15x15 puzzle
Time:
4
1
6
14
1
2
5
8
14
14
6
4
1
1 4
2 4
2 4
3 4
2 4
1 3
2 3
1 4
2 4
2 4
2 4
2 3
3 4
3 3
Opacity:
Original image
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