| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. B Djurasevic vs H Catozzi |
| 1-0 | 35 | 1956 | France - Yugoslavia | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 2. H Catozzi vs B Djurasevic |
| ½-½ | 21 | 1956 | France - Yugoslavia | E53 Nimzo-Indian, 4.e3 |
| 3. H Catozzi vs P Tumurbator |
| ½-½ | 58 | 1956 | Moscow Olympiad qual-2 | D63 Queen's Gambit Declined, Orthodox Defense |
| 4. J Enevoldsen vs H Catozzi |
| 0-1 | 49 | 1956 | Moscow Olympiad qual-2 | C96 Ruy Lopez, Closed |
| 5. H Catozzi vs S Smiltiner |
| 0-1 | 67 | 1956 | Moscow Olympiad qual-2 | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 6. Ian Middleton vs H Catozzi |
| ½-½ | 46 | 1956 | Moscow Olympiad qual-2 | E59 Nimzo-Indian, 4.e3, Main line |
| 7. A Prameshuber vs H Catozzi |
| ½-½ | 41 | 1956 | Moscow Olympiad qual-2 | C78 Ruy Lopez |
| 8. H Catozzi vs G Szapiro |
| 1-0 | 65 | 1956 | Moscow Olympiad Final-B | A49 King's Indian, Fianchetto without c4 |
| 9. G P Thibaut vs H Catozzi |
| ½-½ | 34 | 1956 | Moscow Olympiad Final-B | E16 Queen's Indian |
| 10. A Prameshuber vs H Catozzi |
| ½-½ | 19 | 1956 | Moscow Olympiad Final-B | E16 Queen's Indian |
| 11. H Catozzi vs J A Fred |
| ½-½ | 46 | 1956 | Moscow Olympiad Final-B | D15 Queen's Gambit Declined Slav |
| 12. J Larenas vs H Catozzi |
| ½-½ | 24 | 1956 | Moscow Olympiad Final-B | E16 Queen's Indian |
| 13. F Thorbergsson vs H Catozzi |
| 1-0 | 42 | 1956 | Moscow Olympiad Final-B | E59 Nimzo-Indian, 4.e3, Main line |
| 14. H Catozzi vs H Jimenez |
| 0-1 | 57 | 1956 | Moscow Olympiad Final-B | E67 King's Indian, Fianchetto |
| 15. H Catozzi vs M Joffe |
| 0-1 | 31 | 1956 | Moscow Olympiad Final-B | A46 Queen's Pawn Game |
| 16. H Catozzi vs C H Alexander |
| 0-1 | 33 | 1957 | Dublin Zonal | E60 King's Indian Defense |
| 17. E Walther vs H Catozzi |
| 1-0 | 47 | 1957 | Dublin Zonal | C77 Ruy Lopez |
| 18. A Dunkelblum vs H Catozzi |
| 1-0 | 58 | 1957 | Dublin Zonal | A15 English |
| 19. H Catozzi vs A Stenborg |
| ½-½ | 31 | 1957 | Dublin Zonal | E60 King's Indian Defense |
| 20. K Plater vs H Catozzi |
| 1-0 | 62 | 1957 | Dublin Zonal | C47 Four Knights |
| 21. K Dreyer vs H Catozzi |
| ½-½ | 20 | 1957 | Dublin Zonal | A47 Queen's Indian |
| 22. H Catozzi vs J Llado Lumbera |
| ½-½ | 60 | 1957 | Dublin Zonal | E60 King's Indian Defense |
| 23. T van Scheltinga vs H Catozzi |
| ½-½ | 42 | 1957 | Dublin Zonal | A34 English, Symmetrical |
| 24. A Conrady vs H Catozzi |
| 0-1 | 41 | 1957 | Dublin Zonal | C77 Ruy Lopez |
| 25. H Catozzi vs Benko |
| 1-0 | 59 | 1957 | Dublin Zonal | E63 King's Indian, Fianchetto, Panno Variation |
Kibitzing
