| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J O Fries-Nielsen vs C M Bjork |
| 1-0 | 35 | 1975 | 11th Junior International Tournament | B08 Pirc, Classical |
| 2. J O Fries-Nielsen vs Petursson |
| 0-1 | 27 | 1975 | 11th Junior International Tournament | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 3. D Donchev vs J O Fries-Nielsen |
| 1-0 | 42 | 1975 | 11th Junior International Tournament | C50 Giuoco Piano |
| 4. J O Fries-Nielsen vs W Honigl |
| 1-0 | 42 | 1975 | 11th Junior International Tournament | C01 French, Exchange |
| 5. J O Fries-Nielsen vs C Bergstrom |
| 0-1 | 32 | 1976 | 11th Junior International Tournament | A00 Uncommon Opening |
| 6. J O Fries-Nielsen vs L Madebrink |
 | 1-0 | 32 | 1976 | 11th Junior International Tournament | B56 Sicilian |
| 7. C Doucet vs J O Fries-Nielsen |
| 1-0 | 48 | 1976 | 11th Junior International Tournament | B74 Sicilian, Dragon, Classical |
| 8. J O Fries-Nielsen vs P Iten |
| 1-0 | 32 | 1976 | 11th Junior International Tournament | A46 Queen's Pawn Game |
| 9. A Duer vs J O Fries-Nielsen |
| 0-1 | 34 | 1977 | World Junior Championship | C27 Vienna Game |
| 10. J O Fries-Nielsen vs C Morris |
| 1-0 | 40 | 1977 | World Junior Championship | A04 Reti Opening |
| 11. P Iten vs J O Fries-Nielsen |
| ½-½ | 26 | 1977 | World Junior Championship | B04 Alekhine's Defense, Modern |
| 12. J O Fries-Nielsen vs C Ionescu |
| 1-0 | 26 | 1977 | World Junior Championship | A07 King's Indian Attack |
| 13. J O Fries-Nielsen vs V Maki |
| 1-0 | 40 | 1977 | World Junior Championship | A04 Reti Opening |
| 14. N Grinberg vs J O Fries-Nielsen |
| ½-½ | 47 | 1977 | World Junior Championship | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 15. J O Fries-Nielsen vs A Yusupov |
| 0-1 | 40 | 1977 | World Junior Championship | C55 Two Knights Defense |
| 16. Chandler vs J O Fries-Nielsen |
| 0-1 | 58 | 1977 | World Junior Championship | B00 Uncommon King's Pawn Opening |
| 17. J O Fries-Nielsen vs R Vera |
| 0-1 | 65 | 1977 | World Junior Championship | A49 King's Indian, Fianchetto without c4 |
| 18. S Skembris vs J O Fries-Nielsen |
| ½-½ | 42 | 1977 | World Junior Championship | E11 Bogo-Indian Defense |
| 19. J O Fries-Nielsen vs P Popovic |
| 1-0 | 77 | 1977 | World Junior Championship | E62 King's Indian, Fianchetto |
| 20. A Groszpeter vs J O Fries-Nielsen |
| 1-0 | 50 | 1977 | World Junior Championship | B04 Alekhine's Defense, Modern |
| 21. J O Fries-Nielsen vs P Stempin |
| 1-0 | 42 | 1977 | World Junior Championship | E63 King's Indian, Fianchetto, Panno Variation |
| 22. Kasparov vs J O Fries-Nielsen |
 | 1-0 | 53 | 1977 | Wch U17 | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 23. J O Fries-Nielsen vs J Mestel |
| 1-0 | 39 | 1978 | Esbjerg | A07 King's Indian Attack |
| 24. J O Fries-Nielsen vs U Rath |
| 0-1 | 33 | 1978 | Esbjerg | A15 English |
| 25. J O Fries-Nielsen vs J Sloth |
| ½-½ | 23 | 1978 | Esbjerg | E62 King's Indian, Fianchetto |
Kibitzing
