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4/2/13 9x9 https://www.calcudoku.org/forum/viewtopic.php?f=16&t=430 |
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Author: | pnm [ Mon Apr 08, 2013 10:51 am ] |
Post subject: | Re: 4/2/13 9x9 |
picklepep wrote: I just noticed that this puzzle only has a rating of 130. It's a little bit funny as it was the most difficult puzzle I've ever done. Using the "informal" difficulty rating of nr solved / nr 4x4 easy solved: 48 / 495 = 9.7%, which is not the smallest such percentage recorded for a Tuesday 9x9 (there was an 8.3% on 24/7/2012 for example), but it's close (48 / 495, not 59 / 502, I'm only counting puzzles solved on the day itself) (as was done for 12x12 puzzles in this thread: viewtopic.php?f=16&t=419) There are a few other factors that I'm using to assess the difficulty of a puzzle (the rating number on the page is derived from a few of them), I want to try to find the one(s) which correlate best with that percentage. Patrick |
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