Game |
| Result | Moves |
Year | Event/Locale | Opening |
51. B De Greiff vs P Limbos |
| ½-½ | 27 | 1956 | Moscow Olympiad Final-B | E29 Nimzo-Indian, Samisch |
52. B De Greiff vs L Herrmann |
| 1-0 | 42 | 1956 | Moscow Olympiad Final-B | B20 Sicilian |
53. B Moller vs B De Greiff |
| 1-0 | 52 | 1956 | Moscow Olympiad Final-B | E99 King's Indian, Orthodox, Taimanov |
54. J Gutierrez vs B De Greiff |
| ½-½ | 61 | 1958 | Pan-American Championship | C64 Ruy Lopez, Classical |
55. B De Greiff vs A Cuellar Jimenez |
| 1-0 | 43 | 1958 | Pan-American Championship | C32 King's Gambit Declined, Falkbeer Counter Gambit |
56. W Ader Hausman vs B De Greiff |
| ½-½ | 22 | 1958 | Pan-American Championship | E14 Queen's Indian |
57. B De Greiff vs Lombardy |
| ½-½ | 27 | 1958 | Pan-American Championship | E95 King's Indian, Orthodox, 7...Nbd7, 8.Re1 |
58. F Sanchez Betancourt vs B De Greiff |
| 0-1 | 48 | 1958 | Pan-American Championship | E39 Nimzo-Indian, Classical, Pirc Variation |
59. B De Greiff vs A Medina Garcia |
| 0-1 | 56 | 1958 | Pan-American Championship | D35 Queen's Gambit Declined |
60. M Cuellar Gacharna vs B De Greiff |
| 1-0 | 48 | 1958 | Pan-American Championship | E40 Nimzo-Indian, 4.e3 |
61. J Perez vs B De Greiff |
| ½-½ | 47 | 1958 | Pan-American Championship | B92 Sicilian, Najdorf, Opocensky Variation |
62. B De Greiff vs E Davila |
| 1-0 | 30 | 1958 | Pan-American Championship | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
63. C Humerez Estrada vs B De Greiff |
| ½-½ | 50 | 1958 | Pan-American Championship | B28 Sicilian, O'Kelly Variation |
64. B De Greiff vs Panno |
| 0-1 | 41 | 1958 | Pan-American Championship | B99 Sicilian, Najdorf, 7...Be7 Main line |
65. Najdorf vs B De Greiff |
| 1-0 | 51 | 1958 | Pan-American Championship | B64 Sicilian, Richter-Rauzer Attack |
66. B De Greiff vs F Munoz |
| 0-1 | 69 | 1958 | Pan-American Championship | B90 Sicilian, Najdorf |
67. A Bisguier vs B De Greiff |
| ½-½ | 36 | 1958 | Pan-American Championship | E31 Nimzo-Indian, Leningrad, Main line |
68. Tal vs B De Greiff |
  | 1-0 | 29 | 1958 | Portoroz Interzonal | A17 English |
69. B De Greiff vs Petrosian |
| ½-½ | 30 | 1958 | Portoroz Interzonal | E93 King's Indian, Petrosian System |
70. J Sherwin vs B De Greiff |
| 1-0 | 49 | 1958 | Portoroz Interzonal | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
71. B De Greiff vs Szabo |
| 0-1 | 39 | 1958 | Portoroz Interzonal | E39 Nimzo-Indian, Classical, Pirc Variation |
72. Pachman vs B De Greiff |
| 1-0 | 42 | 1958 | Portoroz Interzonal | A16 English |
73. B De Greiff vs A Matanovic |
| ½-½ | 24 | 1958 | Portoroz Interzonal | B64 Sicilian, Richter-Rauzer Attack |
74. Filip vs B De Greiff |
| 1-0 | 41 | 1958 | Portoroz Interzonal | A10 English |
75. B De Greiff vs R Cardoso |
 | 0-1 | 31 | 1958 | Portoroz Interzonal | B93 Sicilian, Najdorf, 6.f4 |