20x15 puzzle
Time:
1
1
2
2
2
3
2
1
2
3
5
6
1
1
1
15
15
15
14
14
9
9
8
7
7
6
5
5
6
5
5
6
3 5
5 5
6 4
Opacity:
Original image
You might wish to visit the
archives
, if you want more.