| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K S Ojanen vs A Snaevarr |
| 1-0 | 33 |
1936 |
Munich Olympiad | A04 Reti Opening |
| 2. Gilg vs K S Ojanen |
| ½-½ | 21 |
1936 |
Munich Olympiad | D63 Queen's Gambit Declined, Orthodox Defense |
| 3. Yury Toshev vs K S Ojanen |
| ½-½ | 31 |
1936 |
Munich Olympiad | E91 King's Indian |
| 4. K S Ojanen vs V Mezgailis |
| ½-½ | 17 |
1936 |
Munich Olympiad | E17 Queen's Indian |
| 5. P Bohosiewicz vs K S Ojanen |
| ½-½ | 49 |
1936 |
Munich Olympiad | E24 Nimzo-Indian, Samisch |
| 6. M Broeder vs K S Ojanen |
| ½-½ | 27 |
1936 |
Munich Olympiad | E60 King's Indian Defense |
| 7. K S Ojanen vs Saemisch |
| ½-½ | 38 |
1936 |
Munich Olympiad | E17 Queen's Indian |
| 8. K S Ojanen vs G Barcza |
 | 0-1 | 37 |
1936 |
Munich Olympiad | D22 Queen's Gambit Accepted |
| 9. Leopold Lenner vs K S Ojanen |
| 0-1 | 46 |
1936 |
Munich Olympiad | E94 King's Indian, Orthodox |
| 10. L Kremer vs K S Ojanen |
| 1-0 | 21 |
1936 |
Munich Olympiad | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
| 11. K S Ojanen vs C Pulcherio |
| ½-½ | 29 |
1936 |
Munich Olympiad | D63 Queen's Gambit Declined, Orthodox Defense |
| 12. L Abramavicius vs K S Ojanen |
| ½-½ | 60 |
1936 |
Munich Olympiad | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 13. K S Ojanen vs A Staehelin |
| ½-½ | 40 |
1936 |
Munich Olympiad | E22 Nimzo-Indian, Spielmann Variation |
| 14. K S Ojanen vs J Rasmussen |
| 1-0 | 31 |
1936 |
Munich Olympiad | D94 Grunfeld |
| 15. J Turn vs K S Ojanen |
| 0-1 | 56 |
1937 |
7th olm final | D17 Queen's Gambit Declined Slav |
| 16. K S Ojanen vs H C Christoffersen |
| 1-0 | 51 |
1937 |
7th olm final | A04 Reti Opening |
| 17. A De Groot vs K S Ojanen |
| ½-½ | 31 |
1937 |
7th olm final | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 18. T Regedzinski vs K S Ojanen |
| 1-0 | 22 |
1937 |
7th olm final | D18 Queen's Gambit Declined Slav, Dutch |
| 19. I Pleci vs K S Ojanen |
| 1-0 | 30 |
1937 |
Stockholm ol (Men) | A34 English, Symmetrical |
| 20. K S Ojanen vs F Zita |
| 1-0 | 33 |
1937 |
7th olm final | D09 Queen's Gambit Declined, Albin Counter Gambit, 5.g3 |
| 21. K S Ojanen vs A Vajda |
| 1-0 | 42 |
1937 |
7th olm final | E81 King's Indian, Samisch |
| 22. K S Ojanen vs Book |
| 1-0 | 62 |
1946 |
Helsinki | D20 Queen's Gambit Accepted |
| 23. Pachman vs K S Ojanen |
| 1-0 | 44 |
1949 |
Trencianske Teplice | D68 Queen's Gambit Declined, Orthodox Defense, Classical |
| 24. J Sefc vs K S Ojanen |
| ½-½ | 24 |
1949 |
Trencianske Teplice | C77 Ruy Lopez |
| 25. Rossolimo vs K S Ojanen |
| 1-0 | 21 |
1949 |
Trencianske Teplice | B83 Sicilian |