@teapoweredrobot suggested elsewhere that Swiss tournaments on OGS might simply end as soon as a winner had been determined.
However, I’ve found an example of a Swiss tournament where that did not happen:
- There were 6 players in this tournament.
- After the first round, 3 had won their games, and the other 3 lost their games.
- After the second round, only one player (who would go on to eventually become the champion) still had a perfect record, since the other two players that won in the first round lost their second round games.
- However, the tournament continued for two more rounds, ending after four rounds.
- The champion won all four of their games, while no one else won more than two.
@flovo, note that this tournament also contradicts the (P + 7) / 5 formula (assuming Q = 1). The tournament lasted 4 rounds, while the formula specifies only 2.6.