| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Portisch vs P Dely |
| ½-½ | 48 |
1963 |
Ungarn | D78 Neo-Grunfeld, 6.O-O c6 |
| 2. Portisch vs Gligoric |
| ½-½ | 18 |
1968 |
Skopje-Ohrid | D78 Neo-Grunfeld, 6.O-O c6 |
| 3. Portisch vs D Ilievski |
| 1-0 | 31 |
1968 |
Skopje-Ohrid | D78 Neo-Grunfeld, 6.O-O c6 |
| 4. Portisch vs Smejkal |
| ½-½ | 12 |
1970 |
Prag | D78 Neo-Grunfeld, 6.O-O c6 |
| 5. Portisch vs Ivkov |
 | 1-0 | 37 |
1973 |
Petropolis | D78 Neo-Grunfeld, 6.O-O c6 |
| 6. Portisch vs W Schmidt |
| 1-0 | 48 |
1973 |
Bath | D78 Neo-Grunfeld, 6.O-O c6 |
| 7. Portisch vs Hort |
| ½-½ | 58 |
1979 |
Tilburg | D78 Neo-Grunfeld, 6.O-O c6 |
| 8. Portisch vs Chiburdanidze |
| 0-1 | 55 |
1988 |
Linares | D78 Neo-Grunfeld, 6.O-O c6 |
| 9. Portisch vs Xie Jun |
| ½-½ | 41 |
1994 |
Monaco, Wom-Vet | D78 Neo-Grunfeld, 6.O-O c6 |
| 10. Portisch vs Xie Jun |
| ½-½ | 13 |
1996 |
Foxtrot, London ENG | D78 Neo-Grunfeld, 6.O-O c6 |