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