| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 601. V Onyshchuk vs A Vovk |
| 1-0 | 54 | 2019 | Hungarian Team Championship 2018/19 | C42 Petrov Defense |
| 602. O Mihok vs V Onyshchuk |
| ½-½ | 72 | 2019 | Hungarian Team Championship 2018/19 | B09 Pirc, Austrian Attack |
| 603. V Onyshchuk vs Saric |
| 0-1 | 77 | 2019 | Hungarian Team Championship 2018/19 | B23 Sicilian, Closed |
| 604. Y Krykun vs V Onyshchuk |
| ½-½ | 50 | 2019 | European Championship | E67 King's Indian, Fianchetto |
| 605. V Onyshchuk vs N Saraci |
| 1-0 | 40 | 2019 | European Championship | B70 Sicilian, Dragon Variation |
| 606. G Quparadze vs V Onyshchuk |
| 1-0 | 62 | 2019 | European Championship | B09 Pirc, Austrian Attack |
| 607. V Onyshchuk vs A Colovic |
| 1-0 | 41 | 2019 | European Championship | B20 Sicilian |
| 608. R Ruck vs V Onyshchuk |
| ½-½ | 49 | 2019 | European Championship | B08 Pirc, Classical |
| 609. V Onyshchuk vs T Fakhrutdinov |
| 1-0 | 70 | 2019 | European Championship | C65 Ruy Lopez, Berlin Defense |
| 610. S Lobanov vs V Onyshchuk |
| 0-1 | 34 | 2019 | European Championship | B09 Pirc, Austrian Attack |
| 611. V Onyshchuk vs E Can |
| 0-1 | 47 | 2019 | European Championship | B20 Sicilian |
| 612. P L Basso vs V Onyshchuk |
 | 0-1 | 41 | 2019 | European Championship | B09 Pirc, Austrian Attack |
| 613. V Onyshchuk vs K Stupak |
| ½-½ | 53 | 2019 | European Championship | C01 French, Exchange |
| 614. M Demidov vs V Onyshchuk |
| ½-½ | 72 | 2019 | European Championship | B09 Pirc, Austrian Attack |
| 615. Hracek vs V Onyshchuk |
| ½-½ | 32 | 2019 | Hungarian Team Championship 2018/19 | B07 Pirc |
| 616. E Sayadyan vs V Onyshchuk |
| 0-1 | 39 | 2019 | Asrian Memorial | A04 Reti Opening |
| 617. V Onyshchuk vs A M Sargsyan |
| 1-0 | 34 | 2019 | Asrian Memorial | A07 King's Indian Attack |
| 618. D Shahinyan vs V Onyshchuk |
| 0-1 | 82 | 2019 | Asrian Memorial | A49 King's Indian, Fianchetto without c4 |
| 619. V Onyshchuk vs V Baghdasaryan |
| 1-0 | 46 | 2019 | Asrian Memorial | A04 Reti Opening |
| 620. H Hayrapetyan vs V Onyshchuk |
| ½-½ | 60 | 2019 | Asrian Memorial | C18 French, Winawer |
| 621. V Onyshchuk vs Martirosyan |
| 1-0 | 33 | 2019 | Asrian Memorial | C12 French, McCutcheon |
| 622. S Sargsyan vs V Onyshchuk |
| 1-0 | 32 | 2019 | Asrian Memorial | E70 King's Indian |
| 623. V Onyshchuk vs A Davtyan |
| 1-0 | 58 | 2019 | Asrian Memorial | C77 Ruy Lopez |
| 624. V Onyshchuk vs A Chibukhchian |
| ½-½ | 25 | 2019 | Asrian Memorial | B20 Sicilian |
| 625. V Onyshchuk vs V Kazakouski |
| 1-0 | 52 | 2019 | Tal Memorial Rapid | C77 Ruy Lopez |
Kibitzing
