The three-number rule, also known as the rule of thumb, is that a digit must appear three times per chute but only once per row, column and box. Remember, a chute refers to any three adjacent ...

All the Latest Game Footage and Images from Sudoku 50! For Beginners Sudoku Student brings you the first Nintendo DSiWare sudoku experience with all the features you’d expect. The Wii Virtual Console ...

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