| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. T Pettersson vs T Luukkonen |
| 0-1 | 28 |
2001 |
Heart of Finland Open | A35 English, Symmetrical |
| 2. S Nyysti vs T Pettersson |
| ½-½ | 17 |
2001 |
Heart of Finland Open | B07 Pirc |
| 3. E Solozhenkin vs T Pettersson |
| 1-0 | 51 |
2001 |
Heart of Finland Open | E62 King's Indian, Fianchetto |
| 4. T Pettersson vs T Franssila |
| ½-½ | 54 |
2001 |
Heart of Finland Open | D31 Queen's Gambit Declined |
| 5. T Gelashvili vs T Pettersson |
| 1-0 | 29 |
2004 |
Dos Hermanas | B00 Uncommon King's Pawn Opening |
| 6. Lenderman vs T Pettersson |
| 1-0 | 100 |
2004 |
Internet Section Blitz 07B g/8'+2 | B08 Pirc, Classical |
| 7. F Wolferink vs T Pettersson |
| 0-1 | 21 |
2006 |
Midnight Sun Chess Challenge | B08 Pirc, Classical |
| 8. T Pettersson vs F Wuts |
| 1-0 | 55 |
2006 |
Midnight Sun Chess Challenge | B00 Uncommon King's Pawn Opening |
| 9. T Pettersson vs T Soraas |
| ½-½ | 9 |
2006 |
Midnight Sun Chess Challenge | A38 English, Symmetrical |
| 10. A G Hagen vs T Pettersson |
| 0-1 | 44 |
2006 |
Midnight Sun Chess Challenge | B09 Pirc, Austrian Attack |
| 11. A Esbensen vs T Pettersson |
| ½-½ | 54 |
2006 |
Midnight Sun Chess Challenge | A41 Queen's Pawn Game (with ...d6) |
| 12. T Pettersson vs K Lie |
| 0-1 | 32 |
2006 |
Midnight Sun Chess Challenge | A04 Reti Opening |
| 13. T Pettersson vs T Engqvist |
| 0-1 | 71 |
2006 |
Rilton Cup | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 14. T Pettersson vs S Shipov |
| 0-1 | 24 |
2006 |
Midnight Sun Chess Challenge | D86 Grunfeld, Exchange |
| 15. K A Hansen vs T Pettersson |
| 0-1 | 38 |
2006 |
Midnight Sun Chess Challenge | B09 Pirc, Austrian Attack |
| 16. S Brynell vs T Pettersson |
| 1-0 | 35 |
2006 |
Rilton Cup | B08 Pirc, Classical |
| 17. R Bjerke vs T Pettersson |
| 0-1 | 38 |
2006 |
Midnight Sun Chess Challenge | E92 King's Indian |
| 18. M Brodsky vs T Pettersson |
| 1-0 | 75 |
2007 |
Arctic Chess Challenge | E92 King's Indian |
| 19. T Pettersson vs J L Hammer |
| 0-1 | 41 |
2007 |
Arctic Chess Challenge | A08 King's Indian Attack |
| 20. T Pettersson vs K Toma |
| 1-0 | 41 |
2007 |
Arctic Chess Challenge | A15 English |
| 21. R Madsen vs T Pettersson |
| 0-1 | 30 |
2007 |
Arctic Chess Challenge | A41 Queen's Pawn Game (with ...d6) |
| 22. T Pettersson vs D Suarez Pousa |
| ½-½ | 77 |
2007 |
Arctic Chess Challenge | A13 English |
| 23. T Pettersson vs H Westerinen |
| 0-1 | 38 |
2007 |
Arctic Chess Challenge | A15 English |
| 24. L Dworakowski vs T Pettersson |
| 0-1 | 35 |
2007 |
Arctic Chess Challenge | B08 Pirc, Classical |
| 25. D Markosian vs T Pettersson |
| ½-½ | 49 |
2007 |
Arctic Chess Challenge | E97 King's Indian |