20x15 puzzle
Time:
3
1
5
1
4
1
1
15 4
9
2
6
2
5
2
4
2
3
2
3
2
3
2
3
3
3
3
3
2
3
2
4
3
5
3
6
4
8
15
2  17
20
5  2  4
4  2
4  1
1  1
2  1
2  2
2  2
3  3
4  4
5  5
19
17
18
You might wish to visit the archives, if you want more.