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This server helps you solve sudoku puzzles
by showing choices satisfying two simple rules: at-most-one and at-least-one
of every digit must appear in every row, column and square.
Choices that violate the at-most-one rule are omitted.
Alternatives to digits that must be chosen by the at-least-one rule are grayed.
Empty squares are dead ends. Back up the browser to make a new choice. The above rules are insufficent to solve the hardest puzzles. You can guess or look for a third rule. This program will help you find these most interesting places in the hardest puzzles without becomming a mechanical master of the simpler logic. Each step has a unique url that you can bookmark or send to friends. Use this blank page to enter new puzzles. Contribute your insights and most diabolical puzzles to the SuDoku page on my wiki. |