| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. P Petri vs L B Hansen |
| 0-1 | 23 | 1986 | European Junior Championship 1986/87 | C15 French, Winawer |
| 2. A Savva vs P Petri |
| 0-1 | 19 | 1986 | European Junior Championship 1986/87 | A16 English |
| 3. R Djurhuus vs P Petri |
| 1-0 | 48 | 1986 | European Junior Championship 1986/87 | C55 Two Knights Defense |
| 4. P Petri vs J Koch |
| 0-1 | 34 | 1986 | European Junior Championship 1986/87 | A04 Reti Opening |
| 5. P Petri vs J D Sullivan |
| 1-0 | 22 | 1986 | European Junior Championship 1986/87 | B73 Sicilian, Dragon, Classical |
| 6. M R Burgess vs P Petri |
| 1-0 | 73 | 1986 | European Junior Championship 1986/87 | A13 English |
| 7. K Greer vs P Petri |
| 1-0 | 32 | 1986 | European Junior Championship 1986/87 | B25 Sicilian, Closed |
| 8. P Petri vs C Wians |
| 0-1 | 37 | 1986 | European Junior Championship 1986/87 | B40 Sicilian |
| 9. P Petri vs A Gunay |
| 1-0 | 27 | 1986 | European Junior Championship 1986/87 | C90 Ruy Lopez, Closed |
| 10. R Damaso vs P Petri |
| 0-1 | 16 | 1986 | European Junior Championship 1986/87 | A45 Queen's Pawn Game |
| 11. T Kokkila vs P Petri |
| 1-0 | 32 | 1986 | European Junior Championship 1986/87 | D92 Grunfeld, 5.Bf4 |
| 12. P Petri vs F Manca |
| 0-1 | 59 | 1987 | European Junior Championship 1986/87 | E81 King's Indian, Samisch |
| 13. R Wessman vs P Petri |
| 1-0 | 29 | 1987 | European Junior Championship 1986/87 | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 14. P Petri vs V Puri |
| 0-1 | 38 | 1987 | World Junior Championship | C67 Ruy Lopez |
| 15. I Weerakoon vs P Petri |
| 0-1 | 34 | 1987 | World Junior Championship | B25 Sicilian, Closed |
| 16. I Datu vs P Petri |
| ½-½ | 34 | 1987 | World Junior Championship | D78 Neo-Grunfeld, 6.O-O c6 |
| 17. A E Moussa vs P Petri |
| ½-½ | 38 | 1987 | World Junior Championship | D87 Grunfeld, Exchange |
| 18. E Sevillano vs P Petri |
| ½-½ | 34 | 1987 | World Junior Championship | D87 Grunfeld, Exchange |
| 19. P Petri vs T Reilly |
| 0-1 | 40 | 1987 | World Junior Championship | B07 Pirc |
| 20. G Rechlis vs P Petri |
| ½-½ | 18 | 1987 | World Junior Championship | B75 Sicilian, Dragon, Yugoslav Attack |
| 21. P Petri vs R Wessman |
| ½-½ | 60 | 1987 | World Junior Championship | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 22. P Petri vs Ali Mohammed |
| ½-½ | 53 | 1987 | World Junior Championship | B32 Sicilian |
| 23. P Petri vs Sinatra Dharma |
| 1-0 | 40 | 1987 | World Junior Championship | C15 French, Winawer |
| 24. P Petri vs J Degraeve |
| 0-1 | 25 | 1987 | World Junior Championship | B33 Sicilian |
| 25. P Petri vs M Ballmann |
| 0-1 | 32 | 1987 | World Junior Championship | B76 Sicilian, Dragon, Yugoslav Attack |
Kibitzing
