Here s a great way to waste your day. Don t blame me when it gets you fired. Ultimate Sudoku is a cool little flash version of the painfully popular number puzzle that is popping up in books and newspapers around the world.

The object of the game is to make sure each 3-by-3 square contains all of the numbers from one to nine and that one to nine is also found in every row and every column. It s very simple to grasp by devilishly difficult to master.

Ultimate Sudoku [Flash Game]

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