| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. H Kube vs M Heintze |
| ½-½ | 16 | 1970 | East German Championship (Women) | A30 English, Symmetrical |
| 27. M Heintze vs I Winter |
| 1-0 | 48 | 1970 | East German Championship (Women) | D25 Queen's Gambit Accepted |
| 28. L Janssen vs M Heintze |
| ½-½ | 35 | 1970 | East German Championship (Women) | D27 Queen's Gambit Accepted, Classical |
| 29. B Burchardt vs M Heintze |
| ½-½ | 13 | 1970 | East German Championship (Women) | C01 French, Exchange |
| 30. A Wagner-Michel vs M Heintze |
| ½-½ | 14 | 1970 | East German Championship (Women) | C01 French, Exchange |
| 31. G Just vs M Heintze |
| 1-0 | 21 | 1970 | East German Championship (Women) | D26 Queen's Gambit Accepted |
| 32. M Heintze vs J Scholz |
| ½-½ | 21 | 1970 | East German Championship (Women) | A46 Queen's Pawn Game |
| 33. M Heintze vs H Bade |
| ½-½ | 20 | 1970 | East German Championship (Women) | C45 Scotch Game |
| 34. M Heintze vs C Ehnert |
| 1-0 | 56 | 1970 | East German Championship (Women) | A05 Reti Opening |
| 35. M Heintze vs C Lehmann |
| ½-½ | 18 | 1970 | East German Championship (Women) | C01 French, Exchange |
| 36. I Roensch vs M Heintze |
| 0-1 | 35 | 1970 | East German Championship (Women) | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 37. E Nuenchert vs M Heintze |
| ½-½ | 40 | 1970 | East German Championship (Women) | C00 French Defense |
| 38. M Heintze vs E Polihroniade |
| ½-½ | 36 | 1970 | Szarvas (Women) | A04 Reti Opening |
| 39. K Eretova vs M Heintze |
| 1-0 | 18 | 1970 | Szarvas (Women) | B10 Caro-Kann |
| 40. V Borisenko vs M Heintze |
| 1-0 | 26 | 1970 | Halle (Women) | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 41. M Heintze vs G Baumstark |
| ½-½ | 31 | 1970 | Halle (Women) | D02 Queen's Pawn Game |
| 42. M Heintze vs H Kube |
| ½-½ | 11 | 1970 | Halle (Women) | D38 Queen's Gambit Declined, Ragozin Variation |
| 43. W Nowarra vs M Heintze |
| 1-0 | 63 | 1970 | Halle (Women) | C00 French Defense |
| 44. M Heintze vs A Wagner-Michel |
| ½-½ | 10 | 1970 | Halle (Women) | D79 Neo-Grunfeld, 6.O-O, Main line |
| 45. U Liebert vs M Heintze |
| ½-½ | 20 | 1970 | Halle (Women) | B41 Sicilian, Kan |
| 46. M Heintze vs E Nuenchert |
| ½-½ | 19 | 1970 | Halle (Women) | A04 Reti Opening |
| 47. M Heintze vs B Burchardt |
| ½-½ | 10 | 1970 | Halle (Women) | A05 Reti Opening |
| 48. V Shikova vs M Heintze |
| ½-½ | 55 | 1970 | Halle (Women) | B42 Sicilian, Kan |
| 49. R Kroggel vs M Heintze |
| ½-½ | 23 | 1970 | Halle (Women) | B43 Sicilian, Kan, 5.Nc3 |
| 50. A Buzsor vs M Heintze |
| 0-1 | 41 | 1970 | Halle (Women) | B23 Sicilian, Closed |
Kibitzing
