idnr: 3399
5 1
7 8 3 4
7
6
2
3 1 4
2 8 6
5
Difficulty: Medium
idnr: 6990
8 4 7
3 8 1
7
5
2
3 5
4 1
6 2 6
Difficulty: Medium
idnr: 6925
4 7 3
7 9 1
6
8 5
4
8 3 5 9 2
6 2 1
Difficulty: Medium
idnr: 8450
8
7 2 6 1
3
5 3
1 4
8
7 6 4
5 2
Difficulty: Medium