| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K Pulkkinen vs B Ostenstad |
| 0-1 | 47 |
1983 |
Nordic-tt | D42 Queen's Gambit Declined, Semi-Tarrasch, 7.Bd3 |
| 2. B Ostenstad vs Oll |
| 0-1 | 51 |
1984 |
Wch U20 | A77 Benoni, Classical, 9...Re8, 10.Nd2 |
| 3. M Abarca Aguirre vs B Ostenstad |
| 0-1 | 32 |
1984 |
Wch U20 | E12 Queen's Indian |
| 4. Larsen vs B Ostenstad |
 | 1-0 | 44 |
1985 |
Gausdal zt | A38 English, Symmetrical |
| 5. B Ostenstad vs Petursson |
| ½-½ | 52 |
1985 |
Norway | D34 Queen's Gambit Declined, Tarrasch |
| 6. B Ostenstad vs Hebden |
| 0-1 | 38 |
1987 |
Gausdal Internationa | A43 Old Benoni |
| 7. B Ostenstad vs Jansa |
| ½-½ | 30 |
1988 |
Oslo | A48 King's Indian |
| 8. Lautier vs B Ostenstad |
| 1-0 | 31 |
1988 |
It shv | D86 Grunfeld, Exchange |
| 9. Jansa vs B Ostenstad |
| 1-0 | 32 |
1988 |
Gausdal | B10 Caro-Kann |
| 10. B Ostenstad vs Christiansen |
| 1-0 | 63 |
1988 |
It (open) | A48 King's Indian |
| 11. B Ostenstad vs Polugaevsky |
| 0-1 | 39 |
1988 |
Reykjavik op | E15 Queen's Indian |
| 12. A Thorsteinsson vs B Ostenstad |
| ½-½ | 44 |
1988 |
Reykjavik cq | C55 Two Knights Defense |
| 13. Petursson vs B Ostenstad |
| 0-1 | 39 |
1988 |
Ch Bayern | E12 Queen's Indian |
| 14. Zsuzsa Polgar vs B Ostenstad |
| 1-0 | 58 |
1988 |
Reykjavik op | E69 King's Indian, Fianchetto, Classical Main line |
| 15. N Davies vs B Ostenstad |
 | 1-0 | 34 |
1988 |
Oslo (Norway) | B01 Scandinavian |
| 16. B Ostenstad vs J Lechtynsky |
| 1-0 | 47 |
1989 |
Tirnavia-B | A48 King's Indian |
| 17. B Ostenstad vs I Stohl |
| 0-1 | 28 |
1989 |
Trnava II | D03 Torre Attack (Tartakower Variation) |
| 18. B Ostenstad vs J Yrjola |
| ½-½ | 35 |
1989 |
Espoo zt | B08 Pirc, Classical |
| 19. B Ostenstad vs E Liss |
| 1-0 | 61 |
1989 |
EU-chT (Men) | A17 English |
| 20. E Lobron vs B Ostenstad |
| 1-0 | 49 |
1989 |
EU-chT (Men) | D35 Queen's Gambit Declined |
| 21. B Ostenstad vs H Olafsson |
| ½-½ | 78 |
1989 |
Espoo zt | D85 Grunfeld |
| 22. B Ostenstad vs J L Arnason |
| 1-0 | 56 |
1989 |
Espoo zt | E15 Queen's Indian |
| 23. R Alvarez Ibarra vs B Ostenstad |
| ½-½ | 37 |
1989 |
EU-chT (Men) | B14 Caro-Kann, Panov-Botvinnik Attack |
| 24. B Ostenstad vs Hug |
| ½-½ | 20 |
1989 |
EU-chT (Men) | E61 King's Indian |
| 25. T Wedberg vs B Ostenstad |
| 1-0 | 37 |
1989 |
Espoo zt | B32 Sicilian |