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