Related:

Regex Cross­Word - https://news.ycombinator.com/item?id=27244758 - May 2021 (10 comments)

RegEx Crossword - https://news.ycombinator.com/item?id=26439208 - March 2021 (151 comments)

Regex Crossword - https://news.ycombinator.com/item?id=20874475 - Sept 2019 (59 comments)

A regex crossword from LinkedIn Engineering - https://news.ycombinator.com/item?id=11266774 - March 2016 (40 comments)

Hamlet – A crossword puzzle game using regular expressions - https://news.ycombinator.com/item?id=9288605 - March 2015 (11 comments)

Regex Crossword - https://news.ycombinator.com/item?id=8682792 - Dec 2014 (2 comments)

Regex Crossword - https://news.ycombinator.com/item?id=8674039 - Nov 2014 (108 comments)

RegEx Crossword - Sudoku-like Regular Expression Puzzles - https://news.ycombinator.com/item?id=6056011 - July 2013 (11 comments)

Mystery hunt regex crossword solved in 127 lines of Haskell - https://news.ycombinator.com/item?id=5495646 - April 2013 (1 comment)