| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. R Baldursson vs J H Nielsen |
| 0-1 | 50 | 2002 | Politiken Cup | C50 Giuoco Piano |
| 27. J H Nielsen vs J Raunkjaer |
| 1-0 | 33 | 2002 | Politiken Cup | A00 Uncommon Opening |
| 28. S Radovic vs J H Nielsen |
| 0-1 | 66 | 2003 | Politiken Cup | B30 Sicilian |
| 29. J H Nielsen vs K Larsen |
| 0-1 | 32 | 2003 | Politiken Cup | B15 Caro-Kann |
| 30. A Rosenkilde vs J H Nielsen |
| 1-0 | 63 | 2003 | Politiken Cup | A40 Queen's Pawn Game |
| 31. J H Nielsen vs J M Hansen |
| 0-1 | 60 | 2003 | Politiken Cup | B12 Caro-Kann Defense |
| 32. J Nilsson vs J H Nielsen |
| 0-1 | 25 | 2003 | Politiken Cup | A00 Uncommon Opening |
| 33. J H Nielsen vs H Christensen |
| 1-0 | 42 | 2003 | Politiken Cup | D01 Richter-Veresov Attack |
| 34. C Harstad vs J H Nielsen |
| 1-0 | 16 | 2003 | Politiken Cup | D52 Queen's Gambit Declined |
| 35. J H Nielsen vs P Ottosen |
| ½-½ | 108 | 2003 | Politiken Cup | B12 Caro-Kann Defense |
| 36. E Christoffersen vs J H Nielsen |
| 0-1 | 91 | 2003 | Politiken Cup | B00 Uncommon King's Pawn Opening |
| 37. J H Nielsen vs U Larsen |
| ½-½ | 41 | 2003 | Politiken Cup | A00 Uncommon Opening |
| 38. S Thestrup vs J H Nielsen |
| 0-1 | 14 | 2003 | Politiken Cup | B00 Uncommon King's Pawn Opening |
| 39. J H Nielsen vs C Bonnor |
| 1-0 | 32 | 2004 | Copenhagen AS04 Centenary | A00 Uncommon Opening |
| 40. T Bromann vs J H Nielsen |
| 1-0 | 36 | 2004 | Copenhagen AS04 Centenary | D02 Queen's Pawn Game |
| 41. J H Nielsen vs N Petersen |
| ½-½ | 30 | 2004 | Copenhagen AS04 Centenary | A45 Queen's Pawn Game |
| 42. E Nielsen vs J H Nielsen |
| 0-1 | 36 | 2004 | Copenhagen AS04 Centenary | A03 Bird's Opening |
| 43. T Jaksland vs J H Nielsen |
| 1-0 | 47 | 2004 | Copenhagen AS04 Centenary | B00 Uncommon King's Pawn Opening |
| 44. J H Nielsen vs J G Andersen |
| 0-1 | 72 | 2004 | Copenhagen AS04 Centenary | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 45. B Klos vs J H Nielsen |
| 0-1 | 23 | 2004 | Copenhagen AS04 Centenary | D20 Queen's Gambit Accepted |
| 46. J H Nielsen vs K Larsen |
| 1-0 | 34 | 2004 | Copenhagen AS04 Centenary | C68 Ruy Lopez, Exchange |
| 47. H Mortensen vs J H Nielsen |
| ½-½ | 12 | 2004 | Copenhagen AS04 Centenary | D02 Queen's Pawn Game |
| 48. F Zyde vs J H Nielsen |
| 0-1 | 37 | 2004 | Politiken Cup | B00 Uncommon King's Pawn Opening |
| 49. J H Nielsen vs R Bjerke |
| 0-1 | 58 | 2004 | Politiken Cup | A00 Uncommon Opening |
| 50. I A Mossin vs J H Nielsen |
| ½-½ | 45 | 2004 | Politiken Cup | B00 Uncommon King's Pawn Opening |
Kibitzing
