| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Hartung-Nielsen vs T Ernst |
| 1-0 | 41 | 1982 | Politiken Cup | A46 Queen's Pawn Game |
| 27. J Hartung-Nielsen vs L Spassov |
| 0-1 | 38 | 1982 | Politiken Cup | D45 Queen's Gambit Declined Semi-Slav |
| 28. G Iskov vs J Hartung-Nielsen |
| 1-0 | 41 | 1982 | Politiken Cup | B23 Sicilian, Closed |
| 29. K Kaiszauri vs J Hartung-Nielsen |
| 0-1 | 30 | 1982 | Politiken Cup | D33 Queen's Gambit Declined, Tarrasch |
| 30. J Hartung-Nielsen vs D Kopec |
| 0-1 | 50 | 1982 | Politiken Cup | E12 Queen's Indian |
| 31. C Hoi vs J Hartung-Nielsen |
| 0-1 | 37 | 1982 | Politiken Cup | D32 Queen's Gambit Declined, Tarrasch |
| 32. V Ravikumar vs J Hartung-Nielsen |
| ½-½ | 55 | 1982 | Politiken Cup | D02 Queen's Pawn Game |
| 33. J O Fries-Nielsen vs J Hartung-Nielsen |
| ½-½ | 32 | 1982 | Politiken Cup | D33 Queen's Gambit Declined, Tarrasch |
| 34. M Moe vs J Hartung-Nielsen |
| 0-1 | 26 | 1982 | Politiken Cup | C41 Philidor Defense |
| 35. J Hartung-Nielsen vs W Morris |
| ½-½ | 33 | 1982 | Gausdal International | E60 King's Indian Defense |
| 36. I Hakki vs J Hartung-Nielsen |
| 1-0 | 39 | 1982 | Gausdal International | C41 Philidor Defense |
| 37. G Andruet vs J Hartung-Nielsen |
| 0-1 | 35 | 1982 | Gausdal International | D33 Queen's Gambit Declined, Tarrasch |
| 38. J Hartung-Nielsen vs A Semakoff |
| 0-1 | 26 | 1982 | Gausdal International | D32 Queen's Gambit Declined, Tarrasch |
| 39. K Berg vs J Hartung-Nielsen |
| ½-½ | 54 | 1984 | Politiken Cup | D34 Queen's Gambit Declined, Tarrasch |
| 40. J Hartung-Nielsen vs L Schandorff |
| 0-1 | 26 | 1984 | Politiken Cup | D85 Grunfeld |
| 41. J Hartung-Nielsen vs A Poulsen |
| 1-0 | 23 | 1984 | Politiken Cup | A40 Queen's Pawn Game |
| 42. D Cramling vs J Hartung-Nielsen |
| 1-0 | 41 | 1984 | Politiken Cup | D33 Queen's Gambit Declined, Tarrasch |
| 43. J Hartung-Nielsen vs B Brinck-Claussen |
| ½-½ | 31 | 1984 | Politiken Cup | A47 Queen's Indian |
| 44. F Petersen vs J Hartung-Nielsen |
| ½-½ | 43 | 1984 | Politiken Cup | B74 Sicilian, Dragon, Classical |
| 45. M Fuller vs J Hartung-Nielsen |
| ½-½ | 42 | 1984 | Politiken Cup | D02 Queen's Pawn Game |
| 46. J Hartung-Nielsen vs M Moe |
| ½-½ | 57 | 1984 | Politiken Cup | D85 Grunfeld |
| 47. P Berkell vs J Hartung-Nielsen |
| ½-½ | 10 | 1984 | Politiken Cup | D05 Queen's Pawn Game |
| 48. J Hartung-Nielsen vs F Portisch |
| ½-½ | 24 | 1984 | Politiken Cup | D33 Queen's Gambit Declined, Tarrasch |
| 49. S Bjarnason vs J Hartung-Nielsen |
| 0-1 | 68 | 1985 | Politiken Cup | D43 Queen's Gambit Declined Semi-Slav |
| 50. K Bjerring vs J Hartung-Nielsen |
| 1-0 | 51 | 1985 | Politiken Cup | B76 Sicilian, Dragon, Yugoslav Attack |
Kibitzing
