Julian Rosen's recent post reminded me about something which has been bothering me.

In response to this post, the tag was made a synonym of . I think that this decision should be reversed: hat-problems are their own interesting category of logic puzzles, which should have a tag wiki introducing the common themes. People might want to search for these types of puzzles in particular, and not having an independent tag makes this difficult.

The reasoning for the synonymization was that every hat problem is solved with logical reasoning. There are many categories of tags where a similar argument can be made, like ,,,,, etc, and none of these are synonyms of . Even though every hat-problem is a logic-puzzle, not every logic-puzzle is a hat-problem, so these should not be synonyms.

There are several hat problems on this site (each word is a different link), and there will likely be more in the future, so I think they deserve their own tag. What do you all think?

  • 2
    $\begingroup$ The hat has now been separated from the head! $\endgroup$
    – user20
    Commented Jun 4, 2015 at 1:53
  • $\begingroup$ I take a bit of issue with the name of the tag - it should probably be "coloured hats". $\endgroup$
    – user88
    Commented Jun 4, 2015 at 21:08

2 Answers 2


I agree that this puzzle type warrants it own tag. I could easily imagine wanting to search for this kind of puzzle of particular.

I think that the tag should be limited to puzzle to devise a strategy for the players to guess their hat colors, and not include puzzles like this one or this one, where you are asked to make a logical inference from player's statements. Maybe we need another tag for inductive-knowledge logic puzzles such as blue-eyes variants or sum and product.

  • 1
    $\begingroup$ I fully agree with not including inductive-knowledge type puzzles. Perhaps hat-guessing or hat-game is a better tag name than hat-problems. $\endgroup$ Commented Jun 3, 2015 at 2:53

I would tag it with or rather than or , as the puzzle suffix tags are supposed to be used for very broad categories of puzzles.

But other than that I definitely agree that hat problems skills have their own tag.


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .