NanoZero
Legal notice & privacy
NanoZero is an open-source AlphaZero chess-engine project, trained by the community. The nanozero.org site is designed to respect your privacy by default.
Courtesy translation — the French version is legally authoritative.
Site publisher
nanozero.org is published on a non-professional basis (a personal open-source project, with no commercial activity). Under Article 6, III-2 of French Act No. 2004-575 (LCEN), the non-professional publisher has provided their details to the host and can be reached at contact@nanozero.org.
Host
- Company
- OVH SAS (OVHcloud)
- Address
- 2 rue Kellermann, 59100 Roubaix, France
- Website
- ovhcloud.com
No cookies, no trackers
The site uses no cookies and no tracking/analytics tools. Fonts and libraries are self-hosted: no request is sent to any third-party service during your visit. Playing against Nano and analyzing games run entirely in your browser: those computations are never sent to a server.
Games played against Nano: anonymous saving
When you play a game against Nano (the "Play" surface), it is saved automatically and anonymously so you can review it and share it via a link.
- What is kept: the game's moves (PGN, with neutral names "Player" / "NanoZero"), the level, the result, the network version, and coarse, anonymous technical information (mobile/desktop device type, runtime engine, order-of-magnitude hardware) used solely to diagnose play quality and produce statistics.
- What is never kept with a game: your IP address, your detailed "user-agent", your graphics-card model, your exact hardware specs, your screen, your time zone — nor any data that could identify you.
Contributing to training
If you choose to contribute (the "Contribute" surface), your browser plays training games and sends only the moves of those games, anonymously. No account, no sign-up, no personal data.
Server technical logs
Like any web server, nanozero.org keeps technical access logs (IP address, requested resource, timestamp) for security and proper operation. These logs are on short automatic rotation, are never cross-referenced with games or contributions, and are not used for any profiling.
Retention and deletion
Shared games are kept indefinitely (a shared link stays valid), unless deletion is requested. To have a game deleted, write to us with the game's link.
Contact us
Question, suggestion, deletion request — one single address, a human reply.