Lajos Portisch vs John Nunn
Budapest Interzonal Playoff Budapest HUN round 3 1987.09.28
Grünfeld Defense: Counterthrust Variation 1/2-1/2

Lajos Portisch vs Olaf Ulvestad
4th Costa del Sol Malaga ESP round 1 1964.02.01
Nimzo-Indian Defense: Leningrad Variation 0-1

Richard Rapport vs Lajos Portisch
Gotth’ Art Cup GM Szentgotthard HUN round 9 2010.03.03
Queen’s Gambit Declined: Exchange Variation, Reshevsky Variation 0-1

Xie Jun vs Lajos Portisch
Women-Veterans Prague CZE round 8 1995.07.??
Sicilian Defense: Taimanov Variation 0-1

Bent Larsen vs Lajos Portisch
Manila Manila PHI round 12 1974.10.??
Sicilian Defense: Najdorf Variation, Main Line 1-0

Lajos Portisch vs Alexander Beliavsky
Marx Gyoergy Chess Memorial Paks HUN round 4 2004.06.08
Nimzo-Indian Defense: Normal Variation, Gligoric System, Bronstein Variation 1/2-1/2

Lajos Portisch vs Bent Larsen
Montreal Montreal CAN round 13 1979.04.28
London System: Poisoned Pawn Variation 1-0

Lajos Portisch vs Boris Spassky
Spassky - Portisch Candidates Semifinal Geneva SUI round 14 1977.08.16
Nimzo-Indian Defense: Normal Variation, Gligoric System 0-1

Lajos Portisch vs Mark Orr
Chess Olympiad Thessaloniki GRE round 1 1988.11.13
Queen’s Gambit Declined: Exchange Variation 1-0

Ulf Andersson vs Lajos Portisch
Niksic Niksic YUG round 2 1983.08.25
Colle System: Rhamphorhynchus Variation 1/2-1/2