examples/metro-2012-06-18.sudoku


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0 5 0  1 0 0  7 0 0
0 0 2  0 3 0  9 0 0
8 0 0  0 9 0  0 0 5

0 8 0  9 2 0  0 0 0
7 0 0  8 0 0  5 3 0
0 3 6  4 0 7  1 0 0

0 6 0  0 4 0  0 0 0
2 0 8  0 0 0  6 0 3
4 0 0  0 1 2  0 5 0