| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Korchnoi vs Ulf Andersson |
 | 0-1 | 73 |
1971 |
Wijk aan Zee (Netherlands) | E00 Queen's Pawn Game |
| 2. Korchnoi vs Ulf Andersson |
 | 0-1 | 50 |
1971 |
Hastings 1971/72 | E11 Bogo-Indian Defense |
| 3. Korchnoi vs Ulf Andersson |
| 1-0 | 40 |
1972 |
Palma de Mallorca | A17 English |
| 4. Korchnoi vs Ulf Andersson |
| ½-½ | 44 |
1978 |
Wijk aan Zee | A30 English, Symmetrical |
| 5. Korchnoi vs Ulf Andersson |
| ½-½ | 59 |
1978 |
Buenos Aires | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 6. Ulf Andersson vs Korchnoi |
 | 0-1 | 38 |
1979 |
Sao Paulo | A15 English |
| 7. Ulf Andersson vs Korchnoi |
 | ½-½ | 18 |
1980 |
London P&D | E17 Queen's Indian |
| 8. Korchnoi vs Ulf Andersson |
| 1-0 | 36 |
1981 |
Johannesburg | A33 English, Symmetrical |
| 9. Ulf Andersson vs Korchnoi |
 | ½-½ | 12 |
1981 |
Johannesburg (South Africa) | D23 Queen's Gambit Accepted |
| 10. Korchnoi vs Ulf Andersson |
| 1-0 | 36 |
1981 |
Sydafrika | A33 English, Symmetrical |
| 11. Ulf Andersson vs Korchnoi |
| ½-½ | 31 |
1981 |
Johannesburg | A13 English |
| 12. Korchnoi vs Ulf Andersson |
| ½-½ | 58 |
1981 |
Johannesburg (South Africa) | A19 English, Mikenas-Carls, Sicilian Variation |
| 13. Korchnoi vs Ulf Andersson |
| ½-½ | 49 |
1982 |
Lucerne (Switzerland) | A04 Reti Opening |
| 14. Korchnoi vs Ulf Andersson |
 | 0-1 | 59 |
1983 |
Wijk aan Zee | E11 Bogo-Indian Defense |
| 15. Ulf Andersson vs Korchnoi |
| ½-½ | 50 |
1984 |
1984 Phillips & Drew GLC Kings | D23 Queen's Gambit Accepted |
| 16. Korchnoi vs Ulf Andersson |
 | ½-½ | 59 |
1984 |
It (cat.13), Wijk aan Zee (Netherlands) | D63 Queen's Gambit Declined, Orthodox Defense |
| 17. Ulf Andersson vs Korchnoi |
| ½-½ | 26 |
1987 |
It, Wijk aan Zee (Netherlands) | A41 Queen's Pawn Game (with ...d6) |
| 18. Ulf Andersson vs Korchnoi |
| 0-1 | 42 |
1987 |
Tilburg | A13 English |
| 19. Korchnoi vs Ulf Andersson |
| ½-½ | 51 |
1987 |
It, Tilburg (Netherlands) | E06 Catalan, Closed, 5.Nf3 |
| 20. Korchnoi vs Ulf Andersson |
| 1-0 | 60 |
1987 |
Reggio Emilia | B80 Sicilian, Scheveningen |
| 21. Ulf Andersson vs Korchnoi |
| ½-½ | 23 |
1988 |
It (cat.13), Haninge (Sweden) | D37 Queen's Gambit Declined |
| 22. Korchnoi vs Ulf Andersson |
| ½-½ | 25 |
1988 |
Reykjavik | C11 French |
| 23. Korchnoi vs Ulf Andersson |
 | 0-1 | 40 |
1988 |
Brussels World Cup | D37 Queen's Gambit Declined |
| 24. Ulf Andersson vs Korchnoi |
 | 1-0 | 40 |
1989 |
Clermont | A15 English |
| 25. Ulf Andersson vs Korchnoi |
| ½-½ | 32 |
1989 |
Cup World, Shellefteo (Sweden) | A37 English, Symmetrical |