20x15 puzzle
Time:
6
5
6
5
6
5
6
5
6
6
7
6
4
5
2
5
2
5
2
5
5
5
5
5
4
4
4
4
3
1
6
6
6
7
10
10
2
2
14
18
19
19
20
Opacity:
Original image
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