I really enjoy this kind of post. It's short, simple and something most people could figure out by looking at the problem. Even then, it's still something that

I really enjoy this kind of post. It's short, simple and something most people could figure out by looking at the problem. Even then, it's still something that makes you go 'huh, how would you do that?'. Until the intuition about toroidal space kicks in, that is.