I was reminded of this puzzle: What is the "linguistically hardest" number less than $10^9$? , that is much more nice in Russian language and started to wonder - why not?
Hereby the question - what should be a policy for this puzzleSE about question, which require knowledge of things, which not everybody knew. Like foreign (but quite popular) languages, history, chemistry, etc.
If chemistry puzzle may be appropriate on chemistrySE, puzzles like What is the "linguistically hardest" number less than $10^9$? would not be appropriate on any languageXSE, since they only use language to build up the puzzle, not ask about it linguistical and usefull properties. So there won't be any other place on SE for such puzzles.