Here’s a regex crossword:
https://jimbly.github.io/regex-crossword/
See also: Are Regex Crosswords NP-hard?
https://cs.stackexchange.com/questions/30143/are-regex-cross...
https://jimbly.github.io/regex-crossword/
See also: Are Regex Crosswords NP-hard?
https://cs.stackexchange.com/questions/30143/are-regex-cross...