If there is a seed player, it is necessary to make specific arrangements. 84 people are exactly 20 to 2 to the sixth power, which means that seven rounds can be arranged. In the first round, 40 people except the seeded players will be selected by lottery, and 20 people will be eliminated in one game, and then they will be arranged in 2, 3, 6, 10, 14, 18, 19, 22, 26, 30, 34, 35, and 35. While the seeded players are at 1, 16, 17, 32, 33, 48, 49, 64 and so on. (It is relatively fair to arrange for the seed players to meet not so soon. If there are many seeds, they may be subdivided. ) just compete with other players. The rest have wins and losses, which is very simple. I wish your game a complete success!