15x23 puzzle
Time:
1 5 7 7 7
2
8
5
9
7
9
9
18 10
2
8
1
6
1
2
1
 
 
 
 
2
4
7
9
10
11
11
13
12
2  4
4
3
3
5
5
4
4
5
7
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