Idea Two: Sabotage Game

You're definitely right, but unfortunately there's a malevolent actor who wants to make you look a fool. And even more unfortunately, he's creative and has a lot of resources. What does he sabotage? What evidence does he counterfeit? (This way you're identifying the examples or the proofs by looking at them as structurally crucial.)

I really like this and wish I'd seen it earlier. Good idea.