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