| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Portisch vs Unzicker |
| 1-0 | 59 |
1964 |
Tel Aviv ol (Men) | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 2. Portisch vs A Matanovic |
| 1-0 | 28 |
1965 |
Zagreb | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 3. Portisch vs Panno |
| 1-0 | 41 |
1968 |
Lugano | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 4. Portisch vs Korchnoi |
 | ½-½ | 31 |
1970 |
USSR vs. Rest of the World | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 5. Portisch vs Kholmov |
| 1-0 | 36 |
1970 |
Budapest | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 6. Portisch vs Karpov |
| 1-0 | 26 |
1972 |
San Antonio | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 7. Portisch vs Parma |
| ½-½ | 34 |
1973 |
Ljubljana/Portoroz (Slovenia) | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 8. Portisch vs Balashov |
| 1-0 | 31 |
1979 |
Rio de Janeiro izt | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 9. Portisch vs Ljubojevic |
| ½-½ | 26 |
1979 |
Montreal | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 10. Portisch vs Beliavsky |
| 0-1 | 38 |
1998 |
Chess Classics Masters | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 11. Portisch vs Beliavsky |
| ½-½ | 45 |
2004 |
Marx Gyoergy Chess Memorial | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
