Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. F H Hansen vs C J Nielsen |
| 1-0 | 25 | 1989 | Copenhagen Open | C57 Two Knights |
2. C J Nielsen vs T Hoff |
| 1-0 | 34 | 1989 | Copenhagen Open | E70 King's Indian |
3. B Jensen vs C J Nielsen |
| ½-½ | 36 | 1989 | Copenhagen Open | A07 King's Indian Attack |
4. C J Nielsen vs F Jensen |
| 0-1 | 27 | 1989 | Copenhagen Open | D63 Queen's Gambit Declined, Orthodox Defense |
5. J Hvenekilde vs C J Nielsen |
| 1-0 | 22 | 1989 | Copenhagen Open | D19 Queen's Gambit Declined Slav, Dutch |
6. C J Nielsen vs W Kruszynski |
| 0-1 | 37 | 1989 | Copenhagen Open | E20 Nimzo-Indian |
7. G Fant vs C J Nielsen |
| 0-1 | 20 | 1989 | Copenhagen Open | D10 Queen's Gambit Declined Slav |
8. C J Nielsen vs J Andreasen |
| 0-1 | 66 | 1989 | Copenhagen Open | D31 Queen's Gambit Declined |
9. R Lilja vs C J Nielsen |
| 0-1 | 28 | 1989 | Copenhagen Open | C57 Two Knights |
10. F Bonnez vs C J Nielsen |
| ½-½ | 50 | 1989 | Copenhagen Open | D02 Queen's Pawn Game |
11. C J Nielsen vs U B Hansen |
| ½-½ | 31 | 1990 | Copenhagen Open | D63 Queen's Gambit Declined, Orthodox Defense |
12. B Jorgensen vs C J Nielsen |
| ½-½ | 19 | 1990 | Copenhagen Open | D17 Queen's Gambit Declined Slav |
13. C J Nielsen vs J Hald |
| 1-0 | 60 | 1990 | Copenhagen Open | E94 King's Indian, Orthodox |
14. K Pedersen vs C J Nielsen |
| ½-½ | 26 | 1990 | Copenhagen Open | D19 Queen's Gambit Declined Slav, Dutch |
15. C J Nielsen vs S Fedder |
| 0-1 | 47 | 1990 | Copenhagen Open | D45 Queen's Gambit Declined Semi-Slav |
16. V Juergens vs C J Nielsen |
| 1-0 | 57 | 1990 | Copenhagen Open | D10 Queen's Gambit Declined Slav |
17. C J Nielsen vs K V Andersen |
| 1-0 | 43 | 1990 | Copenhagen Open | E92 King's Indian |
18. O Dannevig vs C J Nielsen |
| 1-0 | 26 | 1990 | Copenhagen Open | C45 Scotch Game |
19. S Rosell vs C J Nielsen |
| 1-0 | 38 | 1990 | Copenhagen Open | A16 English |
20. C J Nielsen vs M Simonsen |
| ½-½ | 20 | 1990 | Copenhagen Open | D56 Queen's Gambit Declined |
21. F Fuglsang vs C J Nielsen |
| 1-0 | 17 | 1991 | Copenhagen Open | A13 English |
22. C J Nielsen vs N S Nilsson |
| ½-½ | 41 | 1991 | Copenhagen Open | E73 King's Indian |
23. C J Nielsen vs B J Jorgensen |
| ½-½ | 31 | 1991 | Copenhagen Open | A80 Dutch |
24. C J Nielsen vs A Holst |
| ½-½ | 45 | 1991 | Copenhagen Open | E20 Nimzo-Indian |
25. P Green vs C J Nielsen |
| ½-½ | 33 | 1991 | Copenhagen Open | D15 Queen's Gambit Declined Slav |