20x15 puzzle
Time:
6 7 1
3
1
1
3
1
5
1
5
1
5
1
5
1
5
1
6
1
1
4
1
6
1
8
11
1
13 12 14 14 14 14
4
7
13
5  7
7
1  7
1  8
2  8
2  17
2  6  9
20
20
1  11  6
6  4
 
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