15x21 puzzle
Time:
21
21
21
21
21
11
9
5
1
8
9
9
4
7
2
8
7
3
1
4
9
9
10
10
8
6 1
8
6 1
6 1
6
6
5
6 1
8 1
11
11 1
13
13
13
11
12
Opacity:
Original image
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