| 9 ago 2026 | Holtwessels, Jan 2130 | Bangert, Jonas 2104 | 1-0 | B13 Defensa Caro-Kann: Exchange Variation, Rubinstein Variation | 5. Kurt Pape-Open | A-Open | 23 | Ver |
| 8 ago 2026 | Wilmink, Anna 2022 | Holtwessels, Jan 2130 | 0-1 | B20 Defensa Siciliana | 5. Kurt Pape-Open | A-Open | 48 | Ver |
| 8 ago 2026 | Holtwessels, Jan 2130 | Muendoerfer, Sebastian 2037 | ½-½ | C41 Defensa Philidor: Lion Variation | 5. Kurt Pape-Open | A-Open | 29 | Ver |
| 7 ago 2026 | Jacobi, Felix-Hagen 2056 | Holtwessels, Jan 2130 | ½-½ | C24 Apertura de Alfil: Vienna Hybrid | 5. Kurt Pape-Open | A-Open | 36 | Ver |
| 29 jul 2026 | Mester, Philipp 2299 | Holtwessels, Jan 2130 | 1-0 | A05 Apertura Zukertort: Quiet System | 5. Kurt Pape-Open | A-Open | 53 | Ver |
| 7 jun 2026 | Grigorian, Spartak 2418 | Holtwessels, Jan 2078 | 0-1 | D30 Gambito de Dama rehusado | Pokalmannschaftsmeisterschaft Niedersachsen/Bremen | 41 | Ver |
| 6 jun 2026 | Holtwessels, Jan 2078 | Koch, Yannick 2075 | 1-0 | B28 Defensa Siciliana: O'Kelly Variation, Réti System | Pokalmannschaftsmeisterschaft Niedersachsen/Bremen | 44 | Ver |
| 6 jun 2026 | Peters, Frank 2035 | Holtwessels, Jan 2078 | 0-1 | A34 Apertura Inglesa: Symmetrical Variation, Rubinstein Variation | Pokalmannschaftsmeisterschaft Niedersachsen/Bremen | 36 | Ver |
| 27 may 2026 | Amini, Yusuf 2065 | Holtwessels, Jan 2078 | 1-0 | E06 Apertura Catalana: Closed | DEM U16 2026 | 78 | Ver |
| 27 may 2026 | Holtwessels, Jan 2078 | Bangert, Jonas 2130 | 1-0 | B12 Defensa Caro-Kann: Advance Variation, Bayonet Attack | DEM U16 2026 | 54 | Ver |
| 26 may 2026 | Fischer, Lorenz 2024 | Holtwessels, Jan 2078 | 0-1 | D05 Apertura de Peón de Dama: Colle System, Traditional Colle | DEM U16 2026 | 55 | Ver |
| 25 may 2026 | Holtwessels, Jan 2078 | Dodul, Arthur 2016 | 0-1 | C22 Apertura del Centro: Hall Variation | DEM U16 2026 | 58 | Ver |
| 24 may 2026 | Holtwessels, Jan 2078 | Freimuth, Julius 2040 | ½-½ | A46 Yusupov-Rubinstein System | DEM U16 2026 | 43 | Ver |
| 27 mar 2026 | Holtwessels, Jan 2052 | Muendoerfer, Sebastian 2065 | ½-½ | B12 Defensa Caro-Kann: Advance Variation, Van der Wiel Attack | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | 24 | Ver |
| 4 ene 2026 | Holtwessels, Jan 2062 | Tonndorf, Matthias 2163 | 0-1 | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | Runde 6: Holtwessels, Jan - Tonndorf, Matthias | 40 | Ver |
| 4 ene 2026 | Scheffner, Jarno 2010 | Holtwessels, Jan 2062 | 0-1 | C60 Apertura Española (Ruy López): Fianchetto Defense | Runde 5: Scheffner, Jarno - Holtwessels, Jan | 43 | Ver |
| 3 ene 2026 | Holtwessels, Jan 2062 | Stelmaszyk, Nico 2360 | 0-1 | B07 Defensa Pirc: Kholmov System | Runde 4: Holtwessels, Jan - Stelmaszyk, Nico | 46 | Ver |
| 3 ene 2026 | Sieber, Bert 2167 | Holtwessels, Jan 2062 | 0-1 | E48 Defensa Nimzoindia: Normal Variation, Classical Defense | Runde 3: Sieber, Bert - Holtwessels, Jan | 43 | Ver |
| 2 ene 2026 | Holtwessels, Jan 2062 | Reimer, Philip 2226 | 0-1 | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | Runde 2: Holtwessels, Jan - Reimer, Philip | 100 | Ver |
| 2 ene 2026 | Polster, Christian 2257 | Holtwessels, Jan 2062 | ½-½ | C55 Apertura Italiana: Two Knights Defense, Modern Bishop's Opening | Runde 1: Polster, Christian - Holtwessels, Jan | 63 | Ver |