it is a round based system where everyone plays a set number of games (no knockouts like the current tournaments). The good bit, though, is that each round people are paired against opponants of the same score (if possible) meaning that if you keep winning then you have to play stronger and stronger opposition but, conversely, if you keep losing then you will get paired against other players who have lost their games so you dont get too disheartened as you will be getting a more level match.