| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. Gligoric vs M Rivas Pastor |
| 1-0 | 50 | 1978 | Torneo del Vino | D25 Queen's Gambit Accepted |
| 27. Miles vs M Rivas Pastor |
| 1-0 | 65 | 1978 | Torneo del Vino | D20 Queen's Gambit Accepted |
| 28. M Rivas Pastor vs V Ciocaltea |
| ½-½ | 30 | 1978 | Torneo del Vino | B06 Robatsch |
| 29. Hort vs M Rivas Pastor |
 | 1-0 | 37 | 1978 | Torneo del Vino | D23 Queen's Gambit Accepted |
| 30. M Rivas Pastor vs J Bellon Lopez |
| 0-1 | 34 | 1978 | Torneo del Vino | B13 Caro-Kann, Exchange |
| 31. F Sanz Alonso vs M Rivas Pastor |
| ½-½ | 19 | 1978 | Torneo del Vino | B00 Uncommon King's Pawn Opening |
| 32. M Rivas Pastor vs F Visier Segovia |
| ½-½ | 42 | 1978 | Torneo del Vino | B40 Sicilian |
| 33. M Rivas Pastor vs Spassky |
| ½-½ | 15 | 1978 | Torneo del Vino | A37 English, Symmetrical |
| 34. L Haritver vs M Rivas Pastor |
| 0-1 | 23 | 1978 | Torneo del Vino | B43 Sicilian, Kan, 5.Nc3 |
| 35. Emilio Cruz Lorenzana vs M Rivas Pastor |
| 0-1 | 27 | 1978 | Buenos Aires Olympiad | D25 Queen's Gambit Accepted |
| 36. M Rivas Pastor vs V Inkiov |
| ½-½ | 74 | 1978 | Buenos Aires Olympiad | B50 Sicilian |
| 37. M Rivas Pastor vs J Letzelter |
| 0-1 | 28 | 1978 | Buenos Aires Olympiad | A13 English |
| 38. M Rivas Pastor vs Suba |
| ½-½ | 77 | 1978 | Buenos Aires Olympiad | B80 Sicilian, Scheveningen |
| 39. M Rivas Pastor vs T Wedberg |
| 1-0 | 41 | 1978 | Buenos Aires Olympiad | C50 Giuoco Piano |
| 40. Speelman vs M Rivas Pastor |
| ½-½ | 23 | 1978 | Amsterdam Zonal | B28 Sicilian, O'Kelly Variation |
| 41. M Rivas Pastor vs J Feller |
| 1-0 | 64 | 1978 | Amsterdam Zonal | B29 Sicilian, Nimzovich-Rubinstein |
| 42. Sosonko vs M Rivas Pastor |
| 0-1 | 57 | 1978 | Amsterdam Zonal | D24 Queen's Gambit Accepted |
| 43. M Rivas Pastor vs L Roos |
| ½-½ | 41 | 1978 | Amsterdam Zonal | A07 King's Indian Attack |
| 44. E Keogh vs M Rivas Pastor |
| ½-½ | 38 | 1978 | Amsterdam Zonal | B21 Sicilian, 2.f4 and 2.d4 |
| 45. M Rivas Pastor vs M Stean |
| 0-1 | 34 | 1978 | Amsterdam Zonal | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 46. G Ligterink vs M Rivas Pastor |
| 1-0 | 41 | 1978 | Amsterdam Zonal | B04 Alekhine's Defense, Modern |
| 47. M Rivas Pastor vs F Sanz Alonso |
| ½-½ | 24 | 1978 | Amsterdam Zonal | C49 Four Knights |
| 48. Miles vs M Rivas Pastor |
| 1-0 | 37 | 1978 | Amsterdam Zonal | E12 Queen's Indian |
| 49. M Rivas Pastor vs J Bellon Lopez |
| 0-1 | 47 | 1978 | Amsterdam Zonal | D00 Queen's Pawn Game |
| 50. K Langeweg vs M Rivas Pastor |
| 1-0 | 40 | 1978 | Amsterdam Zonal | A28 English |
Kibitzing
