I don't think Harry's mudblood can come in your common room, he wouldn't know the password. If you don't want to meet him I could just give it to you tomorrow at breakfast, too. I haven't read Draco's book, the book I have came from the library but it does explain how to do the different sorts of tournaments.

I like your idea of spacing out the matches. That's a good idea. Do you think there's any chance Professor Vector would be willing to do scorekeeping? I've never kept score in a chess game before.