examples/metro-2012-06-08.sudoku


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0 0 0  0 5 9  0 7 6
8 0 0  4 0 6  0 0 0
6 0 0  0 0 0  8 0 9

5 2 3  0 0 0  7 9 0
0 7 6  5 0 0  0 0 2
0 0 0  0 0 7  3 0 0

2 6 4  3 0 0  0 0 0
3 0 0  0 2 0  0 1 4
0 0 1  9 0 0  0 8 0