| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K Mueller vs Khalifman |
| 0-1 | 58 |
1992 |
GER-CupT f Frankfurt-Hamburg [1] [Ernst,T] | B76 Sicilian, Dragon, Yugoslav Attack |
| 2. K Mueller vs I Stohl |
| 1-0 | 41 |
1992 |
Munich op9192 | B86 Sicilian, Fischer-Sozin Attack |
| 3. K Mueller vs Hort |
| 0-1 | 31 |
1994 |
GER-CupT | B41 Sicilian, Kan |
| 4. K Mueller vs Christiansen |
| 1-0 | 71 |
1996 |
Bundesliga /97 | B32 Sicilian |
| 5. K Mueller vs C Lutz |
| ½-½ | 52 |
1997 |
GER-ch | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 6. K Mueller vs E Gisbrecht |
| 1-0 | 55 |
1997 |
GER-ch | B29 Sicilian, Nimzovich-Rubinstein |
| 7. K Mueller vs A Hennings |
| ½-½ | 40 |
1997 |
GER-ch | B33 Sicilian |
| 8. K Mueller vs T Luther |
| 1-0 | 46 |
1997 |
GER-ch | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 9. K Mueller vs Wahls |
 | 0-1 | 53 |
1997 |
GER-ch | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 10. K Mueller vs P Enders |
| ½-½ | 26 |
1998 |
Bundesliga -9 | B89 Sicilian |
| 11. K Mueller vs A Ziegler |
| 1-0 | 41 |
1998 |
Bundesliga 9899 | B32 Sicilian |
| 12. K Mueller vs D King |
| ½-½ | 54 |
1999 |
Bundesliga 1998/99, Germany | B90 Sicilian, Najdorf |
| 13. K Mueller vs A Ziegler |
| 1-0 | 41 |
1999 |
Bundesliga 1998/99, Germany | B33 Sicilian |
| 14. K Mueller vs B Voekler |
| ½-½ | 52 |
2000 |
German Chess Championships | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 15. K Mueller vs Naiditsch |
| 1-0 | 39 |
2001 |
ch-GER | B27 Sicilian |
| 16. K Mueller vs K Bischoff |
| ½-½ | 25 |
2001 |
TCh-AUT -2 | B30 Sicilian |
| 17. K Mueller vs C Lutz |
| 0-1 | 46 |
2001 |
ch-GER | B48 Sicilian, Taimanov Variation |
| 18. K Mueller vs Ulf Andersson |
| ½-½ | 47 |
2001 |
Bundesliga -2 | B46 Sicilian, Taimanov Variation |
| 19. K Mueller vs Wahls |
| 1-0 | 49 |
2001 |
ch-GER | B43 Sicilian, Kan, 5.Nc3 |
| 20. K Mueller vs M Brodsky |
| ½-½ | 17 |
2001 |
IHEM | B32 Sicilian |
| 21. K Mueller vs H Knuth |
| 1-0 | 39 |
2001 |
ch-GER | B45 Sicilian, Taimanov |
| 22. K Mueller vs V Atlas |
| ½-½ | 46 |
2001 |
Tch-AUT 2000-01 | B42 Sicilian, Kan |
| 23. K Mueller vs Z Almasi |
| ½-½ | 9 |
2001 |
TCh-AUT -2 | B46 Sicilian, Taimanov Variation |
| 24. K Mueller vs Movsesian |
| 0-1 | 40 |
2002 |
TCh-AUT 2001-2 | B48 Sicilian, Taimanov Variation |
| 25. K Mueller vs V Teterev |
| 0-1 | 60 |
2003 |
European Clubs Cup (Men) | B47 Sicilian, Taimanov (Bastrikov) Variation |
