| Game | Result | Opening | Date |
|---|---|---|---|
| Diachek, Andrii (2294) – Dzida, Kamil (2416) | 1/2-1/2 | Queen's Indian Defense: Classical Variation, Traditional Variation | 2026-09-11 |
| Komendecki, Antoni (2252) – Diachek, Andrii (2294) | 1-0 | Nimzo-Larsen Attack: Classical Variation | 2026-09-10 |
| Diachek, Andrii (2294) – Babiarz, Arkadiusz (2176) | 1-0 | Petrov's Defense: Modern Attack, Murrey Variation | 2026-09-09 |
| Zylka, Stanislaw (2360) – Diachek, Andrii (2294) | 0-1 | Semi-Slav Defense: Anti-Moscow Gambit | 2026-09-08 |
| Diachek, Andrii (2294) – Bendayan Claros, Aaron (2309) | 1-0 | English Opening: Agincourt Defense, Catalan Defense Accepted | 2026-09-07 |
| Bochniak, Franciszek (2125) – Diachek, Andrii (2294) | 0-1 | English Opening: Agincourt Defense | 2026-09-06 |
| Diachek, Andrii (2294) – Luba, Lukasz (2115) | 1-0 | Pirc Defense: Classical Variation, Quiet System | 2026-09-05 |
| Diachek, Andrii (2294) – Marchenko, Artem (2227) | 1-0 | Sicilian Defense: Kan Variation, Modern Variation | 2026-08-24 |
| Baranciuc, Alexandr (2291) – Diachek, Andrii (2294) | 1-0 | Zukertort Opening | 2026-08-23 |
| Diachek, Andrii (2294) – Domanskiy, Mykola (2303) | 1/2-1/2 | Catalan Opening: Closed | 2026-08-22 |
| Karvatskyi, Oleksii (2351) – Diachek, Andrii (2294) | 1-0 | Sicilian Defense: Kalashnikov Variation | 2026-08-21 |
| Diachek, Andrii (2294) – Alexikov, Alexander (2099) | 1/2-1/2 | Old Indian Defense: Two Knights Variation | 2026-08-21 |
| Terletsky, Oleg (2160) – Diachek, Andrii (2294) | 1-0 | Sicilian Defense: Kalashnikov Variation | 2026-08-20 |
| Diachek, Andrii (2294) – Kislinsky, Alexey (2313) | 1/2-1/2 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | 2026-08-19 |
| Frankiv, Oleksandr (2053) – Diachek, Andrii (2294) | 1/2-1/2 | Sicilian Defense: Old Sicilian | 2026-08-19 |
| Dyachuk, Artem (2376) – Diachek, Andrii (2294) | 1-0 | Ruy Lopez: Closed, Delayed Exchange | 2026-08-18 |
| Diachek, Andrii (2295) – Tretyak, Kyryl (2126) | 1/2-1/2 | Catalan Opening: Open Defense, Classical Line | 2026-08-17 |
| Diachek, Andrii (2295) – Shykyravyi, Denys (2026) | 1-0 | English Opening: Anglo-Indian Defense, King's Indian Formation | 2026-08-17 |
| Brodsky, Michail (2472) – Diachek, Andrii (2295) | 1/2-1/2 | Bogo-Indian Defense: Nimzowitsch Variation | 2026-08-17 |
| Diachek, Andrii (2350) – Kozlowski, Kacper (1774) | 1-0 | English Opening: Anglo-Indian Defense, King's Indian Formation | 2026-07-13 |
| Korszanski, Stanislaw (2267) – Diachek, Andrii (2350) | 0-1 | Italian Game: Two Knights Defense, Modern Bishop's Opening | 2026-07-13 |
| Diachek, Andrii (2350) – Gibala, Adam (2267) | 0-1 | English Opening: Symmetrical Variation | 2026-07-13 |
| Rajbharath, Harjith (1960) – Diachek, Andrii (2350) | 0-1 | Nimzo-Indian Defense: Three Knights Variation | 2026-07-13 |
| Mierzwa, Mateusz (1616) – Diachek, Andrii (2350) | 0-1 | Italian Game: Two Knights Defense, Modern Bishop's Opening | 2026-07-13 |
| Diachek, Andrii (2350) – Pelczarski, Wojciech (1978) | 1-0 | English Opening: King's English Variation | 2026-07-13 |
| Kozmala, Michal (1895) – Diachek, Andrii (2350) | 0-1 | Zukertort Opening: Nimzo-Larsen Variation | 2026-07-13 |
| Diachek, Andrii (2350) – Madejski, Milosz (2216) | 1-0 | Catalan Opening: Open Defense | 2026-07-13 |
| Diachek, Andrii (2350) – Golis, Wiktor (2291) | 1-0 | English Opening: Agincourt Defense | 2026-07-10 |
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