20x15 puzzle
Time:
3
2
1
1
3
3
3
1
3
1
3
2
3
1
3
1
3
1
3
1
1
3
4 5 4 4 3
1
4
3
2
3
4
2
3
7
2
1
1
4
2
2
1
4
2
2
1
 
3
4
6
1  2
3
3  1  2  5
1  5  6
3  1  1  1  2
5
16
20
20
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