The remaining 10 people are divided into 5 groups, each group plays a game, and the winner is promoted.
Five games were played in the first round, and there were six people left.
In the second round, six people were divided into three groups, each group played a game, and the winner advanced.
There were three fights in the second round, leaving three people.
In the third round, the three-person round robin, every two people play a game, and the champion is decided by ***3 games.
*** 1 1 game