Tamaz Gelashvili vs Gustavo Mahia
Dos Hermanas Dos Hermanas round 5 2004.03.11
French Defense 1-0

Jose Gonzalez Garcia vs Gustavo Mahia
Torneo Continental Americano Buenos Aires ARG round 7 2003.08.25
Sicilian Defense: Kan Variation, Knight Variation 1-0

Jorge Sanchez Almeyra vs Gustavo Mahia
Najdorf mem Great fin Buenos Aires round 1 2000.09.09
Ruy Lopez: Berlin Defense 0-1