15x20 puzzle
Time:
3
4
4
2
2
2
1
3
1
8
3
9
4
9
8
2
2
2
8
9
9
3
3
1
2
2
3
8
7
3 3
8
8
6 5
14
2 11
2 3 2 1
1 3
3 2
2 1
1 3
5
5
Opacity:
Original image
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