There are several relativity old open problems that have been resolved by our community members. One such case is this answer which resolved an open problem that was originally posed in 1998.

Should we have a tag for old open problems that have been resolved on this site?

For example, I suggest resolved-open-problem Tag.

  • $\begingroup$ By old open problems I mean problems known to be open for at lest five years. $\endgroup$ Dec 22, 2013 at 19:15
  • $\begingroup$ like the idea of bringing attn to these problems but it might make more sense as a web page or blog entry that is updated over time. or maybe just a meta question with new answers? another notable case is the "unshuffling a string" question (which has been blogged about also). alas, these cases seem to be relatively rare on the site. $\endgroup$
    – vzn
    Dec 26, 2013 at 21:29
  • $\begingroup$ see also original proofs generated on the site and highlights of cstheory $\endgroup$
    – vzn
    Dec 27, 2013 at 16:04

1 Answer 1


I think it is unnecessary (search with open-problem tag with accepted answer) and not a very useful tag (unlikely to be used for searching).


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