| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. N Minev vs N Iordanov |
| ½-½ | 23 | 1962 | Bulgarian Championship | B14 Caro-Kann, Panov-Botvinnik Attack |
| 52. N Iordanov vs O Neikirch |
| 1-0 | 25 | 1962 | Bulgarian Championship | D31 Queen's Gambit Declined |
| 53. E Karastoichev vs N Iordanov |
| 0-1 | 34 | 1962 | Bulgarian Championship | B28 Sicilian, O'Kelly Variation |
| 54. I A Zaitsev vs N Iordanov |
| ½-½ | 39 | 1970 | Albena | A67 Benoni, Taimanov Variation |
| 55. Suetin vs N Iordanov |
| ½-½ | 20 | 1970 | Albena | B32 Sicilian |
| 56. Hort vs N Iordanov |
| 1-0 | 37 | 1971 | Havirov | D31 Queen's Gambit Declined |
| 57. N Minev vs N Iordanov |
 | 1-0 | 15 | 1971 | Bulgarian Championship | A56 Benoni Defense |
| 58. N Iordanov vs N Kirov |
| 0-1 | 59 | 1971 | Bulgarian Championship | A07 King's Indian Attack |
| 59. S Bohosjan vs N Iordanov |
| 0-1 | 44 | 1971 | Bulgarian Championship | B23 Sicilian, Closed |
| 60. N Iordanov vs D Pelitov |
| 1-0 | 37 | 1971 | Bulgarian Championship | E69 King's Indian, Fianchetto, Classical Main line |
| 61. P Velikov vs N Iordanov |
| 0-1 | 55 | 1971 | Bulgarian Championship | B23 Sicilian, Closed |
| 62. N Iordanov vs Z Kerchev |
| ½-½ | 11 | 1971 | Bulgarian Championship | E11 Bogo-Indian Defense |
| 63. K Angelov vs N Iordanov |
| 0-1 | 59 | 1971 | Bulgarian Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 64. N Iordanov vs P Orev |
| 1-0 | 52 | 1971 | Bulgarian Championship | A58 Benko Gambit |
| 65. I Radulov vs N Iordanov |
| 1-0 | 28 | 1971 | Bulgarian Championship | A36 English |
| 66. N Iordanov vs P Peev |
| 0-1 | 37 | 1971 | Bulgarian Championship | A58 Benko Gambit |
| 67. N Iordanov vs L Spassov |
| ½-½ | 15 | 1971 | Bulgarian Championship | C01 French, Exchange |
| 68. L Popov vs N Iordanov |
| 1-0 | 40 | 1971 | Bulgarian Championship | A80 Dutch |
| 69. N Iordanov vs N Spiridonov |
| ½-½ | 13 | 1971 | Bulgarian Championship | A05 Reti Opening |
| 70. P Arnaudov vs N Iordanov |
| 0-1 | 42 | 1971 | Bulgarian Championship | A25 English |
| 71. N Iordanov vs E Ermenkov |
| 0-1 | 36 | 1971 | Bulgarian Championship | A42 Modern Defense, Averbakh System |
| 72. P Kozarov vs N Iordanov |
| ½-½ | 17 | 1971 | Bulgarian Championship | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 73. N Iordanov vs J Ajanski |
| 0-1 | 46 | 1971 | Bulgarian Championship | E59 Nimzo-Indian, 4.e3, Main line |
| 74. L Pipkov vs N Iordanov |
| 0-1 | 27 | 1971 | Bulgarian Championship | E82 King's Indian, Samisch, double Fianchetto Variation |
| 75. N Iordanov vs K Tomov |
| 1-0 | 31 | 1971 | Bulgarian Championship | A44 Old Benoni Defense |
Kibitzing
