconnect Google where another sign-in method remains available, and request account deletion from the account dialog. Deletion removes account-linked sessions, progress and private content according to the server’s deletion routine.

Hosting and contact

Before public launch, replace this paragraph with the actual controller name, postal address, contact email, hosting provider, retention periods and third-party services, including Google Identity Services.

Cookies and local storage

Essential session and anti-forgery cookies and browser storage are used for login, display settings and local progress. TJK-Chess does not require advertising cookies.