20x15 puzzle
Time:
2
2
4
4
2
2
1
1
9
11
10
10
8
1
7
2
2
1
3
8
8
1
7
2 2
1 7
1 1 3 3
3 2 6 3
17
2 11
2 6 4
1 6 3
4
4
4
4
3
1
Opacity:
Original image
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