Terms of use

Last updated when this page was written. Review before publishing.

Using the site

Sudoku Zone is free to play. You may use it for personal enjoyment and for teaching. Please do not attempt to disrupt the service for other people or to redistribute the site as your own.

Puzzles

Puzzles are generated by this site. Each one is verified to have exactly one solution before you see it. Sudoku grids are not themselves copyrightable, and you are welcome to copy a puzzle out and solve it on paper.

No warranty

The site is provided as-is. It may be unavailable, and it may contain mistakes. The “Explain next step” feature reasons about the board in front of it and will say so when it cannot find a move — but it is software, and software has bugs.

Payments

There is nothing to buy at the moment. If a paid subscription is introduced, its price, billing terms, cancellation policy and refund policy will be published here before any payment can be taken.

Changes

These terms may change as the site grows. Material changes will be noted on this page.

Contact

Questions: contact@sudokuzone.app