| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Adamski vs R Mascarinas |
| 0-1 | 40 | 1977 | Rubinstein Memorial | A15 English |
| 27. E Torre vs R Mascarinas |
| ½-½ | 11 | 1977 | Rubinstein Memorial | C42 Petrov Defense |
| 28. R Mascarinas vs I Farago |
| ½-½ | 61 | 1977 | Rubinstein Memorial | E09 Catalan, Closed |
| 29. T Shaw vs R Mascarinas |
| 1-0 | 80 | 1977 | Marlboro Chess Classic | A07 King's Indian Attack |
| 30. R Mascarinas vs R Naranja |
| ½-½ | 41 | 1977 | Marlboro Chess Classic | B40 Sicilian |
| 31. M Sharif vs R Mascarinas |
| 1-0 | 43 | 1977 | Marlboro Chess Classic | B89 Sicilian |
| 32. R Mascarinas vs R Balinas |
| 0-1 | 61 | 1977 | Marlboro Chess Classic | C62 Ruy Lopez, Old Steinitz Defense |
| 33. R Cardoso vs R Mascarinas |
| 1-0 | 69 | 1977 | Marlboro Chess Classic | B83 Sicilian |
| 34. R Mascarinas vs J Tarjan |
| 0-1 | 49 | 1977 | Marlboro Chess Classic | B53 Sicilian |
| 35. B Kouatly vs R Mascarinas |
| 0-1 | 23 | 1977 | Marlboro Chess Classic | E30 Nimzo-Indian, Leningrad |
| 36. R Mascarinas vs A Bachtiar |
 | ½-½ | 66 | 1977 | Marlboro Chess Classic | A13 English |
| 37. R Mascarinas vs K Harandi |
| ½-½ | 22 | 1977 | Marlboro Chess Classic | A14 English |
| 38. E Torre vs R Mascarinas |
| 1-0 | 27 | 1977 | Marlboro Chess Classic | B62 Sicilian, Richter-Rauzer |
| 39. R Mascarinas vs H Ardiansyah |
| 1-0 | 57 | 1977 | Marlboro Chess Classic | A04 Reti Opening |
| 40. Chandler vs R Mascarinas |
| 0-1 | 52 | 1977 | Marlboro Chess Classic | B32 Sicilian |
| 41. R Mascarinas vs J Sampouw |
| 0-1 | 28 | 1977 | Marlboro Chess Classic | D79 Neo-Grunfeld, 6.O-O, Main line |
| 42. M Aaron vs R Mascarinas |
| 0-1 | 34 | 1977 | Asian Team Championship | B89 Sicilian |
| 43. Chandler vs R Mascarinas |
| ½-½ | 66 | 1977 | Asian Team Championship | B82 Sicilian, Scheveningen |
| 44. R Mascarinas vs P C Dozsa |
| 1-0 | 31 | 1977 | Asian Team Championship | B89 Sicilian |
| 45. H Ardiansyah vs R Mascarinas |
| 1-0 | 38 | 1977 | Asian Team Championship | B58 Sicilian |
| 46. Ee Ley Hoon vs R Mascarinas |
| 0-1 | 25 | 1977 | Asian Team Championship | B56 Sicilian |
| 47. R Mascarinas vs M Kavakul |
| 1-0 | 16 | 1977 | Asian Team Championship | C84 Ruy Lopez, Closed |
| 48. L M Choong vs R Mascarinas |
| 0-1 | 28 | 1977 | Asian Team Championship | C43 Petrov, Modern Attack |
| 49. A Pope vs R Mascarinas |
| ½-½ | 26 | 1977 | Asian Team Championship | B88 Sicilian, Fischer-Sozin Attack |
| 50. M Sharif vs R Mascarinas |
| ½-½ | 14 | 1978 | Wellington | A07 King's Indian Attack |
Kibitzing
