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

2 5 0  0 0 0  0 0 0
0 0 6  9 0 7  5 0 0
0 0 0  0 0 0  0 7 8

5 0 2  4 0 8  0 9 0
0 0 0  0 5 6  0 0 0
0 8 0  0 0 0  0 0 4
