| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J O'Brien vs P Wallace |
| ½-½ | 70 |
1974 |
Mulcahy | B06 Robatsch |
| 2. J Gibson vs P Wallace |
| 0-1 | 29 |
1974 |
Mulcahy | A00 Uncommon Opening |
| 3. P Wallace vs D Healy |
| ½-½ | 34 |
1974 |
Mulcahy | B17 Caro-Kann, Steinitz Variation |
| 4. J Short vs P Wallace |
| ½-½ | 36 |
1974 |
Mulcahy | E91 King's Indian |
| 5. P Wallace vs J Brennan |
| 1-0 | 31 |
1974 |
Mulcahy | B23 Sicilian, Closed |
| 6. P Wallace vs J Noone |
| ½-½ | 36 |
1974 |
Mulcahy | B23 Sicilian, Closed |
| 7. Kevin James vs P Wallace |
| 1-0 | 34 |
1976 |
IRL-ch | B06 Robatsch |
| 8. P Wallace vs V Dobrov |
| ½-½ | 48 |
2005 |
2nd South Wales International | B93 Sicilian, Najdorf, 6.f4 |
| 9. P Wallace vs P Wells |
| 0-1 | 30 |
2005 |
2nd Coventry Chess International | B89 Sicilian |
| 10. S Macgilchrist vs P Wallace |
| 0-1 | 31 |
2006 |
European Union Individual Championships | C45 Scotch Game |
| 11. J Redmond vs P Wallace |
| 1-0 | 60 |
2006 |
European Union Individual Championships | A25 English |
| 12. P Wallace vs D Robertson |
| ½-½ | 69 |
2006 |
European Union Individual Championships | B82 Sicilian, Scheveningen |
| 13. P Wallace vs Conquest |
| ½-½ | 50 |
2006 |
European Union Individual Championships | B44 Sicilian |
| 14. P Wallace vs Dgebuadze |
| 1-0 | 44 |
2006 |
European Union Individual Championships | C06 French, Tarrasch |
| 15. S Gordon vs P Wallace |
| 1-0 | 37 |
2006 |
European Union Individual Championships | E94 King's Indian, Orthodox |
| 16. R Soikkeli vs P Wallace |
| 0-1 | 23 |
2006 |
European Union Individual Championships | C29 Vienna Gambit |
| 17. W Armstrong vs P Wallace |
| 0-1 | 31 |
2006 |
European Union Individual Championships | B08 Pirc, Classical |
| 18. P Wallace vs Z Medvegy |
| 0-1 | 65 |
2006 |
European Union Individual Championships | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 19. P Wallace vs M Duke |
| 1-0 | 32 |
2006 |
European Union Individual Championships | B93 Sicilian, Najdorf, 6.f4 |
| 20. P Wallace vs A S Dekker |
| 1-0 | 19 |
2007 |
5th Gibraltar Chess Festival | B82 Sicilian, Scheveningen |
| 21. T Abergal vs P Wallace |
| 1-0 | 38 |
2007 |
5th Gibraltar Chess Festival | C55 Two Knights Defense |
| 22. E Player vs P Wallace |
| ½-½ | 28 |
2007 |
5th Gibraltar Chess Festival | D01 Richter-Veresov Attack |
| 23. I Teran-Alvarez vs P Wallace |
| 0-1 | 27 |
2007 |
5th Gibraltar Chess Festival | C64 Ruy Lopez, Classical |
| 24. P Wallace vs R Savory |
| ½-½ | 40 |
2007 |
5th Gibraltar Chess Festival | B93 Sicilian, Najdorf, 6.f4 |
| 25. P Wallace vs C Walton |
| 1-0 | 59 |
2007 |
5th Gibraltar Chess Festival | C05 French, Tarrasch |