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