| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Ulf Andersson vs B Andersen |
 | 1-0 | 27 |
1967 |
Hango | B12 Caro-Kann Defense |
| 2. Vaganian vs Ulf Andersson |
| 1-0 | 48 |
1968 |
Groningen | A97 Dutch, Ilyin-Genevsky |
| 3. A Bryntse vs Ulf Andersson |
| 1-0 | 32 |
1968 |
corr | A02 Bird's Opening |
| 4. Ulf Andersson vs A Olsson |
| 1-0 | 18 |
1969 |
Sverige | C64 Ruy Lopez, Classical |
| 5. Ulf Andersson vs K Langeweg |
| 1-0 | 33 |
1969 |
Linkoping (Sweden) | C73 Ruy Lopez, Modern Steinitz Defense |
| 6. Ulf Andersson vs Z Nilsson |
| 1-0 | 50 |
1969 |
Sverige | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 7. Ulf Andersson vs H Akvist |
| 1-0 | 34 |
1969 |
Sverige | C81 Ruy Lopez, Open, Howell Attack |
| 8. Ulf Andersson vs B E Horberg |
| 1-0 | 28 |
1969 |
Sverige | B15 Caro-Kann |
| 9. Vaganian vs Ulf Andersson |
| 1-0 | 41 |
1969 |
EU-ch U20 prel | E69 King's Indian, Fianchetto, Classical Main line |
| 10. Ulf Andersson vs R Meulders |
| 1-0 | 26 |
1969 |
Stockholm Wch-jr | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 11. Ulf Andersson vs O Alfredsson |
| 1-0 | 20 |
1969 |
Sverige | B77 Sicilian, Dragon, Yugoslav Attack |
| 12. Karpov vs Ulf Andersson |
| 1-0 | 60 |
1969 |
Stockholm | C97 Ruy Lopez, Closed, Chigorin |
| 13. Ekenberg vs Ulf Andersson |
| 1-0 | 63 |
1969 |
Sverige | A02 Bird's Opening |
| 14. Ghizdavu vs Ulf Andersson |
| 1-0 | 27 |
1969 |
Netherlands | C77 Ruy Lopez |
| 15. Ulf Andersson vs M Johansson |
| 1-0 | 57 |
1969 |
Sverige | C54 Giuoco Piano |
| 16. Gheorghiu vs Ulf Andersson |
| 1-0 | 37 |
1970 |
Siegen (Germany) | D32 Queen's Gambit Declined, Tarrasch |
| 17. Ulf Andersson vs G Forintos |
| 1-0 | 35 |
1970 |
Wijk aan Zee | B30 Sicilian |
| 18. S Mariotti vs Ulf Andersson |
| 1-0 | 35 |
1970 |
Sombor | B06 Robatsch |
| 19. Portisch vs Ulf Andersson |
| 1-0 | 51 |
1970 |
Zt (play-off), Prague (Czech Republic) | E46 Nimzo-Indian |
| 20. Ulf Andersson vs S Tatai |
| 1-0 | 41 |
1970 |
Siegen (Germany) | B93 Sicilian, Najdorf, 6.f4 |
| 21. Ulf Andersson vs L Day |
| 1-0 | 28 |
1970 |
Wijk aan Zee | B10 Caro-Kann |
| 22. I Radulov vs Ulf Andersson |
| 1-0 | 38 |
1970 |
Siegen olm prel | B90 Sicilian, Najdorf |
| 23. G Antunac vs Ulf Andersson |
| 1-0 | 42 |
1970 |
Wijk aan Zee (Netherlands) | E91 King's Indian |
| 24. Ivkov vs Ulf Andersson |
| 1-0 | 40 |
1970 |
Prag | A56 Benoni Defense |
| 25. K Honfi vs Ulf Andersson |
| 1-0 | 53 |
1970 |
Wijk aan Zee | C50 Giuoco Piano |
