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