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Comments on Puzzle #450: Devil's Numbers - logic version
By Robert Kummerfeldt (rmkummerfeldt)

peek at solution       solve puzzle
  quality:   difficulty:   solvability: moderate lookahead  

Puzzle Description Suppressed:Click below to view spoilers

#1: Jan Wolter (jan) on Jun 14, 2006

This definately has only one solution. However, I've only been able to solve about 3/4 of it by logic. Had to use trial and error methods beyond that. Maybe I missed something though.
#2: Robert Kummerfeldt (rmkummerfeldt) on Jun 14, 2006 [HINT]
Comment Suppressed:Click below to view hints
#3: Jan Wolter (jan) on Jun 15, 2006
I did lots of edge work, but eventually got stuck. By "trial and error," I mean making a guess that I suspect is wrong, filling out it's consquences for twenty or thirty squares until I find a contradiction, then undoing back to my original guess, and filling in the opposite. It's a "logical" procedure, but it's not really the way these things are supposed to be done.

It's entirely possible I got stuck because I missed something. I looked for a long time, but I know other people are better at solving these than I am.
#4: Robert Kummerfeldt (rmkummerfeldt) on Jun 15, 2006 [HINT] [SPOILER]
Comment Suppressed:Click below to view hints and spoilers
#5: Jan Wolter (jan) on Jun 15, 2006
Yup, that hint made perfect sense to me, and got me past the point where I was stuck. Cool.
#6: Mark Conger (aruba) on Jun 16, 2006
Nice puzzle; I was surprised that it had a unique solution, given the amount of white space. I could do it without using the trial and error method (at least, I only used it in my head).

I don't like seeing another puzzle-maker shown up, though; I think original puzzles would be better.
#7: Jan Wolter (jan) on Jun 17, 2006
I've thought of adding a feature that allowed people to post "variants" of previous puzzles. The plus is that pretty good puzzles would get refined into very good puzzles. The minus is that the site would tend to fill up with very similar puzzles.
#8: Bobbie Hall (koalaobo) on Jun 28, 2006
Artistically, I thought the original was kind of sketchy--plus I'm not a big fan of devil symbology. But I was fascinated with how the logic version of such a sparse design played out--especially in the top section. And it was a great exercise in using edge logic.
#9: Rachel R (rachel) on Jul 10, 2007
I loved how this was so minimalist. I wasn't sure how to start, but once I caught a thread it had a nice pace.
#10: Arduinna (arduinna) on Mar 3, 2008 [HINT]
Comment Suppressed:Click below to view hints
#11: Adam Nielson (monkey) on Jul 25, 2008
Wow, that was tough! It was fun to use the techniques that you all talked about, even before I read these comments.
#12: Deana L (ffswife) on Feb 19, 2009
This is proof that I'm getting better at solving these silly puzzles... when I started this one, I filled in all the obvious blanks and then got stuck so I saved it and moved on... Took a few minutes of just looking at the puzzle, but I figured it out! Yea me! ;)
#13: Adam Nielson (monkeyboy) on Jul 15, 2009
The quality is somewhat lacking, but the "funness" factor was a "5!" I used more edge logic than ever, and I used it in places I never would have thought to use it. I loved solving this.
#14: Gator (Gator) on Dec 14, 2010
I really enjoyed this puzzle.
#15: BlackCat (BlackCat) on Apr 6, 2018
Had to guess several times.
#16: John Reid (femvoxfan) on Jun 7, 2020
Bottom left corner was TOUGH! I finally saw the way to finish the bottom off and that let me finish off the last part of the left side and middle. Great challenge! Thanks.

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