| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. H E Bruun vs L A Nielsen |
| ½-½ | 25 | 1980 | International Junior Tournament | B18 Caro-Kann, Classical |
| 2. L A Nielsen vs T Ochsner |
| ½-½ | 28 | 1980 | International Junior Tournament | C29 Vienna Gambit |
| 3. L A Nielsen vs L M Mikkelsen |
| ½-½ | 13 | 1980 | International Junior Tournament | C05 French, Tarrasch |
| 4. L A Nielsen vs D King |
| 0-1 | 39 | 1980 | International Junior Tournament | A07 King's Indian Attack |
| 5. L A Nielsen vs M Andersen |
| 0-1 | 39 | 1980 | International Junior Tournament | B00 Uncommon King's Pawn Opening |
| 6. J Leppala vs L A Nielsen |
| ½-½ | 65 | 1980 | International Junior Tournament | B18 Caro-Kann, Classical |
| 7. H Kuijf vs L A Nielsen |
| 1-0 | 59 | 1980 | International Junior Tournament | B13 Caro-Kann, Exchange |
| 8. L A Nielsen vs C Krogh |
| 0-1 | 23 | 1991 | Open Danish Junior Championship | C15 French, Winawer |
| 9. L A Nielsen vs M Antonsen |
| ½-½ | 44 | 1991 | Open Danish Junior Championship | C16 French, Winawer |
| 10. L A Nielsen vs P Jirovsky |
| ½-½ | 22 | 1991 | Open Danish Junior Championship | D00 Queen's Pawn Game |
| 11. D Ronneland vs L A Nielsen |
| ½-½ | 21 | 1991 | Open Danish Junior Championship | C10 French |
| 12. S Zjukin vs L A Nielsen |
| 1-0 | 26 | 1991 | Open Danish Junior Championship | C09 French, Tarrasch, Open Variation, Main line |
| 13. L A Nielsen vs C Rasmussen |
 | ½-½ | 2 | 1991 | Open Danish Junior Championship | A41 Queen's Pawn Game (with ...d6) |
| 14. L A Nielsen vs S Pedersen |
| 1-0 | 51 | 1991 | Open Danish Junior Championship | D00 Queen's Pawn Game |
| 15. C Jepson vs L A Nielsen |
| 0-1 | 41 | 1991 | Open Danish Junior Championship | C18 French, Winawer |
| 16. C Hansen vs L A Nielsen |
| ½-½ | 24 | 1991 | Open Danish Junior Championship | E12 Queen's Indian |
| 17. L A Nielsen vs M Brodsky |
| 0-1 | 51 | 1994 | Politiken Cup 16th | B22 Sicilian, Alapin |
| 18. J Almer vs L A Nielsen |
| 0-1 | 59 | 2006 | Politiken Cup | C04 French, Tarrasch, Guimard Main line |
| 19. L A Nielsen vs N Kirkegaard |
| 0-1 | 25 | 2006 | Politiken Cup | B22 Sicilian, Alapin |
| 20. B Svanholm vs L A Nielsen |
| 0-1 | 41 | 2006 | Politiken Cup | A13 English |
| 21. L A Nielsen vs H Strand |
| ½-½ | 32 | 2006 | Politiken Cup | B22 Sicilian, Alapin |
| 22. S Eddy vs L A Nielsen |
| ½-½ | 19 | 2006 | Politiken Cup | C02 French, Advance |
| 23. L A Nielsen vs J Zachariassen |
| 1-0 | 36 | 2006 | Politiken Cup | B06 Robatsch |
| 24. E Holstein vs L A Nielsen |
| 0-1 | 42 | 2006 | Politiken Cup | A03 Bird's Opening |
| 25. L A Nielsen vs D Boros |
| 0-1 | 27 | 2006 | Politiken Cup | B22 Sicilian, Alapin |
Kibitzing
