Solution:

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

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

5,1,9; 2,8,6; 4,7,3;
4,7,2; 3,1,9; 5,6,8;
8,6,3; 7,4,5; 2,1,9.