| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. R Mascarinas vs T Shaw |
| ½-½ | 65 | 1975 | Asian Masters | C90 Ruy Lopez, Closed |
| 2. R Mascarinas vs K Harandi |
 | 1-0 | 41 | 1976 | Asian Masters Tournament | A32 English, Symmetrical Variation |
| 3. M Choo vs R Mascarinas |
| 0-1 | 34 | 1976 | Asian Masters Tournament | A04 Reti Opening |
| 4. P H Mikkelsen vs R Mascarinas |
| 0-1 | 36 | 1976 | Haifa Olympiad | B83 Sicilian |
| 5. J Kolbak vs R Mascarinas |
| ½-½ | 89 | 1976 | Haifa Olympiad | B21 Sicilian, 2.f4 and 2.d4 |
| 6. O Hjertenes vs R Mascarinas |
| ½-½ | 17 | 1976 | Haifa Olympiad | B40 Sicilian |
| 7. D Mohrlok vs R Mascarinas |
| ½-½ | 60 | 1976 | Haifa Olympiad | A15 English |
| 8. R Mascarinas vs J Mestel |
| 0-1 | 40 | 1976 | Haifa Olympiad | A40 Queen's Pawn Game |
| 9. M Solmundarson vs R Mascarinas |
| 0-1 | 34 | 1976 | Haifa Olympiad | A16 English |
| 10. R Mascarinas vs A Bogda |
| ½-½ | 33 | 1976 | Haifa Olympiad | A04 Reti Opening |
| 11. R Mascarinas vs T Shaw |
| ½-½ | 44 | 1976 | Haifa Olympiad | D15 Queen's Gambit Declined Slav |
| 12. D Diano vs R Mascarinas |
| 0-1 | 30 | 1976 | Haifa Olympiad | A03 Bird's Opening |
| 13. E Torre vs R Mascarinas |
| ½-½ | 11 | 1977 | Rubinstein Memorial | C42 Petrov Defense |
| 14. G Kuzmin vs R Mascarinas |
| 1-0 | 42 | 1977 | Rubinstein Memorial | C09 French, Tarrasch, Open Variation, Main line |
| 15. Quinteros vs R Mascarinas |
| 1-0 | 38 | 1977 | Rubinstein Memorial | A04 Reti Opening |
| 16. R Mascarinas vs G Lebredo Zaragoitia |
| ½-½ | 38 | 1977 | Rubinstein Memorial | C07 French, Tarrasch |
| 17. A Filipowicz vs R Mascarinas |
| ½-½ | 22 | 1977 | Rubinstein Memorial | B56 Sicilian |
| 18. L Vogt vs R Mascarinas |
| 1-0 | 53 | 1977 | Rubinstein Memorial | B60 Sicilian, Richter-Rauzer |
| 19. J Adamski vs R Mascarinas |
| 0-1 | 40 | 1977 | Rubinstein Memorial | A15 English |
| 20. R Mascarinas vs L Espig |
| ½-½ | 69 | 1977 | Rubinstein Memorial | B40 Sicilian |
| 21. R Mascarinas vs I Farago |
| ½-½ | 61 | 1977 | Rubinstein Memorial | E09 Catalan, Closed |
| 22. R Mascarinas vs M Diesen |
| ½-½ | 12 | 1977 | Rubinstein Memorial | B22 Sicilian, Alapin |
| 23. R Mascarinas vs Ivkov |
| 1-0 | 34 | 1977 | Rubinstein Memorial | A13 English |
| 24. Hort vs R Mascarinas |
| 1-0 | 24 | 1977 | Rubinstein Memorial | C11 French |
| 25. Gulko vs R Mascarinas |
| 1-0 | 35 | 1977 | Rubinstein Memorial | B83 Sicilian |
Kibitzing
