| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. G Just vs M Heintze |
| ½-½ | 39 | 1971 | East German Championship (Women) | A45 Queen's Pawn Game |
| 52. W Nowarra vs M Heintze |
| 1-0 | 12 | 1971 | East German Championship (Women) | B07 Pirc |
| 53. M Heintze vs J Scholz |
| ½-½ | 45 | 1971 | East German Championship (Women) | B06 Robatsch |
| 54. M Heintze vs H Kube |
| 1-0 | 15 | 1971 | East German Championship (Women) | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 55. M Heintze vs L Janssen |
| ½-½ | 35 | 1971 | East German Championship (Women) | A07 King's Indian Attack |
| 56. A Wagner-Michel vs M Heintze |
| 0-1 | 41 | 1971 | East German Championship (Women) | B18 Caro-Kann, Classical |
| 57. M Heintze vs H Bade |
| 1-0 | 33 | 1971 | East German Championship (Women) | C77 Ruy Lopez |
| 58. C Lehmann vs M Heintze |
| 1-0 | 54 | 1971 | East German Championship (Women) | A07 King's Indian Attack |
| 59. G Tragsdorf vs M Heintze |
| 1-0 | 20 | 1971 | East German Championship (Women) | B41 Sicilian, Kan |
| 60. M Heintze vs I Winter |
| ½-½ | 25 | 1971 | East German Championship (Women) | C42 Petrov Defense |
| 61. I Helm vs M Heintze |
| 0-1 | 54 | 1971 | East German Championship (Women) | E90 King's Indian |
| 62. M Heintze vs E Nuenchert |
| ½-½ | 35 | 1971 | East German Championship (Women) | D90 Grunfeld |
| 63. M Heintze vs B Burchardt |
| ½-½ | 16 | 1971 | East German Championship (Women) | D00 Queen's Pawn Game |
| 64. W Nowarra vs M Heintze |
| 1-0 | 26 | 1973 | East German Championship (Women) | B23 Sicilian, Closed |
| 65. M Heintze vs I Boettcher |
| 0-1 | 15 | 1973 | East German Championship (Women) | C27 Vienna Game |
| 66. M Heintze vs C Lehmann |
| ½-½ | 18 | 1973 | East German Championship (Women) | B09 Pirc, Austrian Attack |
| 67. M Heintze vs A Wagner-Michel |
| 0-1 | 65 | 1973 | East German Championship (Women) | C97 Ruy Lopez, Closed, Chigorin |
| 68. M Heintze vs P Feustel |
| ½-½ | 16 | 1973 | East German Championship (Women) | B17 Caro-Kann, Steinitz Variation |
| 69. L Janssen vs M Heintze |
| ½-½ | 27 | 1973 | East German Championship (Women) | E90 King's Indian |
| 70. B Burchardt vs M Heintze |
| ½-½ | 17 | 1973 | East German Championship (Women) | C28 Vienna Game |
| 71. M Heintze vs E Nuenchert |
| 0-1 | 23 | 1973 | East German Championship (Women) | B43 Sicilian, Kan, 5.Nc3 |
| 72. H Kube vs M Heintze |
| 0-1 | 34 | 1973 | East German Championship (Women) | A27 English, Three Knights System |
| 73. H Bade vs M Heintze |
| 0-1 | 25 | 1973 | East German Championship (Women) | B43 Sicilian, Kan, 5.Nc3 |
| 74. M Heintze vs G Just |
| ½-½ | 24 | 1973 | East German Championship (Women) | C00 French Defense |
| 75. M Heintze vs I Roensch |
| 1-0 | 33 | 1973 | East German Championship (Women) | B18 Caro-Kann, Classical |
Kibitzing
