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