Privacy
Last updated 20 August 2026
No accounts
There is no login and no account. You can use the calculators without giving us an email.
Analysis stays in this tab
The best-move calculator runs Stockfish 18 as WebAssembly in your browser. The position is not uploaded to our servers.
What this browser stores
If you switch Light or Dark, that choice is saved under the localStorage key tcc-theme. Clearing this site's data removes it.
Analytics
No analytics scripts are installed in this codebase today. If that changes, this page will be updated.