Águas de São Pedro–São Paulo 1941 chess tournament
The Águas de São Pedro International Tournament () was a chess tournament held from 2 to 26 July 1941 in Águas de São Pedro and São Paulo. The event, the first international chess tournament of Brazil, was organized by the São Paulo Chess Club and sponsored by Antonio and Octavio Moura Andrade, being the latter founder of Águas de São Pedro and owner of the "Grande Hotel".
Rio Grande, Rio Grande do Sul
The history of Rio Grande is as old as the history of the whole region. It was explored by Portuguese sailors led by Martim Afonso de Sousa who sought fortified places along the southern Brazilian coast for a defense against the French corsairs. He discovered the tributary which indirectly connects the Lagoa dos Patos and Lagoa Mirim to the Atlantic Ocean and called the place Rio Grande de São Pedro (lit. "Large River of St. Peter").