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