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