15x15 puzzle
Time:
8
7
7
1
7
4
1
4
2
2
1
1
3
1
3
1
1
3
1
1
2
3
1
3
2
5
5
1
3 6
3 2
4 2
4 4
4 10
15
6 3
1 4 1
3 2 2
Opacity:
Original image
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