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