Fun little problem. I think I'm on the right track towards the solution, though I'm not positive. So as not to spoil it for others wanting to work on it, I've p

Fun little problem. I think I'm on the right track towards the solution, though I'm not positive. So as not to spoil it for others wanting to work on it, I've put my thoughts and progress here: https://gist.github.com/828496 https://gist.github.com/828496