20x15 puzzle
Time:
6 6 2
5
1
5
1
5
1
5
1
5
1
5
1
7
4
2
7 7 8 8 8 2
1
2
2
2
2
2
2
1
2
5
9
 
 
 
 
 
 
4  1
3  8
1  12
2  7  1
15  1  2
20
9  5  3
17  2
20
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