| Dec 28, 2025 | Li | 1–0 | Mandziuk | DVM U12w 2025 | Queen's Pawn Game: Colle System | |
| Dec 29, 2024 | Mersmann | 1–0 | Mandziuk | DVM U12w 2024 | Four Knights Game: Spanish Variation, Rubinstein Variation | |
| Dec 28, 2024 | Mandziuk | 0–1 | Wolf | DVM U12w 2024 | Philidor Defense | |
| Dec 28, 2024 | Mandziuk | 0–1 | Suryaprakash | DVM U12w 2024 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Dec 27, 2024 | Mandziuk | 0–1 | Winkler | DVM U12w 2024 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Dec 27, 2024 | Noennig | 1–0 | Mandziuk | DVM U12w 2024 | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| May 25, 2024 | Mandziuk | 1–0 | Müller | DEM U10w 2024 | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| May 24, 2024 | Mandziuk | 1–0 | Vignesh | DEM U10w 2024 | Caro-Kann Defense: Tartakower Variation | |
| May 24, 2024 | Artemenko | 1–0 | Mandziuk | DEM U10w 2024 | Italian Game: Two Knights Defense | |
| May 23, 2024 | Chen | 1–0 | Mandziuk | DEM U10w 2024 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 22, 2024 | Mandziuk | 1–0 | Bashirova | DEM U10w 2024 | Sicilian Defense: Lasker-Pelikan Variation, Schlechter Variation | |
| May 22, 2024 | Mandziuk | 0–1 | Lukas | DEM U10w 2024 | Italian Game: Classical Variation, Greco Gambit, Anderssen Variation | |
| May 21, 2024 | Hleizer | 0–1 | Mandziuk | DEM U10w 2024 | Four Knights Game: Scotch Variation Accepted | |
| May 20, 2024 | Mandziuk | 1–0 | Kandora | DEM U10w 2024 | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| May 20, 2024 | Yamshchikova | ½–½ | Mandziuk | DEM U10w 2024 | Italian Game: Giuoco Pianissimo | |
| May 19, 2024 | Mandziuk | 0–1 | Tu | DEM U10w 2024 | Four Knights Game: Italian Variation | |
| May 19, 2024 | Seitov | 0–1 | Mandziuk | DEM U10w 2024 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| — | Mandziuk | 1–0 | Rueegg | Round 4: Mandziuk, Varvara - Rueegg, Isabell | Italian Game: Hungarian Defense | |
| — | Mandziuk | 1–0 | Sieben | Round 6: Mandziuk, Varvara - Sieben, Liliane | Scandinavian Defense: Marshall Variation | |
| — | Mandziuk | 0–1 | Predin | Round 7: Mandziuk, Varvara - Predin, Mara | Four Knights Game: Italian Variation | |
| — | Friscic | 1–0 | Mandziuk | Round 1: Friscic, Jakov - Mandziuk, Varvara | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| — | Doberchak | ½–½ | Mandziuk | Round 3: Doberchak, Emily Alice - Mandziuk, Varvara | Four Knights Game: Spanish Variation, Classical Variation | |
| — | Englert | 1–0 | Mandziuk | Round 5: Englert, Ann - Mandziuk, Varvara | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| — | Pichler | 1–0 | Mandziuk | Round 8: Pichler, Clemens - Mandziuk, Varvara | French Defense: Winawer Variation, Advance Variation | |
