15x20 puzzle
Time:
1
1
2
1
2
5
2
3
4
10
1
3
3
1
1
7
1
9
5
1
4
3
8
8
8
8
7
1 1
1
1 1
1
1 2
1
1
1
4
2 1 5
5 6
5 6
1 12
2 3 5
11
1 13
15
Opacity:
Original image
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