15x15 puzzle
Time:
1
3
4
1
3
2
3
2
3
3
3
2
2
4
2
4
2
7
4
2
7
6
5
5
1
10
10
1 8
1 8
6 1 4
15
15
Opacity:
Original image
You might wish to visit the
archives
, if you want more.