Submited 12-31-2009 played 6628 views with 4/8 voted.
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Uh-oh. Sudoku just got more addictive..
Arrow keys - Move.
Space bar - Instant Drop.
Place all the falling numbers according to Sudoku rules. (No number can be used more than once in a row, column, or 3x3 square.) Blank tiles can be placed everywhere.