| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. G Just vs M Heintze |
| 1-0 | 55 | 1969 | East German Championship (Women) | D00 Queen's Pawn Game |
| 2. L Knoch vs M Heintze |
| ½-½ | 41 | 1969 | East German Championship (Women) | D21 Queen's Gambit Accepted |
| 3. M Heintze vs L Baumann |
| 0-1 | 26 | 1969 | East German Championship (Women) | B40 Sicilian |
| 4. I Winter vs M Heintze |
| 1-0 | 48 | 1969 | East German Championship (Women) | B21 Sicilian, 2.f4 and 2.d4 |
| 5. F Ullrich vs M Heintze |
| ½-½ | 48 | 1969 | East German Championship (Women) | A22 English |
| 6. M Heintze vs W Nowarra |
| 0-1 | 39 | 1969 | East German Championship (Women) | B28 Sicilian, O'Kelly Variation |
| 7. M Heintze vs L Janssen |
| ½-½ | 39 | 1969 | East German Championship (Women) | C42 Petrov Defense |
| 8. M Heintze vs E Nuenchert |
| ½-½ | 16 | 1969 | East German Championship (Women) | B00 Uncommon King's Pawn Opening |
| 9. M Heintze vs I Roensch |
| 0-1 | 43 | 1969 | East German Championship (Women) | B16 Caro-Kann, Bronstein-Larsen Variation |
| 10. M Heintze vs G Tragsdorf |
| 0-1 | 31 | 1969 | East German Championship (Women) | B13 Caro-Kann, Exchange |
| 11. M Heintze vs C Espig |
| ½-½ | 29 | 1969 | East German Championship (Women) | B90 Sicilian, Najdorf |
| 12. U Pohl vs M Heintze |
| ½-½ | 45 | 1969 | East German Championship (Women) | A22 English |
| 13. C Lehmann vs M Heintze |
| 1-0 | 32 | 1969 | East German Championship (Women) | C46 Three Knights |
| 14. R Kroggel vs M Heintze |
| ½-½ | 22 | 1969 | Halle (Women) | C17 French, Winawer, Advance |
| 15. M Heintze vs M Pranner |
| ½-½ | 33 | 1969 | Halle (Women) | B25 Sicilian, Closed |
| 16. M Heintze vs C Espig |
| ½-½ | 32 | 1969 | Halle (Women) | E61 King's Indian |
| 17. M Heintze vs J Scholz |
| 1-0 | 64 | 1969 | Halle (Women) | B06 Robatsch |
| 18. V Shikova vs M Heintze |
| 1-0 | 38 | 1969 | Halle (Women) | C00 French Defense |
| 19. M Litmanowicz vs M Heintze |
| ½-½ | 37 | 1969 | Halle (Women) | D44 Queen's Gambit Declined Semi-Slav |
| 20. M Heintze vs E Mozna-Hojdarova |
| 1-0 | 54 | 1969 | Halle (Women) | A22 English |
| 21. M Heintze vs E Nuenchert |
| ½-½ | 36 | 1969 | Halle (Women) | B25 Sicilian, Closed |
| 22. B Burchardt vs M Heintze |
| 1-0 | 53 | 1969 | Halle (Women) | C02 French, Advance |
| 23. A Wagner-Michel vs M Heintze |
| ½-½ | 29 | 1969 | Halle (Women) | B18 Caro-Kann, Classical |
| 24. M Heintze vs K Sonnenberg |
| 1-0 | 32 | 1969 | Halle (Women) | A07 King's Indian Attack |
| 25. L Janssen vs M Heintze |
| ½-½ | 35 | 1970 | East German Championship (Women) | D27 Queen's Gambit Accepted, Classical |
Kibitzing
