20x15 puzzle
Time:
6 6 6 5 6 6 4 4 3 3 2
8
1
3
4
2
8
1
4
1
5
1
5
1
5
3 2
1
2
1
 
 
 
1
3
2
2
3
3  1
3  2  3
6  1  1  4
8  10
20
17
17  2
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