Neat idea! Two questions: - Do you verify inputs to ensure they are at least reasonably valid and not trolling? - I'm getting a lot of numbers and certain let

Neat idea! Two questions: - Do you verify inputs to ensure they are at least reasonably valid and not trolling? - I'm getting a lot of numbers and certain letters, are you specifically trying to get the problem cases solved? If so, good idea - but how does it do right now?