20x15 puzzle
Time:
8
8
8
7
2
2
2
1
2
1
1
2
1
2
1
2
1
3
1
3
1
4
1
4
1
5
1
5
7
7
7
8
3 1
20
7 4
4 6
4 8
4 10
5 13
20
Opacity:
Original image
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