| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Portisch vs R T Cardoso |
| ½-½ | 74 |
1956 |
Moscow | E30 Nimzo-Indian, Leningrad |
| 2. Portisch vs A Lotfee |
| 1-0 | 49 |
1956 |
Moscow | E30 Nimzo-Indian, Leningrad |
| 3. Portisch vs G Barcza |
| ½-½ | 55 |
1957 |
HUN-ch 12th | E30 Nimzo-Indian, Leningrad |
| 4. Portisch vs S Munhu |
| 1-0 | 31 |
1957 |
WchT U26 04th | E30 Nimzo-Indian, Leningrad |
| 5. Portisch vs Eliskases |
| ½-½ | 42 |
1958 |
GER | E30 Nimzo-Indian, Leningrad |
| 6. Portisch vs Berthold |
 | ½-½ | 56 |
1958 |
Munchen | E30 Nimzo-Indian, Leningrad |
| 7. Portisch vs Bobotsov |
| ½-½ | 21 |
1958 |
WchT U26 fin-A 05th | E30 Nimzo-Indian, Leningrad |
| 8. Portisch vs D Bertholdt |
| ½-½ | 56 |
1958 |
13th olm qual. group 3 | E30 Nimzo-Indian, Leningrad |
| 9. Portisch vs O'Kelly |
| ½-½ | 24 |
1960 |
Madrid | E30 Nimzo-Indian, Leningrad |
| 10. Portisch vs K Darga |
| ½-½ | 25 |
1961 |
Bled | E30 Nimzo-Indian, Leningrad |
| 11. Portisch vs O Ulvestad |
| 0-1 | 42 |
1964 |
Malaga | E30 Nimzo-Indian, Leningrad |
