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---------------------------- Original Message ----------------------------<br />
Subject: [EM] 2018 Chess Candidates Tournament<br />
From: "Ross Hyman" <rahyman@sbcglobal.net><br />
Date: Tue, March 27, 2018 4:36 pm<br />
To: "election-methods@lists.electorama.com" <election-methods@lists.electorama.com><br />
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> The 2018 double round robin chess candidates tournament just ended. The matrix for the tournament is available here:https://en.wikipedia.org/wiki/Candidates_Tournament_2018<br />
> Each of the 8 players plays every other player twice (once as white, once as black.) A player get one point for a win, 1/2 point for a draw, and 0 points for a loss. The winner, (Fabiano Caruna, who wins the right to play Magnus Carlson for the world championship, the first time a
U.S. player will compete for the championship since Bobby Fischer) is the player with the most points. (This is effectively Borda, I think.)<br />><br />
> The rank ordering using points:(using the name abbreviations from the Wikipedia martrix) :CAR > (MAM = KAR)> DIN > (KRA = GRI) > SO > ARO<br />
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> It is interesting to apply Condorcet to this matrix. I kept only those matrix elements with a decisive victory ( one victory and one draw or two victories), dropping everything else. This produced a very sparse matrix with no cycles and the following Condorcet ranking.<br />
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> DIN>MAM>KAR>CAR>KRA>GRI>SO>ARO.<br />
> which makes Din Laren come in first and Caruna come in fourth.<br />
></p><p> </p><p>so this looks like why condorcet is better than borda.</p><p>DIN lost to no one and beat everyone else at least once, right? and everyone else has lost toe DIN at least once, right?<br />
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DIN looks like the champ to me.</p><p>--<br />
<br />
r b-j rbj@audioimagination.com<br />
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"Imagination is more important than knowledge."<br />
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