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