Swiss-system is a tournament structure in which each round players or teams are paired against other players or teams on similar score to them. Each participant in a Swiss-system tournament is awarded a number of points after each round depending on whether they win, lose or draw. At the beginning of each round, players are paired-up against other players on the same score as them. After a number of rounds, the player with the most points declared the winner. Typically Swiss-system tournaments have enough rounds so that it is only possible for one player to win every game that they take part in.