Fencer: We can do that, yes, but what about those outside that range? That would be a lot of extra tournaments, and the more there are, the less chance enough people will join, and a lot of extra db space if a tournament were started for ever 200 BKR range. What I meant, was a tournament where anyone could join, but when the sections were set up (with this option checked) each section would include players within a set range of each other.

I've no doubt it would be tons of new code, because I haven't seen anything here like it (afaik).