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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. O Jakobsen vs W Schmidt |
| ½-½ | 86 |
1961 |
Wch U20 prel-A | B86 Sicilian, Fischer-Sozin Attack |
| 2. O Jakobsen vs Kurajica |
| 1-0 | 68 |
1964 |
Zurich - jungmeister | B40 Sicilian |
| 3. O Jakobsen vs G Lee |
| 1-0 | 41 |
1964 |
Zurich - jungmeister | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 4. O Jakobsen vs A Kapengut |
| 0-1 | 41 |
1966 |
Orebro Stud olm fA | B30 Sicilian |
| 5. O Jakobsen vs Huebner |
| ½-½ | 39 |
1971 |
DEN-FRG m | B81 Sicilian, Scheveningen, Keres Attack |
| 6. O Jakobsen vs K Skold |
| 1-0 | 29 |
1971 |
Stockholm | B81 Sicilian, Scheveningen, Keres Attack |
| 7. O Jakobsen vs Ljubojevic |
| ½-½ | 28 |
1978 |
Buenos Aires olm | B90 Sicilian, Najdorf |
| 8. O Jakobsen vs Browne |
| 0-1 | 37 |
1978 |
23rd Olympiad | B85 Sicilian, Scheveningen, Classical |
| 9. O Jakobsen vs Speelman |
| ½-½ | 26 |
1979 |
Ribe | B22 Sicilian, Alapin |
| 10. O Jakobsen vs Csom |
| 0-1 | 41 |
1981 |
Esbjerg Vesterhav | B57 Sicilian |
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Secrets of Opening Surprises
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