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