20x15 puzzle
Time:
1
8
1
8
1
8
7 2
4
4 4 3 3 3 1
3
1
3
1
3
1
2
1
2
1
1
3
1
1
2
1
2
3
1
2
4
2
7
 
 
 
3  10
1
 
 
3  1
5  5
5  2
4  1
7  2
13  1  3
20
20
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