| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. P Boersma vs P G Henry |
| 1-0 | 26 |
1966 |
Glorney Cup | A46 Queen's Pawn Game |
| 2. V Maher vs P G Henry |
| 0-1 | 38 |
1967 |
IRL-ch | E26 Nimzo-Indian, Samisch |
| 3. Tseshkovsky vs P G Henry |
| 1-0 | 40 |
1969 |
WchT U26 qual-A | C98 Ruy Lopez, Closed, Chigorin |
| 4. P G Henry vs A Pinkerton |
| 0-1 | 28 |
1969 |
Ulster Trophy | B40 Sicilian |
| 5. P G Henry vs Keene |
 | 0-1 | 32 |
1969 |
Cambride College Ch. | E43 Nimzo-Indian, Fischer Variation |
| 6. P G Henry vs Keene |
  | 0-1 | 35 |
1970 |
Cambridge University Knockout Championship | E83 King's Indian, Samisch |
| 7. H MacGrillen vs P G Henry |
| ½-½ | 59 |
1971 |
Cork op | D37 Queen's Gambit Declined |
| 8. C McDevitt vs P G Henry |
| 0-1 | 40 |
1971 |
IRL-ch | A12 English with b3 |
| 9. G McCurdy vs P G Henry |
| ½-½ | 52 |
1971 |
IRL-ch | C14 French, Classical |
| 10. P G Henry vs J M Ribeiro |
| ½-½ | 65 |
1974 |
Nice ol prelim | C96 Ruy Lopez, Closed |
| 11. P G Henry vs Hecht |
| 0-1 | 33 |
1974 |
Irish Times Easter | B05 Alekhine's Defense, Modern |
| 12. P G Henry vs Jorge Lara |
| 0-1 | 33 |
1974 |
Nice ol final-C | B19 Caro-Kann, Classical |
| 13. P Jamieson vs P G Henry |
| 1-0 | 28 |
1974 |
Irish Times Easter | A04 Reti Opening |
| 14. P G Henry vs J L Guerra |
| 1-0 | 44 |
1974 |
Nice ol final-C | B28 Sicilian, O'Kelly Variation |
| 15. P G Henry vs W Heidenfeld |
| ½-½ | 20 |
1974 |
Irish Times Easter | C10 French |
| 16. P G Henry vs M F Littleton |
| 0-1 | 67 |
1974 |
Irish Times Easter | C76 Ruy Lopez, Modern Steinitz Defense, Fianchetto Variation |
| 17. E M Green vs P G Henry |
 | 1-0 | 25 |
1974 |
Nice Olympiad | A25 English |
| 18. P G Henry vs R Harris |
| 1-0 | 66 |
1974 |
Irish Times Easter | B23 Sicilian, Closed |
| 19. H MacGrillen vs P G Henry |
| 0-1 | 41 |
1974 |
Irish Times Easter | D55 Queen's Gambit Declined |
| 20. B Kernan vs P G Henry |
| 0-1 | 43 |
1974 |
Irish Times Easter | C00 French Defense |