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Subject: Re: 5 round Swiss system Winboard tournament results (44 programs competed)

Author: Robert Hyatt

Date: 20:24:01 04/17/00

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On April 17, 2000 at 13:56:09, James Swinney wrote:

>Here is the URL to my 5 round Swiss that featured 44 of the latest versions of
>all winboard engines (THAT I HAD ACCESSS TO!!). I know Swiss system pairings are
>pretty lame but in the U.S they rule. All details are on the web page.
>http://members.xoom.com/wfl74/chess_main.htm
>James Swinney


I would suggest that if you play a swiss event like this, that you always
use  R = log2(players)

where R = number of rounds, and players= number of programs in the event.  In
your present event, the two top finishers didn't play.  For > 32 players you
need at _least_ 6 rounds, and 7 would be better to handle excessive draws.

If you want to run only 5 rounds, then use accelerated pairings.  IE seed the
programs from 1-N, then pretend that the top 1/2 have already won one game, so
that you pair the top 1/4 against the second 1/4, and the bottom half the same
way.  This makes sure that the expected top finishers play the best opposition
possible.



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