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