Author: Robert Hyatt
Date: 08:50:43 11/12/97
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On November 12, 1997 at 10:14:04, Sylvain Renard wrote: > >On November 10, 1997 at 08:42:12, Robert Hyatt wrote: > >>without wantint to sound too harsh, this seems like Jaap must have >>discovered accelerated pairings the week before, and just *had* to >>try 'em, without knowing when to use them and why they should/could be >>used. Hopefully he'll figure this out, it isn't difficult... > > Unfortunately it is not true. Mr Van den Herik told me that >accelerated pairings were used in Jakarta and after having >thought a long time, he was convinced it was the best formula... He might have been convinced. Those of us familiar with pairing rules know better, however. There are a couple of documents that describe various pairing options, and there are many when you have an odd number of players in one point group, and there are more for handling color issues. But accelerated pairings were wrong, plain and simple, and if you look at the latter-round pairings, you pick up on why very quickly. The last round is almost guaranteed to *not* be the championship round in a Swiss with this many rounds and this few players. Accelerating the pairings only made this worse. And then the faux pas of using "cumulative round-by-round" scores as the secondary tie-break was the icing on the cake. :) This actually serves as a severe penalty to someone seeded in the top half (the accelerated group) as half of those will likely lose round 1, and half of those that win will lose round 2, giving them a poor early result, and killing them on the secondary tie-break. A little thought, and it was obvious it was a mistake...
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