15x20 puzzle
Time:
3
1
1
1
1
1
1
3
1
6
4
8
8
6
2
2
4
1
3
1
3
3
5
7
6
7
1
10
7
1
3
3
3
2 3
5
1 5
1 3
1 3
1 2
3 1
4 1
11
1 10
15
1 3 4
5
5
6
Opacity:
Original image
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