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I can't believe this old-but-gold piece hasn't been shared here. It's a regex crossword puzzle!

Crossword

Here's a nicely printable PDF.

Kudos for this one goes to a competition held by MIT in 2013. The answer to this particular puzzle is also listed there, so this isn't much of a competition - I'm just sharing something nice to play with that I myself enjoyed immensely. :)

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  • $\begingroup$ Does each regex have to consume the entire row/column? Or does the regex just have to match at least once? $\endgroup$
    – plasticinsect
    Aug 13, 2019 at 19:56
  • $\begingroup$ @plasticinsect - Entire row $\endgroup$
    – Vilx-
    Aug 13, 2019 at 20:01
  • $\begingroup$ For fan of regex crosswords there is a website full of them: regexcrossword.com $\endgroup$
    – Chris
    Mar 16, 2021 at 15:56
  • $\begingroup$ @Chris - Yeah, but that's kinda like easy mode compared to this thing. :) $\endgroup$
    – Vilx-
    Mar 16, 2021 at 20:09
  • $\begingroup$ @Vilx-: Given I've not got through all the ones on that website I feel this might not be a bad thing! ;-) $\endgroup$
    – Chris
    Mar 19, 2021 at 10:51

2 Answers 2

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This beautiful hive took me 2 hours :P
I realllllllllllly like this regex crossword(more like sudoku instead, need to derive one by one)!

enter image description here

My paperwork here :P

enter image description here

Useful for Regex checking:

Regex101

Remark:

I've found this site: Regex Cross­word
For whom loves Regex crosswords :P

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  • $\begingroup$ Aaaand you get the checkmark! Great work! :) $\endgroup$
    – Vilx-
    Aug 13, 2019 at 15:46
  • $\begingroup$ There is twice OM and no MS on the second horizontal row, is this normal? @Vilx- $\endgroup$
    – Arnaud Mortier
    Aug 13, 2019 at 20:11
  • $\begingroup$ @ArnaudMortier - Is that the one that says (DI|NS|TH|OM)*? Then yes, it's correct. It matches the regex. $\endgroup$
    – Vilx-
    Aug 13, 2019 at 21:29
  • $\begingroup$ @ArnaudMortier this is for checking regex pattern: regex101.com :) $\endgroup$
    – Conifers
    Aug 14, 2019 at 0:49
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I loved this puzzle. I'm super impressed with @Conifers who completed it in 2 hours. Took me something closer to 5 hours, though I did it in burst of 30 minutes. Here's mine: enter image description here

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  • $\begingroup$ We are Regex fanatics :P $\endgroup$
    – Conifers
    Aug 21, 2019 at 14:09
  • $\begingroup$ I'm kinda doing it right now at work, 5 minutes at a time. :D $\endgroup$
    – Vilx-
    Aug 21, 2019 at 14:22

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