Divide into three groups first, and then select the winning team in each group in the knockout round, leaving only three teams. Then draw lots to write A, A and B on three pieces of paper, and the one who draws B will go directly to the next round. Those who draw a continue to play, and the winner plays the final with those who draw B.
Extended data:
Wheel number calculation
Number of rounds: in the round robin competition, each team completes one game, which is one round. (All teams play a game at the same time as a round)
When the number of teams is odd, the number of rounds is equal to the number of teams. If there are five teams participating in the competition, the number of rounds in the competition is five.
When the number of teams is even, the number of rounds is equal to the number of teams minus one. If there are six teams participating in the competition, the number of rounds in the competition is five.
Field number calculation
Number of matches: The number of matches in a single cycle can be calculated by the following formula (simple mathematical combination formula):
Number of matches = number of teams * (number of teams-1)/2
If teams 6 or 7 participate in the competition, the number of competitions is:
6 *(6- 1)/2 = 15 (field) 7*(7- 1)/2 =2 1 (field)
Baidu encyclopedia-single round robin system