| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. S Giese vs M Gentemann |
| ½-½ | 59 | 2005 | Werther Schloss op-A 11th | A40 Queen's Pawn Game |
| 27. M Gentemann vs S Niendieker |
| 1-0 | 41 | 2005 | Werther Schloss op-A 11th | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 28. T Schwarz vs M Gentemann |
| ½-½ | 12 | 2005 | Werther Schloss op-A 11th | D37 Queen's Gambit Declined |
| 29. M Gentemann vs S Ovsejevitsch |
| ½-½ | 38 | 2007 | Werther Schloss op-A 13rd | C44 King's Pawn Game |
| 30. M Gentemann vs O Mussgnug |
| 1-0 | 32 | 2007 | Werther Schloss op-A 13rd | B33 Sicilian |
| 31. M Budzyn vs M Gentemann |
| ½-½ | 17 | 2007 | Werther Schloss op-A 13rd | C02 French, Advance |
| 32. M Gentemann vs L Rojas Keim |
| 0-1 | 57 | 2007 | Werther Schloss op-A 13rd | C07 French, Tarrasch |
| 33. S Grochtmann vs M Gentemann |
| ½-½ | 30 | 2007 | Werther Schloss op-A 13rd | C05 French, Tarrasch |
| 34. D Johnen vs M Gentemann |
| 0-1 | 60 | 2007 | Werther Schloss op-A 13rd | C12 French, McCutcheon |
| 35. M Gentemann vs M Weimann |
| ½-½ | 5 | 2007 | Werther Schloss op-A 13rd | B41 Sicilian, Kan |
| 36. M Gentemann vs F Meissner |
| 0-1 | 46 | 2016 | 2nd Bundesliga Nord -17 | B90 Sicilian, Najdorf |
| 37. M Gentemann vs O Steffens |
| 1-0 | 28 | 2016 | 2nd Bundesliga Nord -17 | C00 French Defense |
| 38. R Szyszylo vs M Gentemann |
| 0-1 | 39 | 2017 | 2nd Bundesliga Nord 2016-17 | B90 Sicilian, Najdorf |
| 39. M Gentemann vs A Plueg |
| 0-1 | 41 | 2017 | 2nd Bundesliga Nord 2016-17 | B12 Caro-Kann Defense |
| 40. C Michna vs M Gentemann |
| 1-0 | 44 | 2017 | 2nd Bundesliga Nord 2016-17 | B20 Sicilian |
| 41. S Brettschneider vs M Gentemann |
| 1-0 | 62 | 2017 | 2nd Bundesliga Nord 2016-17 | A07 King's Indian Attack |
| 42. M Budzyn vs M Gentemann |
| 0-1 | 71 | 2017 | 2nd Bundesliga Nord 2016-17 | B22 Sicilian, Alapin |
| 43. M Gentemann vs T Guth |
| 1-0 | 53 | 2017 | 2nd Bundesliga Nord 2016-17 | C05 French, Tarrasch |
| 44. E Romanov vs M Gentemann |
| 1-0 | 54 | 2018 | ZMDI Open | E04 Catalan, Open, 5.Nf3 |
| 45. M Gentemann vs Efimenko |
| 0-1 | 29 | 2019 | Dresden Open | A13 English |
| 46. M Gentemann vs M Weishaeutel |
| ½-½ | 27 | 2022 | 49th Sparkassen Open | A58 Benko Gambit |
| 47. A Lagunow vs M Gentemann |
| ½-½ | 70 | 2023 | 2nd Bundesliga Nord 22-23 | D35 Queen's Gambit Declined |
| 48. M Gentemann vs A Breier |
| ½-½ | 47 | 2023 | 2nd Bundesliga Nord 22-23 | E00 Queen's Pawn Game |
| 49. M Gentemann vs A Juhasz |
| ½-½ | 28 | 2025 | Grenke Chess Open | A21 English |
| 50. M Gentemann vs B Hagner |
| 0-1 | 25 | 2025 | Grenke Chess Open | A22 English |
Kibitzing
