20x15 puzzle
Time:
12
12
11
10
6
2
6
1
5
4
3
1
3
5
8
9
10
13
12
13
15
15
2 1 2
3 1 2
4 2 8
8 8
9 9
20
9 10
6 10
5 9
4 8
6 7
5 6
5
4
3
Opacity:
Original image
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