jason: No, you could still take back your moves - it just wouldn't show you your pieces would go back to the bar until you submit, kind of like in dark chess...it doesn't show you the new spaces until you submit the move.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)