7. Handling of unplayed games in Swiss tournaments
The committee agreed unanimously to handle unplayed games in Swiss tournaments as follow:
There are two points of view:
a. For the player himself who gets a result by default or is absent
b. For the opponents in other rounds of the player who gets a reult by default
a. The new style Buchhloz uses a virtual opponent to calculate the Buchholz score for a result by default. A virtual opponent has the same points at the beginning of the round and the result by default of a player is treated as a normal result, so a loss by default (by absence) is a win for the virtual opponent and vice versa. For each next round the virtual opponent gains half a point.
b. For reducing the consequence for the opponents when calculating Buchholz, each result by default of a player is counted as a half point (draw) for the buchholz of the player’s opponents
1 In a 9 round swiss the player A achieves 6 points including a default win in round 3.
After round 2 A had 2 points score.
The contribution of round 3 for A is 2 + 0 + 6 x 0.5 = 5 points Buchholz
The contribution of A for his opponents’ Buchholz is 5.5
2 In a 9 round swiss the player B was absent in round 7 and scored 6 points after round
9. After round 6 B had 4 points.
The contribution of round 7 for B is 4 + 1 + 2 x 0.5 = 6 points Buchholz
The contribution of B for his opponents’ Buchholz is 6.5