Privacy Policy

About this site

Sudoku 2400 is a site where you can play Sudoku for free. No login or registration is needed.

Your play records

Your cleared puzzles and in-progress boards are saved only on your device (in your browser's storage). They are not sent to any server.

Analytics

To improve the site, we use Google Analytics. Using cookies, it tallies page views, device type, approximate region, how visitors found us (such as search), and the number of puzzles started and cleared. We do not collect information that identifies individuals, such as names or email addresses.

How to opt out

You can stop the tallying by disabling cookies in your browser settings or by using the Google Analytics opt-out add-on. The site works just the same if you do.

Ads and third parties

We do not show ads. The tallied results are used only to improve the site, and we do not provide them to any third party other than Google.

Changes

This policy may be changed without notice.

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