| 24 jul 2026 | Kracht, Raphael 2329 | Tiarks, Jann-Christian 2205 | ½-½ | B22 Defensa Siciliana: Alapin Variation | German Amateur Chess Championship 2026 (DSAM) | Group A | 35 | Ver |
| 23 jul 2026 | Matthes, Aaron 2296 | Tiarks, Jann-Christian 2205 | ½-½ | A90 Defensa Holandesa: Stonewall Variation, Modern Variation | German Amateur Chess Championship 2026 (DSAM) | Group A | 20 | Ver |
| 30 dic 2025 | Tiarks, Jann-Christian 2222 | Lu, Yunong Elias 2062 | 0-1 | C78 Apertura Española (Ruy López): Morphy Defense, Neo-Arkhangelsk Variation | Bremer Silvester Open 2025 | A | 49 | Ver |
| 29 dic 2025 | Mueer, Sebastian 2215 | Tiarks, Jann-Christian 2222 | 1-0 | D31 Defensa Semieslava: Anti-Noteboom, Stonewall Variation, Portisch Gambit | Bremer Silvester Open 2025 | A | 26 | Ver |
| 29 dic 2025 | Tiarks, Jann-Christian 2222 | Kovalov, Yaroslav 2024 | 1-0 | B24 Defensa Siciliana: Closed | Bremer Silvester Open 2025 | A | 39 | Ver |
| 28 dic 2025 | Schulze, Lara 2335 | Tiarks, Jann-Christian 2222 | 1-0 | B53 Defensa Siciliana: Chekhover Variation | Bremer Silvester Open 2025 | A | 59 | Ver |
| 27 dic 2025 | Tiarks, Jann-Christian 2222 | Pautz, Peter 2019 | 1-0 | B21 Defensa Siciliana: Smith-Morra Gambit | Bremer Silvester Open 2025 | A | 33 | Ver |
| 26 dic 2025 | Tiarks, Jann-Christian 2222 | Kramer, Julian 2487 | ½-½ | B51 Defensa Siciliana: Moscow Variation | Bremer Silvester Open 2025 | A | 46 | Ver |
| 21 dic 2025 | Tiarks, Jann-Christian 2222 | Klaska, Philipp Leon 2322 | 0-1 | B21 Defensa Siciliana: Smith-Morra Gambit | German Amateur Championship 25/26 | Bonn Qualifier 2101 - 2350 | 31 | Ver |