15x20 puzzle
Time:
9
2
6
2
6
2
3
2
2
4
1
2
6
2
5
2
5
3
5
3
5
3
5
9
4
4
9
9
15
15
1 7
6 4
12 2
15
3 11
4 10
15
Opacity:
Original image
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