15x23 puzzle
Time:
2
6
1
2
4
2
2
5
2
5
3
5
6
5
3
3
4
3
3
4
4
3
4
3
4
5
4
4
3
5
1
3
1
2
1
2
2
 
 
 
 
2
5
5
5
2
2
2  2
1  6
3  6
1  6
1
2
2
2
1  4  6
15
13
12  1
10  4
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