15x20 puzzle
Time:
2
7
1
1
5
2
1
3
7
1
1
2
5
6
3
1
2
2
5
1
1
1
6
2
1
4
1
2
2
7
3
1
8
8
5
1
2
6
9
1 7
4 2 4
2 5 4
4 6
2 1 4
4 3
4 1 3
2 1
1 2
3 1
4
2 1
2 1 3
6
2
1 1
Opacity:
Original image
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