20 rounds swiss-system, the best 12 players play in 3 groups of 4 selected players each play a game on 4 pinball machines based on points (4,2,1,0). the top two players advance to the next round. in this round play 2 groups of 3 selected players each play a game on 3 pinball machines based on points (3,1,0). the top two players advance to the final round. the last 4 players each play a game on 4 pinball machines for points (4,2,1,0).