| — | Arndt | 0–1 | Graf | Deizisau | Sicilian Defense: Delayed Alapin Variation | |
| — | Arndt | 1–0 | Hertneck | 1. Bundesliga r 14/15 | French Defense: Exchange Variation | |
| — | Wagner | 1–0 | Arndt | Deizisau | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| — | Johansson | 1–0 | Arndt | 1. Bundesliga r 14/15 | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Apr 19, 2026 | Hoi | 0–1 | Arndt | SonFlow Cup 2026 | Queen's Pawn Game: Colle System | |
| Apr 18, 2026 | Arndt | ½–½ | Jalving | SonFlow Cup 2026 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Apr 18, 2026 | Kopylov | ½–½ | Arndt | SonFlow Cup 2026 | Catalan Opening: Open Defense, Classical Line | |
| Apr 18, 2026 | Arndt | 0–1 | Skytte | SonFlow Cup 2026 | Sicilian Defense: French Variation, Westerinen Attack | |
| Apr 17, 2026 | Fries-Nielsen | 1–0 | Arndt | SonFlow Cup 2026 | Zukertort Opening | |
| Nov 2, 2025 | Arndt | 1–0 | Hrbek | Round 7: Arndt, Magnus - Hrbek, Jachym | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Nov 2, 2025 | Zeissig | 0–1 | Arndt | Round 6: Zeissig, Richard - Arndt, Magnus | Four Knights Game: Scotch Variation, Krause Gambit, Leonhardt Defense | |
| Nov 1, 2025 | Arndt | ½–½ | Beeck | Round 5: Arndt, Magnus - Beeck, Mats | Slav Defense: Quiet Variation, Schallopp Defense | |
| Oct 31, 2025 | Arndt | 1–0 | Herrmann | Round 3: Arndt, Magnus - Herrmann, Jakob | Caro-Kann Defense: Endgame Variation | |
| Oct 31, 2025 | Saglam | 0–1 | Arndt | Round 2: Saglam, Buelent - Arndt, Magnus | Nimzo-Indian Defense: Classical Variation | |
| Oct 30, 2025 | Feuerstack | 1–0 | Arndt | Round 4: Feuerstack, Aljoscha - Arndt, Magnus | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Oct 30, 2025 | Arndt | 1–0 | Boerma | Round 1: Arndt, Magnus - Boerma, Daniel | Pirc Defense | |
| Jun 2, 2025 | Arndt | 0–1 | Engel | Round 9: Arndt, Magnus - Engel, Luis | Sicilian Defense: Moscow Variation | |
| Jun 2, 2025 | Wong | 0–1 | Arndt | Round 8: Wong, Jianwen - Arndt, Magnus | Hungarian Opening | |
| May 31, 2025 | Arndt | 1–0 | Weber | Round 6: Arndt, Magnus - Weber, Benedikt | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| May 31, 2025 | Petro Lohvinov | ½–½ | Arndt | Round 5: Petro Lohvinov - Arndt, Magnus | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| May 30, 2025 | Arndt | 1–0 | Tsakonas | Round 4: Arndt, Magnus - Tsakonas, Konstantinos | Nimzo-Indian Defense: Kmoch Variation | |
| May 30, 2025 | Friedrich | ½–½ | Arndt | Round 3: Friedrich, Ricardo - Arndt, Magnus | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| May 29, 2025 | Andreas Kampert | ½–½ | Arndt | Round 1: Andreas Kampert - Arndt, Magnus | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| May 28, 2025 | Arndt | 0–1 | Eljanov | Round 7: Arndt, Magnus - Eljanov, Pavel | Pirc Defense | |
| May 24, 2025 | Zuferi | 1–0 | Arndt | Round 29: Zuferi, Enis - Arndt, Magnus | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| May 24, 2025 | Arndt | 1–0 | Stricker | Round 28: Arndt, Magnus - Stricker, Florian | Queen's Pawn Game: Accelerated London System | |
| May 24, 2025 | Arndt | 1–0 | Joeres | Round 25: Arndt, Magnus - Joeres, Stefan | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| May 24, 2025 | Zwahr | 0–1 | Arndt | Round 26: Zwahr, Paul - Arndt, Magnus | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| May 24, 2025 | Bluebaum | ½–½ | Arndt | Round 24: Bluebaum, Matthias - Arndt, Magnus | Nimzo-Indian Defense: Normal Variation | |
| May 24, 2025 | Arndt | ½–½ | Deuer | Round 23: Arndt, Magnus - Deuer, Marius | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 24, 2025 | Donchenko | 1–0 | Arndt | Round 22: Donchenko, Alexander - Arndt, Magnus | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| May 24, 2025 | Arndt | ½–½ | Moeller | Round 21: Arndt, Magnus - Moeller, Maurin | Sicilian Defense: French Variation | |
| May 24, 2025 | Yelisieiev | 1–0 | Arndt | Round 20: Yelisieiev, Yevhenii - Arndt, Magnus | Indian Defense: Dzindzi-Indian Defense | |
| May 24, 2025 | Arndt | 1–0 | Eichenauer | Round 19: Arndt, Magnus - Eichenauer, Pascal | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| May 24, 2025 | Kopylov | 1–0 | Arndt | Round 18: Kopylov, Michael - Arndt, Magnus | Catalan Opening: Closed | |
| May 24, 2025 | Arndt | 1–0 | Knuedel | Round 17: Arndt, Magnus - Knuedel, Torben | Nimzo-Indian Defense: Normal Variation | |
| May 24, 2025 | Svane | 1–0 | Arndt | Round 16: Svane, Rasmus - Arndt, Magnus | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| May 24, 2025 | Arndt | 0–1 | Schneider | Round 15: Arndt, Magnus - Schneider, Bernd | Modern Defense | |
| May 24, 2025 | Langheinrich | ½–½ | Arndt | Round 14: Langheinrich, Ferenc - Arndt, Magnus | Ruy Lopez: Morphy Defense, Wormald Attack | |
| May 24, 2025 | Arndt | ½–½ | Rosner | Round 13: Arndt, Magnus - Rosner, Jonas | Catalan Opening: Closed Variation, Traditional Variation | |
| May 24, 2025 | Chassard | 0–1 | Arndt | Round 12: Chassard, Cedric - Arndt, Magnus | Catalan Opening: Open Defense, Classical Line | |
| May 24, 2025 | Arndt | 0–1 | Schneider | Round 11: Arndt, Magnus - Schneider, Ilja | Scotch Game: Potter Variation | |
| May 24, 2025 | Barzen | 1–0 | Arndt | Round 10: Barzen, Pascal - Arndt, Magnus | Ruy Lopez: Marshall Attack | |
| May 24, 2025 | Arndt | 1–0 | Richter | Round 9: Arndt, Magnus - Richter, Christian | Scotch Game: Mieses Variation | |
| May 24, 2025 | Svane | 1–0 | Arndt | Round 8: Svane, Frederik - Arndt, Magnus | English Opening: Mikenas-Carls Variation | |
| May 24, 2025 | Arndt | 1–0 | Frischmann | Round 7: Arndt, Magnus - Frischmann, Rick | Queen's Gambit Declined: Chigorin Defense, Main Line | |
| May 24, 2025 | Reichmann | ½–½ | Arndt | Round 6: Reichmann, Hendrik - Arndt, Magnus | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| May 24, 2025 | Arndt | ½–½ | Atoyan | Round 5: Arndt, Magnus - Atoyan, Alberto | Sicilian Defense: Moscow Variation | |
| May 24, 2025 | Nothnagel | 0–1 | Arndt | Round 4: Nothnagel, Marian Can - Arndt, Magnus | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| May 24, 2025 | Arndt | 0–1 | Berchtenbreiter | Round 3: Arndt, Magnus - Berchtenbreiter, Maximilian | Modern Defense | |
| May 24, 2025 | Stein | 1–0 | Arndt | Round 2: Stein, Robert - Arndt, Magnus | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| May 24, 2025 | Arndt | 0–1 | Gloeckler | Round 1: Arndt, Magnus - Gloeckler, Christian | Sicilian Defense: Moscow Variation | |
| May 23, 2025 | Arndt | 1–0 | Holinka | Round 27: Arndt, Magnus - Holinka, Henning | Trompowsky Attack: Classical Defense | |
| Mar 30, 2025 | Arndt | 0–1 | Solodovnichenko | Round 9: Arndt, Magnus - Solodovnichenko, Yuri | ? | |
| Mar 30, 2025 | Rieper | 0–1 | Arndt | Round 8: Rieper, Julian - Arndt, Magnus | ? | |
| Mar 30, 2025 | Arndt | ½–½ | Zysk | Round 7: Arndt, Magnus - Zysk, Robert | ? | |
| Mar 29, 2025 | Fridman | 1–0 | Arndt | Round 6: Fridman, Daniel - Arndt, Magnus | ? | |
| Mar 29, 2025 | Arndt | 1–0 | Lampe | Round 5: Arndt, Magnus - Lampe, Dirk | ? | |
| Mar 29, 2025 | Orlov | 1–0 | Arndt | Round 4: Orlov, Andrey - Arndt, Magnus | ? | |
| Mar 29, 2025 | Arndt | ½–½ | Fromm | Round 3: Arndt, Magnus - Fromm, Marius | ? | |
| Mar 28, 2025 | Arndt | 1–0 | Turp | Round 1: Arndt, Magnus - Turp, Hueseyin | ? | |
| Mar 27, 2025 | Donchenko | 0–1 | Arndt | Round 2: Donchenko, Alexander - Arndt, Magnus | ? | |
| Aug 28, 2023 | Arndt | ½–½ | Bagrationi | WRTC | Modern Defense | |
| Aug 28, 2023 | Arndt | 1–0 | Pak | WRTC | Slav Defense: Modern Line | |
| Aug 28, 2023 | Arndt | 1–0 | Braun | WRTC | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Aug 28, 2023 | Bellahcene | 1–0 | Arndt | WRTC | Indian Defense: Dzindzi-Indian Defense | |
| Aug 27, 2023 | Arndt | 1–0 | Juegel | WRTC | English Defense: Perrin Variation | |
| Aug 27, 2023 | Sidletskyi | 1–0 | Arndt | WRTC | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| Aug 27, 2023 | Vandenbussche | 1–0 | Arndt | WRTC | Scotch Game: Scotch Gambit, Kingside Variation | |
| Aug 27, 2023 | Nechitaylo | 0–1 | Arndt | WRTC | Indian Defense | |
| Aug 26, 2023 | Arndt | 1–0 | Schulz-Knappe | WRTC | Modern Defense | |
| Aug 26, 2023 | Arndt | 1–0 | Berelowitsch | WRTC | French Defense: Burn Variation | |
| Aug 26, 2023 | Martirosyan | 1–0 | Arndt | WRTC | Indian Defense: Seirawan Attack | |
| Aug 26, 2023 | Baskin | 1–0 | Arndt | WRTC | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Aug 20, 2023 | Wachinger | ½–½ | Arndt | German Championship | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| Aug 19, 2023 | Arndt | 1–0 | Nemitz | German Championship | Ruy Lopez: Closed, Martinez Variation | |
| Aug 18, 2023 | Arndt | 1–0 | Schulz | German Championship | Sicilian Defense: Alapin Variation | |
| Aug 18, 2023 | Lagunow | 1–0 | Arndt | German Championship | Ruy Lopez: Marshall Attack, Modern Variation | |
| Aug 17, 2023 | Wichmann | 0–1 | Arndt | German Championship | Bogo-Indian Defense: Vitolins Variation | |
| Aug 16, 2023 | Arndt | * | Herrmann | German Women's CHampionship | ? | |
| Aug 16, 2023 | Arndt | 1–0 | Herrmann | German Championship | Zukertort Opening: Nimzo-Larsen Variation | |
| Aug 16, 2023 | Wong | 1–0 | Arndt | German Championship | Ruy Lopez: Closed | |
| Aug 15, 2023 | Arndt | ½–½ | Ronge | German Championship | East Indian Defense | |
| Apr 30, 2023 | Arndt | 0–1 | Zelcic | Schachbundesliga | Scandinavian Defense: Main Line, Mieses Variation | |
| Apr 29, 2023 | Reuker | 1–0 | Arndt | Schachbundesliga | English Opening: Mikenas-Carls Variation | |
| Apr 2, 2023 | Arndt | 1–0 | Abergel | Schachbundesliga | Bogo-Indian Defense: Grünfeld Variation | |
| Apr 1, 2023 | Mainka | 1–0 | Arndt | Schachbundesliga | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Sep 25, 2022 | Arndt | 1–0 | Krastev | German Championship | Rapid | Sicilian Defense: Delayed Alapin Variation | |
| Sep 25, 2022 | Arndt | 1–0 | Karsay | German Championship | Rapid | Catalan Opening: Closed | |
| Sep 25, 2022 | Reichmann | 0–1 | Arndt | German Championship | Rapid | Rapport-Jobava System | |
| Sep 25, 2022 | Svane | 1–0 | Arndt | German Championship | Rapid | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Sep 24, 2022 | Arndt | 0–1 | Lubbe | German Championship | Rapid | Catalan Opening: Closed | |
| Sep 24, 2022 | Arndt | 1–0 | Feuerstack | German Championship | Rapid | Slav Defense: Modern Line | |
| Sep 24, 2022 | Arndt | ½–½ | Langrock | German Championship | Rapid | Sicilian Defense: French Variation | |
| Sep 24, 2022 | Spiess | 0–1 | Arndt | German Championship | Rapid | Indian Defense: Dzindzi-Indian Defense | |
| Sep 24, 2022 | Kopylov | ½–½ | Arndt | German Championship | Rapid | Catalan Opening: Open Defense, Classical Line | |
| Aug 21, 2022 | Arndt | 0–1 | Zelbel | Deutsche Blitzmeiterschaft 2022 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Aug 21, 2022 | Arndt | 0–1 | Voege | Deutsche Blitzmeiterschaft 2022 | Kangaroo Defense | |
| Aug 21, 2022 | Arndt | 0–1 | Kopylov | Deutsche Blitzmeiterschaft 2022 | Sicilian Defense: Old Sicilian | |
| Aug 21, 2022 | Arndt | ½–½ | Boehm | Deutsche Blitzmeiterschaft 2022 | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
