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