In an effort to make the community here a bit more fun, I propose that we use a new tag that would conform to a set of standards (maybe a complete template to start a new post) outlined in the discussion here with you all about it.
These tagged posts will define a problem that has many possible solutions, as a exercise for those looking to skill up in Substrate can take on.
Rules about how to post spoilers in answers should likely be in place so that opening the post doesn't in itself imply any solution thou answers will link to or have collapsible sections that describes their approach & solution.
What should we call this tag? And what should the standards (or full templates) be for asking one of these puzzle/challenge/open-ended-problem questions be?