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