Recently I've noticed a lot of answers which are correct - in some cases, I believe, even accepted - being deleted by the moderators (which means normal users can't vote to undelete them), simply because they're insufficiently explained.
https://puzzling.stackexchange.com/a/4483/5373 (9 upvotes, 0 downvotes). This was the first correct answer, as stated by the OP pre-deletion. Presumably its deletion is the reason the OP hasn't accepted Bert-jan's answer, currently the only non-deleted correct one.
https://puzzling.stackexchange.com/a/3775/5373 (5 upvotes, 0 downvotes). This is still the only correct answer, again as stated by the OP pre-deletion.
In both these cases, a moderator posted a comment asking for an explanation of the answer, and deleted the answer less than 26 hours later.
Does the community agree with deleting correct answers simply because they lack explanation?
Obviously allowing unexplained answers could lead to all sorts of spam (e.g. look at all these, and even this!). I'm sure Puzzling has a higher quantity of such spam answers than many other SEs, and the mods have a big job on their hands to clear them all up. But should we make exceptions for answers known to be correct - or at least allow the answerers more than one day to explain their answers?
According to the official help centre guidelines:
Any answer that gets the asker going in the right direction is helpful, but do try to mention any limitations, assumptions or simplifications in your answer. Brevity is acceptable, but fuller explanations are better.
(And yes, I've seen this previous meta post on the deletion of unexplained answers, but my question is more specific.)