In 1953, he took 18th in Mar del Plata (Svetozar Gligorić won). In 1954, he took 22nd in Mar del Plata/Buenos Aires (zonal; Oscar Panno won). In 1959, he took 8th in Lima (Borislav Ivkov and Ludek Pachman won). In 1959, he tied for 7–8th in Santiago de Chile (Ivkov and Pachman won), and beat Bobby Fischer in their individual game there.
Jauregui played for Chile in two Chess Olympiads at Moscow 1956 and Tel Aviv 1964. He also represented Chile in 1st Panamerican Chess Team Championship at Tucuman 1971, where he had best individual result on reserve board (equal with Samuel Schweber of Argentina and Hernández of Cuba).
Born in Santiago, Chile, in the mid-1970s he moved to the Canadian province of Nova Scotia. In 1977, he was Atlantic Champion. He played in the Canadian Chess Championships in 1978, 1981 and 1987. He died March 8, 2013, in Milan, Italy.
- "Carlos Jauregui (d. 8 March 2013):". Halifax Chronicle-Herald (copied on the website of the Nova Scotia Chess Association. 29 March 2013. Retrieved 16 August 2015.
- Gaige, Jeremy (1987), Chess Personalia, A Biobibliography, McFarland, p. 193, ISBN 0-7864-2353-6
- Carlos Jauregui vs Robert James Fischer, Santiago 1959 game score at chessgames.com
- Chess Olympiad record of Carlos Jauregui Andrade at olimpbase.org
- Wojciech Bartelski. "1st Panamerican Team Chess Championship: Tucuman 1971". olimpbase.org. Retrieved 13 March 2013.
- Carlos Jauregui bio at the Chess Federation of Canada website, retrieved 14 March 2013