15x15 puzzle
Time:
5
2
7
2
7
2
1
7
2
11
2
1
6
1
7
2
6
2
2
1
3
1
2
1
1
2
1
1
1
1
1
4
1
4
1
1
1
4
1  2  1
6
7
8
8  1
8  3
6  1  2
5  4  2
2  5  1
 
5  2
15
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