Lajos Portisch vs Andrew Jonathan Mestel
GLC Chess Challenge London ENG round 1 1986.03.11
King’s Indian Defense: Steiner Attack 0-1

Lajos Portisch vs Georgi Tringov
Wch U20 prel-B Antwerp BEL round 3 1955.07.23
King’s Indian Defense: Orthodox Variation, Aronin-Taimanov Defense 1/2-1/2

Lajos Portisch vs Yuri Balashov
Rio de Janeiro Interzonal Rio de Janeiro BRA round 11 1979.10.07
Nimzo-Indian Defense: Normal Variation, Gligoric System, Bronstein Variation 1-0

Miklos Bely vs Lajos Portisch
HUN-ch 12th Budapest 1957.03.02
French Defense: Tarrasch Variation, Guimard Defense, Main Line 1-0

Boris Spassky vs Lajos Portisch
Spassky - Portisch Candidates Semifinal Geneva SUI round 13 1977.08.14
Sicilian Defense: Closed 1-0

Julio Kaplan vs Lajos Portisch
San Antonio San Antonio, TX USA round 10 1972.12.01
Sicilian Defense: Najdorf Variation, Scheveningen Variation 0-1

Lajos Portisch vs Alexander Beliavsky
Moscow Moscow URS round 7 1981.04.13
Queen’s Gambit Declined: Barmen Variation 0-1

Lajos Portisch vs Anatoly Karpov
Biel SKA Biel SUI round 8 1996.07.30
Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation 0-1

Lajos Portisch vs Bent Larsen
Larsen - Portisch Candidates Quarterfinal Porec YUG round 9 1968.05.22
Queen’s Gambit Declined: Hastings Variation 1/2-1/2

Lajos Portisch vs Bent Larsen
Petrosian Memorial Moscow RUS round 2 1999.06.19
Queen’s Indian Defense: Averbakh Variation 1-0