Unanswered Questions

For background, see: Should mathematics questions really be on-topic here? (about "routine" mathematics questions) What tricky mathematical questions are on topic here? (about "heavy" mathematics ...

Are open-ended contest type questions off-topic? What I am talking about is questions such as: Who can create the most [adjective] [type-of-puzzle]? For example, I recently tried to create a ...

Everyone, we really need to hunker down and come up with consistent guidelines for the content of this site. This post will be a container question for the substantial, site defining questions, and ...