0 0 0 0 0 4 0 4 0
7 0 5 0 0 0 0 0 0
0 0 0 0 0 6 0 4 0
3 0 2 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 7 0 5
0 7 0 5 0 0 0 0 0
0 0 0 0 0 0 7 0 5
0 2 0 3 0 0 0 0 0
