20x15 puzzle
Time:
6 6 6 6 5 5 5 2
2
5 3
2
7 8 8 6 1
3
1
4
4
1
1
3
2
1
2
1
 
 
 
 
 
 
 
2
3
4  11
14  1  2
14  2
7  1  8
16  1
20
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