15x23 puzzle
Time:
13
3
6
8
11
14
16
18
9
1
1
2
4
1
4
2
2
1
2
2
1
1
2
3
4
5
1 6
1 6
2 5
2 5
2 5
1 5
1 6
7 1
8
7 2
11
9 2
7 2 2
Opacity:
Original image
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