20x15 puzzle
Time:
3
11
2
11
2
10
2
12
2
1
10
1
12
13 14 14 15 7
7
13 10 4
5
4
3
9 8 9 1
1  3  2
6  5
2  6  1
14  1
4  13
18
18
10  2  3
14  3
19
18
17
14
2  9
2  8
You might wish to visit the archives, if you want more.