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