idnr: 3713
3 6
7 4
6 1
7 2 3
1
5 2 4
5
Difficulty: Medium
idnr: 7550
1 2 4 7
8 10 7
1 12 3
12 11
3
9
5 2 6 10
5 8
9 4 11 6
Difficulty: Easy
idnr: 4819
6 4 5
8 7
2 8 4
3 3 1
1
5 7 6
2
Difficulty: Medium
idnr: 474
3 6 2 4
8 7
2
5 8 1
7
5 4
1 6
3
Difficulty: Medium