15x21 puzzle
Time:
5
4
5
4
4
6
4
4
5
2
4
2
4
1
4
1
4
1
5
5
5
5
5
4
5
3
5
5
15
15
15
15
2 1 5
1 1
1 2 1
3 10
3 2 5
3 5
3 2 1
Opacity:
Original image
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