21x15 puzzle
Time:
7
9
7
9
6
1
7
1
8
7
6
6
6
4
6
8
9
8
1
7
2
1
1
1
2
2
1
3
3 5
1 6 6
2 14
17
17 2
17 1
4 6 4 1
5 2 2 2 1
4 2 1 3
2
Opacity:
Original image
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