15x18 puzzle
Time:
1
4
6
9
1
8
2
7
2
5
2
1
2
8
2
1
1
7
6
2
6
2
8
6
1
2 2
4 1
9
4 2 2
4 1 4
6 6
5 6
5 6
3 1 3
2 1 2
1 3 5
3 5
Opacity:
Original image
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