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BGonline.org Forums
The good and the bad and the only fix needed
Posted By: Henrik Bukkjaer In Response To: The good and the bad and the only fix needed (TarHeelFan)
Date: Friday, 17 May 2013, at 9:35 p.m.
There are more than one program which does this.
Even pairing like records with adjustments taken into consideration. Adjustments are typically used as tiebreakers in fixed round Swiss variations.
Adjustments are done where you take into consideration the strength of the players that you have met so far in the tournament. How do you measure that strength? Either by looking at their w/l stat in the tournament, or by looking at their rating if you have a trustworthy rating system.
Some adjustments are sensitive to players leaving the tournament early, some are not.
As for pairings, rating can be used here as well. Either for first round pairings, and/or later rounds. Eg. you can try to "even out" the sum of opponent ratings for all players in a tournament (both in Swiss, 1,2,3 K.O. or divisions/round robin tournaments).
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Pairings and distribution of byes have to be looked upon as a whole. They depend on each other.
I find it a bit difficult to say that method X is always better than method Y, because I think it depends on the objective of the tournament (or "round") - as I wrote in my initial post that started this thread.
In some scenarios the focus (meant as where you want to put your fairness emphasis) is on the players at the button (when swiss or multiple knockout is used to thin a field, as a qualifier), whereas in other scenarios your focus is on the very top players (if used in the final stage of a tournament, to find the winner).
Yet again, you sometimes want to "award" certain players any advantage that can be given, due to their rating or qualification performance.
Say for instance, that the players of a swiss of FT tournament have all qualified for it - then why not give byes primarily to the players that had the best qualification record?
This was done at the Danish championships at one point (in the first qualification stage based on ratings, in the second qualification stage based on performance in the first). Like the FT system, it was a swiss modified to exclude players after 3 losses, or pass them on in the tournament after 4 wins. Here's the interesting part, the "best" player (the one that had earned the bye) with the most losses, would be the first player to be asked when a bye was available: Would you like a bye? The caveat was that only one bye could be accepted throughout the tournament (unless at some point, all players in the tournament had accepted byes, very unlikely). If you said no thanks, the offer were passed down and so on. The result was that as a player, you had to think about accepting a bye or not. It could be more worth later on, but you were not sure that you would be asked again...
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