Privacy policy

Publisher, publication director and contact

Optional analytics

Google Analytics 4 only loads if you accept analytics storage in InMobi. Its purpose is to measure visits and general site use, based on your consent, which you can withdraw using “Manage privacy” without losing access to the game. Google receives technical data, approximate location, device information, cookie identifiers and the page path and language. Scroll, outbound clicks and downloads are also measured, including the public destination link URL. The page URL is sent without query or fragment; we do not send full referrers, boards or moves. This integration disables Google Signals and advertising personalization signals. Google may process data outside the EEA under its terms and transfer safeguards. See https://policies.google.com/privacy and https://business.safety.google/adsprocessorterms/.

Privacy choices and advertising

InMobi Choice receives technical request data and keeps your choices to collect and respect consent. Its panel identifies providers, purposes and legal bases; optional advertising technologies rely on the applicable permissions. When AdSense is enabled and the permissions are met, Google receives technical ad-request data and may use cookies and identifiers for advertising and measurement in line with your choices. These providers may process data outside the EEA under their terms and transfer safeguards. Sudoku boards are not sent in consent events.

Progress in this browser

Your puzzle, selected cell and undo history are kept using localStorage. The game code does not send them to a server or link them to an account. They are shared across languages on the same origin, but not across devices. There is no automatic expiry: they remain until replaced, site data is cleared or the browser removes them.

Website delivery and security

Cloudflare hosts and delivers this website. When receiving requests, it may process your IP address, requested URL, browser information and other technical data to deliver files, protect the service and diagnose problems. Website responses may also enable network error reports sent to Cloudflare.

The publisher’s legitimate interest in providing an available, secure website is the basis for technical processing under their responsibility. Technical retention is limited to what is needed to deliver the service, investigate incidents and meet legal obligations; the provider’s retention terms are described in its privacy information. You can ask about this processing using the contact email.

When you email us

If you send an email, the publisher receives your address and the content you provide to reply and handle your request, based on their legitimate interest in doing so. You do not need to send sensitive data or a copy of your puzzle. Email is voluntary and is not needed to play.

Correspondence is deleted within 12 months of the last exchange unless a legal obligation or claim requires longer retention. The publisher and mailbox provider are involved in this exchange; this page has no contact form and does not send messages automatically.

Providers and transfers

Cloudflare operates an international network and may process data outside the European Economic Area. Its privacy information describes the recipients and transfer mechanisms it uses. Applicable terms and safeguards depend on the service contracted; we do not claim that all data remains in the EU. Google Analytics is described in the optional analytics section. The CMP is InMobi Choice and the advertising integration is Google AdSense.

Your rights

You can email the contact shown to request access, rectification, erasure, restriction, objection or portability where applicable. Each right depends on legal conditions and the data actually available. You may complain to the CNIL or the competent data protection authority. The publisher cannot recover a puzzle stored only on your device.