20x15 puzzle
Time:
4
2
4
3
2
3
1
1 2 1 1
1
1
2
8 9 9 11 12 4
6
1
5
5 5 3
2
2  1
2  3
2  2  4
6
8
1  6
2  5
2  6
8
1  10
2  10
2  9
1  4
4  1
You might wish to visit the archives, if you want more.