15x20 puzzle
Time:
2
1
1
1
3
3
4
6
4
3
12
2
1
14
1
14
3
5
2
4
10
5
5
2
1 3
3
1 4
1 2
3 1
4
8
8
5 3
2 4
1 5
6
7
7
4 2
3 2
2 1
2 1
6
6
Opacity:
Original image
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