| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. M Mueller vs M Lenhard |
| ½-½ | 34 | 1997 | Hassloch Open-A | C07 French, Tarrasch |
| 2. B Geyer vs M Mueller |
| 0-1 | 34 | 1997 | Hassloch Open-A | E70 King's Indian |
| 3. M Mueller vs J Staudt |
| 1-0 | 41 | 1997 | Hassloch Open-A | B16 Caro-Kann, Bronstein-Larsen Variation |
| 4. T Palma vs M Mueller |
| 1-0 | 35 | 1997 | Hassloch Open-A | A07 King's Indian Attack |
| 5. R Friedmann vs M Mueller |
| 1-0 | 39 | 2000 | Ruhrhalbinsel op 15th | B30 Sicilian |
| 6. G Kern vs M Mueller |
| 1-0 | 46 | 2002 | Recklinghausen op 13th | A16 English |
| 7. M Mueller vs F Molina |
| ½-½ | 33 | 2003 | Cesenatico Open | D02 Queen's Pawn Game |
| 8. M Mueller vs R Costantini |
| 0-1 | 19 | 2003 | Cesenatico Open | A58 Benko Gambit |
| 9. K Schuster vs M Mueller |
| 0-1 | 30 | 2003 | Cesenatico Open | E75 King's Indian, Averbakh, Main line |
| 10. E Pozzi vs M Mueller |
| 1-0 | 30 | 2003 | Cesenatico Open | B07 Pirc |
| 11. N Strijkers vs M Mueller |
| ½-½ | 14 | 2003 | Cesenatico Open | B07 Pirc |
| 12. M Mueller vs C Yeuillaz |
| 0-1 | 24 | 2003 | Cesenatico Open | A42 Modern Defense, Averbakh System |
| 13. Kupreichik vs M Mueller |
| 1-0 | 15 | 2004 | Muensterland Open | B07 Pirc |
| 14. P Bobras vs M Mueller |
| 1-0 | 31 | 2009 | Dresden ZMD Open | B09 Pirc, Austrian Attack |
| 15. M Mueller vs A Albers |
| 1-0 | 19 | 2009 | Dresden ZMD Open | C17 French, Winawer, Advance |
| 16. T Bueder vs M Mueller |
| ½-½ | 12 | 2009 | Dresden ZMD Open | B07 Pirc |
| 17. M Mueller vs A Stabolewski |
| 1-0 | 48 | 2009 | Dresden ZMD Open | B22 Sicilian, Alapin |
| 18. M Mueller vs P Doberitz |
| 0-1 | 20 | 2009 | Dresden ZMD Open | B22 Sicilian, Alapin |
| 19. R Boewer vs M Mueller |
| 1-0 | 32 | 2009 | Dresden ZMD Open | A04 Reti Opening |
| 20. M Mueller vs J Duenzel |
| ½-½ | 13 | 2009 | Dresden ZMD Open | B22 Sicilian, Alapin |
| 21. M Mueller vs E Blomqvist |
| 0-1 | 30 | 2016 | London Chess Classic Open | D17 Queen's Gambit Declined Slav |
| 22. M Mueller vs S Rautela |
| 1-0 | 58 | 2016 | London Chess Classic Open | A45 Queen's Pawn Game |
| 23. D Johnson vs M Mueller |
| ½-½ | 47 | 2016 | London Chess Classic Open | D02 Queen's Pawn Game |
| 24. G Buchicchio vs M Mueller |
| 1-0 | 47 | 2016 | London Chess Classic Open | B10 Caro-Kann |
| 25. M Mueller vs S Wilks |
| 0-1 | 28 | 2016 | London Chess Classic Open | A45 Queen's Pawn Game |
Kibitzing
