| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 76. M Heintze vs A Wagner-Michel |
| 0-1 | 65 | 1973 | East German Championship (Women) | C97 Ruy Lopez, Closed, Chigorin |
| 77. M Heintze vs E Kowalska |
| ½-½ | 22 | 1973 | Halle (Women) | B09 Pirc, Austrian Attack |
| 78. C Lehmann vs M Heintze |
| ½-½ | 19 | 1973 | Halle (Women) | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 79. M Heintze vs K Eretova |
| 0-1 | 25 | 1973 | Halle (Women) | C45 Scotch Game |
| 80. B Burchardt vs M Heintze |
| 1-0 | 41 | 1973 | Halle (Women) | C80 Ruy Lopez, Open |
| 81. M Heintze vs L Nestorova |
| ½-½ | 29 | 1973 | Halle (Women) | B09 Pirc, Austrian Attack |
| 82. I Boettcher vs M Heintze |
| ½-½ | 45 | 1973 | Halle (Women) | E52 Nimzo-Indian, 4.e3, Main line with ...b6 |
| 83. M Heintze vs G Just |
| 0-1 | 29 | 1973 | Halle (Women) | A07 King's Indian Attack |
| 84. T Kakhabrishvili vs M Heintze |
| 1-0 | 47 | 1973 | Halle (Women) | A36 English |
| 85. M Heintze vs I Winter |
| ½-½ | 43 | 1973 | Halle (Women) | C77 Ruy Lopez |
| 86. L Honfi-Gurszky vs M Heintze |
| 1-0 | 45 | 1973 | Halle (Women) | A46 Queen's Pawn Game |
| 87. M Heintze vs M Juncu |
| ½-½ | 18 | 1973 | Halle (Women) | A07 King's Indian Attack |
| 88. G Espig vs M Heintze |
| ½-½ | 38 | 1974 | East German Championship (Women) | E14 Queen's Indian |
| 89. M Heintze vs I Roensch |
| ½-½ | 22 | 1974 | East German Championship (Women) | B17 Caro-Kann, Steinitz Variation |
| 90. P Feustel vs M Heintze |
| ½-½ | 52 | 1974 | East German Championship (Women) | C81 Ruy Lopez, Open, Howell Attack |
| 91. M Heintze vs J Scholz |
| 1-0 | 39 | 1974 | East German Championship (Women) | B06 Robatsch |
| 92. J Hartlapp vs M Heintze |
| 0-1 | 52 | 1974 | East German Championship (Women) | B06 Robatsch |
| 93. M Heintze vs I Boettcher |
| ½-½ | 21 | 1974 | East German Championship (Women) | D02 Queen's Pawn Game |
| 94. E Nuenchert vs M Heintze |
| ½-½ | 18 | 1974 | East German Championship (Women) | C90 Ruy Lopez, Closed |
| 95. M Heintze vs I Winter |
| ½-½ | 41 | 1974 | East German Championship (Women) | B23 Sicilian, Closed |
| 96. A Wagner-Michel vs M Heintze |
| 1-0 | 29 | 1974 | East German Championship (Women) | C44 King's Pawn Game |
| 97. M Heintze vs U Seidemann |
| ½-½ | 53 | 1974 | East German Championship (Women) | C05 French, Tarrasch |
| 98. C Lehmann vs M Heintze |
| 1-0 | 33 | 1974 | East German Championship (Women) | C96 Ruy Lopez, Closed |
| 99. M Heintze vs B Burchardt |
| ½-½ | 23 | 1974 | East German Championship (Women) | A51 Budapest Gambit |
| 100. G Just vs M Heintze |
| 0-1 | 50 | 1974 | East German Championship (Women) | D02 Queen's Pawn Game |
Kibitzing
