Lajos Portisch vs Jaan Yukhanovich Ehlvest
Biel SKA Biel SUI round 6 1996.07.28
Modern Defense: Averbakh System 0-1

Rafael Vaganian vs Lajos Portisch
Portisch - Vaganian Candidates Eighthfinal Saint John CAN round 6 1988.02.01
Catalan Opening: Open Defense 1/2-1/2

Svetozar Gligoric vs Lajos Portisch
Olympiad Final-A Nice FRA round 5 1974.06.19
Grünfeld Defense: Exchange Variation, Classical Variation 0-1

Lajos Portisch vs Daniel Stellwagen
Sigeman & Co Malmo SWE round 4 2008.04.25
King’s Indian Defense: Orthodox Variation, Aronin-Taimanov Defense 0-1

Lajos Portisch vs Tigran Vartanovich Petrosian
Petrosian - Portisch Candidates Quarterfinal Palma ESP round 12 1974.02.15
Slav Defense 1-0

Jan Hein Donner vs Lajos Portisch
Maroczy Memorial Budapest HUN round 4 1961.10.18
Benoni Defense: Classical Variation, Argentine Counterattack 0-1

Lajos Portisch vs Jan Timman
Hastings 1969/70 Hastings ENG round 3 1969.12.31
Benoni Defense: Classical Variation, Argentine Counterattack 1/2-1/2

John Nunn vs Lajos Portisch
Reykjavik World Cup Reykjavik ISL round 8 1988.10.12
Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1-0

Viktor Korchnoi vs Lajos Portisch
Candidates Match Bad Kissingen FRG round 3 1983.03.30
English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation 1-0

Lajos Portisch vs Anatoly Karpov
San Antonio San Antonio, TX USA round 9 1972.11.30
Nimzo-Indian Defense: Normal Variation, Gligoric System, Bronstein Variation 1-0