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Last updated: January 2026
Sudoku Shack ("we", "us", "our") respects your privacy. This policy explains what information we collect when you use our website, why we collect it, and what choices you have. By using Sudoku Shack, you agree to the practices described here.
Playing sudoku puzzles on Sudoku Shack does not require an account, and we don't collect personal information just to let you play. If you choose to create an account, we collect:
If you subscribe to our newsletter, we collect the email address you provide for that purpose only.
We use local storage in your browser to keep you logged in between visits and to remember basic preferences. We do not use invasive tracking cookies or sell your browsing data. You can clear your browser's local storage at any time to remove this information, though doing so will log you out of any account.
We may use third-party infrastructure providers (such as hosting and analytics services) to run Sudoku Shack. These providers only process data necessary to keep the site running and are not permitted to use your information for their own marketing purposes. We do not sell or rent your personal information to advertisers.
You have the right to:
We use industry-standard measures, including password hashing and secure transport (HTTPS), to protect the information you share with us. No method of transmission over the internet is 100% secure, but we work hard to safeguard your data.
Sudoku Shack is intended for a general audience and is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us so we can remove it.
We may update this Privacy Policy occasionally to reflect changes to our practices. We'll update the "Last updated" date at the top of this page whenever we make changes. Continued use of Sudoku Shack after an update means you accept the revised policy.
Questions about this Privacy Policy or how we handle your data? Reach out and we'll help.
Email: privacy@sudokushack.com
