| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Ojanen vs F Zita |
| 1-0 | 33 |
1937 |
7th olm final | D09 Queen's Gambit Declined, Albin Counter Gambit, 5.g3 |
| 2. Ojanen vs A Vajda |
| 1-0 | 42 |
1937 |
7th olm final | E81 King's Indian, Samisch |
| 3. J Turn vs Ojanen |
| 0-1 | 56 |
1937 |
7th olm final | D17 Queen's Gambit Declined Slav |
| 4. Ojanen vs H C Christoffersen |
| 1-0 | 51 |
1937 |
7th olm final | A04 Reti Opening |
| 5. A De Groot vs Ojanen |
| ½-½ | 31 |
1937 |
7th olm final | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 6. T Regedzinski vs Ojanen |
| 1-0 | 22 |
1937 |
7th olm final | D18 Queen's Gambit Declined Slav, Dutch |
| 7. I Pleci vs Ojanen |
| 1-0 | 30 |
1937 |
Stockholm ol (Men) | A34 English, Symmetrical |
| 8. R Krogius vs Ojanen |
 | 1-0 | 14 |
1944 |
Helsinki | B21 Sicilian, 2.f4 and 2.d4 |
| 9. Ojanen vs Book |
| 1-0 | 62 |
1946 |
Helsinki | D20 Queen's Gambit Accepted |
| 10. Ojanen vs Julio Bolbochan |
| ½-½ | 34 |
1949 |
Trencianske Teplice (Slovakia) | D97 Grunfeld, Russian |
| 11. Ojanen vs O'Kelly |
| ½-½ | 54 |
1949 |
Tr.Teplice | E41 Nimzo-Indian |
| 12. Ojanen vs Ujtelky |
| ½-½ | 58 |
1949 |
Trencianske Teplice | D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 |
| 13. Ojanen vs Szabo |
| 0-1 | 41 |
1949 |
Trencianske-Teplice | A09 Reti Opening |
| 14. J Sefc vs Ojanen |
| ½-½ | 24 |
1949 |
Trencianske Teplice | C77 Ruy Lopez |
| 15. E Paoli vs Ojanen |
| 1-0 | 17 |
1949 |
Trencianske Teplice (Slovakia) | C57 Two Knights |
| 16. Ojanen vs Julio Bolbochan |
 | 0-1 | 17 |
1950 |
Dubrovnik olm | E49 Nimzo-Indian, 4.e3, Botvinnik System |
| 17. Ojanen vs A Vestol |
| ½-½ | 51 |
1950 |
Dubrovnik olm | E41 Nimzo-Indian |
| 18. J Sumar vs Ojanen |
| 1-0 | 53 |
1950 |
Dubrovnik olm | A91 Dutch Defense |
| 19. G Porreca vs Ojanen |
| ½-½ | 40 |
1950 |
Dubrovnik olm | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 20. Schmid vs Ojanen |
| ½-½ | 26 |
1950 |
Dubrovnik olm | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 21. Ojanen vs Rossolimo |
| 1-0 | 31 |
1950 |
Dubrovnik olm | A04 Reti Opening |
| 22. Ojanen vs T Van Scheltinga |
| 0-1 | 23 |
1950 |
Dubrovnik olm | D44 Queen's Gambit Declined Semi-Slav |
| 23. Ojanen vs R Flores-Alvarez |
| ½-½ | 27 |
1950 |
Dubrovnik olm | D94 Grunfeld |
| 24. Ojanen vs F Mastichiadis |
| 1-0 | 30 |
1950 |
Dubrovnik olm | D51 Queen's Gambit Declined |
| 25. Shainswit vs Ojanen |
| ½-½ | 34 |
1950 |
Dubrovnik olm | A95 Dutch, Stonewall |