| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Suarez Davila vs A Olivera |
| 0-1 | 29 | 1939 | Buenos Aires Olympiad Final-B | E33 Nimzo-Indian, Classical |
| 27. A Olivera vs J Austbo |
  | 1-0 | 41 | 1939 | Buenos Aires Olympiad Final-B | D55 Queen's Gambit Declined |
| 28. E Karastoichev vs A Olivera |
| 0-1 | 22 | 1939 | Buenos Aires Olympiad Final-B | C16 French, Winawer |
| 29. A Olivera vs W Nash |
| 1-0 | 28 | 1939 | Buenos Aires Olympiad Final-B | D85 Grunfeld |
| 30. D Soto vs A Olivera |
| 1-0 | 56 | 1939 | Buenos Aires Olympiad Final-B | A46 Queen's Pawn Game |
| 31. Alekhine vs A Olivera |
| 1-0 | 34 | 1939 | Montevideo | E21 Nimzo-Indian, Three Knights |
| 32. A Olivera vs L Engels |
| ½-½ | 41 | 1941 | Montevideo | E36 Nimzo-Indian, Classical |
| 33. A Liebstein vs A Olivera |
| 1-0 | 27 | 1941 | Montevideo | D40 Queen's Gambit Declined, Semi-Tarrasch |
| 34. A Olivera vs M Luckis |
| 0-1 | 34 | 1941 | Montevideo | E32 Nimzo-Indian, Classical |
| 35. L Roux Cabral vs A Olivera |
| 0-1 | 36 | 1941 | Montevideo | A46 Queen's Pawn Game |
| 36. A Olivera vs Eliskases |
| 0-1 | 50 | 1941 | Montevideo | E32 Nimzo-Indian, Classical |
| 37. H Rossetto vs A Olivera |
| 1-0 | 62 | 1941 | Montevideo | C07 French, Tarrasch |
| 38. A Olivera vs J C Balparda |
| 1-0 | 27 | 1941 | Montevideo | A13 English |
| 39. A Olivera vs J Canepa |
| 1-0 | 63 | 1941 | Montevideo | A35 English, Symmetrical |
| 40. P Santos Isain vs A Olivera |
| 1-0 | 34 | 1941 | Montevideo | B12 Caro-Kann Defense |
| 41. A Olivera vs S Ledesma Iglesias |
| 0-1 | 38 | 1941 | Montevideo | C05 French, Tarrasch |
| 42. A Pons vs A Olivera |
| ½-½ | 23 | 1941 | Montevideo | C01 French, Exchange |
| 43. A Olivera vs M Czerniak |
| 0-1 | 30 | 1946 | ARG-URU radio m | E60 King's Indian Defense |
| 44. P Michel vs A Olivera |
| ½-½ | 33 | 1948 | Mar del Plata | B18 Caro-Kann, Classical |
| 45. A Olivera vs Stahlberg |
| 0-1 | 66 | 1948 | Mar del Plata | D22 Queen's Gambit Accepted |
| 46. A Olivera vs M E de Freitas |
| 1-0 | 38 | 1948 | Mar del Plata | E32 Nimzo-Indian, Classical |
| 47. A Olivera vs Denker |
| ½-½ | 51 | 1948 | Mar del Plata | D43 Queen's Gambit Declined Semi-Slav |
| 48. M Castillo vs A Olivera |
| 1-0 | 38 | 1948 | Mar del Plata | D30 Queen's Gambit Declined |
| 49. A Olivera vs C Guimard |
| 0-1 | 22 | 1948 | Mar del Plata | A84 Dutch |
| 50. H Rossetto vs A Olivera |
| 1-0 | 52 | 1948 | Mar del Plata | A13 English |
Kibitzing
