Instant sudoku solver!
Input your sudoku puzzle. Replace blank numbers with "_". You can use spaces and tabs to help you format it.
Ex:
8 _ _ _ _ _ _ _ _
_ _ 3 6 _ _ _ _ _
_ 7 _ _ 9 _ 2 _ _
_ 5 _ _ _ 7 _ _ _
_ _ _ _ 4 5 7 _ _
_ _ _ 1 _ _ _ 3 _
_ _ 1 _ _ _ _ 6 8
_ _ 8 5 _ _ _ 1 _
_ 9 _ _ _ _ 4 _ _