CIT 591 Sudoku puzzles
Fall 2011 , David Matuszek

The following puzzles can probably be solved by your program:

 ``` [ [ 0, 8, 0, 0, 0, 0, 2, 0, 5 ], [ 7, 0, 1, 4, 0, 0, 0, 8, 9 ], [ 9, 0, 0, 3, 5, 0, 0, 1, 0 ], [ 0, 0, 9, 0, 0, 7, 6, 3, 0 ], [ 0, 0, 2, 0, 0, 9, 7, 0, 0 ], [ 0, 7, 8, 5, 0, 0, 0, 0, 0 ], [ 0, 6, 0, 0, 4, 5, 0, 0, 3 ], [ 2, 9, 0, 0, 0, 6, 5, 0, 1 ], [ 4, 0, 5, 0, 0, 0, 8, 7, 0 ] ] ``` ``` [ [ 0, 1, 6, 0, 0, 9, 0, 0, 2 ], [ 0, 0, 0, 0, 3, 1, 0, 4, 0 ], [ 8, 7, 0, 5, 2, 0, 0, 1, 0 ], [ 0, 0, 9, 0, 8, 0, 2, 0, 1 ], [ 5, 0, 0, 6, 0, 7, 0, 0, 9 ], [ 4, 0, 1, 0, 5, 0, 3, 0, 0 ], [ 0, 4, 0, 0, 7, 8, 0, 9, 5 ], [ 0, 9, 0, 3, 6, 0, 0, 0, 0 ], [ 2, 0, 0, 1, 0, 0, 6, 3, 0 ] ] ``` ``` [ [ 0, 0, 4, 0, 0, 0, 0, 6, 7 ], [ 3, 0, 0, 4, 7, 0, 0, 0, 5 ], [ 1, 5, 0, 8, 2, 0, 0, 0, 3 ], [ 0, 0, 6, 0, 0, 0, 0, 3, 1 ], [ 8, 0, 2, 1, 0, 5, 6, 0, 4 ], [ 4, 1, 0, 0, 0, 0, 9, 0, 0 ], [ 7, 0, 0, 0, 8, 0, 0, 4, 6 ], [ 6, 0, 0, 0, 1, 2, 0, 0, 0 ], [ 9, 3, 0, 0, 0, 0, 7, 1, 0 ] ] ``` ``` [ [ 0, 0, 0, 2, 0, 3, 9, 6, 0 ], [ 2, 0, 6, 0, 0, 7, 0, 3, 0 ], [ 7, 0, 0, 1, 5, 0, 8, 0, 0 ], [ 3, 6, 0, 0, 7, 2, 5, 0, 1 ], [ 0, 0, 0, 0, 0, 0, 0, 0, 0 ], [ 4, 0, 8, 6, 0, 0, 3, 7, 9 ], [ 0, 0, 7, 0, 6, 8, 0, 0, 3 ], [ 0, 3, 0, 7, 0, 0, 4, 0, 6 ], [ 0, 1, 2, 9, 0, 4, 0, 0, 0 ] ] ```

The following puzzles probably cannot be completely solved by your program.

 ``` [ [ 0, 6, 0, 1, 0, 4, 0, 5, 0 ], [ 0, 0, 8, 3, 0, 5, 6, 0, 0 ], [ 2, 0, 0, 0, 0, 0, 0, 0, 1 ], [ 8, 0, 0, 4, 0, 7, 0, 0, 6 ], [ 0, 0, 6, 0, 0, 0, 3, 0, 0 ], [ 7, 0, 0, 9, 0, 1, 0, 0, 4 ], [ 5, 0, 0, 0, 0, 0, 0, 0, 2 ], [ 0, 0, 7, 2, 0, 6, 9, 0, 0 ], [ 0, 4, 0, 5, 0, 8, 0, 7, 0 ] ] ``` ``` [ [ 9, 0, 0, 0, 0, 8, 0, 0, 0 ], [ 0, 0, 0, 0, 3, 2, 0, 0, 0 ], [ 6, 8, 0, 9, 0, 1, 0, 7, 0 ], [ 8, 0, 9, 5, 2, 0, 0, 3, 0 ], [ 2, 0, 0, 0, 0, 0, 0, 0, 5 ], [ 0, 4, 0, 0, 9, 3, 7, 0, 8 ], [ 0, 2, 0, 3, 0, 9, 0, 6, 4 ], [ 0, 0, 0, 2, 8, 0, 0, 0, 0 ], [ 0, 0, 0, 6, 0, 0, 0, 0, 3 ] ] ```