SuDoku One is a simple but addictive game.
Fill in the empty squares with numbers 1 through 9. You can't put the same number more than once in any one row, column, or 3x3 box. When the puzzle is successfully completed there will be no empty squares and each number will appear once in every row, column, and 3x3 box.
Over a million automatically generated authentic SuDoku puzzles of four levels of difficulty are provided.
Alternatively you can enter and solve your own or published puzzles