Interrupted, boss calling, baby crying, cop watching you?(We won't tell, be safe though) Exit Sudoku:-), and the puzzle is saved exactly as you see it! Totally FREE!! 3 levels - easy, medium, hard Smooth interface and Impressive graphics Pencil marks as notes Auto-save Undo and Redo Hints to help you complete hard ones Selected digit highlighting Incorrect entry highlighting Game Rules: Sudoku is a logic-based number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids contains all of the digits from 1 to 9.
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