I listened to the "Famine Game Reaping" snoutcast and then posted a question in the form of a personal failure of imagination: What if you were a GC running an application process and you wanted some puzzle-y activity that you could use to rank teams? It's easy to make a puzzle that everybody* can solve. It's easy to make a puzzle that nobody can solve. But coming up with something in-between is hard, especially since teams can collude.
Anyhow, it's not a practical question. Pitting teams against each other just to apply… not a great way to instill an event with a feeling of fun. Still, the game-and-puzzle-design part of my brain won't let it go.
*Well, more teams than you could accept to a live event, anyhow.