15x20 puzzle
Time:
20
20
20
20
20
6
10
3
9
2
9
1
9
8
1
8
1
7
1
6
5
6
6
6
6
6
6
7
8 3
9
5
5 2
5 2
5 2
6 2
9 2
11 1
12
15
15
15
15
15
15
Opacity:
Original image
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