| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Ost-Hansen vs J Naeser |
| 1-0 | 41 | 1971 | European Junior Championship Preliminary | A07 King's Indian Attack |
| 2. T Ireton vs J Ost-Hansen |
| 0-1 | 31 | 1971 | European Junior Championship Preliminary | B43 Sicilian, Kan, 5.Nc3 |
| 3. J Ost-Hansen vs Marjanovic |
| ½-½ | 57 | 1971 | European Junior Championship Preliminary | A07 King's Indian Attack |
| 4. K Kaiszauri vs J Ost-Hansen |
| ½-½ | 16 | 1971 | European Junior Championship Preliminary | B17 Caro-Kann, Steinitz Variation |
| 5. A Gorchakov vs J Ost-Hansen |
| ½-½ | 10 | 1971 | European Junior Championship Preliminary | A07 King's Indian Attack |
| 6. J Ost-Hansen vs R Borngaesser |
| ½-½ | 17 | 1971 | European Junior Championship Preliminary | A00 Uncommon Opening |
| 7. P Spacek vs J Ost-Hansen |
| 0-1 | 56 | 1971 | European Junior Championship Preliminary | D63 Queen's Gambit Declined, Orthodox Defense |
| 8. P Velikov vs J Ost-Hansen |
| 1-0 | 54 | 1971 | European Junior Championship 1971/72 | B17 Caro-Kann, Steinitz Variation |
| 9. J Ost-Hansen vs A Gorchakov |
| ½-½ | 19 | 1971 | European Junior Championship 1971/72 | A00 Uncommon Opening |
| 10. K Kaiszauri vs J Ost-Hansen |
| 1-0 | 29 | 1971 | European Junior Championship 1971/72 | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 11. J Ost-Hansen vs Sax |
| 0-1 | 43 | 1972 | European Junior Championship 1971/72 | C33 King's Gambit Accepted |
| 12. M Stean vs J Ost-Hansen |
| 0-1 | 32 | 1972 | European Junior Championship 1971/72 | B42 Sicilian, Kan |
| 13. J Ost-Hansen vs R Borngaesser |
| 0-1 | 36 | 1972 | European Junior Championship 1971/72 | A00 Uncommon Opening |
| 14. F Natalucci vs J Ost-Hansen |
| ½-½ | 40 | 1972 | European Junior Championship 1971/72 | C95 Ruy Lopez, Closed, Breyer |
| 15. Marjanovic vs J Ost-Hansen |
| 1-0 | 38 | 1972 | European Junior Championship 1971/72 | B43 Sicilian, Kan, 5.Nc3 |
| 16. J Ost-Hansen vs M Pujol Sans |
| 1-0 | 40 | 1972 | European Junior Championship 1971/72 | A00 Uncommon Opening |
| 17. S Hamann vs J Ost-Hansen |
| 1-0 | 54 | 1972 | Danish Championship | B43 Sicilian, Kan, 5.Nc3 |
| 18. J Ost-Hansen vs E Pedersen |
| 1-0 | 41 | 1972 | Danish Championship | A07 King's Indian Attack |
| 19. P Norby vs J Ost-Hansen |
| ½-½ | 17 | 1972 | Danish Championship | E67 King's Indian, Fianchetto |
| 20. J Ost-Hansen vs J Hvenekilde |
| 1-0 | 53 | 1972 | Danish Championship | A00 Uncommon Opening |
| 21. K Pedersen vs J Ost-Hansen |
| ½-½ | 19 | 1972 | Danish Championship | B10 Caro-Kann |
| 22. J Ost-Hansen vs K Rosell |
| 1-0 | 40 | 1972 | Danish Championship | A07 King's Indian Attack |
| 23. J Enevoldsen vs J Ost-Hansen |
| ½-½ | 32 | 1972 | Danish Championship | B43 Sicilian, Kan, 5.Nc3 |
| 24. J Ost-Hansen vs A Ingerslev |
| ½-½ | 16 | 1972 | Danish Championship | A07 King's Indian Attack |
| 25. P Frausing vs J Ost-Hansen |
| ½-½ | 28 | 1972 | Danish Championship | B17 Caro-Kann, Steinitz Variation |
Kibitzing
