Vladislav Nevednichy vs Lajos Portisch
Marx Gyoergy Chess Memorial Paks HUN round 3 2004.06.07
Sicilian Defense: Kan Variation, Knight Variation 1/2-1/2

Lajos Portisch vs Ferenc Koberl
Voros Lobogo Budapest HUN round 6 1955.11.??
Benoni Defense: Old Benoni 1-0

Lajos Portisch vs Jaan Yukhanovich Ehlvest
Reykjavik World Cup Reykjavik ISL round 13 1988.10.18
Queen’s Gambit Accepted: Alekhine Defense 1/2-1/2

Lajos Portisch vs Vasily Smyslov
Amsterdam Interzonal Amsterdam NED round 8 1964.05.29
Queen’s Indian Defense: Buerger Variation 0-1

Mikhail Tal vs Lajos Portisch
Brussels World Cup Brussels BEL round 8 1988.04.10
Ruy Lopez: Berlin Defense, Berlin Wall 1/2-1/2

James Macrae Aitken vs Lajos Portisch
13th olm qual. group 3 Munich FRG round 4 1958.10.04
Sicilian Defense: Taimanov Variation, Bastrikov Variation 0-1

Jan Timman vs Lajos Portisch
Phillips & Drew Kings London ENG round 10 1982.04.26
Queen’s Indian Defense: Anti-Queen’s Indian System 1-0

Mikhail Tal vs Lajos Portisch
Tal - Portisch Candidates Quarterfinal Bled YUG round 2 1965.06.28
Caro-Kann Defense 1-0

Lajos Portisch vs Anatoly S Lutikov
Alekhine Memorial Moscow URS round 2 1959.04.08
Benoni Defense: Taimanov Variation 1-0

Lajos Portisch vs Jan Timman
Reykjavik World Cup Reykjavik ISL round 11 1988.10.16
Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation 1/2-1/2