15x15 puzzle
Time:
8 5 4 2 1
2
5 3
1
4
1
2
3
1
5
1
4 6 7 9 9
15
4  10
3  4  6
3  2  8
2  1  2  4
1  1  4
1  3
1  2
4  2
 
 
 
 
 
 
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