23x15 puzzle
Time:
4
1
4
1
3
1
2
1
3
1
1
3
1
4 6 1
4
5 6 2
5
1
3
1
7 8 2
4
6 5 1
5
6 1
4
1
3
1
3
 
 
 
 
1  1
5  1
2  1  4  4
2  1  1  6  4
3  15
23
12  10
19
 
 
6
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