23x15 puzzle
Time:
2
10
1
9
1
9
8 8 8 6
1
7
1
8 8 8 4
3
8 7 9 7
1
9 9 9 9 9 9 10
3
1
 
 
 
1  1
3  1  9
23
23
23
23
11  11
23
6  7  7
13  9
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