| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. J Nun vs J Richter |
| 1-0 | 30 | 1968 | CSR-ch12 corr | B09 Pirc, Austrian Attack |
| 52. J Nun vs R Sevecek |
| 1-0 | 53 | 1968 | CSR-ch12 corr | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 53. J Nun vs J Slizek |
| 1-0 | 41 | 1968 | CSR-ch12 corr | E46 Nimzo-Indian |
| 54. J Nun vs V Sojka |
 | 1-0 | 15 | 1968 | CSR-ch12 corr | B23 Sicilian, Closed |
| 55. J Nun vs K Urbanec |
| 1-0 | 35 | 1968 | CSR-ch12 corr | D20 Queen's Gambit Accepted |
| 56. B Svancer vs J Nun |
| 0-1 | 45 | 1968 | CSR-ch12 corr | A34 English, Symmetrical |
| 57. E Vitasek vs J Nun |
| 1-0 | 40 | 1968 | CSR-ch12 corr | D34 Queen's Gambit Declined, Tarrasch |
| 58. M Weiner vs J Nun |
| 0-1 | 45 | 1968 | CSR-ch12 corr | C78 Ruy Lopez |
| 59. L Zinn vs J Nun |
| 0-1 | 28 | 1968 | corr | C57 Two Knights |
| 60. J Nun vs B Perfors |
| 0-1 | 30 | 1969 | NED-CSR corr | C71 Ruy Lopez |
| 61. Jansa vs J Nun |
| 0-1 | 28 | 1969 | CSR-chT | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 62. J Nun vs M Babula |
| 0-1 | 59 | 1971 | CSR sf-A | D42 Queen's Gambit Declined, Semi-Tarrasch, 7.Bd3 |
| 63. P Votruba vs J Nun |
| 0-1 | 20 | 1971 | CSR sf-A | C74 Ruy Lopez, Modern Steinitz Defense |
| 64. J Nun vs S Jezek |
| 1-0 | 26 | 1971 | CSR sf-A | D01 Richter-Veresov Attack |
| 65. M Vrabec vs J Nun |
| 0-1 | 40 | 1971 | CSR sf-A | C45 Scotch Game |
| 66. J Nun vs J Podgorny |
| 0-1 | 47 | 1971 | CSR sf-A | B02 Alekhine's Defense |
| 67. J Nun vs J Zapletal |
| 1-0 | 37 | 1971 | CSR sf-A | B00 Uncommon King's Pawn Opening |
| 68. Z Hlousek vs J Nun |
| ½-½ | 39 | 1971 | CSR sf-A | C73 Ruy Lopez, Modern Steinitz Defense |
| 69. J Nun vs J Kratochvil Sr |
| 1-0 | 36 | 1971 | CSR sf-A | B23 Sicilian, Closed |
| 70. W Phillip vs J Nun |
| 0-1 | 32 | 1971 | CSR sf-A | B25 Sicilian, Closed |
| 71. J Nun vs R Mesiarik |
| 1-0 | 28 | 1971 | CSR sf-A | C02 French, Advance |
| 72. C H Alexander vs J Nun |
| 1-0 | 23 | 1972 | World Team Correspondence Chess Final -1975 | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 73. J Nun vs Pettersson |
| 1-0 | 56 | 1973 | corr 1.EU tt | C44 King's Pawn Game |
| 74. Balbe vs J Nun |
| 1-0 | 32 | 1973 | corr 1.EU tt | C47 Four Knights |
| 75. Y Estrin vs J Nun |
| ½-½ | 48 | 1973 | corr | C57 Two Knights |
Kibitzing
