it's actually not too bad, i played a 300 mover with qusar but it can get nuts. I heard there's one over on IYT that started in 2003 and is over 1000 moves, ongoing.
(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)