Swiss system: rounds, score-based pairing and tie-breaks

How many rounds

By default there are as many rounds as needed for a single leader to emerge: 4 for 12 players, 5 for 32, 6 for 64. For more games you can raise the number of rounds under “More” — up to the number of players minus one, beyond which rematches are unavoidable.

Pairing

Round one follows the order of the participant list — press “Shuffle” for a random draw. From round two, pairs follow the FIDE Dutch system: players on equal points meet each other, and rematches are ruled out as long as any unplayed opponent is available.

The next round is built in full once every match of the current one is played. That way results are never doubled and pairs do not shift because one match was entered before another.

Tie-breaks

Equal points are normal in a Swiss event, so extra criteria split places. In the settings you choose them and set their order:

• Buchholz — the sum of all opponents' points: tougher opposition ranks higher;
• Buchholz cut 1 — the same without the weakest opponent;
• Sonneborn–Berger — counts whom exactly the points were won against;
• progressive score — who scored earlier;
• head-to-head, set and game difference.

How to start

1. Create a tournament and choose “Swiss system”.
2. Add participants and adjust the number of rounds and tie-breaks if needed.
3. Enter round one results — round two is built automatically.
4. Repeat to the last round: standings and places update on their own.