Puzzles: Choose a Curtain, Duel-ity, Two Point Conversions, and More

This is the authors' abstract. We don't add key points for this paper.

In presenting economic puzzles, I have three goals in mind: some puzzles are chosen to stimulate research; others offer examples that will help undergraduate and graduate teaching; all should provide quality distractions during seminars. As usual, this feature begins with several speed puzzles, with answers provided at the end of the problems. Following are several longer puzzles, for which readers are challenged to submit their own answers. The responses will be discussed in a future issue.