| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Nykopp vs A Soltis |
| 0-1 | 41 | 1970 | 17th World Student Team Championship | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 2. S Webb vs J Nykopp |
 | 1-0 | 68 | 1970 | WchT U26 17th | E01 Catalan, Closed |
| 3. C A Evans vs J Nykopp |
| 1-0 | 48 | 1970 | Islington Open | B32 Sicilian |
| 4. I Saren vs J Nykopp |
| 1-0 | 23 | 1972 | FIN-ch | B56 Sicilian |
| 5. P Poutiainen vs J Nykopp |
| 1-0 | 38 | 1976 | FIN-ch | A15 English |
| 6. J Auby vs J Nykopp |
| 1-0 | 45 | 1978 | Rilton Cup 1978/79 | B21 Sicilian, 2.f4 and 2.d4 |
| 7. J Nykopp vs T Wedberg |
| 0-1 | 40 | 1978 | Rilton Cup 1978/79 | C49 Four Knights |
| 8. L Schneider vs J Nykopp |
| ½-½ | 41 | 1978 | Rilton Cup 1978/79 | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 9. I Bilek vs J Nykopp |
| 1-0 | 35 | 1978 | Poutiainen Memorial | A14 English |
| 10. J Nykopp vs P Manne |
| 1-0 | 30 | 1981 | Gausdal Int | B16 Caro-Kann, Bronstein-Larsen Variation |
| 11. J Nykopp vs Plaskett |
| 0-1 | 55 | 1981 | Copenhagen Open | B84 Sicilian, Scheveningen |
| 12. A Poulsen vs J Nykopp |
| ½-½ | 68 | 1981 | Copenhagen Open | C65 Ruy Lopez, Berlin Defense |
| 13. J Nykopp vs L Spassov |
| ½-½ | 40 | 1981 | Copenhagen Open | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 14. P Scheeren vs J Nykopp |
| 1-0 | 69 | 1981 | Copenhagen Open | E00 Queen's Pawn Game |
| 15. G Carlsson vs J Nykopp |
| ½-½ | 48 | 1981 | Copenhagen Open | E11 Bogo-Indian Defense |
| 16. J Nykopp vs T Rosenlund |
| 1-0 | 28 | 1981 | Copenhagen Open | B16 Caro-Kann, Bronstein-Larsen Variation |
| 17. L D Evans vs J Nykopp |
| ½-½ | 15 | 1981 | Copenhagen Open | C50 Giuoco Piano |
| 18. K J Wicker vs J Nykopp |
| 1-0 | 51 | 1981 | Copenhagen Open | A45 Queen's Pawn Game |
| 19. J Nykopp vs M Reinert |
| ½-½ | 54 | 1981 | Copenhagen Open | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 20. D Hansson vs J Nykopp |
| 0-1 | 43 | 1981 | Copenhagen Open | B43 Sicilian, Kan, 5.Nc3 |
| 21. J Nykopp vs G West |
| 0-1 | 40 | 1981 | Lewisham International | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 22. E Schiller vs J Nykopp |
| 0-1 | 41 | 1981 | Lewisham International | A46 Queen's Pawn Game |
| 23. S Conquest vs J Nykopp |
| 1-0 | 37 | 1981 | Lewisham International | E07 Catalan, Closed |
| 24. J Nykopp vs A L Hosking |
| 1-0 | 37 | 1981 | Lewisham International | B15 Caro-Kann |
| 25. M Fette vs J Nykopp |
| ½-½ | 39 | 1981 | Lewisham International | C02 French, Advance |
Kibitzing
