Héctor Decio Rossetto (September 8, 1922, Bahía Blanca, Argentina – 23 January, 2009, Buenos Aires) was one of the best chess players in Argentine history.
He earned the title of International Master in 1950 and the Grandmaster title in 1960.
He was a five-time Argentine Champion (1942, 1944, 1947, 1962, and 1972). [1] Rossetto won the Mar del Plata chess tournament in 1949 and again in 1952 (shared with Julio Bolbochán). He also won in Mar del Plata (KIM) in 1962.[2]
He was the director of the 1978 Chess Olympiad in Buenos Aires.
After Miguel Najdorf he was the most important Argentine chess player of his time.