Chessmetrics Ratings: 20th Birthday
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Chess Daily News by Susan Polgar Live Ratings Archives - Chess Daily News by Susan Polgar
Paul Keres VIII: Gulliver among the Lilliputians
Boylston Chess Club Weblog: October 2014
What does it take to become one of the top 20 chess players in the world? - Quora
George Henry Mackenzie: The Forgotten American Chess Ace (March 24, 1837-April 14, 1891)
What is K factor in FIDE Ratings?
Z - Sonas - The Greatest Chess Player of All Time PDF, PDF, World Chess Championships
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Chessmetrics Ratings: Naumkin, Igor
Ratings analytics: Top 10 in the retrospect 2001-2020
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Chess Board Options by Larry Kaufman - Ebook
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por adulto (o preço varia de acordo com o tamanho do grupo)