20x15 puzzle
Time:
12 1
7
1
5
4 4 4 1 1
3
2
3
2
3
5 5 2
2
1
2
5 5 5 1
5
9 9
1
1
3
1  3
1  2
2  2  1  2
2  13
6  2  6
6  5  6
6  13
20
3  2
 
 
 
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