| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. R Filguth vs A Mascarenhas |
| 1-0 | 66 | 1978 | Rio de Janeiro Old Spice | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 2. A Mascarenhas vs J Barros |
| 1-0 | 29 | 1978 | Rio de Janeiro Old Spice | A30 English, Symmetrical |
| 3. J Pimenta vs A Mascarenhas |
| ½-½ | 45 | 1978 | Rio de Janeiro Old Spice | A56 Benoni Defense |
| 4. R Gaui vs A Mascarenhas |
| ½-½ | 47 | 1978 | Rio de Janeiro Old Spice | B06 Robatsch |
| 5. A Mascarenhas vs H A Machado Jr |
| 0-1 | 32 | 1978 | Rio de Janeiro Old Spice | A13 English |
| 6. P P Queiroz vs A Mascarenhas |
| ½-½ | 10 | 1978 | Rio de Janeiro Old Spice | C83 Ruy Lopez, Open |
| 7. M Miranda vs A Mascarenhas |
| ½-½ | 20 | 1980 | Brazilian Championship | A04 Reti Opening |
| 8. A Mascarenhas vs S Cunha Pereira |
| ½-½ | 26 | 1980 | Brazilian Championship | A69 Benoni, Four Pawns Attack, Main line |
| 9. D van Riemsdijk vs A Mascarenhas |
| 1-0 | 48 | 1980 | Brazilian Championship | C77 Ruy Lopez |
| 10. H van Riemsdijk vs A Mascarenhas |
| 1-0 | 23 | 1980 | Brazilian Championship | B43 Sicilian, Kan, 5.Nc3 |
| 11. A Mascarenhas vs J S Bezerra de Lucena |
| 1-0 | 38 | 1980 | Brazilian Championship | A22 English |
| 12. H A Machado Jr vs A Mascarenhas |
| ½-½ | 43 | 1980 | Brazilian Championship | C07 French, Tarrasch |
| 13. A Mascarenhas vs M A Asfora |
| ½-½ | 50 | 1980 | Brazilian Championship | A45 Queen's Pawn Game |
| 14. F Trois vs A Mascarenhas |
| 1-0 | 26 | 1985 | Brazilian Championship | A46 Queen's Pawn Game |
| 15. H Camara vs A Mascarenhas |
| 1-0 | 52 | 1985 | Brazilian Championship | B40 Sicilian |
| 16. A A Correa vs A Mascarenhas |
| 1-0 | 23 | 1985 | Brazilian Championship | A20 English |
| 17. C Refkalefsky vs A Mascarenhas |
| 0-1 | 21 | 1985 | Brazilian Championship | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 18. J P Campos vs A Mascarenhas |
| 0-1 | 35 | 1985 | Brazilian Championship | D18 Queen's Gambit Declined Slav, Dutch |
| 19. A Mascarenhas vs J Chaves |
| 1-0 | 38 | 1985 | Brazilian Championship | A10 English |
| 20. A Mascarenhas vs F Vasconcellos |
| ½-½ | 47 | 1985 | Brazilian Championship | E92 King's Indian |
| 21. A Mascarenhas vs A C Rocha |
| ½-½ | 21 | 1985 | Brazilian Championship | B90 Sicilian, Najdorf |
| 22. A Mascarenhas vs R Teixeira |
| ½-½ | 11 | 1985 | Brazilian Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 23. L Tavares da Silva vs A Mascarenhas |
| 0-1 | 23 | 1985 | Brazilian Championship | A07 King's Indian Attack |
| 24. A Mascarenhas vs J F de Magalhaes Netto |
| 1-0 | 28 | 1985 | Brazilian Championship | A18 English, Mikenas-Carls |
| 25. A Mascarenhas vs J Sunye Neto |
| 0-1 | 40 | 1985 | Rio de Janeiro | A07 King's Indian Attack |
Kibitzing
