15x20 puzzle
Time:
4
2
5 4
4
4
6
2
6
4 5 6 7 5 5 8
1
8 12 12
4
4
4  2
5  2
1  1  2
4
2  2  4
2  3  4
13
13
13
13
7
2
 
 
 
1
1
1
You might wish to visit the archives, if you want more.