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