| Jun 27, 2026 | Titov | ½–½ | Weis | Round 11: Titov, Evgeny - Weis, Robert | Indian Defense: Spielmann-Indian | |
| Jun 26, 2026 | Weis | ½–½ | Dalaloyan | Round 10: Weis, Robert - Dalaloyan, Davit | French Defense: Tarrasch Variation, Guimard Defense, Main Line | |
| Jun 25, 2026 | Bulka | 0–1 | Weis | Round 9: Bulka, Vitali - Weis, Robert | Petrov's Defense: Modern Attack, Center Variation | |
| Jun 24, 2026 | Weis | ½–½ | Unlusan | Round 8: Weis, Robert - Unlusan, Evren | Four Knights Game: Scotch Variation Accepted | |
| Jun 23, 2026 | Weis | 1–0 | Al-Mahasna | FIDE World Cadets Cup, O10 / B55-75 | Italian Game: Classical Variation | |
| Jun 21, 2026 | Nemsitsveridze | 1–0 | Weis | Round 6: Nemsitsveridze, Giorgi - Weis, Robert | Four Knights Game: Scotch Variation Accepted, Main Line | |
| Jun 20, 2026 | Loginov | 1–0 | Weis | Round 5: Loginov, Bogdan - Weis, Robert | Italian Game: Scotch Gambit, Walbrodt-Baird Gambit | |
| Jun 19, 2026 | Weis | 0–1 | Mangasaryan | Round 4: Weis, Robert - Mangasaryan, Arsen Z. | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jun 18, 2026 | Stankowski | 1–0 | Weis | Round 3: Stankowski, Wiktor - Weis, Robert | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jun 17, 2026 | Weis | ½–½ | Meiyazhagan | Round 2: Weis, Robert - Meiyazhagan, Kaviinayan | Four Knights Game: Scotch Variation Accepted | |
| Jun 16, 2026 | Machitadze | 0–1 | Weis | Round 1: Machitadze, Luka - Weis, Robert | Italian Game: Classical Variation, Greco Gambit, Moeller-Therkatz Attack | |
| May 24, 2026 | Develey | 0–1 | Weis | Swiss Youth Championship 2026 U10 | Ruy Lopez: Exchange Variation | |
| May 23, 2026 | Zimmerli | ½–½ | Weis | Swiss Youth Championship 2026 U10 | Four Knights Game: Scotch Variation Accepted | |
| May 22, 2026 | Weis | 1–0 | Aubier | Swiss Youth Championship 2026 U10 | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| May 22, 2026 | Eykher | 0–1 | Weis | Swiss Youth Championship 2026 U10 | Italian Game: Evans Gambit, Main Line | |
| Mar 23, 2026 | Rosset | 0–1 | Weis | Swiss Youth Championship 2026 U10 | English Opening: Symmetrical Variation, Anti-Benoni Variation | |
| Mar 23, 2026 | Weis | ½–½ | Papageorgiou Martinella | Swiss Youth Championship 2026 U10 | French Defense: Tarrasch Variation, Open System, Main Line | |
| Mar 23, 2026 | Weis | 1–0 | Lohmiller | Swiss Youth Championship 2026 U10 | Italian Game: Classical Variation, Greco Gambit, Moeller-Therkatz Attack | |
| Jun 9, 2025 | Weis | ½–½ | Toumpakaris | Swiss Youtch Chess Championship 2025 U10 | Italian Game: Scotch Gambit, Max Lange Attack | |
| Jun 8, 2025 | Weis | ½–½ | Carnevale-Arella | Swiss Youtch Chess Championship 2025 U10 | Petrov's Defense: Nimzowitsch Attack | |
| Jun 8, 2025 | Aubier | 1–0 | Weis | Swiss Youtch Chess Championship 2025 U10 | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Jun 7, 2025 | Aubier | 0–1 | Weis | Swiss Youtch Chess Championship 2025 U10 | Queen's Pawn Game: Levitsky Attack | |
| Jun 6, 2025 | Weis | 1–0 | Aragonda | Swiss Youtch Chess Championship 2025 U10 | Sicilian Defense: Accelerated Dragon, Exchange Variation | |
| Jun 6, 2025 | Radovcic | 0–1 | Weis | Swiss Youtch Chess Championship 2025 U10 | Italian Game: Evans Gambit, Anderssen Variation | |
| May 19, 2025 | Weis | 0–1 | Liakh | Swiss Youtch Chess Championship 2025 U10 | Sicilian Defense: Dragon Variation, Modern Bc4 Variation | |
| May 25, 2024 | Weis | 0–1 | Chaganti | DEM U8 2024 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| May 24, 2024 | Weis | 0–1 | Nune | DEM U8 2024 | Italian Game: Rousseau Gambit | |
| May 24, 2024 | Sriram | ½–½ | Weis | DEM U8 2024 | Scotch Game: Mieses Variation | |
| May 23, 2024 | Weis | 0–1 | Mudriievskyi | DEM U8 2024 | Sicilian Defense: Dragon Variation, Classical Variation | |
| May 23, 2024 | Rudnizki | 0–1 | Weis | DEM U8 2024 | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| May 22, 2024 | Weis | ½–½ | Schimming | DEM U8 2024 | Réti Opening: Advance Variation | |
| May 22, 2024 | Shtogrin | 0–1 | Weis | DEM U8 2024 | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |