The round-robin system
- Each player is paired with all other players.
- Before the tournament, there is a draw in which each player is given a draw number.
- The course of the tournament is regulated by pairing lists in such a way that if there is an even number of participants, no participant needs to be free from the game; if there is an uneven number of participants, one player is free from the game. If there is an uneven number of players, the player paired against the draw number in brackets in the pairing list is free from the game.
- The player mentioned first in the pairing list plays the white pieces in the first lap; if two laps are played, he plays the black pieces in the second lap.
- The number of points achieved (won: 1, lost: 0, drawn: 0,5) produces the order of positions.
- If two or more participants have achieved the same amount of points at the end of the tournament, their final position is calculated according to the Sonneborn-Berger system (short: SB), i.e. each player is given the full number of points for each game won and is given half the number of points of his opponent in each drawn game. The player who has the higher number of SB-points takes a higher position than the player with a lower number of SB-points.
- If there still is a tie, there is a double position.
- For example: a pairing list with 7 and 8 participants:
| 7
and 8 participants |
| round 1 |
1 (8) |
2,7 |
3,6 |
4,5 |
| round 1 |
(8) 5 |
6,4 |
7,3 |
1,2 |
| round 3 |
2 (8) |
3,1 |
4,7 |
5,6 |
| round 4 |
(8)
6 |
7,5 |
1,4 |
2,3 |
| round 5 |
3 (8) |
4,2 |
5,1 |
6,7 |
| round 6 |
(8)
7 |
1,6 |
2,5 |
3,4 |
| round 7 |
4 (8) |
3,5 |
6,2 |
7,1 |
|
