| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. T Schmitt vs M Fierz |
| 1-0 | 15 | 1987 | Bern-Heidelberg | C35 King's Gambit Accepted, Cunningham |
| 2. G Barbero vs M Fierz |
| 1-0 | 53 | 1992 | Zurich | A13 English |
| 3. J Ambroz vs M Fierz |
| ½-½ | 27 | 1992 | Suhr op | A07 King's Indian Attack |
| 4. B Trabert vs M Fierz |
| 0-1 | 47 | 1993 | Zuerich Open | B22 Sicilian, Alapin |
| 5. C Haas vs M Fierz |
| 1-0 | 27 | 1993 | Zuerich Open | A20 English |
| 6. M Fierz vs W Winterstein |
| 0-1 | 28 | 1993 | Zuerich Open | C11 French |
| 7. M Fierz vs I Donev |
| 1-0 | 39 | 1993 | Zuerich Open | C49 Four Knights |
| 8. M Fierz vs Blatny |
| 0-1 | 24 | 1994 | Bad Ragaz Open | B07 Pirc |
| 9. V Allegro vs M Fierz |
| 1-0 | 23 | 1994 | Bad Ragaz Open | A01 Nimzovich-Larsen Attack |
| 10. M Fierz vs J Jurek |
| 0-1 | 23 | 1996 | Neuchatel Open | C19 French, Winawer, Advance |
| 11. M Fierz vs H Speck |
| ½-½ | 26 | 1997 | Weihnachts op-M 21th | B02 Alekhine's Defense |
| 12. M Fierz vs C Gabriel |
| 0-1 | 36 | 1999 | SUI-chT | B09 Pirc, Austrian Attack |
| 13. M Fierz vs R Ekstrom |
| 0-1 | 50 | 1999 | SUI-ch | B18 Caro-Kann, Classical |
| 14. G Siegel vs M Fierz |
| 1-0 | 28 | 2000 | Pontresina SEM-HT I | D30 Queen's Gambit Declined |
| 15. M Fierz vs M Gurevich |
| 0-1 | 35 | 2001 | Cappelle Open | B09 Pirc, Austrian Attack |
| 16. M Fierz vs I Nemet |
| 0-1 | 23 | 2001 | Swiss Championship | B90 Sicilian, Najdorf |
| 17. M Fierz vs G Siegel |
| 0-1 | 41 | 2001 | SUI-chT | B56 Sicilian |
| 18. M Fierz vs H Linder |
| 1-0 | 27 | 2001 | 1st Chess Week | C18 French, Winawer |
| 19. M Pavlovic vs M Fierz |
| 1-0 | 13 | 2001 | 1st Chess Week | B46 Sicilian, Taimanov Variation |
| 20. Y Ecabert vs M Fierz |
| 0-1 | 34 | 2001 | 1st Chess Week | B48 Sicilian, Taimanov Variation |
| 21. M Fierz vs V Meijers |
| 1-0 | 61 | 2001 | 1st Chess Week | B42 Sicilian, Kan |
| 22. Milov vs M Fierz |
| 1-0 | 19 | 2001 | 1st Chess Week | D10 Queen's Gambit Declined Slav |
| 23. M Fierz vs A Huss |
| 1-0 | 54 | 2001 | 1st Chess Week | C16 French, Winawer |
| 24. M Ezat vs M Fierz |
 | 1-0 | 19 | 2001 | 1st Chess Week | D10 Queen's Gambit Declined Slav |
| 25. V Golod vs M Fierz |
| 1-0 | 21 | 2003 | Zuerich op-A 27th | D12 Queen's Gambit Declined Slav |
Kibitzing
