15x21 puzzle
Time:
12 16 12 2
7
5 2 4
1
7
2
8 10 10 10 5
 
 
3  4
3  4
2  6
3  7
4  7
5  7
5  7
6  5
6  1  3
5  3
4
3  1
2  1
2  1
2
1
 
 
 
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