| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. R Cifuentes vs M Bernat |
| ½-½ | 18 | 1977 | Pan American Junior Championship | D63 Queen's Gambit Declined, Orthodox Defense |
| 27. M Bernat vs F Delgado |
| 1-0 | 31 | 1977 | Pan American Junior Championship | E10 Queen's Pawn Game |
| 28. D Rivera vs M Bernat |
| 0-1 | 29 | 1977 | Pan American Junior Championship | C03 French, Tarrasch |
| 29. L Ferrao vs M Bernat |
| 0-1 | 39 | 1977 | Pan American Junior Championship | C07 French, Tarrasch |
| 30. E Raaste vs M Bernat |
 | 0-1 | 33 | 1978 | Buenos Aires Olympiad | C00 French Defense |
| 31. J H Donner vs M Bernat |
 | 1-0 | 37 | 1978 | Buenos Aires Olympiad | A55 Old Indian, Main line |
| 32. M Bernat vs I Rogers |
| 1-0 | 66 | 1978 | Buenos Aires Olympiad | A04 Reti Opening |
| 33. M Bernat vs C Silva Sanchez |
| ½-½ | 47 | 1978 | Buenos Aires Olympiad | A14 English |
| 34. A Anelli vs M Bernat |
| ½-½ | 32 | 1979 | Banco de la Ciudad | E15 Queen's Indian |
| 35. M Bernat vs F Lida Garcia |
| 1-0 | 39 | 1979 | Banco de la Ciudad | A70 Benoni, Classical with 7.Nf3 |
| 36. M Bernat vs L Bronstein |
| ½-½ | 46 | 1979 | Banco de la Ciudad | A56 Benoni Defense |
| 37. R Farah vs M Bernat |
| 0-1 | 56 | 1979 | Banco de la Ciudad | C80 Ruy Lopez, Open |
| 38. M Bernat vs M Kummel |
| 1-0 | 25 | 1979 | Banco de la Ciudad | A93 Dutch, Stonewall, Botvinnik Variation |
| 39. G Puiggros vs M Bernat |
| 0-1 | 64 | 1979 | Banco de la Ciudad | A45 Queen's Pawn Game |
| 40. M Bernat vs H Abramson |
| 1-0 | 31 | 1979 | Banco de la Ciudad | D26 Queen's Gambit Accepted |
| 41. M Bernat vs Browne |
| 0-1 | 32 | 1979 | Buenos Aires (Konex) | E12 Queen's Indian |
| 42. J Szmetan vs M Bernat |
| 0-1 | 35 | 1979 | Buenos Aires (Konex) | A00 Uncommon Opening |
| 43. M Bernat vs Korchnoi |
| 0-1 | 41 | 1979 | Buenos Aires (Konex) | E12 Queen's Indian |
| 44. M Bernat vs Quinteros |
| 0-1 | 57 | 1979 | Buenos Aires (Konex) | A40 Queen's Pawn Game |
| 45. V Liberzon vs M Bernat |
| 1-0 | 48 | 1979 | Buenos Aires (Konex) | C03 French, Tarrasch |
| 46. M Bernat vs Najdorf |
| 0-1 | 45 | 1979 | Buenos Aires (Konex) | E92 King's Indian |
| 47. Miles vs M Bernat |
| 0-1 | 42 | 1979 | Buenos Aires (Konex) | A44 Old Benoni Defense |
| 48. M Bernat vs Ljubojevic |
| 0-1 | 32 | 1979 | Buenos Aires (Konex) | A70 Benoni, Classical with 7.Nf3 |
| 49. J Diez del Corral vs M Bernat |
| 1-0 | 48 | 1979 | Buenos Aires (Konex) | C18 French, Winawer |
| 50. M Bernat vs J Rubinetti |
| 0-1 | 38 | 1979 | Buenos Aires (Konex) | A04 Reti Opening |
Kibitzing
