| Mar 22, 2026 | Kellner | 0–1 | Buerge | Reti Amateur Open | ? | |
| Mar 22, 2026 | Bruessow | 1–0 | Kellner | Reti Amateur Open | ? | |
| Mar 22, 2026 | Kellner | 1–0 | Amstalden | Reti Amateur Open | ? | |
| Mar 22, 2026 | Felber | 0–1 | Kellner | Reti Amateur Open | ? | |
| Mar 22, 2026 | Kellner | 0–1 | Cavigelli | Reti Amateur Open | ? | |
| Dec 22, 2025 | Akhvlediani | 1–0 | Kellner | Round 1: Akhvlediani, Irakli - Kellner, Nikolaus | Bogo-Indian Defense: Grünfeld Variation | |
| Nov 4, 2025 | Borek | 1–0 | Kellner | Semmering B-Turnier | Nimzo-Indian Defense: Leningrad Variation | |
| Nov 4, 2025 | Mihok | 1–0 | Kellner | Semmering B-Turnier | Queen's Pawn Game: Colle System | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Borek | 1–0 | Kellner | Semmering B-Turnier | Nimzo-Indian Defense: Leningrad Variation | |
| Nov 4, 2025 | Mihok | 1–0 | Kellner | Semmering B-Turnier | Queen's Pawn Game: Colle System | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Borek | 1–0 | Kellner | Semmering B-Turnier | Nimzo-Indian Defense: Leningrad Variation | |
| Nov 4, 2025 | Mihok | 1–0 | Kellner | Semmering B-Turnier | Queen's Pawn Game: Colle System | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Borek | 1–0 | Kellner | Semmering B-Turnier | Nimzo-Indian Defense: Leningrad Variation | |
| Nov 4, 2025 | Mihok | 1–0 | Kellner | Semmering B-Turnier | Queen's Pawn Game: Colle System | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Borek | 1–0 | Kellner | Semmering B-Turnier | Nimzo-Indian Defense: Leningrad Variation | |
| Nov 4, 2025 | Mihok | 1–0 | Kellner | Semmering B-Turnier | Queen's Pawn Game: Colle System | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Borek | 1–0 | Kellner | Semmering B-Turnier | Nimzo-Indian Defense: Leningrad Variation | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Borek | 1–0 | Kellner | Semmering B-Turnier | Nimzo-Indian Defense: Leningrad Variation | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Schoenangerer | 1–0 | Kellner | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Nov 4, 2025 | Kellner | 1–0 | Moenius | Semmering B-Turnier | Zukertort Opening: Kingside Fianchetto | |
| Oct 23, 2025 | Souleidis | 1–0 | Kellner | The Big Greek Simultan im Hotel am Brillantengrund, Wien | Latvian Gambit: Greco Variation | |
| Oct 12, 2025 | Pauw | 1–0 | Kellner | Round 9: Pauw, Martijn - Kellner, Nikolaus | French Defense: Steinitz Variation | |
| Oct 11, 2025 | Kellner | 1–0 | Pipitone | Round 8: Kellner, Nikolaus - Pipitone, Antonio | Zukertort Opening: Quiet System | |
| Oct 10, 2025 | Masio | 1–0 | Kellner | Round 7: Masio, Andreas - Kellner, Nikolaus | French Defense: King's Indian Attack | |
| Oct 9, 2025 | Kellner | 0–1 | Salerno | Round 6: Kellner, Nikolaus - Salerno, Christian | Zukertort Opening: Quiet System | |
| Oct 9, 2025 | Zayed | 0–1 | Kellner | Round 5: Zayed, Ali Al-hamed - Kellner, Nikolaus | French Defense: King's Indian Attack | |
| Oct 7, 2025 | Kellner | 1–0 | Smith | Round 4: Kellner, Nikolaus - Smith, Chris P | Zukertort Opening: Lisitsyn Gambit | |
| Oct 6, 2025 | Marentini | 1–0 | Kellner | Round 3: Marentini, Marcel - Kellner, Nikolaus | Tarrasch Defense: Classical Variation | |
| Oct 5, 2025 | Kellner | 1–0 | Paredes Guevara | Round 2: Kellner, Nikolaus - Paredes Guevara, Jesus Enrique | Zukertort Opening | |
| Oct 5, 2025 | Dunnington | 1–0 | Kellner | Round 1: Dunnington, Angus J - Kellner, Nikolaus | Zukertort Opening | |
| Sep 21, 2025 | Stasiv | 0–1 | Kellner | Wiener LM 2025 Open | ? | |
| Sep 19, 2025 | Lappe | 1–0 | Kellner | Wiener LM 2025 Open | French Defense: Exchange Variation | |
| Sep 17, 2025 | Buchhas | 1–0 | Kellner | Wiener LM 2025 Open | Kangaroo Defense | |
| Sep 16, 2025 | Kellner | 0–1 | Armeniakos | Wiener LM 2025 Open | Zukertort Opening | |
| Sep 15, 2025 | Karelina | 1–0 | Kellner | Wiener LM 2025 Open | French Defense: King's Indian Attack | |
| Sep 14, 2025 | Kellner | 1–0 | Fruehauf | Wiener LM 2025 Open | Zukertort Opening: Quiet System | |
| Oct 13, 2024 | Buratti | 1–0 | Kellner | 46th International Chess Open Citta di Arco - A | French Defense: Two Knights Variation | |
| Oct 12, 2024 | Kellner | 1–0 | Profumo | 46th International Chess Open Citta di Arco - A | Zukertort Opening | |
| Oct 11, 2024 | Roversi | 0–1 | Kellner | Arco A | French Defense: King's Indian Attack | |
| Oct 10, 2024 | Kellner | 0–1 | May | Arco A | Zukertort Opening: Quiet System | |
| Oct 9, 2024 | Hansen | 0–1 | Kellner | Arco A | Nimzo-Larsen Attack | |
| Oct 8, 2024 | Kellner | 0–1 | Renaud | Arco A | English Opening: Agincourt Defense | |
| Oct 7, 2024 | Buglisi | 1–0 | Kellner | 46th International Chess Open Citta di Arco - A | Kangaroo Defense | |
| Oct 6, 2024 | Kellner | 1–0 | Burri | Arco A | Queen's Pawn Game: Chigorin Variation | |
| Oct 5, 2024 | De Santis | 1–0 | Kellner | 46th International Chess Open Citta di Arco - A | Nimzo-Larsen Attack | |
