| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. R T Cardoso vs J Penrose |
 | 0-1 | 42 |
1958 |
Olympiad | A42 Modern Defense, Averbakh System |
| 27. Sliwa vs R T Cardoso |
| 1-0 | 48 |
1958 |
Munich ol (Men) prel | D37 Queen's Gambit Declined |
| 28. R T Cardoso vs J Durao |
| ½-½ | 41 |
1958 |
13th olm final C | D44 Queen's Gambit Declined Semi-Slav |
| 29. R Sanguineti vs R T Cardoso |
| ½-½ | 69 |
1958 |
Portoroz izt | C97 Ruy Lopez, Closed, Chigorin |
| 30. Pilnik vs R T Cardoso |
| ½-½ | 41 |
1958 |
13th olm qual. group 3 | B06 Robatsch |
| 31. R T Cardoso vs G Fuster |
| 1-0 | 41 |
1958 |
Portoroz izt | D22 Queen's Gambit Accepted |
| 32. Y Safvat vs R T Cardoso |
| 0-1 | 43 |
1958 |
13th olm final C | A10 English |
| 33. Fischer vs R T Cardoso |
| 1-0 | 62 |
1958 |
Bad Portoroz izt | B10 Caro-Kann |
| 34. B P Reilly vs R T Cardoso |
| 0-1 | 47 |
1958 |
13th olm final C | D12 Queen's Gambit Declined Slav |
| 35. B De Greiff vs R T Cardoso |
| 0-1 | 31 |
1958 |
Portoroz izt | B93 Sicilian, Najdorf, 6.f4 |
| 36. Pachman vs R T Cardoso |
| 1-0 | 41 |
1958 |
Izt | D38 Queen's Gambit Declined, Ragozin Variation |
| 37. W Fairhurst vs R T Cardoso |
| 0-1 | 39 |
1958 |
13th olm final C | D53 Queen's Gambit Declined |
| 38. R T Cardoso vs Larsen |
| ½-½ | 54 |
1958 |
Portoroz izt | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 39. R T Cardoso vs Szabo |
| 0-1 | 42 |
1958 |
13th olm qual. group 3 | B27 Sicilian |
| 40. O Neikirch vs R T Cardoso |
| 1-0 | 46 |
1958 |
Portoroz izt | E91 King's Indian |
| 41. R T Cardoso vs K Lagha |
| 1-0 | 29 |
1958 |
13th olm final C | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 42. R T Cardoso vs A Aggos |
| 1-0 | 30 |
1958 |
13th olm final C | D55 Queen's Gambit Declined |
| 43. R T Cardoso vs J Sherwin |
| 1-0 | 41 |
1958 |
Portoroz izt | D85 Grunfeld |
| 44. R T Cardoso vs Bronstein |
| 1-0 | 42 |
1958 |
Izt | B06 Robatsch |
| 45. R T Cardoso vs Tal |
| ½-½ | 44 |
1958 |
Portoroz izt | B36 Sicilian, Accelerated Fianchetto |
| 46. R T Cardoso vs W Heidenfeld |
| ½-½ | 52 |
1958 |
13th olm final C | A52 Budapest Gambit |
| 47. Averbakh vs R T Cardoso |
| ½-½ | 60 |
1958 |
Portoroz izt | A34 English, Symmetrical |
| 48. R T Cardoso vs M Cuellar-Gacharna |
| 1-0 | 73 |
1958 |
13th olm qual. group 3 | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 49. R T Cardoso vs Gligoric |
| 0-1 | 42 |
1958 |
Portoroz izt | B43 Sicilian, Kan, 5.Nc3 |
| 50. R T Cardoso vs O Sarapu |
| 1-0 | 55 |
1967 |
74th New Zealand Championship | B56 Sicilian |
