15x15 puzzle
Time:
1
3
2
1
2
1
3
1
3
3
6
4
4
4
2
4
1
5
3
1
6
4
4
4
3
3
2
6
2 2
1 5
1 4 2
3 2
2 1
2
1
2
7
11
13
13
Opacity:
Original image
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