20x15 puzzle
Time:
1
2
2
3
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
3
1
3
1
3
3 1
3
8 2
4
8 8 9 9 9 10
 
 
 
 
 
1
1  4
10  9
8
1  6
1  6
8
19
2  14
20
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