I was hoping no one would notice that. I got logged out of my computer, and all of my accounts, but it let me do the Mini anyway. I did it without realizing I wasn't logged in (0:38 ). Then it asked me to log in and once I did, it presented me with the puzzle again. I filled it out just to get through it, not really hurrying, just wanting to get through to view the leaderboard. I was very surprised that it gave me credit for that time. I didn't think you could do the Mini if you weren't logged in. That would be one way to cheat (solve, then login and solve again), but I guess that's why there's no prizes.
Anyway, I do think I got a 9 once, but never 8.