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