| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. Nunn vs M Heidrich |
| 1-0 | 40 | 1985 | Bundesliga 1984/85 | C80 Ruy Lopez, Open |
| 27. K Wockenfuss vs M Heidrich |
| ½-½ | 52 | 1985 | Bundesliga 8485 | A00 Uncommon Opening |
| 28. M Heidrich vs L Arnold |
| 0-1 | 30 | 1985 | Baden-Bayern tt | B29 Sicilian, Nimzovich-Rubinstein |
| 29. L Arnold vs M Heidrich |
| 1-0 | 24 | 1985 | Baden-Bayern tt | B29 Sicilian, Nimzovich-Rubinstein |
| 30. M Heidrich vs V Ruehrig |
| 1-0 | 52 | 1986 | Bundesliga 8586 | C42 Petrov Defense |
| 31. L Christiansen vs M Heidrich |
| 1-0 | 19 | 1987 | Bundesliga 1987/88 | D20 Queen's Gambit Accepted |
| 32. M Heidrich vs Lobron |
 | 0-1 | 28 | 1987 | Bundesliga 1987/88 | B18 Caro-Kann, Classical |
| 33. M Heidrich vs H Bastian |
| 1-0 | 30 | 1988 | Bundesliga 1987/88 | B00 Uncommon King's Pawn Opening |
| 34. M Heidrich vs C Gabriel |
| 1-0 | 46 | 1990 | BL2-S 9091 | C45 Scotch Game |
| 35. M Heidrich vs O Sick |
| 1-0 | 36 | 1991 | BL2-S 9091 | B06 Robatsch |
| 36. P Drahtschmidt vs M Heidrich |
| 1-0 | 25 | 1991 | Koblenz RM SC op | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 37. M Heidrich vs G Ginsburg |
| 0-1 | 40 | 1995 | BL2-O 9495 | B22 Sicilian, Alapin |
| 38. M Schoeneberg vs M Heidrich |
| ½-½ | 47 | 1996 | BL2-O 9596 | C13 French |
| 39. M Heidrich vs K Bischoff |
| ½-½ | 17 | 1996 | German Championship | B40 Sicilian |
| 40. C Lutz vs M Heidrich |
| ½-½ | 55 | 1996 | German Championship | B32 Sicilian |
| 41. M Heidrich vs L Hetey |
| 1-0 | 43 | 1996 | German Championship | C11 French |
| 42. R Mainka vs M Heidrich |
| 1-0 | 45 | 1996 | German Championship | B31 Sicilian, Rossolimo Variation |
| 43. M Heidrich vs M Glienke |
| ½-½ | 26 | 1996 | German Championship | B22 Sicilian, Alapin |
| 44. M Homuth vs M Heidrich |
| 0-1 | 47 | 1996 | German Championship | B23 Sicilian, Closed |
| 45. M Heidrich vs H Bastian |
| 1-0 | 54 | 1996 | German Championship | B06 Robatsch |
| 46. A Lagunow vs M Heidrich |
| ½-½ | 30 | 1996 | German Championship | A88 Dutch, Leningrad, Main Variation with c6 |
| 47. M Heidrich vs R Rabiega |
| 0-1 | 53 | 1996 | German Championship | B32 Sicilian |
| 48. T Assmann vs M Heidrich |
| 1-0 | 44 | 1997 | BL2-O 9798 | D02 Queen's Pawn Game |
| 49. M Heidenfeld vs M Heidrich |
| 0-1 | 44 | 1999 | Bodensee-Cup 5th | B29 Sicilian, Nimzovich-Rubinstein |
| 50. M Heidrich vs F Doettling |
| 0-1 | 35 | 1999 | Bodensee-Cup 5th | B18 Caro-Kann, Classical |
Kibitzing
