| May 24, 2026 | Saydaliev | 1–0 | Korneev | Round 9: Saydaliev, Saidakbar - Korneev, Oleg | Italian Game: Classical Variation, Giuoco Pianissimo | |
| May 23, 2026 | Korneev | 1–0 | Askarov | Round 8: Korneev, Oleg - Askarov, Bakhtiyar | French Defense: Winawer Variation, Petrosian Variation | |
| May 23, 2026 | Isaev | 0–1 | Korneev | Round 7: Isaev, Anton - Korneev, Oleg | Queen's Pawn Game: London System | |
| May 19, 2026 | Korneev | ½–½ | Shavkatov | Round 1: Korneev, Oleg - Shavkatov, Temur | Queen's Pawn Game: London System | |
| May 9, 2026 | Bauer | 1–0 | Korneev | Luc Winants Memorial Rapid Chess Tournament 2026 | Italian Game: Giuoco Pianissimo, Normal | |
| May 9, 2026 | Korneev | 1–0 | Kuzubov | Luc Winants Memorial Rapid Chess Tournament 2026 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| May 9, 2026 | Bok | 1–0 | Korneev | Luc Winants Memorial Rapid Chess Tournament 2026 | Slav Defense: Exchange Variation | |
| Apr 11, 2026 | Pijpers | 0–1 | Korneev | Round 9: Pijpers, Arthur - Korneev, Oleg | Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense | |
| Apr 5, 2026 | Uzcategui Rodriguez | 0–1 | Korneev | Round 9: Uzcategui Rodriguez, Alejandro - Korneev, Oleg | English Opening: King's English Variation | |
| Apr 4, 2026 | Korneev | 1–0 | Mouhamad | Round 8: Korneev, Oleg - Mouhamad, Joachim | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 3, 2026 | Korneev | 1–0 | Blanco Garcia Bajo | Round 7: Korneev, Oleg - Blanco Garcia Bajo, David | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Apr 2, 2026 | Estremera Panos | ½–½ | Korneev | Round 6: Estremera Panos, Sergio - Korneev, Oleg | Semi-Slav Defense: Quiet Variation | |
| Apr 1, 2026 | Korneev | ½–½ | Tytynnik | Round 5: Korneev, Oleg - Tytynnik, Artem | Sicilian Defense: Alapin Variation | |
| Mar 31, 2026 | Brito Garcia | ½–½ | Korneev | Round 4: Brito Garcia, Alfredo - Korneev, Oleg | King's Indian Attack: Keres Variation | |
| Mar 30, 2026 | Korneev | 1–0 | Bicol | Round 3: Korneev, Oleg - Bicol, Franklin | French Defense: Tarrasch Variation | |
| Mar 30, 2026 | Ferreira | ½–½ | Korneev | KNSB competitie 2025/2026 | Slav Defense: Czech Variation, Wiesbaden Variation, Sharp Line | |
| Mar 29, 2026 | Morell Rojas | 0–1 | Korneev | Round 2: Morell Rojas, Samuel - Korneev, Oleg | Italian Game: Deutz Gambit | |
| Mar 7, 2026 | Elgersma | ½–½ | Korneev | Round 8: Elgersma, Onno - Korneev, Oleg | King's Indian Attack: Keres Variation | |
| Mar 1, 2026 | Meshkovs | ½–½ | Korneev | 2. Bundesliga Nord | Slav Defense: Czech Variation, Wiesbaden Variation | |
| Feb 18, 2026 | Korneev | 1–0 | Kokoszczynski | Open Pamplona 26 | Sicilian Defense: Moscow Variation, Main Line | |
| Feb 18, 2026 | Goni Sierro | 0–1 | Korneev | Open Pamplona 26 | Slav Defense: Czech Variation, Classical System, Main Line | |
| Feb 18, 2026 | Korneev | ½–½ | Barcelo Melnyk | Open Pamplona 26 | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Feb 17, 2026 | Miellet-Bensan | 0–1 | Korneev | Open Pamplona 26 | Sicilian Defense: Closed, Korchnoi Defense | |
| Feb 17, 2026 | Korneev | 1–0 | Otazu Casanes | Open Pamplona 26 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Feb 16, 2026 | Vila Dupla | ½–½ | Korneev | Open Pamplona 26 | King's Indian Attack: Keres Variation | |
| Feb 9, 2026 | Plat | ½–½ | Korneev | Runde 9: Plat, Vojtech - Korneev, Oleg | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Feb 9, 2026 | Korneev | ½–½ | Fuhrmann | Runde 8: Korneev, Oleg - Fuhrmann, Bahne | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Feb 9, 2026 | Kopylov | ½–½ | Korneev | Runde 7: Kopylov, Michael - Korneev, Oleg | Slav Defense: Exchange Variation | |
| Feb 9, 2026 | Korneev | 1–0 | Holtel | Runde 6: Korneev, Oleg - Holtel, Jasper | Sicilian Defense: O'Kelly Variation, Maróczy Bind, Geller Line | |
| Feb 9, 2026 | Medhus | ½–½ | Korneev | Runde 5: Medhus, Vitus Bondo - Korneev, Oleg | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Feb 9, 2026 | Korneev | 1–0 | Mester | Runde 4: Korneev, Oleg - Mester, Philipp | Dutch Defense: Raphael Variation | |
| Feb 9, 2026 | Korchynskyi | ½–½ | Korneev | Runde 3: Korchynskyi, Mykola - Korneev, Oleg | Slav Defense: Quiet Variation, Schallopp Defense | |
| Feb 9, 2026 | Korneev | 1–0 | Hald Falkesgaard | Runde 2: Korneev, Oleg - Hald Falkesgaard, Jeppe | Sicilian Defense: Kalashnikov Variation | |
| Feb 9, 2026 | Vollbehr | 0–1 | Korneev | Runde 1: Vollbehr, Bjarne - Korneev, Oleg | Slav Defense: Exchange Variation | |
| Feb 8, 2026 | Albornoz Cabrera | ½–½ | Korneev | Open Pamplona 26 | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Jan 16, 2026 | Terhuven | ½–½ | Korneev | Prague Open 2026 - A IM Open | King's Indian Attack | |
| Jan 15, 2026 | Korneev | 1–0 | Ricken | Prague Open 2026 - A IM Open | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jan 14, 2026 | Lieberwirth | ½–½ | Korneev | Prague Open 2026 - A IM Open | Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid | |
| Jan 13, 2026 | Korneev | 1–0 | Ghazaryan | Prague Open 2026 - A IM Open | Queen's Pawn Game: London System | |
| Jan 11, 2026 | Korneev | ½–½ | Badenhorst | Prague Open 2026 - A IM Open | Nimzo-Indian Defense: Normal Variation, Ragozin Variation | |
| Jan 6, 2026 | Herbrig | ½–½ | Korneev | 36. Staufer Open 2026 A | Catalan Opening: Open Defense | |
| Jan 5, 2026 | Korneev | 1–0 | Weber | 36. Staufer Open 2026 A | Caro-Kann Defense: Advance Variation | |
| Jan 5, 2026 | Nunez Gregoire | ½–½ | Korneev | 36. Staufer Open 2026 A | Queen's Gambit Declined | |
| Jan 4, 2026 | Korneev | ½–½ | Boder | 36. Staufer Open 2026 A | Petrov's Defense: Modern Attack, Murrey Variation | |
| Jan 4, 2026 | Ronge | 0–1 | Korneev | 36. Staufer Open 2026 A | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| Jan 3, 2026 | Korneev | 1–0 | Friedrich | 36. Staufer Open 2026 A | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov Attack | |
| Jan 3, 2026 | Wagner | ½–½ | Korneev | 36. Staufer Open 2026 A | Queen's Pawn Game: Colle System, Anti-Colle | |
| Jan 2, 2026 | Korneev | ½–½ | Papadopoulos | 36. Staufer Open 2026 A | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jan 2, 2026 | Wolf | 0–1 | Korneev | 36. Staufer Open 2026 A | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Dec 26, 2025 | Korneev | ½–½ | Dovgaliuk | Round 5: Korneev, Oleg - Dovgaliuk, Oleksandr | Sicilian Defense: Moscow Variation, Main Line | |
| Dec 21, 2025 | Di Benedetto | ½–½ | Korneev | Round 5: Di Benedetto, Edoardo - Korneev, Oleg | Slav Defense: Quiet Variation, Schallopp Defense | |
| Dec 21, 2025 | Proietti Cobas | ½–½ | Korneev | Round 4: Proietti Cobas, Jorge - Korneev, Oleg | Sicilian Defense: French Variation, Normal | |
| Dec 20, 2025 | Korneev | 1–0 | Granaldi | Round 3: Korneev, Oleg - Granaldi, Alessandro | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Dec 20, 2025 | Bilous | 0–1 | Korneev | Round 2: Bilous, Adrian - Korneev, Oleg | English Opening: King's English Variation | |
| Dec 19, 2025 | Korneev | ½–½ | Ripa` | Round 1: Korneev, Oleg - Ripa`, Daniele | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Nov 22, 2025 | Van Foreest | 1–0 | Korneev | Round 4: Van Foreest, Lucas - Korneev, Oleg | Scotch Game: Classical Variation, Intermezzo Variation | |
| Oct 18, 2025 | Fidalgo | 0–1 | Korneev | Supertaça 2025-26 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line | |
| Oct 4, 2025 | Korneev | ½–½ | Ten Hertog | Round 2: Korneev, Oleg - Ten Hertog, Hugo | Modern Defense | |
| Sep 20, 2025 | Warmerdam | ½–½ | Korneev | Round 1: Warmerdam, Max - Korneev, Oleg | King's Indian Attack: Keres Variation | |
| Sep 12, 2025 | Korneev | ½–½ | Haba | Round 5: Korneev, Oleg - Haba, Petr | French Defense: Rubinstein Variation, Kasparov Attack | |
| Sep 12, 2025 | Milov | ½–½ | Korneev | Round 4: Milov, Leonid - Korneev, Oleg | English Opening: King's English Variation | |
| Sep 12, 2025 | Korneev | ½–½ | Brilej | Round 3: Korneev, Oleg - Brilej, Jaka | Sicilian Defense: Moscow Variation | |
| Sep 12, 2025 | Jiang | 0–1 | Korneev | Round 2: Jiang, Brandon - Korneev, Oleg | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Sep 12, 2025 | Korneev | 1–0 | Aumueller | Round 1: Korneev, Oleg - Aumueller, Naum | Sicilian Defense: Najdorf Variation, English Attack | |
| Jul 30, 2025 | Korneev | 1–0 | Lont | Round 9: Korneev, Oleg - Lont, Addy | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 29, 2025 | Reuter | ½–½ | Korneev | Round 8: Reuter, Julian-Frank - Korneev, Oleg | King's Indian Attack: Keres Variation | |
| Jul 26, 2025 | Leenhouts | ½–½ | Korneev | Round 5: Leenhouts, Koen - Korneev, Oleg | Semi-Slav Defense: Meran Variation, Lundin Variation | |
| Jul 24, 2025 | Van Roon | 0–1 | Korneev | Round 3: Van Roon, Sjoerd - Korneev, Oleg | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jul 23, 2025 | Korneev | 1–0 | Kumar | Round 2: Korneev, Oleg - Kumar, Prajit Sai | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 22, 2025 | Wink | 0–1 | Korneev | Round 1: Wink, Luka - Korneev, Oleg | Ruy Lopez: Open, Main Line | |
| Jul 20, 2025 | Droin | ½–½ | Korneev | CN Equipas 2024-25 | Italian Game: Evans Gambit, Tartakower Attack | |
| Jul 19, 2025 | Korneev | ½–½ | Macias Pino | CN Equipas 2024-25 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jul 18, 2025 | Korneev | ½–½ | Quesada Perez | CN Equipas 2024-25 | Sicilian Defense: Scheveningen Variation, Classical Main Line | |
| Jul 17, 2025 | Volokitin | 1–0 | Korneev | CN Equipas 2024-25 | Italian Game: Giuoco Piano | |
| Jul 16, 2025 | Korneev | ½–½ | Garrido Outon | CN Equipas 2024-25 | Sicilian Defense: Najdorf Variation, English Attack | |
| Jul 16, 2025 | Korneev | ½–½ | Hausrath | Round 7: Korneev, Oleg - Hausrath, Daniel | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jul 16, 2025 | Korneev | ½–½ | De Boer | Round 6: Korneev, Oleg - De Boer, Eelke | Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense | |
| Jul 16, 2025 | Korneev | ½–½ | Baselmans | Round 4: Korneev, Oleg - Baselmans, Luuk | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jul 15, 2025 | Korneev | ½–½ | Luch | CN Equipas 2024-25 | Sicilian Defense: Scheveningen Variation, Classical Main Line | |
| Jul 14, 2025 | Ferreira | ½–½ | Korneev | CN Equipas 2024-25 | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Jul 13, 2025 | Ribera Veganzones | ½–½ | Korneev | Round 9: Ribera Veganzones, Serni - Korneev, Oleg | Sicilian Defense: French Variation, Normal | |
| Jul 11, 2025 | Csiki | * | Korneev | Round 7: Csiki, Endre - Korneev, Oleg | ? | |
| Jul 10, 2025 | Korneev | * | Montalban Galvez | Round 6: Korneev, Oleg - Montalban Galvez, Antoni | ? | |
| Jul 9, 2025 | Garcia Molina | * | Korneev | Round 5: Garcia Molina, Jose - Korneev, Oleg | ? | |
| Jul 8, 2025 | Pranav | ½–½ | Korneev | CN Equipas 2024-25 | King's Indian Attack: Keres Variation | |
| Jul 8, 2025 | Ribeiro | ½–½ | Korneev | CN Equipas 2024-25 | Sicilian Defense: French Variation | |
| Jul 8, 2025 | Korneev | * | Flynn | Round 4: Korneev, Oleg - Flynn, Jacob | ? | |
| Jul 7, 2025 | Capone | ½–½ | Korneev | Round 3: Capone, Nicola - Korneev, Oleg | Italian Game: Classical Variation, Giuoco Pianissimo, Main Line | |
| Jul 6, 2025 | Korneev | * | Palchuk | Round 2: Korneev, Oleg - Palchuk, Andrii | ? | |
| Jul 5, 2025 | Krasteva | ½–½ | Korneev | Round 1: Krasteva, Beloslava - Korneev, Oleg | Queen's Gambit Declined: Anti-Tartakower Variation, Petrosian Variation | |
| May 28, 2025 | Korneev | 1–0 | Mann | RHIO 2025 | French Defense: Classical Variation | |
| May 28, 2025 | Kamp | ½–½ | Korneev | RHIO 2025 | Sicilian Defense: Godiva Variation | |
| May 28, 2025 | Korneev | ½–½ | Garbuz | RHIO 2025 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| May 28, 2025 | Kummerow | 0–1 | Korneev | RHIO 2025 | Sicilian Defense: Richter-Rauzer Variation | |
| May 28, 2025 | Korneev | 1–0 | Goldkuhle | RHIO 2025 | Sicilian Defense: Moscow Variation, Main Line | |
| May 28, 2025 | Yarina | 0–1 | Korneev | RHIO 2025 | Semi-Slav Defense: Marshall Gambit, Main Line | |
| May 28, 2025 | Korneev | 1–0 | Folith | RHIO 2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| May 13, 2025 | Nemegeer | ½–½ | Korneev | Round 9: Nemegeer, Arne - Korneev, Oleg | Italian Game: Classical Variation, Greco Gambit | |
| May 4, 2025 | Korneev | 1–0 | Rasmussen | SonFlow Cup | Caro-Kann Defense: Karpov Variation, Modern Main Line | |
| May 4, 2025 | Korneev | ½–½ | Hector | SonFlow Cup | Italian Game: Two Knights Defense, Modern Bishop's Opening | |