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

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

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