idnr: 5340
8 9 7
6 3
9
5 8 4
2 1
7
5 6 3
2 4 1
Difficulty: Medium
idnr: 3060
3 7 6
8 7 4
1
5 8 6
2 3 5
2 4
1
Difficulty: Medium
idnr: 454
2 3 5 7
3 9
8 1 9
6
4
5 1
7
6 2 8
4
Difficulty: Easy
idnr: 7467
3
5 6
2 1 4
1
4
5 3
6 2
Difficulty: Medium