| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. L Nielsen vs P Dalberg |
| 0-1 | 33 | 2009 | Politiken Cup | C00 French Defense |
| 2. J Henrichsen vs L Nielsen |
| 1-0 | 47 | 2013 | Politiken Cup | D11 Queen's Gambit Declined Slav |
| 3. L Nielsen vs J Haug |
| 0-1 | 29 | 2014 | Politiken Cup | C00 French Defense |
| 4. M Nielsen vs L Nielsen |
| 1-0 | 65 | 2014 | Politiken Cup | B22 Sicilian, Alapin |
| 5. L Nielsen vs E Bremer |
| 1-0 | 28 | 2014 | Politiken Cup | B50 Sicilian |
| 6. L Hyldkrog vs L Nielsen |
| 1-0 | 23 | 2014 | Politiken Cup | B77 Sicilian, Dragon, Yugoslav Attack |
| 7. L Nielsen vs I Jensen |
| 0-1 | 32 | 2014 | Politiken Cup | B00 Uncommon King's Pawn Opening |
| 8. L Starup vs L Nielsen |
| 0-1 | 52 | 2014 | Politiken Cup | D43 Queen's Gambit Declined Semi-Slav |
| 9. L Nielsen vs A G Tryggestad |
| 0-1 | 23 | 2014 | Politiken Cup | B20 Sicilian |
| 10. P Langer vs L Nielsen |
| 0-1 | 45 | 2014 | Politiken Cup | A40 Queen's Pawn Game |
| 11. L Nielsen vs B A Christenson |
| 1-0 | 63 | 2014 | Politiken Cup | C45 Scotch Game |
| 12. L Nielsen vs E O Risting |
| 0-1 | 27 | 2015 | Politiken Cup | B30 Sicilian |
| 13. B R Fjallheim vs L Nielsen |
| ½-½ | 59 | 2015 | Politiken Cup | B30 Sicilian |
| 14. L Nielsen vs L Ranaldi |
 | 0-1 | 49 | 2015 | Politiken Cup | B27 Sicilian |
| 15. Kasher Shehzad vs L Nielsen |
| 0-1 | 49 | 2015 | Politiken Cup | B30 Sicilian |
| 16. J Mehringer vs L Nielsen |
| 1-0 | 92 | 2015 | Politiken Cup | B20 Sicilian |
| 17. L Nielsen vs T Hall |
| 0-1 | 32 | 2015 | Politiken Cup | B88 Sicilian, Fischer-Sozin Attack |
| 18. H C Vestjord vs L Nielsen |
| ½-½ | 71 | 2015 | Politiken Cup | A40 Queen's Pawn Game |
| 19. L Nielsen vs J Jensen |
| 1-0 | 33 | 2015 | Politiken Cup | C47 Four Knights |
| 20. E Loveid vs L Nielsen |
| 1-0 | 37 | 2015 | Politiken Cup | A40 Queen's Pawn Game |
| 21. A Issakainen vs L Nielsen |
| 1-0 | 38 | 2017 | Xtracon Chess Open | A04 Reti Opening |
| 22. H A Jensen vs L Nielsen |
| 0-1 | 63 | 2017 | Xtracon Chess Open | B25 Sicilian, Closed |
| 23. L Nielsen vs P Klings |
| 0-1 | 76 | 2017 | Xtracon Chess Open | B06 Robatsch |
| 24. L Nielsen vs E Trost |
| 0-1 | 9 | 2017 | Xtracon Chess Open | B20 Sicilian |
| 25. V M Leonhardsen vs L Nielsen |
| ½-½ | 46 | 2017 | Xtracon Chess Open | D31 Queen's Gambit Declined |
Kibitzing
