1. elimination system: after the start of the competition, each pair of players will play against each other, and the winner will be promoted and the loser will be eliminated. Until the end, only two players are left, and the referee will make the final decision.
2. Round robin system: After the start of the competition, the players will be divided into two groups, each group will play a single round robin competition, and each player will play a game, and then the total scores of each group will be calculated to judge the final outcome.
The above two competition systems are common 5-in-2 competition systems, and the specific competition system can be determined according to the nature of the competition and the arrangement of the organizers.