Average rating of the top 10 chess players per country (OC). : r/MapPorn

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Did Napoleon trust Talleyrand? - Quora

borders Musings on Maps

Maps on the Web: Photo

Country-wise distribution of top 100 FIDE rated Chess Grandmasters of the world (as of list published in March 2023 by FIDE) : r/MapPorn

The rating of the 100th rated chess player for each country [OC] : r/MapPorn

Balkan Histories

Number of World Chess Championships hosted by country : r/chess

datasetsProject/data/StLouis.csv at master · swam92/datasetsProject · GitHub