20x15 puzzle
Time:
13
12
12
11
10
9
7
5
2
1
1
1
2
3
2
2
3
3
1
4
4
4
6
13
13
13
13
14
1
1 5
3 7
4 9
5 11
6 9
6 5
7 5
7 9
8 9
8 8
8 7
9 2 6
13 6
Opacity:
Original image
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