| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Aijala vs E Mozes |
| ½-½ | 30 | 1964 | WchT U26 11th fin-B | C15 French, Winawer |
| 2. J Aijala vs C B Wood |
| 0-1 | 31 | 1964 | WchT U26 11th fin-B | C15 French, Winawer |
| 3. R Giot vs J Aijala |
| 0-1 | 40 | 1964 | WchT U26 11th fin-B | B58 Sicilian |
| 4. A Marchioli vs J Aijala |
| 0-1 | 55 | 1964 | WchT U26 11th fin-B | C74 Ruy Lopez, Modern Steinitz Defense |
| 5. J Piket vs J Aijala |
 | 0-1 | 42 | 1964 | WchT U26 11th fin-B | A43 Old Benoni |
| 6. G Pihlgren vs J Aijala |
| 1-0 | 25 | 1964 | WchT U26 11th fin-B | A38 English, Symmetrical |
| 7. J Aijala vs P Pesonen |
| 1-0 | 27 | 1965 | 3rd Finnish Open | C13 French |
| 8. J Aijala vs J Stefanov |
| 0-1 | 30 | 1966 | Orebro Stud olm fA | B14 Caro-Kann, Panov-Botvinnik Attack |
| 9. Gulko vs J Aijala |
| 1-0 | 34 | 1966 | Orebro Stud olm fA | A44 Old Benoni Defense |
| 10. E Scholl vs J Aijala |
| 1-0 | 40 | 1966 | Orebro Stud olm fA | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 11. W Hartston vs J Aijala |
| 1-0 | 41 | 1966 | Orebro Stud olm fA | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 12. J Aijala vs B Nagy |
| 0-1 | 37 | 1966 | Orebro Stud olm fA | B43 Sicilian, Kan, 5.Nc3 |
| 13. B Sorensen vs J Aijala |
| 1-0 | 26 | 1966 | Orebro Stud olm fA | D46 Queen's Gambit Declined Semi-Slav |
| 14. J Aijala vs M Boehnisch |
| 0-1 | 33 | 1966 | Orebro Stud olm fA | B09 Pirc, Austrian Attack |
| 15. J Aijala vs P Maattanen |
| 1-0 | 21 | 1967 | Finnish Chess Union (SSL) | B09 Pirc, Austrian Attack |
| 16. N Ivanov vs J Aijala |
| 1-0 | 62 | 1967 | World Student Team Championship qual-2 | A04 Reti Opening |
| 17. J Aijala vs J Boudy Bueno |
| 1-0 | 62 | 1967 | World Student Team Championship Final-B | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 18. J Aijala vs I Farago |
| 0-1 | 41 | 1967 | World Student Team Championship Final-B | C01 French, Exchange |
| 19. J Aijala vs F Goethals |
| 0-1 | 27 | 1967 | World Student Team Championship qual-2 | B94 Sicilian, Najdorf |
| 20. J Aijala vs T Leppamaki |
| 1-0 | 26 | 1968 | Master Candidates | B89 Sicilian |
| 21. E Bukacek vs J Aijala |
| ½-½ | 15 | 1969 | World Student Team Championship qual-5 | A07 King's Indian Attack |
| 22. J Aijala vs Ljubojevic |
| 0-1 | 24 | 1969 | World Student Team Championship qual-5 | B56 Sicilian |
| 23. M Boelen vs J Aijala |
| 0-1 | 40 | 1969 | World Student Team Championship qual-5 | B20 Sicilian |
| 24. J Aijala vs A Dickson |
| 1-0 | 25 | 1969 | World Student Team Championship qual-5 | E29 Nimzo-Indian, Samisch |
| 25. J Aijala vs S Ivanov |
| 0-1 | 45 | 1969 | World Student Team Championship qual-5 | D48 Queen's Gambit Declined Semi-Slav, Meran |
Kibitzing
