It struck me as a good idea that the minimum score should float, instead of being a constant 5. I suggest 100/number of participants. The idea is that in a contest where very few accomplish a working solution, being one of those people is worth more than one where everybody can solve it. Yes? No?
...and this has nothing -- nothing, I tell ya! -- to do with the fact that I'm the bottom score on Mastermind ...though I'd sure like to see some people below me, there. Roy