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