Ruy López Opening: Berlin, Rio Gambit Accepted, 0-1

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Why are a number of openings named after countries in chess (board games, naming, and culture)? - Quora

Ruy López Opening: Berlin, Rio Gambit Accepted, 5.Re1 Nd6 6.Nxe5, Event WCh 2013

Ruy López Opening: Berlin, Rio Gambit Accepted, 0-1

Chess Opening Basics: Berlin, Rio de Janeiro Variation - Chessable

What are this sub's thoughts on the Ruy Lopez: Rio de Janeiro Variation? : r/chess

What are some chess openings or variations that are named for cities? - Quora