15x26 puzzle
Time:
2
1
1
2
1
4
4
2
5
4
4
2
5
4
4
2
5
5
5
2
5
21
21
5
3
4
5
1
2
2
1
1
2
2
1
1
1
1
1
1
1
1
1
4
7
9
10
7
2
9
9
7
6
4
5
7
9
2
4 1
9
8
8
9
6
4
Opacity:
Original image
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