| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. R Mueller vs S Siebrecht |
| 1-0 | 55 | 2009 | German Championship | E76 King's Indian, Four Pawns Attack |
| 27. D Hausrath vs R Mueller |
| 1-0 | 31 | 2009 | German Championship | A49 King's Indian, Fianchetto without c4 |
| 28. R Mueller vs T Wippermann |
| ½-½ | 32 | 2009 | German Championship | E04 Catalan, Open, 5.Nf3 |
| 29. U Von Herman vs R Mueller |
| ½-½ | 28 | 2009 | German Championship | A57 Benko Gambit |
| 30. R Mueller vs H Vatter |
| ½-½ | 57 | 2009 | German Championship | E15 Queen's Indian |
| 31. H Tabatt vs R Mueller |
| 1-0 | 31 | 2009 | German Championship | E91 King's Indian |
| 32. R Mueller vs J Hirneise |
| 1-0 | 39 | 2009 | German Championship | E76 King's Indian, Four Pawns Attack |
| 33. H Bastian vs R Mueller |
| 1-0 | 37 | 2009 | German Championship | C02 French, Advance |
| 34. R Mueller vs M Strache |
| ½-½ | 55 | 2009 | German Championship | D20 Queen's Gambit Accepted |
| 35. R Mueller vs Khenkin |
| 0-1 | 49 | 2015 | German Championship | D11 Queen's Gambit Declined Slav |
| 36. M Scherer vs R Mueller |
| ½-½ | 59 | 2015 | German Championship | A15 English |
| 37. R Mueller vs A Wild |
| 0-1 | 31 | 2015 | German Championship | D17 Queen's Gambit Declined Slav |
| 38. N Mueller vs R Mueller |
| 1-0 | 41 | 2015 | German Championship | B76 Sicilian, Dragon, Yugoslav Attack |
| 39. R Mueller vs E Zuferi |
| ½-½ | 49 | 2015 | German Championship | D79 Neo-Grunfeld, 6.O-O, Main line |
| 40. D Riegler vs R Mueller |
| 1-0 | 34 | 2015 | German Championship | A70 Benoni, Classical with 7.Nf3 |
| 41. R Mueller vs S Tschann |
| 0-1 | 40 | 2015 | German Championship | E06 Catalan, Closed, 5.Nf3 |
| 42. R Mueller vs M Weber |
| 1-0 | 42 | 2015 | German Championship | D97 Grunfeld, Russian |
| 43. M Liedtke vs R Mueller |
| 1-0 | 36 | 2015 | German Championship | B22 Sicilian, Alapin |
| 44. A Zubarev vs R Mueller |
| 1-0 | 40 | 2016 | 28th Staufer-Open | A30 English, Symmetrical |
| 45. J van Foreest vs R Mueller |
| 1-0 | 47 | 2016 | 28th Staufer-Open | C05 French, Tarrasch |
| 46. R Mueller vs N Miezis |
| 0-1 | 38 | 2017 | 29th Staufer-Open | E00 Queen's Pawn Game |
| 47. R Mueller vs J Sodoma |
| 1-0 | 83 | 2018 | Dublin Irish Easter IM | A83 Dutch, Staunton Gambit |
| 48. P Roberson vs R Mueller |
| 1-0 | 34 | 2018 | European Club Cup | B76 Sicilian, Dragon, Yugoslav Attack |
| 49. R Mueller vs J S Thybo |
| 0-1 | 24 | 2018 | European Club Cup | E10 Queen's Pawn Game |
| 50. M Corvi vs R Mueller |
| ½-½ | 26 | 2018 | European Club Cup | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
Kibitzing
