| Jul 19, 2026 | Chantrell | 1–0 | Altenburger | Round 8: Chantrell, Paul - Altenburger, Rene | Petrov's Defense: Nimzowitsch Attack | |
| Jul 19, 2026 | Altenburger | 0–1 | Damen | Round 7: Altenburger, Rene - Damen, Josephine | King's Indian Defense | |
| Jul 19, 2026 | Tureshbayev | 1–0 | Altenburger | Round 6: Tureshbayev, Anuar - Altenburger, Rene | Petrov's Defense | |
| Jul 19, 2026 | Altenburger | ½–½ | Gluckman | Round 5: Altenburger, Rene - Gluckman, David | Dutch Defense: Classical Variation | |
| Jul 19, 2026 | Altenburger | 1–0 | Delesenne | Round 4: Altenburger, Rene - Delesenne, Arthur | Queen's Pawn Game: Colle System | |
| Jul 19, 2026 | Pinelli | ½–½ | Altenburger | Round 3: Pinelli, Gian - Altenburger, Rene | Grünfeld Defense: Exchange Variation | |
| Jul 19, 2026 | Altenburger | 1–0 | Boner | Round 2: Altenburger, Rene - Boner, Timm | Queen's Pawn Game: Chigorin Variation | |
| Jul 20, 2025 | Freuler | ½–½ | Altenburger | Biel Chess Festival 2025 Blitz | Scotch Game | |
| Jul 20, 2025 | Altenburger | 1–0 | Avilova | Biel Chess Festival 2025 Blitz | Queen's Gambit Declined: Three Knights Variation | |
| Jul 20, 2025 | Zeenni | ½–½ | Altenburger | Biel Chess Festival 2025 Blitz | Italian Game: Hungarian Defense | |
| Jul 20, 2025 | Altenburger | 0–1 | Borisyuk | Biel Chess Festival 2025 Blitz | Semi-Slav Defense: Main Line | |
| Jul 20, 2025 | Soo | 1–0 | Altenburger | Biel Chess Festival 2025 Blitz | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| Jul 20, 2025 | Altenburger | 1–0 | Gauthey | Biel Chess Festival 2025 Blitz | Queen's Gambit Declined: Three Knights Variation | |
| Jul 20, 2025 | Muheim | ½–½ | Altenburger | Biel Chess Festival 2025 Blitz | Italian Game: Hungarian Defense | |
| Jul 20, 2025 | Pleininger | 0–1 | Altenburger | Biel Chess Festival 2025 Blitz | Italian Game: Scotch Gambit, Walbrodt-Baird Gambit | |
| Jul 20, 2025 | Altenburger | ½–½ | Tereshchenko | Biel Chess Festival 2025 Blitz | Queen's Gambit Accepted: Mannheim Variation | |
| Jul 20, 2025 | Erne | 1–0 | Altenburger | Biel Chess Festival 2025 Blitz | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Exchange Line | |
| Jul 20, 2025 | Altenburger | 0–1 | Dau Khuong Duy | Biel Chess Festival 2025 Blitz | East Indian Defense | |
| Jul 20, 2025 | Poh | 0–1 | Altenburger | Biel Chess Festival 2025 Blitz | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |