| — | Chittka | ½–½ | Milat | Grenke Open | East Indian Defense | |
| — | Chittka | ½–½ | Nagel | Grenke Open | Queen's Pawn Game: London System, with e6 | |
| — | Fischer | ½–½ | Chittka | Grenke Open | Queen's Pawn Game: London System | |
| Apr 6, 2026 | Chittka | 0–1 | Ondersteijn | Grenke Chess Festival 2026 Open | Bogo-Indian Defense: Grünfeld Variation | |
| Apr 5, 2026 | Guliyev | 1–0 | Chittka | Grenke Chess Festival 2026 Open | Philidor Defense: Lion Variation | |
| Apr 4, 2026 | Chittka | ½–½ | Colbow | Grenke Chess Festival 2026 Open | Queen's Gambit Declined: Harrwitz Attack | |
| Apr 4, 2026 | Baenziger | ½–½ | Chittka | Grenke Chess Festival 2026 Open | Philidor Defense: Lion Variation | |
| Apr 3, 2026 | Chittka | ½–½ | Schmidek | Grenke Chess Festival 2026 Open | Queen's Gambit Declined: Janowski Variation | |
| Feb 12, 2026 | Chittka | 0–1 | Pranav Anand | Round 2: Chittka, Julius - Pranav Anand | Indian Defense: London System | |
| Jan 6, 2026 | Marynychenko | ½–½ | Chittka | 36. Staufer Open 2026 A | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Jan 5, 2026 | Chittka | ½–½ | Kocak | 36. Staufer Open 2026 A | Queen's Pawn Game: London System | |
| Jan 5, 2026 | Mohamed Anees M | 1–0 | Chittka | 36. Staufer Open 2026 A | Zukertort Opening | |
| Jan 4, 2026 | Chittka | ½–½ | Petrovskiy | 36. Staufer Open 2026 A | King's Indian Defense: Fianchetto Variation | |
| Jan 4, 2026 | Redzisz | 0–1 | Chittka | 36. Staufer Open 2026 A | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jan 3, 2026 | Chittka | 1–0 | Aumueller | 36. Staufer Open 2026 A | King's Indian Defense: Fianchetto Variation, Long Variation | |
| Jan 3, 2026 | Harsh Suresh | 1–0 | Chittka | 36. Staufer Open 2026 A | Caro-Kann Defense: Tartakower Variation | |
| Jan 2, 2026 | Chittka | 1–0 | Aepfler | 36. Staufer Open 2026 A | Queen's Pawn Game: London System | |
| Sep 5, 2025 | Chittka | ½–½ | Markocic | Nono turno: Chittka, Julius - Markocic, Tine | Queen's Pawn Game: London System | |
| Sep 4, 2025 | Pajeken | 1–0 | Chittka | Ottavo turno: Pajeken, Jakob Leon - Chittka, Julius | Caro-Kann Defense: Exchange Variation | |
| Sep 2, 2025 | Banikas | 1–0 | Chittka | Sesto turno: Banikas, Hristos - Chittka, Julius | Catalan Opening: Closed | |
| Mar 7, 2025 | Druska | 1–0 | Chittka | PICF 2025 - KAREL JANEČEK Open | English Opening: Agincourt Defense | |
| Mar 6, 2025 | Chittka | ½–½ | Neuman | PICF 2025 - KAREL JANEČEK Open | Queen's Pawn Game: London System | |
| Mar 5, 2025 | Kraus | ½–½ | Chittka | PICF 2025 - KAREL JANEČEK Open | English Opening: Agincourt Defense | |
| Mar 1, 2025 | Vykouk | 1–0 | Chittka | PICF 2025 - KAREL JANEČEK Open | Caro-Kann Defense: Exchange Variation | |
| Jan 4, 2025 | Ferster | 1–0 | Chittka | 35. Staufer Open 2025 | English Opening | |
| Jan 3, 2025 | Hagner | 1–0 | Chittka | 35. Staufer Open 2025 | Caro-Kann Defense | |
| Jan 2, 2025 | Chittka | 1–0 | Noennig | 35. Staufer Open 2025 | Queen's Pawn Game: London System | |
| Mar 31, 2024 | Chittka | 0–1 | Krastev | Grenke Chess Open 2024 | Indian Defense: London System | |
| Mar 30, 2024 | Chittka | * | Serikbay | Grenke Open | ? | |
| Mar 30, 2024 | Schlosser | ½–½ | Chittka | Grenke Chess Open 2024 | Queen's Gambit Declined: Queen's Knight Variation | |
| Mar 29, 2024 | Indjic | 1–0 | Chittka | Grenke Chess Open 2024 | Queen's Gambit Declined: Three Knights, Vienna Variation | |
