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