In the end of 1930s Ernesto Rotunno was one of Uruguayan leading chess players. He twice in row won Uruguayan Chess Championships in 1938 and 1939, and participated in Montevideo 1938 chess tournament which happened as South American Chess Championship (tournament won World Chess Champion Alexander Alekhine).
In 1954, Ernesto Rotunno participated in the match against the Soviet Union as a member of the Uruguayan national team.
- "OlimpBase :: Men's Chess Olympiads :: Ernesto Rotunno". www.olimpbase.org.