World map of countries that have chess openings named after them (more info in comments) : r/chess
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FIDE - International Chess Federation - The world map of Grandmasters per capita, based on the stats from the FIDE database. 🌐♟️ You can see that European countries have the highest concentration
Why are a number of openings named after countries in chess (board games, naming, and culture)? - Quora

Countries with a chess opening named after them or after a city in that country : r/chess
World Chess on Instagram: World Chess unveils a unique chess map, blending over 150 chess openings with global geography. From Sicilian Defense to Scandinavian Opening, it's a collector's gem. This limited edition

One Giant Step for a Chess-Playing Machine - The New York Times
Why are a number of openings named after countries in chess (board games, naming, and culture)? - Quora

My month-long quest to become a chess master from scratch, by Max Deutsch

Chess openings named after European countries : r/armenia
Why are a number of openings named after countries in chess (board games, naming, and culture)? - Quora

A look back. in 2010 - Chess Forums
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