20x15 puzzle
Time:
2 1
1
3 1
2
4
1
1
3
1
3
2
3
2
4
2
5
2
4
3
4
3
4
3
4
3
3
4
3
4
3
4
3
4
3
4
3
 
 
 
 
 
 
1
16
1  13
4  9
6  5
1  9
3  13
2  12
3  11
You might wish to visit the archives, if you want more.