15x15 puzzle
Time:
5
1
2
2
1
4
4
1
3
4
2
4
5
6
6
6
4
4
4
4
3
3
1
4
5
4 1
1 2 1
1 3 1
2 4
2 8 1
1 11
11
2 11
3
Opacity:
Original image
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