| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. J Canepa vs O Trompowsky |
 | 1-0 | 39 | 1938 | Montevideo | B74 Sicilian, Dragon, Classical |
| 52. O Trompowsky vs A da Silva Rocha |
| ½-½ | 21 | 1938 | Montevideo | D53 Queen's Gambit Declined |
| 53. Alekhine vs O Trompowsky |
 | 1-0 | 38 | 1938 | Montevideo | E01 Catalan, Closed |
| 54. O Trompowsky vs E Rotunno |
| 0-1 | 30 | 1938 | Montevideo | A45 Queen's Pawn Game |
| 55. O Trompowsky vs Letelier |
| ½-½ | 24 | 1938 | Montevideo | D50 Queen's Gambit Declined |
| 56. O Trompowsky vs W O Cruz |
| 0-1 | 41 | 1939 | BRA-ch9 m | C17 French, Winawer, Advance |
| 57. O Trompowsky vs W O Cruz |
| 1-0 | 37 | 1939 | BRA-ch9 m | A40 Queen's Pawn Game |
| 58. O Trompowsky vs W O Cruz |
| 1-0 | 39 | 1939 | BRA-ch9 m | A40 Queen's Pawn Game |
| 59. O Trompowsky vs W O Cruz |
| 0-1 | 34 | 1939 | BRA-ch9 m | A45 Queen's Pawn Game |
| 60. W O Cruz vs O Trompowsky |
| 0-1 | 40 | 1939 | BRA-ch9 m | D51 Queen's Gambit Declined |
| 61. W O Cruz vs O Trompowsky |
| 0-1 | 40 | 1939 | BRA-ch9 m | A53 Old Indian |
| 62. W O Cruz vs O Trompowsky |
| 0-1 | 20 | 1939 | BRA-ch9 m | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 63. W O Cruz vs O Trompowsky |
| ½-½ | 44 | 1939 | BRA-ch9 m | A07 King's Indian Attack |
| 64. Alekhine vs O Trompowsky |
| ½-½ | 38 | 1939 | Alekhine Clock simul, 12b Rio de Janeiro | E10 Queen's Pawn Game |
| 65. Tartakower vs O Trompowsky |
| 1-0 | 31 | 1939 | Buenos Aires Olympiad qual-1 | E21 Nimzo-Indian, Three Knights |
| 66. O Trompowsky vs K Opocensky |
| 0-1 | 49 | 1939 | Buenos Aires Olympiad qual-1 | D33 Queen's Gambit Declined, Tarrasch |
| 67. J S Diaz Perez vs O Trompowsky |
| 0-1 | 35 | 1939 | Buenos Aires Olympiad qual-1 | B72 Sicilian, Dragon |
| 68. A Ismodes Dulanto vs O Trompowsky |
| ½-½ | 45 | 1939 | Buenos Aires Olympiad qual-1 | B72 Sicilian, Dragon |
| 69. O Trompowsky vs C H Alexander |
| ½-½ | 41 | 1939 | Buenos Aires Olympiad qual-1 | A45 Queen's Pawn Game |
| 70. O Trompowsky vs Tartakower |
| ½-½ | 55 | 1939 | Buenos Aires Olympiad Final-A | A92 Dutch |
| 71. L Piazzini vs O Trompowsky |
| 1-0 | 53 | 1939 | Buenos Aires Olympiad Final-A | C49 Four Knights |
| 72. O Trompowsky vs M Castillo |
| 0-1 | 55 | 1939 | Buenos Aires Olympiad Final-A | A45 Queen's Pawn Game |
| 73. Eliskases vs O Trompowsky |
| 1-0 | 51 | 1939 | Buenos Aires Olympiad Final-A | A04 Reti Opening |
| 74. Petrov vs O Trompowsky |
| 1-0 | 29 | 1939 | Buenos Aires Olympiad Final-A | E01 Catalan, Closed |
| 75. O Trompowsky vs Stahlberg |
| ½-½ | 40 | 1939 | Buenos Aires Olympiad Final-A | D00 Queen's Pawn Game |
Kibitzing
