Specific methods: The first game is based on the player's grade (old score): the player with the highest grade is paired with the player with the middle grade, and the player with the second highest grade plays against the player below the middle grade. In the future, each round will be re-matched according to the decided score. The matching in the second round and beyond shall be based on the cumulative results of this competition, and try to match players with the same level. The whole "Swiss system" competition will not let the same pair of players meet twice in the same competition.

It can be seen that "Swiss system" is a competition system that has the main advantages of round robin and elimination, but also avoids the main disadvantages of these two competitions. It's really unique.