| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. L Zimmermann vs P Heaven |
| ½-½ | 51 | 1978 | European Junior Championship 1978/79 | B21 Sicilian, 2.f4 and 2.d4 |
| 2. A Muir vs L Zimmermann |
| 1-0 | 31 | 1978 | European Junior Championship 1978/79 | C84 Ruy Lopez, Closed |
| 3. L Zimmermann vs T Natsis |
| 0-1 | 31 | 1978 | European Junior Championship 1978/79 | B21 Sicilian, 2.f4 and 2.d4 |
| 4. L Zimmermann vs D Cramling |
| ½-½ | 41 | 1978 | European Junior Championship 1978/79 | C34 King's Gambit Accepted |
| 5. J Pereira Santos vs L Zimmermann |
| ½-½ | 28 | 1978 | European Junior Championship 1978/79 | D97 Grunfeld, Russian |
| 6. D Levacic vs L Zimmermann |
| 0-1 | 29 | 1978 | European Junior Championship 1978/79 | C29 Vienna Gambit |
| 7. L Zimmermann vs B Neuenschwander |
| ½-½ | 19 | 1978 | European Junior Championship 1978/79 | B22 Sicilian, Alapin |
| 8. G de Boer vs L Zimmermann |
| ½-½ | 29 | 1978 | European Junior Championship 1978/79 | C77 Ruy Lopez |
| 9. A McCarthy vs L Zimmermann |
| 1-0 | 19 | 1978 | European Junior Championship 1978/79 | C44 King's Pawn Game |
| 10. L Zimmermann vs R Ratti |
| 1-0 | 28 | 1979 | European Junior Championship 1978/79 | B22 Sicilian, Alapin |
| 11. L Zimmermann vs N Grinberg |
| 0-1 | 33 | 1979 | European Junior Championship 1978/79 | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 12. F X Mateu vs L Zimmermann |
| 1-0 | 27 | 1979 | European Junior Championship 1978/79 | A29 English, Four Knights, Kingside Fianchetto |
| 13. L Zimmermann vs L Arnold |
| 1-0 | 39 | 1979 | European Junior Championship 1978/79 | B22 Sicilian, Alapin |
| 14. Hort vs L Zimmermann |
| 1-0 | 34 | 1999 | Dutch Open | A22 English |
| 15. L Zimmermann vs T Dekker |
| 1-0 | 41 | 1999 | Dutch Open | B22 Sicilian, Alapin |
| 16. M Kobrin vs L Zimmermann |
| 1-0 | 69 | 1999 | Dutch Open | D85 Grunfeld |
| 17. A Gershon vs L Zimmermann |
| 1-0 | 36 | 1999 | Dutch Open | D96 Grunfeld, Russian Variation |
| 18. L Zimmermann vs S Algera |
| 0-1 | 28 | 1999 | Dutch Open | B22 Sicilian, Alapin |
| 19. C van Dongen vs L Zimmermann |
| 0-1 | 36 | 1999 | Dutch Open | D97 Grunfeld, Russian |
| 20. L Zimmermann vs G Molinari |
| 0-1 | 34 | 1999 | Dutch Open | B22 Sicilian, Alapin |
| 21. J Wolbers vs L Zimmermann |
| ½-½ | 47 | 1999 | Dutch Open | C02 French, Advance |
| 22. L Zimmermann vs N Kabanov |
| 1-0 | 47 | 1999 | Dutch Open | B00 Uncommon King's Pawn Opening |
| 23. Y Afek vs L Zimmermann |
| 1-0 | 31 | 2001 | Dieren op | C02 French, Advance |
| 24. L Zimmermann vs J Jens |
| 0-1 | 21 | 2001 | Dieren op | B22 Sicilian, Alapin |
| 25. R Lahaye vs L Zimmermann |
 | 1-0 | 64 | 2001 | Dieren op | A22 English |
Kibitzing
