27x15 puzzle
Time:
4
6
5
7
7
6
6
6
2
1
9
9
6
6
5
7
6
7
7
2
2
8
9
12
9
1
2
2
2
2 3
2 4
2 2 1 2 4
2 5 4 4 4
8 14
23
18 3
7 14
21
Opacity:
Original image
You might wish to visit the
archives
, if you want more.