| Nov 30, 2025 | Nyzhnyk | ½–½ | Kraai | Round 9: Nyzhnyk, Illya - Kraai, Jesse | Queen's Gambit Declined: Three Knights Variation | |
| Nov 30, 2025 | Shabalov | 1–0 | Nyzhnyk | Round 8: Shabalov, Alexander - Nyzhnyk, Illya | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Nov 30, 2025 | Nyzhnyk | ½–½ | Tanenbaum | Round 7: Nyzhnyk, Illya - Tanenbaum, Zachary | Tarrasch Defense: Schara Gambit | |
| Nov 29, 2025 | Lu | ½–½ | Nyzhnyk | Round 6: Lu, Maximillian - Nyzhnyk, Illya | Catalan Opening: Open Defense | |
| Nov 28, 2025 | Nyzhnyk | 1–0 | Lin | Round 5: Nyzhnyk, Illya - Lin, Bryan Enming | Nimzo-Larsen Attack: Indian Variation | |
| Nov 28, 2025 | Rakhmatullaev | 1–0 | Nyzhnyk | Round 4: Rakhmatullaev, Almas - Nyzhnyk, Illya | Petrov's Defense: Modern Attack | |
| Nov 27, 2025 | Nyzhnyk | 1–0 | Narayanan | Round 3: Nyzhnyk, Illya - Narayanan, Samrug | Vienna Game: Mengarini Variation | |
| Nov 27, 2025 | Li | 0–1 | Nyzhnyk | Round 2: Li, Rachael - Nyzhnyk, Illya | Sicilian Defense: Closed | |
| Nov 26, 2025 | Nyzhnyk | 1–0 | Abraham | Round 1: Nyzhnyk, Illya - Abraham, John Z | Sicilian Defense: French Variation | |
| Mar 7, 2025 | Sofronie | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Indian Defense | |
| Mar 6, 2025 | Nyzhnyk | 1–0 | Druska | PICF 2025 - KAREL JANEČEK Open | Rapport-Jobava System | |
| Mar 5, 2025 | Beerdsen | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Petrov's Defense: Nimzowitsch Attack | |
| Mar 4, 2025 | Nyzhnyk | 1–0 | Shagbazyan | PICF 2025 - KAREL JANEČEK Open | Caro-Kann Defense: Tartakower Variation | |
| Mar 3, 2025 | Kraus | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Petrov's Defense: Cozio Attack | |
| Mar 2, 2025 | Nyzhnyk | 1–0 | Svanda | PICF 2025 - KAREL JANEČEK Open | Zukertort Opening | |
| Mar 1, 2025 | Stinka | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Sicilian Defense: Moscow Variation | |
| Feb 28, 2025 | Nyzhnyk | 1–0 | Dwilewicz | PICF 2025 - KAREL JANEČEK Open | Queen's Pawn Game: London System | |
| Feb 27, 2025 | Hrbolka | 0–1 | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | King's Indian Defense: Semi-Averbakh System | |
| Jun 14, 2024 | Wu | ½–½ | Nyzhnyk | Round 9: Wu, Sibo - Nyzhnyk, Illya | Queen's Pawn Game: Barry Attack | |
| Jun 14, 2024 | Nyzhnyk | 1–0 | Deng | Round 8: Nyzhnyk, Illya - Deng, Henry | English Opening: Caro-Kann Defensive System | |
| Jun 13, 2024 | Cruz | ½–½ | Nyzhnyk | Round 7: Cruz, Cristhian - Nyzhnyk, Illya | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 13, 2024 | Nyzhnyk | ½–½ | Boros | Round 6: Nyzhnyk, Illya - Boros, Denes | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Jun 12, 2024 | Shivakumar | ½–½ | Nyzhnyk | Round 5: Shivakumar, Shawnak - Nyzhnyk, Illya | Slav Defense: Exchange Variation | |
| Jun 12, 2024 | Nyzhnyk | 1–0 | Tang | Round 4: Nyzhnyk, Illya - Tang, Dylan | Bishop's Opening: Berlin Defense | |
| Jun 11, 2024 | Vemparala | 0–1 | Nyzhnyk | Round 3: Vemparala, Nikash - Nyzhnyk, Illya | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jun 11, 2024 | Nyzhnyk | 1–0 | Zuluaga Mancilla | Round 2: Nyzhnyk, Illya - Zuluaga Mancilla, Cesar | Slav Defense: Chebanenko Variation | |
| Jun 11, 2024 | Nyzhnyk | 1–0 | Tang | Round 1: Nyzhnyk, Illya - Tang, Zoey | Slav Defense: Quiet Variation | |
| Feb 25, 2024 | Nyzhnyk | ½–½ | Raja Harshit | Round 9: Nyzhnyk, Illya - Raja Harshit | Slav Defense: Exchange Variation, Symmetrical Line | |
| Feb 25, 2024 | Kaplan | 0–1 | Nyzhnyk | Round 8: Kaplan, Avi Harrison - Nyzhnyk, Illya | King's Indian Defense: Kramer Variation | |
| Feb 25, 2024 | Nyzhnyk | ½–½ | Akobian | Round 10: Nyzhnyk, Illya - Akobian, Varuzhan | Bird Opening: Dutch Variation | |
| Feb 25, 2024 | Akobian | 1–0 | Nyzhnyk | Round 9: Akobian, Varuzhan - Nyzhnyk, Illya | King's Indian Defense: Smyslov Variation | |
| Feb 25, 2024 | Chandra | ½–½ | Nyzhnyk | Round 8: Chandra, Akshat - Nyzhnyk, Illya | Sicilian Defense: Moscow Variation | |
| Feb 25, 2024 | Nyzhnyk | ½–½ | Chandra | Round 7: Nyzhnyk, Illya - Chandra, Akshat | Caro-Kann Defense: Panov Attack, Main Line | |
| Feb 25, 2024 | Nyzhnyk | 0–1 | Caruana | Round 3: Nyzhnyk, Illya - Caruana, Fabiano | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Feb 25, 2024 | Nyzhnyk | 0–1 | Batsuren | Round 6: Nyzhnyk, Illya - Batsuren, Dambasuren | Queen's Gambit Declined: Three Knights Variation | |
| Feb 25, 2024 | Batsuren | 0–1 | Nyzhnyk | Round 5: Batsuren, Dambasuren - Nyzhnyk, Illya | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Feb 25, 2024 | Caruana | 0–1 | Nyzhnyk | Round 4: Caruana, Fabiano - Nyzhnyk, Illya | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Feb 25, 2024 | Theodorou | ½–½ | Nyzhnyk | Round 2: Theodorou, Nikolas - Nyzhnyk, Illya | French Defense: King's Indian Attack | |
| Feb 25, 2024 | Nyzhnyk | 1–0 | Theodorou | Round 1: Nyzhnyk, Illya - Theodorou, Nikolas | King's Indian Defense: Fianchetto Variation, Classical Fianchetto | |
| Feb 24, 2024 | Nyzhnyk | 1–0 | Eckert | Round 7: Nyzhnyk, Illya - Eckert, Doug | Indian Defense | |
| Feb 24, 2024 | Dhyana Patel | 0–1 | Nyzhnyk | Round 6: Dhyana Patel - Nyzhnyk, Illya | King's Indian Defense: Kazakh Variation | |
| Feb 24, 2024 | Nyzhnyk | ½–½ | Cervantes Landeiro | Round 5: Nyzhnyk, Illya - Cervantes Landeiro, Thalia | Sicilian Defense: Najdorf Variation | |
| Feb 23, 2024 | Caglar | 0–1 | Nyzhnyk | Round 4: Caglar, Sila - Nyzhnyk, Illya | Caro-Kann Defense: Two Knights Attack, Mindeno Variation | |
| Feb 22, 2024 | Nyzhnyk | ½–½ | Ladan | Round 3: Nyzhnyk, Illya - Ladan, Nicholas | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Feb 22, 2024 | Ghazaryan | 0–1 | Nyzhnyk | Round 2: Ghazaryan, Raffi - Nyzhnyk, Illya | Sicilian Defense: Najdorf Variation | |
| Feb 21, 2024 | Williams | ½–½ | Nyzhnyk | Round 1: Justus Williams - Illya Nyzhnyk | Indian Defense: Przepiorka Variation | |
| Nov 11, 2024 | Nyzhnyk | ½–½ | Can | Round 9: Nyzhnyk, Illya - Can, Isik | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Nov 11, 2024 | Hardaway | ½–½ | Nyzhnyk | Round 8: Hardaway, Brewington - Nyzhnyk, Illya | French Defense: Rubinstein Variation, Capablanca Line | |
| Nov 10, 2024 | Nyzhnyk | ½–½ | Griffith | Round 6: Nyzhnyk, Illya - Griffith, Kyron | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Nov 10, 2024 | Rozman | ½–½ | Nyzhnyk | Round 7: Rozman, Levy - Nyzhnyk, Illya | Slav Defense: Exchange Variation, Symmetrical Line | |
| Nov 9, 2024 | Nyzhnyk | ½–½ | Teclaf | Round 4: Nyzhnyk, Illya - Teclaf, Pawel | Four Knights Game: Scotch Variation Accepted | |
| Nov 9, 2024 | Kaliksteyn | 0–1 | Nyzhnyk | Round 5: Kaliksteyn, Alexander - Nyzhnyk, Illya | King's Indian Defense: Orthodox Variation | |
| Nov 8, 2024 | Nyzhnyk | ½–½ | Ostrovskiy | Round 2: Nyzhnyk, Illya - Ostrovskiy, Aleksandr | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Nov 8, 2024 | Barbosa | ½–½ | Nyzhnyk | Round 3: Barbosa, Oliver - Nyzhnyk, Illya | Semi-Slav Defense: Stoltz Variation | |
| Nov 7, 2024 | Williams | ½–½ | Nyzhnyk | Round 1: Williams, Justus - Nyzhnyk, Illya | Petrov's Defense: Cozio Attack | |
| Oct 19, 2024 | Williams | 0–1 | Nyzhnyk | Round 9: Williams, Justus - Nyzhnyk, Illya | Semi-Slav Defense: Marshall Gambit, Forgotten Variation | |
| Oct 17, 2024 | Nyzhnyk | ½–½ | Gazik | Round 8: Nyzhnyk, Illya - Gazik, Viktor | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Oct 17, 2024 | Harsha Bharathakoti | 0–1 | Nyzhnyk | Round 7: Harsha Bharathakoti - Nyzhnyk, Illya | Nimzo-Indian Defense: Three Knights Variation | |
| Oct 16, 2024 | Nyzhnyk | ½–½ | Corrales Jimenez | Round 6: Nyzhnyk, Illya - Corrales Jimenez, Fidel | Indian Defense: Anti-Grünfeld, Basman-Williams Attack | |
| Oct 15, 2024 | Nyzhnyk | 1–0 | Chen | Round 4: Nyzhnyk, Illya - Chen, Ryo | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Oct 15, 2024 | Rorrer | ½–½ | Nyzhnyk | Round 5: Rorrer, Grayson - Nyzhnyk, Illya | Slav Defense: Exchange Variation | |
| Oct 14, 2024 | Nyzhnyk | ½–½ | Torres Rosas | Round 2: Nyzhnyk, Illya - Torres Rosas, Luis Carlos | French Defense: MacCutcheon Variation, Lasker Variation | |
| Oct 13, 2024 | Eckert | 0–1 | Nyzhnyk | Round 1: Eckert, Doug - Nyzhnyk, Illya | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Jul 5, 2024 | Nyzhnyk | 1–0 | Lapan | 52nd Annual World Open | French Defense: Exchange Variation, Monte Carlo Variation | |
| Jul 5, 2024 | Nyzhnyk | * | Mendes Aaron Reeve | 52nd Annual World Open | ? | |
| Jul 4, 2024 | Nyzhnyk | * | Kretchetov | 52nd Annual World Open | ? | |
| Jul 4, 2024 | Shukla | 0–1 | Nyzhnyk | 52nd Annual World Open | Sicilian Defense: Scheveningen Variation, Classical Variation | |
| Aug 10, 2023 | Burke | ½–½ | Nyzhnyk | 2023 Summer Chess Classic | Group A | Petrov's Defense: Classical Attack, Mason-Showalter Variation | |
| Aug 9, 2023 | Nyzhnyk | 0–1 | Sadhwani | 2023 Summer Chess Classic | Group A | English Opening: King's English Variation | |
| Aug 8, 2023 | Nyzhnyk | ½–½ | Sasikiran | 2023 Summer Chess Classic | Group A | Slav Defense: Exchange Variation | |
| Aug 7, 2023 | Bok | ½–½ | Nyzhnyk | 2023 Summer Chess Classic | Group A | Slav Defense: Exchange Variation, Symmetrical Line | |
| Aug 6, 2023 | Nyzhnyk | ½–½ | Venkatesh | 2023 Summer Chess Classic | Group A | English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense | |
| Aug 5, 2023 | Swiercz | ½–½ | Nyzhnyk | 2023 Summer Chess Classic | Group A | Petrov's Defense: Modern Attack, Center Variation | |
| Aug 4, 2023 | Nyzhnyk | ½–½ | Mishra | 2023 Summer Chess Classic | Group A | Semi-Slav Defense: Quiet Variation | |
| Aug 3, 2023 | Theodorou | ½–½ | Nyzhnyk | 2023 Summer Chess Classic | Group A | Sicilian Defense: Moscow Variation, Main Line | |
| Aug 2, 2023 | Nyzhnyk | ½–½ | Hakobyan | 2023 Summer Chess Classic | Group A | Queen's Gambit Declined: Ragozin Defense | |
| Apr 13, 2023 | Nyzhnyk | ½–½ | Yakubboev | 2023 Spring Chess Classic | Group A | King's Indian Defense: Averbakh Variation, Flexible Defense | |
| Apr 12, 2023 | Dardha | ½–½ | Nyzhnyk | 2023 Spring Chess Classic | Group A | French Defense: King's Indian Attack | |
| Apr 11, 2023 | Nyzhnyk | ½–½ | Gledura | 2023 Spring Chess Classic | Group A | King's Indian Attack: Double Fianchetto | |
| Apr 10, 2023 | Mishra | ½–½ | Nyzhnyk | 2023 Spring Chess Classic | Group A | Petrov's Defense: Modern Attack | |
| Apr 9, 2023 | Nyzhnyk | ½–½ | Yoo | 2023 Spring Chess Classic | Group A | Bogo-Indian Defense: Retreat Variation | |
| Apr 8, 2023 | Quesada Perez | * | Nyzhnyk | 2023 Spring Chess Classic | Group A | Petrov's Defense: Kaufmann Attack | |
| Apr 7, 2023 | Nyzhnyk | ½–½ | Sevian | 2023 Spring Chess Classic | Group A | Catalan Opening: Open Defense | |
| Apr 6, 2023 | Bok | ½–½ | Nyzhnyk | 2023 Spring Chess Classic | Group A | Semi-Slav Defense: Stoltz Variation | |
| Apr 5, 2023 | Nyzhnyk | ½–½ | Swiercz | 2023 Spring Chess Classic | Group A | Catalan Opening: Closed | |
| Mar 12, 2023 | Nyzhnyk | 1–0 | Stearman | Saint Louis Super Swiss | Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack | |
| Mar 12, 2023 | Daggupati | ½–½ | Nyzhnyk | Saint Louis Super Swiss | Petrov's Defense: Classical Attack, Staunton Variation | |
| Nov 10, 2022 | Vidit | 1–0 | Nyzhnyk | 2022 Fall Chess Classic A | Slav Defense: Quiet Variation, Schallopp Defense | |
| Nov 9, 2022 | Nyzhnyk | 0–1 | Niemann | 2022 Fall Chess Classic A | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Nov 8, 2022 | Abasov | ½–½ | Nyzhnyk | 2022 Fall Chess Classic A | Sicilian Defense: Delayed Alapin Variation | |
| Nov 7, 2022 | Nyzhnyk | ½–½ | Nguyen | 2022 Fall Chess Classic A | Nimzo-Indian Defense | |
| Nov 6, 2022 | Yu | 1–0 | Nyzhnyk | 2022 Fall Chess Classic A | Petrov's Defense: Classical Attack, Marshall Variation | |
| Nov 5, 2022 | Nyzhnyk | ½–½ | Hakobyan | 2022 Fall Chess Classic A | King's Indian Attack: Pachman System | |
| Nov 4, 2022 | Theodorou | ½–½ | Nyzhnyk | 2022 Fall Chess Classic A | Slav Defense: Quiet Variation, Schallopp Defense | |
| Nov 3, 2022 | Nyzhnyk | 1–0 | Ganguly | 2022 Fall Chess Classic A | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Nov 2, 2022 | Nyzhnyk | ½–½ | Oparin | 2022 Fall Chess Classic A | English Opening: King's English Variation, Kramnik-Shirov Counterattack | |
| Jul 31, 2022 | Fedoseev | 1–0 | Nyzhnyk | Rapid-Chess-Championship-Week-23-KO | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Jul 30, 2022 | Nyzhnyk | 1–0 | Fandorine | Rapid-Chess-Championship-Week-23 | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line | |
| Jul 30, 2022 | Nyzhnyk | 1–0 | Niemann | Rapid-Chess-Championship-Week-23 | Bogo-Indian Defense: Retreat Variation | |
| Jul 30, 2022 | Nyzhnyk | 1–0 | Tabatabaei | Rapid-Chess-Championship-Week-23 | English Opening: Great Snake Variation | |