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Meanings of puzzle ratings
http://www.calcudoku.org/forum/viewtopic.php?f=2&t=854
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Author:  paulv66  [ Wed Jan 04, 2017 5:36 pm ]
Post subject:  Re: Meanings of puzzle ratings

jpoos wrote:
paulv66 wrote:
Size n! n!^n Rating
...
7 5040 8.26064E+25 59.68
...

There must be something wrong with the above logic, as I know I've seen at least one 9x9 with a rating of 130+.


If you want to be sure, todays 7x7 difficult also has a rating of 64.7.


I'm sure Patrick will explain. I've just re-read his post and he talks about averaging the number of possible combinations in each row and column, which would bring us back to n! instead of n!^n, so my logic is definitely flawed.

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