Guenther Moehring vs Joaquin Carlos Diaz Diaz
Bucharest Bucharest ROU 1976.??.??
Modern Defense: Averbakh System 1-0

Kenneth S Rogoff vs Joaquin Carlos Diaz Diaz
Biel Interzonal Biel SUI round 7 1976.07.20
English Rat: Pounds Gambit 1/2-1/2

Joaquin Carlos Diaz Diaz vs Milos Pavlovic
Vrnjacka Banja Vrnjacka Banja YUG round 1 1988.04.??
Four Knights Game 1/2-1/2