It can also be divided into four groups, with three people in one or four groups and four people in two or three groups. The first place in each group will qualify, and then draw lots to decide the cross-knockout opponents. The winner will enter the final, and the loser will tie or compete for the third place.
If time and venue conditions do not allow, you can also directly conduct a single knockout, as shown in the competition diagram:
There are 7 people in the upper and lower half of the picture, and 1 and 14 (should be 1 and No.2 seed players) have a bye in the first round (automatically entering the quarter-finals); Others 12 played 6 games in the first round, and 6 winners (losers eliminated) entered the next round (quarter-finals), then played 8 games in the second round (1/4), and the third round (semi-final) was the final of the fourth round.