1. The formula for calculating the number of players in a single loop game is N(N- 1)/2, that is, the number of players (number of players-1)/2= the total number of players.
2. Take the six-person round table as an example: the first round is 1-6 2-5 3-4.
The second round 1-5 6-4 2-3
The third round 1-4 5-3 6-2
The fourth round 1-3 4-2 5-6
The fifth round 1-2 3-6 4-5
Third, after arranging the round table, everyone draws lots, fills in the names in the round table according to the drawn numbers, and then prepares the competition schedule and distributes it to each team. Note: The position of "1" in the upper left corner of the round table remains unchanged, and other numbers are rotated counterclockwise in turn.