| Nov 22, 2024 | Zenker | 0–1 | Demchenko | Round 2: Zenker, Felix - Demchenko, Yaroslav | Zukertort Opening: Sicilian Invitation | |
| Nov 22, 2024 | Demchenko | 1–0 | Lahouimel | Round 1: Demchenko, Yaroslav - Lahouimel, Omar | Sicilian Defense: Kalashnikov Variation | |
| May 25, 2024 | Abou Wally | 0–1 | Demchenko | DEM U18 2024 | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| May 24, 2024 | Demchenko | 0–1 | Scharf | DEM U18 2024 | Sicilian Defense: Taimanov Variation | |
| May 23, 2024 | Demchenko | 0–1 | Englert | DEM U18 2024 | Sicilian Defense: Closed | |
| May 22, 2024 | Hommer | 1–0 | Demchenko | DEM U18 2024 | East Indian Defense | |
| May 22, 2024 | Hoffmann | 0–1 | Demchenko | DEM U18 2024 | King's Indian Defense: Makogonov Variation | |
| May 21, 2024 | Demchenko | 0–1 | Duong | DEM U18 2024 | Queen's Pawn Game: London System | |
| May 20, 2024 | Demchenko | 1–0 | Storm | DEM U18 2024 | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| May 19, 2024 | Demchenko | 0–1 | Eilenberg | DEM U18 2024 | Scotch Game: Scotch Gambit, Advance Variation | |
| May 19, 2024 | Passin | ½–½ | Demchenko | DEM U18 2024 | Sicilian Defense: Closed | |
| Nov 24, 2024 | Demchenko | 1–0 | Fehmer | Round 5: Demchenko, Yaroslav - Fehmer, Dirk | French Defense: Schlechter Variation | |
| Nov 23, 2024 | Demchenko | 1–0 | Sechting | Round 3: Demchenko, Yaroslav - Sechting, Martin | Alekhine Defense: Balogh Variation | |
| Nov 23, 2024 | Buchinger | ½–½ | Demchenko | Round 4: Buchinger, Alexis - Demchenko, Yaroslav | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| — | Demchenko | 1–0 | Auburger | Round 1: Demchenko, Yaroslav - Auburger, Philipp, Dr. | Petrov's Defense: Modern Attack, Murrey Variation | |
| — | Demchenko | ½–½ | Uphoff | Round 3: Demchenko, Yaroslav - Uphoff, Lennart | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| — | Demchenko | 1–0 | Lentrodt | Round 5: Demchenko, Yaroslav - Lentrodt, Thomas | French Defense: Schlechter Variation | |
| — | Demchenko | ½–½ | Duong | Round 6: Demchenko, Yaroslav - Duong, Quang Bach | Sicilian Defense: Prins Variation | |
| — | Demchenko | ½–½ | Englert | Round 8: Demchenko, Yaroslav - Englert, Fabian | Alekhine Defense: Scandinavian Variation | |
| — | Goldbeck | ½–½ | Demchenko | Round 2: Goldbeck, Lars - Demchenko, Yaroslav | Zukertort Opening: Sicilian Invitation | |
| — | Koppe | 0–1 | Demchenko | Round 4: Koppe, Connor - Demchenko, Yaroslav | Sicilian Defense: Closed, Traditional | |
| — | Schulz | ½–½ | Demchenko | Round 7: Schulz, Lukas - Demchenko, Yaroslav | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| — | Ratushnyi | 0–1 | Demchenko | Round 9: Ratushnyi, Viktor - Demchenko, Yaroslav | Sicilian Defense: Hyperaccelerated Fianchetto | |
