| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. L Loureiro vs H A Machado Jr |
| ½-½ | 15 | 1986 | Brazilian Championship | A28 English |
| 52. H A Machado Jr vs M Miranda |
| 1-0 | 50 | 1986 | Brazilian Championship | B82 Sicilian, Scheveningen |
| 53. W Martins Madeira vs H A Machado Jr |
| 0-1 | 61 | 1986 | Brazilian Championship | C44 King's Pawn Game |
| 54. H A Machado Jr vs C Soares |
| 1-0 | 36 | 1986 | Brazilian Championship | B98 Sicilian, Najdorf |
| 55. H A Machado Jr vs J Mann de Toledo |
| ½-½ | 41 | 1988 | Brazilian Championship | C67 Ruy Lopez |
| 56. H A Machado Jr vs E Tsuboi |
| 0-1 | 27 | 1988 | Brazilian Championship | D86 Grunfeld, Exchange |
| 57. H A Machado Jr vs A Resende |
  | 1-0 | 29 | 1988 | Brazilian Championship | B08 Pirc, Classical |
| 58. E Matsuura vs H A Machado Jr |
| 1-0 | 41 | 1988 | Brazilian Championship | C45 Scotch Game |
| 59. H A Machado Jr vs A de Castro |
| 1-0 | 40 | 1988 | Brazilian Championship | B49 Sicilian, Taimanov Variation |
| 60. D Lima vs H A Machado Jr |
| ½-½ | 26 | 1988 | Brazilian Championship | A49 King's Indian, Fianchetto without c4 |
| 61. H A Machado Jr vs F Cavalcanti |
| 1-0 | 24 | 1988 | BRA-ch+ | C02 French, Advance |
| 62. V Chemin vs H A Machado Jr |
| 0-1 | 45 | 1988 | Brazilian Championship | A04 Reti Opening |
| 63. H A Machado Jr vs R Teixeira |
| ½-½ | 11 | 1988 | Brazilian Championship | D50 Queen's Gambit Declined |
| 64. H van Riemsdijk vs H A Machado Jr |
| ½-½ | 60 | 1988 | Brazilian Championship | B33 Sicilian |
| 65. A C Rocha vs H A Machado Jr |
| 1-0 | 64 | 1988 | Brazilian Championship | C63 Ruy Lopez, Schliemann Defense |
| 66. H A Machado Jr vs A S Segal |
| ½-½ | 11 | 1988 | Brazilian Championship | D60 Queen's Gambit Declined, Orthodox Defense |
| 67. C Braga vs H A Machado Jr |
| ½-½ | 11 | 1988 | Brazilian Championship | B08 Pirc, Classical |
| 68. Kudrin vs H A Machado Jr |
| 1-0 | 29 | 1988 | Thessaloniki Olympiad | C42 Petrov Defense |
| 69. H A Machado Jr vs M Lim |
| 0-1 | 53 | 1988 | Thessaloniki Olympiad | B15 Caro-Kann |
| 70. A I Mubarak vs H A Machado Jr |
| 0-1 | 42 | 1988 | Thessaloniki Olympiad | A40 Queen's Pawn Game |
| 71. G West vs H A Machado Jr |
| ½-½ | 62 | 1988 | Thessaloniki Olympiad | A45 Queen's Pawn Game |
| 72. H A Machado Jr vs A Gamboa Gonzalez |
| 1-0 | 73 | 1988 | Thessaloniki Olympiad | B04 Alekhine's Defense, Modern |
| 73. H A Machado Jr vs E Tsuboi |
| 0-1 | 58 | 1989 | Brazilian Championship | D80 Grunfeld |
| 74. H van Riemsdijk vs H A Machado Jr |
| 1-0 | 30 | 1989 | Brazilian Championship | C43 Petrov, Modern Attack |
| 75. M Guimaraes de Souza vs H A Machado Jr |
| 0-1 | 42 | 1989 | Brazilian Championship | B00 Uncommon King's Pawn Opening |
Kibitzing
