| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. T Porrasmaa vs F Nordstrom |
| ½-½ | 20 | 1966 | Orebro Stud olm prelim1 | E20 Nimzo-Indian |
| 2. L Spassov vs T Porrasmaa |
 | 0-1 | 24 | 1966 | Orebro Stud olm fA | B07 Pirc |
| 3. T Porrasmaa vs A Kapengut |
| 0-1 | 26 | 1966 | Orebro Stud olm fA | D91 Grunfeld, 5.Bg5 |
| 4. E Mozes vs T Porrasmaa |
| 1-0 | 12 | 1966 | Orebro Stud olm fA | B20 Sicilian |
| 5. T Porrasmaa vs E Carmel |
| 0-1 | 40 | 1966 | Orebro Stud olm fA | E92 King's Indian |
| 6. T Porrasmaa vs M Basman |
| 0-1 | 41 | 1966 | Orebro Stud olm fA | D25 Queen's Gambit Accepted |
| 7. T Porrasmaa vs M Cebalo |
| ½-½ | 27 | 1966 | Orebro Stud olm fA | D87 Grunfeld, Exchange |
| 8. E Nagy vs T Porrasmaa |
| 1-0 | 38 | 1966 | Orebro Stud olm fA | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 9. T Porrasmaa vs M Moe |
| 0-1 | 38 | 1966 | Orebro Stud olm fA | D87 Grunfeld, Exchange |
| 10. M Schoeneberg vs T Porrasmaa |
| ½-½ | 51 | 1966 | Orebro Stud olm fA | B98 Sicilian, Najdorf |
| 11. H MacGrillen vs T Porrasmaa |
| ½-½ | 16 | 1968 | WchT U26 15th fin-B | E91 King's Indian |
| 12. T Porrasmaa vs F Strobel |
| 0-1 | 25 | 1968 | WchT U26 15th fin-B | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 13. I Nei vs T Porrasmaa |
| 1-0 | 24 | 1989 | Joensuu op | A53 Old Indian |
| 14. T Porrasmaa vs K Sorri |
| 0-1 | 49 | 1989 | Rantasalmi op | D03 Torre Attack (Tartakower Variation) |
| 15. T Porrasmaa vs T Viljava |
| 1-0 | 48 | 1990 | FIN-chT | A46 Queen's Pawn Game |
| 16. G Kuzmin vs T Porrasmaa |
| 1-0 | 41 | 1992 | Heart of Finland Open | A10 English |
| 17. H Karner vs T Porrasmaa |
| 0-1 | 16 | 1992 | Heart of Finland Open | A46 Queen's Pawn Game |
| 18. J Hector vs T Porrasmaa |
| 1-0 | 43 | 1993 | Heart of Finland Open | B06 Robatsch |
| 19. J Penttinen vs T Porrasmaa |
| 1-0 | 24 | 1993 | Heart of Finland Open | B06 Robatsch |
| 20. T Porrasmaa vs T Sihvonen |
| 1-0 | 34 | 1993 | Heart of Finland Open | D02 Queen's Pawn Game |
| 21. K Sorri vs T Porrasmaa |
| ½-½ | 62 | 1994 | FIN-chT | A43 Old Benoni |
| 22. T Porrasmaa vs T Keskisarja |
| 0-1 | 17 | 1995 | Turku op | A46 Queen's Pawn Game |
| 23. M Rychagov vs T Porrasmaa |
| 1-0 | 30 | 1995 | Kuopio op1 | B32 Sicilian |
| 24. Y Rantanen vs T Porrasmaa |
| 1-0 | 36 | 1995 | Kuopio op2 | B40 Sicilian |
| 25. T Porrasmaa vs T Sammalvuo |
| 1-0 | 44 | 1995 | Kuopio op1 | A46 Queen's Pawn Game |
Kibitzing
