| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. U Rueetschi vs M Fierz |
| 1-0 | 69 | 2003 | SUI-chT | D15 Queen's Gambit Declined Slav |
| 27. M Fierz vs A Korotylev |
| ½-½ | 38 | 2003 | SUI-ch 103rd | B60 Sicilian, Richter-Rauzer |
| 28. M Fierz vs B Zueger |
| 0-1 | 28 | 2005 | Swiss Championship (International) | B68 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 9...Be7 |
| 29. M Fierz vs M Klauser |
| ½-½ | 45 | 2005 | Swiss Championship (International) | A20 English |
| 30. M Fierz vs D Burnier |
| 0-1 | 74 | 2005 | Swiss Championship (International) | A10 English |
| 31. L Muheim vs M Fierz |
| 0-1 | 35 | 2005 | Swiss Championship (International) | B44 Sicilian |
| 32. M Fierz vs R Moor |
| 0-1 | 23 | 2005 | Swiss Championship (International) | A10 English |
| 33. M Fierz vs V Golod |
| ½-½ | 45 | 2005 | Zurich Weihnachtsopen | A10 English |
| 34. M Fierz vs R Ruck |
| ½-½ | 34 | 2005 | Zurich Weihnachtsopen | A20 English |
| 35. E Brestian vs M Fierz |
| 1-0 | 39 | 2006 | Triesen op | B20 Sicilian |
| 36. J Gallagher vs M Fierz |
| ½-½ | 80 | 2011 | TCh-SUI | B47 Sicilian, Taimanov (Bastrikov) Variation |
Kibitzing
