15x23 puzzle
Time:
6
9
5
6
4
6
3
5
1
4
1
4
3
3
3
2
1
1
2
1
1
5
1
3
5
5
5
5
5
3
5
4
4
13  1
4  2  4
4  2  5
3  7
2  3
1
 
 
 
 
 
 
 
 
1
1
1
3
4  5
6  6
7  6
15
15
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