I noticed that the CI check for links is consistently failing on the problem-specification repo and it seems to be because of the POV exercise, it contains a link to a site that is now apparently dead. (Specifically, https://www.4clojure.com/)
There’s some discussion about it here and there seem to be a few mirrors online hosted by different people.
So, should we (I can probably file a PR reasonably quickly) update the exercise metadata to point to one of those mirror or if anyone remembers the specific exercise that was the inspiration for POV, we can link to that specifically?