20x15 puzzle
Time:
8 7 7 7 7 4
2
4
2
3
2
4
2
4
2
5
2
5
2
4
2
6
2
4
4
6 6 5 6 5
 
 
 
 
 
 
2
1  2  2
15
17  1
14  5
7  12
5  6
20
20
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