Privacy Policy

Last updated: October 30, 2026
Provider: chessmanor.com
Contact: contact@chessmanor.com

This policy explains how chessmanor.com (“we”, “us”) handles data about you when you use Chess (the “Site”).

In short: the Site needs no sign-up, and we do not collect your name, email address or any contact details; your game data stays in your own browser, and games against the computer are calculated there too. The Site has no ads and uses no cookies, analytics or tracking tools.

01Data stored on your device

Game settings (White, Black or Random, and the difficulty), whether you dismissed the language prompt, and whether you muted your opponent in the game chat are kept in your browser's local storage (localStorage).
The files the computer opponents need (the Maia neural network model and the Stockfish engine) are downloaded the first time they are used and then kept in your browser's cache (including Cache Storage), so they do not have to be downloaded again. These are program files and contain no data about you.
The game page registers a service worker. It keeps the Site's own script files and the last game page that loaded successfully in your browser's Cache Storage, so after one visit the game can open even without a connection. It collects and sends nothing and stores only files from this Site; clearing the Site's data in your browser settings removes it.
When you play the computer, all of the AI's calculation happens in your browser. Your moves are never sent to our servers. What the computer says in the chat is also generated in your browser, and anything you type in the chat is not sent anywhere either.
None of this data is sent to us. You can delete it at any time by clearing the Site's data (including its cache) in your browser settings.

02Technical data our servers receive

As with any website, when your browser requests a page or file it sends technical data such as your IP address, browser type, the requested URL and the time.
This data is handled by our hosting provider, Cloudflare, and may be kept briefly in access and error logs. It is used only to keep the service running, protect it from attacks and fix bugs — not to identify you personally, and not for advertising.

03Cookies

The Site uses no cookies at all: no advertising cookies, no analytics cookies and no third-party cookies. The language you choose is carried in the URL itself (for example /en/).

04Third-party services

Cloudflare: hosting and content delivery. Cloudflare's handling of the technical data above is covered by its privacy policy.
The files for the computer opponents, such as Maia and Stockfish, are served by the Site itself. The Site loads no other third-party scripts, fonts, ads or social plugins.

05What we don't do

We do not sell, rent or share your data with any third party.
We do not build user profiles or track you across websites.

06International transfers

Cloudflare runs a global network, so technical data may be processed outside the country where you live. The providers we use offer an appropriate level of data protection.

07Your rights

Under applicable law (such as the GDPR or Taiwan's Personal Data Protection Act), you may ask to access, correct or delete data about you, or to restrict or object to certain processing. Data stored on your device you can delete yourself; for anything else, email contact@chessmanor.com and we will reply within a reasonable time.

08Children's privacy

The Site is suitable for a general audience and collects no personal data from anyone, children included.

09Changes and contact

When this policy changes, the updated version will be posted on this page with a new “last updated” date. If we ever add features such as online play or accounts, we will update this policy before they launch. For any privacy question, contact contact@chessmanor.com.