| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. T Melngailis vs B Sundberg |
| 0-1 | 38 | 1936 | non-FIDE Munich Olympiad | A14 English |
| 2. B Sundberg vs H Nielsen |
| 1-0 | 38 | 1936 | non-FIDE Munich Olympiad | D05 Queen's Pawn Game |
| 3. B Sundberg vs B Tot |
| 0-1 | 47 | 1936 | non-FIDE Munich Olympiad | A90 Dutch |
| 4. H Max vs B Sundberg |
| 0-1 | 37 | 1936 | non-FIDE Munich Olympiad | C47 Four Knights |
| 5. L Sepp vs B Sundberg |
 | 0-1 | 34 | 1936 | non-FIDE Munich Olympiad | A15 English |
| 6. A E Candolin vs B Sundberg |
| 1-0 | 29 | 1936 | non-FIDE Munich Olympiad | C49 Four Knights |
| 7. B Sundberg vs Fine |
| 0-1 | 60 | 1937 | Wasa SK 20th Anniversery | D04 Queen's Pawn Game |
| 8. B Sundberg vs J Collett |
| 1-0 | 26 | 1937 | Wasa SK 20th Anniversery | D05 Queen's Pawn Game |
| 9. Stahlberg vs B Sundberg |
| 1-0 | 55 | 1937 | Wasa SK 20th Anniversery | E53 Nimzo-Indian, 4.e3 |
| 10. B Sundberg vs G Danielsson |
| 0-1 | 49 | 1937 | Wasa SK 20th Anniversery | A04 Reti Opening |
| 11. Stahlberg vs B Sundberg |
| 1-0 | 21 | 1938 | Nordic Congress, Orebro | D68 Queen's Gambit Declined, Orthodox Defense, Classical |
| 12. W Pettersson vs B Sundberg |
| 0-1 | 38 | 1938 | Ludvig Collijn Jubilee Tournament | A28 English |
| 13. H Carlsson vs B Sundberg |
| ½-½ | 50 | 1938 | Ludvig Collijn Jubilee Tournament | E33 Nimzo-Indian, Classical |
| 14. B Sundberg vs A Bergkvist |
| 0-1 | 44 | 1938 | Ludvig Collijn Jubilee Tournament | E11 Bogo-Indian Defense |
| 15. B Sundberg vs G Stoltz |
| 0-1 | 25 | 1938 | Ludvig Collijn Jubilee Tournament | D69 Queen's Gambit Declined, Orthodox Defense, Classical, 13.de |
| 16. B Sundberg vs S Carlsson |
| ½-½ | 54 | 1938 | Ludvig Collijn Jubilee Tournament | A47 Queen's Indian |
| 17. N Bergkvist vs B Sundberg |
| 1-0 | 43 | 1938 | Ludvig Collijn Jubilee Tournament | E23 Nimzo-Indian, Spielmann |
| 18. B Ekenberg vs B Sundberg |
| 1-0 | 49 | 1938 | Ludvig Collijn Jubilee Tournament | B74 Sicilian, Dragon, Classical |
| 19. H Carlsson vs B Sundberg |
| 1-0 | 28 | 1938 | Ludvig Collijn Jubilee Tournament | C83 Ruy Lopez, Open |
| 20. B Sundberg vs M Johansson |
| 1-0 | 30 | 1938 | Ludvig Collijn Jubilee Tournament | A48 King's Indian |
| 21. E Arnlind vs B Sundberg |
| 1-0 | 29 | 1940 | corr | C39 King's Gambit Accepted |
| 22. B Sundberg vs T Salo |
| 0-1 | 46 | 1945 | Match/Nation FIN-SWE | D04 Queen's Pawn Game |
| 23. T Salo vs B Sundberg |
| 0-1 | 41 | 1945 | Match/Nation FIN-SWE | A04 Reti Opening |
| 24. M Rantanen vs B Sundberg |
| 0-1 | 37 | 1946 | Match/Nation FIN-SWE | A14 English |
| 25. B Sundberg vs M Rantanen |
 | ½-½ | 33 | 1946 | Match/Nation FIN-SWE | D03 Torre Attack (Tartakower Variation) |
Kibitzing
