Copyright and Terms

This website, and all contents are the copyright of Astraware Limited.

The puzzles, techniques, explanations, solutions, graphics and images, are for personal use and entertainment only, and are not for reproduction unless stated otherwise, or written permission is granted.

You are welcome to link directly to any of the pages contained in this website.

You are welcome to use our Bulletin Edition puzzles within your publication provided that it meets the criteria listed on that page.

Using any of the puzzles directly by any site, publication, game, or other system is not permitted, unless with prior written permission.

While every effort is made to ensure that the Sudoku puzzles on this site are correct and valid, no guarantee is given that they are all correct and valid. The Sudoku on this site are all generated by Astraware’s proprietary generation code, and are not copied from any other source, however it is possible (albeit exceptionally unlikely) that a puzzle could be unintionally the same as from another source.

If you do wish to use any of the contents of this site for any purpose, then we are often willing to find a way to make that happen for you in such a way that we retain clear copyright protection of our work. Please contact us to discuss!