| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. A S Segal vs O Jakobsen |
| ½-½ | 21 |
1966 |
Orebro Stud olm fA | E77 King's Indian |
| 27. I Radulov vs O Jakobsen |
| ½-½ | 29 |
1966 |
Orebro Stud olm fA | A25 English |
| 28. O Jakobsen vs M Schoeneberg |
| 1-0 | 42 |
1966 |
Orebro Stud olm fA | A05 Reti Opening |
| 29. R Hendrik Wostin vs O Jakobsen |
| ½-½ | 54 |
1966 |
Orebro Stud olm prelim5 | B48 Sicilian, Taimanov Variation |
| 30. O Jakobsen vs Hankipohja |
 | 1-0 | 21 |
1966 |
Orebro Stud olm fA | D02 Queen's Pawn Game |
| 31. I Farago vs O Jakobsen |
| 0-1 | 31 |
1966 |
Orebro Stud olm fA | A53 Old Indian |
| 32. O Jakobsen vs Z A Glenza |
| 1-0 | 49 |
1966 |
Orebro Stud olm prelim5 | A05 Reti Opening |
| 33. O Jakobsen vs D Rajkovic |
| ½-½ | 27 |
1966 |
Orebro Stud olm fA | A05 Reti Opening |
| 34. Keene vs O Jakobsen |
| ½-½ | 26 |
1966 |
Orebro Stud olm fA | A05 Reti Opening |
| 35. O Jakobsen vs J Dueball |
| ½-½ | 31 |
1969 |
Raach zt | A04 Reti Opening |
| 36. O Jakobsen vs R Hartoch |
| 0-1 | 34 |
1969 |
Raach zt | A04 Reti Opening |
| 37. O Jakobsen vs A Zwaig |
| ½-½ | 52 |
1969 |
Raach | A04 Reti Opening |
| 38. Smejkal vs O Jakobsen |
| 1-0 | 51 |
1969 |
Raach zt | E62 King's Indian, Fianchetto |
| 39. M Moe vs O Jakobsen |
| ½-½ | 41 |
1969 |
DEN | B93 Sicilian, Najdorf, 6.f4 |
| 40. Gligoric vs O Jakobsen |
| ½-½ | 35 |
1970 |
EU-chT (Men) | E93 King's Indian, Petrosian System |
| 41. Portisch vs O Jakobsen |
| ½-½ | 26 |
1970 |
? | A04 Reti Opening |
| 42. Uhlmann vs O Jakobsen |
| ½-½ | 49 |
1970 |
Ch Europe Kapfenberg (Austria) | E75 King's Indian, Averbakh, Main line |
| 43. Hort vs O Jakobsen |
| 1-0 | 46 |
1970 |
Kapfenberg ETC | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 44. O Jakobsen vs Bobotsov |
| ½-½ | 44 |
1970 |
EU-chT (Men) | A43 Old Benoni |
| 45. O Jakobsen vs Petrosian |
| ½-½ | 34 |
1970 |
Kapfenberg | A40 Queen's Pawn Game |
| 46. Huebner vs O Jakobsen |
| 1-0 | 41 |
1971 |
DEN-FRG m | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 47. O Jakobsen vs K Skold |
| 1-0 | 29 |
1971 |
Stockholm | B81 Sicilian, Scheveningen, Keres Attack |
| 48. O Jakobsen vs Huebner |
| ½-½ | 39 |
1971 |
DEN-FRG m | B81 Sicilian, Scheveningen, Keres Attack |
| 49. B Malich vs O Jakobsen |
| 1-0 | 42 |
1971 |
EU-chT prel | A61 Benoni |
| 50. K Darga vs O Jakobsen |
| ½-½ | 22 |
1972 |
Skopje ol (Men) fin-A | A07 King's Indian Attack |