23x15 puzzle
Time:
1
1
1
1
1
1
2
2
2
2
2
2
3
3
3
3
3
3
4
4
4
4
4
4
5
5
5
5
5
5
6
6
6
6
6
6
7
7
7
7
15
21
18
15
12
9
6
3
1
3
6
9
12
15
18
21
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