15x23 puzzle
Time:
23 23 23 23 23 23 23 3
18
19 18 2
13
1
7
1
1
2
1
7
8
8
9
7  1
10
12
11
10
11
11
12
13
12
13
13
12  1
12
11
11
12
11
8  1
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