20x15 puzzle
Time:
3
2
1
3
2
3
3
3
5
3
4
3
1
2
3
1
3
3
2
1
3
5
3
1
3
3
1
2
3
2
2
3
2
2
5 2
2
1
2
2 3
2
2
2
2
2
 
 
 
 
 
13  3
13  3
13  1
 
1
16
5  2  4
3  1  2  1
4  12
1  15
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