| Apr 19, 2026 | Schank | 0–1 | Arndt | new tournament description | French Defense: Advance Variation | |
| Apr 3, 2026 | Janning | 0–1 | Arndt | Landesjugendeinzelmeisterschaft in Niedersachsen Open | Slav Defense: Three Knights Variation | |
| Apr 2, 2026 | Arndt | 1–0 | Anlauf | Landesjugendeinzelmeisterschaft in Niedersachsen Open | Queen's Pawn Game: London System | |
| Apr 1, 2026 | Fize | 1–0 | Arndt | Landesjugendeinzelmeisterschaft in Niedersachsen Open | Rapport-Jobava System | |
| Apr 1, 2026 | Thiele | * | Arndt | Landesjugendeinzelmeisterschaft in Niedersachsen Open | Nimzo-Indian Defense: Leningrad Variation | |
| Mar 31, 2026 | Arndt | 0–1 | Hertrampf | Landesjugendeinzelmeisterschaft in Niedersachsen Open | Queen's Pawn Game: London System | |
| Mar 30, 2026 | Arndt | 1–0 | Ewers | Landesjugendeinzelmeisterschaft in Niedersachsen Open | King's Indian Defense: Semi-Averbakh System | |
| Mar 29, 2026 | Held | 0–1 | Arndt | Landesjugendeinzelmeisterschaft in Niedersachsen Open | London System | |
| Mar 28, 2026 | Arndt | 1–0 | Timm | Landesjugendeinzelmeisterschaft in Niedersachsen Open | Queen's Pawn Game | |
| Mar 27, 2026 | Große Rammelkamp | 1–0 | Arndt | Landesjugendeinzelmeisterschaft in Niedersachsen Open | English Opening: Mikenas-Carls Variation | |
| Apr 12, 2025 | Luelker | 1–0 | Arndt | Runde 1: Luelker, Felix - Arndt, Alex | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| May 25, 2024 | Arndt | 1–0 | Sniegowski | ODJM C 2024 | Queen's Gambit Declined: Marshall Defense | |
| May 24, 2024 | Schwarzfischer | 1–0 | Arndt | ODJM C 2024 | Caro-Kann Defense: Maróczy Variation | |
| May 23, 2024 | Arndt | 0–1 | Schoenknecht | ODJM C 2024 | Queen's Pawn Game: Stonewall Attack | |
| May 22, 2024 | Arndt | 1–0 | Czubek | ODJM C 2024 | Queen's Pawn Game: Stonewall Attack | |
| May 22, 2024 | Krueger | ½–½ | Arndt | ODJM C 2024 | Indian Defense: West Indian Defense | |
| May 21, 2024 | Muhl | 1–0 | Arndt | ODJM C 2024 | French Defense: Schlechter Variation | |
| May 20, 2024 | Arndt | 1–0 | Hempel | ODJM C 2024 | Indian Defense | |
| May 19, 2024 | Arndt | ½–½ | Czubek | ODJM C 2024 | Indian Defense | |
| May 19, 2024 | Hantke | 1–0 | Arndt | ODJM C 2024 | French Defense: Exchange Variation, Monte Carlo Variation | |
| — | Arndt | ½–½ | Polackova | EUYCC 2025 - U14 | Queen's Pawn Game: London System | |
| — | Arndt | 1–0 | Voronova | EUYCC 2025 - U14 | Queen's Pawn Game: Stonewall Attack | |
| — | Arndt | 0–1 | Debowska | EUYCC 2025 - U14 | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| — | Arndt | 0–1 | Chmelikova | EUYCC 2025 - U14 | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| — | Arndt | 0–1 | Janouskova | EUYCC 2025 - U14 | Dutch Defense: Stonewall Variation, Modern Variation | |
| — | Plechacek | 1–0 | Arndt | EUYCC 2024 - U14 | Rapport-Jobava System | |
| — | Myronova | 1–0 | Arndt | EUYCC 2025 - U14 | Indian Defense | |
| — | Kozakova | 0–1 | Arndt | EUYCC 2025 - U14 | French Defense: Exchange Variation, Monte Carlo Variation | |
| — | Sutarik | 0–1 | Arndt | EUYCC 2025 - U14 | French Defense: Advance Variation, Main Line | |
