| Apr 3, 2026 | Fischer | 1–0 | Kulgemeyer | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Queen's Gambit Declined | |
| Apr 2, 2026 | Kulgemeyer | ½–½ | Schmidt | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Rapport-Jobava System | |
| Apr 1, 2026 | Kulgemeyer | ½–½ | Stoffers | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Indian Defense | |
| Apr 1, 2026 | Struebel | 0–1 | Kulgemeyer | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Mar 31, 2026 | Kulgemeyer | 0–1 | Placke | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Rapport-Jobava System | |
| Mar 30, 2026 | Klebsch | 1–0 | Kulgemeyer | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Mar 30, 2026 | Kulgemeyer | 1–0 | Czubek | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | French Defense: Classical Variation, Steinitz Variation | |
| Mar 29, 2026 | Rehn | ½–½ | Kulgemeyer | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Mar 28, 2026 | Kulgemeyer | 0–1 | Krueger | Landesjugendeinzelmeisterschaft in Niedersachsen U16 | Rapport-Jobava System | |
| Jan 5, 2026 | Marten Rehn | 1–0 | Kulgemeyer | Runde 7: Marten Rehn - Kulgemeyer, Justus | Polish Opening, with d5 | |
| Jan 4, 2026 | Kulgemeyer | ½–½ | Leppin | Runde 6: Kulgemeyer, Justus - Leppin, Mattis | Rapport-Jobava System | |
| Jan 4, 2026 | Debus | 0–1 | Kulgemeyer | Runde 5: Debus, Ilja - Kulgemeyer, Justus | English Opening: King's English Variation | |
| Jan 3, 2026 | Kulgemeyer | 0–1 | Schaefer | Runde 4: Kulgemeyer, Justus - Schaefer, Immanuel | Rapport-Jobava System | |
| Jan 2, 2026 | Kulgemeyer | 1–0 | Buergener | Runde 2: Kulgemeyer, Justus - Buergener, Axel | Rapport-Jobava System | |
| Jan 2, 2026 | Hohlbein | 0–1 | Kulgemeyer | Runde 1: Hohlbein, Alexander - Kulgemeyer, Justus | Sicilian Defense: Smith-Morra Gambit | |
| Dec 28, 2025 | Matteo Joel Lankenau | 0–1 | Kulgemeyer | Runde 3: Matteo Joel Lankenau - Kulgemeyer, Justus | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Nov 1, 2025 | Kulgemeyer | 1–0 | Visschers | Runde 7: Kulgemeyer, Justus - Visschers, Fred | Sicilian Defense: French Variation, Open | |
| Nov 1, 2025 | Schroeder | ½–½ | Kulgemeyer | Runde 6: Schroeder, Harm - Kulgemeyer, Justus | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Nov 1, 2025 | Kulgemeyer | 1–0 | Seeber | Runde 5: Kulgemeyer, Justus - Seeber, Helmut | Rapport-Jobava System | |
| Oct 31, 2025 | Kulgemeyer | 0–1 | Laun | Runde 4: Kulgemeyer, Justus - Laun, Kurt | Rapport-Jobava System | |
| Oct 31, 2025 | Gulamov | 1–0 | Kulgemeyer | Runde 3: Gulamov, Elmir - Kulgemeyer, Justus | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Oct 30, 2025 | Kulgemeyer | 1–0 | Meier | Runde 2: Kulgemeyer, Justus - Meier, Paul | Rapport-Jobava System | |
| Oct 30, 2025 | Lipp | ½–½ | Kulgemeyer | Runde 1: Lipp, Johannes - Kulgemeyer, Justus | English Opening: King's English Variation | |
| Jun 14, 2025 | Hladeniuk | 1–0 | Kulgemeyer | ODJM B 2025 | Slav Defense: Exchange Variation | |
| Jun 13, 2025 | Kulgemeyer | 1–0 | de Cauter | ODJM B 2025 | Rapport-Jobava System | |
| Jun 12, 2025 | Meller | 0–1 | Kulgemeyer | ODJM B 2025 | Queen's Pawn Game: Accelerated London System | |
| Jun 11, 2025 | Kulgemeyer | 0–1 | Rabus | ODJM B 2025 | Queen's Pawn Game | |
| Jun 11, 2025 | Kulgemeyer | 0–1 | Kandora | ODJM B 2025 | Indian Defense | |
| Jun 10, 2025 | Berger | 0–1 | Kulgemeyer | ODJM B 2025 | Bird Opening: Dutch Variation | |
| Jun 9, 2025 | Schille | 1–0 | Kulgemeyer | ODJM B 2025 | Sicilian Defense: Taimanov Variation, Szén Variation | |
| Jun 8, 2025 | Kulgemeyer | 0–1 | Jones | ODJM B 2025 | Rapport-Jobava System | |
| Jun 8, 2025 | Wilke | 1–0 | Kulgemeyer | ODJM B 2025 | Sicilian Defense: Alapin Variation | |
| Apr 18, 2025 | Kulgemeyer | ½–½ | Polikarpov | Runde 9: Kulgemeyer, Justus - Polikarpov, Matvii | Rapport-Jobava System | |
| Apr 17, 2025 | Matthes Britz | 0–1 | Kulgemeyer | Runde 8: Matthes Britz - Kulgemeyer, Justus | Semi-Slav Defense: Romih Variation | |
| Apr 16, 2025 | Kulgemeyer | 0–1 | Rinke | Runde 7: Kulgemeyer, Justus - Rinke, Alexander | Rapport-Jobava System | |
| Apr 16, 2025 | Kulgemeyer | 1–0 | Freimuth | Runde 6: Kulgemeyer, Justus - Freimuth, Julius | Rapport-Jobava System | |
| Apr 15, 2025 | Lueders Vega | 1–0 | Kulgemeyer | Runde 5: Lueders Vega, Iago Ernst - Kulgemeyer, Justus | Sicilian Defense: Alapin Variation | |
| Apr 14, 2025 | Placke | 1–0 | Kulgemeyer | Runde 4: Placke, Frederick - Kulgemeyer, Justus | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Apr 13, 2025 | Kulgemeyer | ½–½ | Nicolas Kohrt | Runde 3: Kulgemeyer, Justus - Nicolas Kohrt | Indian Defense | |
| Apr 13, 2025 | Alex Nilkamhaeng | ½–½ | Kulgemeyer | Runde 2: Alex Nilkamhaeng - Kulgemeyer, Justus | Rapport-Jobava System | |
| Apr 12, 2025 | Kulgemeyer | 0–1 | Buergener | Runde 1: Kulgemeyer, Justus - Buergener, Richard | Rapport-Jobava System | |
| Jan 5, 2025 | Leonidas Rueckinger | 0–1 | Kulgemeyer | Round 7: Leonidas Rueckinger - Kulgemeyer, Justus | English Opening: Symmetrical Variation | |
| Jan 4, 2025 | Kulgemeyer | 1–0 | Prigandt | Round 6: Kulgemeyer, Justus - Prigandt, Junis | Indian Defense | |
| Jan 4, 2025 | Daisy Mariamidze | 0–1 | Kulgemeyer | Round 5: Daisy Mariamidze - Kulgemeyer, Justus | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Jan 3, 2025 | Kulgemeyer | 1–0 | Lambrecht | Round 4: Kulgemeyer, Justus - Lambrecht, Harald | Indian Defense | |
| Jan 3, 2025 | Weber | ½–½ | Kulgemeyer | Round 3: Weber, Hans-Joachim - Kulgemeyer, Justus | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jan 2, 2025 | Kulgemeyer | 0–1 | Berger | Round 2: Kulgemeyer, Justus - Berger, Johanna | Dutch Defense: Raphael Variation | |
| Jan 2, 2025 | ter Stal | 0–1 | Kulgemeyer | Round 1: ter Stal, Danja Yvonne - Kulgemeyer, Justus | English Opening: Symmetrical Variation | |
| May 25, 2024 | Kulgemeyer | 1–0 | Peglau | ODJM C 2024 | Rapport-Jobava System | |
| May 24, 2024 | Hellmann | ½–½ | Kulgemeyer | ODJM C 2024 | Queen's Gambit Declined: Marshall Defense | |
| May 23, 2024 | Kulgemeyer | 0–1 | Salim | ODJM C 2024 | Indian Defense | |
| May 22, 2024 | Kulgemeyer | 0–1 | Polster | ODJM C 2024 | Rapport-Jobava System | |
| May 22, 2024 | Luible | 0–1 | Kulgemeyer | ODJM C 2024 | Sicilian Defense: Taimanov Variation, Szén Variation | |
| May 21, 2024 | Hantke | ½–½ | Kulgemeyer | ODJM C 2024 | Queen's Gambit Declined: Marshall Defense | |
| May 20, 2024 | Kulgemeyer | 1–0 | Schmidt | ODJM C 2024 | Rapport-Jobava System | |
| May 19, 2024 | Kulgemeyer | 1–0 | Sniegowski | ODJM C 2024 | Pirc Defense | |
| May 19, 2024 | Winklmann | 0–1 | Kulgemeyer | ODJM C 2024 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Nov 3, 2024 | Kulgemeyer | ½–½ | Hutwalker | Round 7: Kulgemeyer, Justus - Hutwalker, Michael | Indian Defense | |
| Nov 2, 2024 | Kulgemeyer | ½–½ | Kleemann | Round 5: Kulgemeyer, Justus - Kleemann, Karl | Indian Defense | |
| Nov 2, 2024 | Krause | 0–1 | Kulgemeyer | Round 6: Krause, Volker - Kulgemeyer, Justus | Queen's Pawn Game: London System | |
| Nov 1, 2024 | Kulgemeyer | 0–1 | Pawlus | Round 4: Kulgemeyer, Justus - Pawlus, Daniel | Rapport-Jobava System | |
| Nov 1, 2024 | Tietjen | 1–0 | Kulgemeyer | Round 3: Tietjen, Joshua - Kulgemeyer, Justus | Sicilian Defense: Alapin Variation | |
| Oct 31, 2024 | Kulgemeyer | 1–0 | Meyer | Round 2: Kulgemeyer, Justus - Meyer, Frank | Rapport-Jobava System | |
| Oct 31, 2024 | Jablonski | 1–0 | Kulgemeyer | Round 1: Jablonski, Ture - Kulgemeyer, Justus | Slav Defense: Quiet Variation, Schallopp Defense | |