Sample Hard Sudoku
Enter the numbers 1 - 9 once per row, column and 3 x 3 box. If you enter more than one number per cell, the font size automatically adjusts to accommodate your pencil marks.
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Enter the numbers 1 - 9 once per row, column and 3 x 3 box. If you enter more than one number per cell, the font size automatically adjusts to accommodate your pencil marks.