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

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

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