| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. D Uddenfeldt vs J Moles |
| 0-1 | 39 | 1969 | World Junior Championship qual-1 | E83 King's Indian, Samisch |
| 2. L Neckar vs D Uddenfeldt |
| 1-0 | 33 | 1969 | World Junior Championship qual-1 | E63 King's Indian, Fianchetto, Panno Variation |
| 3. D Uddenfeldt vs J Kaplan |
| ½-½ | 64 | 1969 | World Junior Championship qual-1 | A25 English |
| 4. A H Williams vs D Uddenfeldt |
| 0-1 | 46 | 1969 | World Junior Championship qual-1 | B05 Alekhine's Defense, Modern |
| 5. D Uddenfeldt vs V Silva |
| 1-0 | 36 | 1969 | World Junior Championship qual-1 | A16 English |
| 6. N Craske vs D Uddenfeldt |
| 1-0 | 33 | 1969 | World Junior Championship qual-1 | B03 Alekhine's Defense |
| 7. J Moles vs D Uddenfeldt |
| 1-0 | 40 | 1969 | World Junior Championship Final-C | A44 Old Benoni Defense |
| 8. D Uddenfeldt vs V Silva |
| 1-0 | 36 | 1969 | World Junior Championship Final-C | E85 King's Indian, Samisch, Orthodox Variation |
| 9. D Uddenfeldt vs K Harandi |
| 1-0 | 43 | 1969 | World Junior Championship Final-C | E12 Queen's Indian |
| 10. D Uddenfeldt vs J Bellon Lopez |
| ½-½ | 42 | 1969 | World Junior Championship Final-C | A27 English, Three Knights System |
| 11. W Hug vs D Uddenfeldt |
| 1-0 | 22 | 1969 | World Junior Championship Final-C | B06 Robatsch |
| 12. T Ristoja vs D Uddenfeldt |
| 0-1 | 36 | 1969 | World Junior Championship Final-C | B05 Alekhine's Defense, Modern |
| 13. D Uddenfeldt vs A Sznapik |
| 1-0 | 44 | 1969 | World Junior Championship Final-C | D55 Queen's Gambit Declined |
| 14. D Uddenfeldt vs J Seret |
| ½-½ | 59 | 1969 | World Junior Championship Final-C | D15 Queen's Gambit Declined Slav |
| 15. R Weber vs D Uddenfeldt |
| 0-1 | 54 | 1969 | World Junior Championship Final-C | E99 King's Indian, Orthodox, Taimanov |
| 16. C Sumiacher vs D Uddenfeldt |
| 1-0 | 26 | 1969 | World Junior Championship Final-C | A00 Uncommon Opening |
| 17. R Meulders vs D Uddenfeldt |
| 1-0 | 50 | 1969 | World Junior Championship Final-C | A00 Uncommon Opening |
| 18. D Uddenfeldt vs E Ermenkov |
| 1-0 | 65 | 1970 | Niemeyer Juniors Preliminary | A79 Benoni, Classical, 11.f3 |
| 19. C Kiffmeyer vs D Uddenfeldt |
| ½-½ | 31 | 1970 | Niemeyer Juniors Preliminary | A69 Benoni, Four Pawns Attack, Main line |
| 20. D Uddenfeldt vs J Bellon Lopez |
| 1-0 | 38 | 1970 | Niemeyer Juniors Preliminary | A37 English, Symmetrical |
| 21. D Uddenfeldt vs S Saverymuttu |
| ½-½ | 40 | 1970 | Niemeyer Juniors Preliminary | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 22. E J Holt vs D Uddenfeldt |
| ½-½ | 23 | 1970 | Niemeyer Juniors Preliminary | B03 Alekhine's Defense |
| 23. S Fedder vs D Uddenfeldt |
| ½-½ | 16 | 1970 | Niemeyer Juniors Preliminary | A69 Benoni, Four Pawns Attack, Main line |
| 24. D Uddenfeldt vs R Cappello |
| ½-½ | 15 | 1970 | Niemeyer Juniors Preliminary | D30 Queen's Gambit Declined |
| 25. S Saverymuttu vs D Uddenfeldt |
| 1-0 | 39 | 1970 | Niemeyer Juniors 1970/71 | B06 Robatsch |
Kibitzing
