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