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