| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Portisch vs Ulf Andersson |
| 1-0 | 51 |
1970 |
Zt (play-off), Prague (Czech Republic) | E46 Nimzo-Indian |
| 2. P Smederevac vs Ulf Andersson |
| ½-½ | 17 |
1970 |
Wijk aan Zee | E56 Nimzo-Indian, 4.e3, Main line with 7...Nc6 |
| 3. A Zaitsev vs Ulf Andersson |
| ½-½ | 45 |
1970 |
Debrecen | E43 Nimzo-Indian, Fischer Variation |
| 4. J H Donner vs Ulf Andersson |
| ½-½ | 53 |
1971 |
Palma de Mallorca | E41 Nimzo-Indian |
| 5. Szabo vs Ulf Andersson |
| ½-½ | 37 |
1971 |
Goteborg | E26 Nimzo-Indian, Samisch |
| 6. Gligoric vs Ulf Andersson |
 | 1-0 | 50 |
1971 |
West Berlin (Germany) | E53 Nimzo-Indian, 4.e3 |
| 7. Gligoric vs Ulf Andersson |
| ½-½ | 41 |
1971 |
Wijk aan Zee Hoogovens A, NED | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 8. Ivkov vs Ulf Andersson |
| ½-½ | 23 |
1971 |
Stockholm | E46 Nimzo-Indian |
| 9. F Olafsson vs Ulf Andersson |
 | 0-1 | 76 |
1972 |
Reykjavik | E41 Nimzo-Indian |
| 10. Keene vs Ulf Andersson |
| ½-½ | 19 |
1972 |
Reykjavik | E46 Nimzo-Indian |
| 11. Wade vs Ulf Andersson |
| ½-½ | 41 |
1972 |
Teesside | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
| 12. Timman vs Ulf Andersson |
 | 0-1 | 92 |
1972 |
Reykjavik | E53 Nimzo-Indian, 4.e3 |
| 13. Ivkov vs Ulf Andersson |
| ½-½ | 29 |
1973 |
2nd AVRO | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 14. M Gerusel vs Ulf Andersson |
| 0-1 | 43 |
1973 |
Dortmund | E39 Nimzo-Indian, Classical, Pirc Variation |
| 15. Bronstein vs Ulf Andersson |
| ½-½ | 29 |
1973 |
Tallinn | E41 Nimzo-Indian |
| 16. J H Donner vs Ulf Andersson |
| 0-1 | 69 |
1973 |
IBM | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 17. D Marovic vs Ulf Andersson |
| 1-0 | 56 |
1973 |
Amsterdam IBM | E38 Nimzo-Indian, Classical, 4...c5 |
| 18. H Karner vs Ulf Andersson |
| ½-½ | 13 |
1973 |
Tallinn | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 19. Gligoric vs Ulf Andersson |
| ½-½ | 38 |
1974 |
Olympiad, Nice (France) | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 20. Gligoric vs Ulf Andersson |
 | 1-0 | 49 |
1974 |
Manila | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 21. Kraidman vs Ulf Andersson |
| ½-½ | 19 |
1974 |
Manila | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 22. Beliavsky vs Ulf Andersson |
| ½-½ | 26 |
1974 |
Las Palmas | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 23. Larsen vs Ulf Andersson |
 | 1-0 | 40 |
1975 |
Match, Stockholm (Sweden) | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 24. F Visier Segovia vs Ulf Andersson |
| 0-1 | 29 |
1975 |
Las Palmas | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 25. N Stull vs Ulf Andersson |
| 0-1 | 37 |
1975 |
Pula zt | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |