Sudoku Proofs

As well as producing our own proofs, we also accept (and encourage!) submissions from players. If you have a proof that you would like to share, then send us an email so we can work something out.
For more sudoku proofs check out Bruno's Sudoku Proofs
Check out the Sudoku Blog     Subscribe
Every digit from 1 to 9 must appear:
  • In each of the columns,
  • in each of the rows,
  • and in each of the nine boxes.
  • Some Handy links are:
  • The Wikipedia entry on Sudoku.
  • A Solver.
  • How to make your own.
  • Members Get Goodies!
    Become a member and get heaps of stuff, including: stand-alone sudoku game, online solving tools, save your times, smilies and more!
    Welcome our latest Members
    Vlk from Prahy
    wagdi from Cairo Egypt /FL. USA
    Remy Reinker from Prospect NSW
    Member's Birthdays Today
    cheshcat2003 from Brisbane, Garry from Mosselbaai, lobowa from south africa
    Friends currently online
    Want to see when your friends are online? Become a member for free.

    Network Sites

    Melbourne Bars Find the Hidden Bars of Melbourne
    Free Crossword Puzzles Play online or print them out. 2 new crosswords daily.
    Jigsaw Puzzles Play online jigsaw puzzles for free, with new pictures everyday
    Sliding Puzzle Play online with your own photos
    Flickr Sudoku Play sudoku with pictures from Flickr
    Kakuro Play Kakuro online!
    Wordoku Free Wordoku puzzles everyday.
    Purely Facts Test your General Knowledge.
    Pumpkin Carving Pattern Free halloween pumpkin carving patterns.