Jeff Sonas

Jeff Sonas is a statistical chess analyst who invented the Chessmetrics system for rating chess players, which is intended as an improvement on the Elo rating system.

[2] He was a participant in the FIDE ratings committee meeting in Athens, Greece in June 2010.

In 2002 he wrote for chessbase.com that a 24 k-factor would be ideal for predicting game results, instead of the standard 10 for high level players.

This means players are consistently losing points for winning, and winning points for losing, since the Elo formula is incorrectly predicting results.

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