| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. I Nyzhnyk vs G Popilski |
| 0-1 | 41 |
2005 |
Wch U12 | B23 Sicilian, Closed |
| 2. I Nyzhnyk vs W So |
 | 0-1 | 33 |
2005 |
Wch U12 | B23 Sicilian, Closed |
| 3. I Nyzhnyk vs N Zhornik |
| 0-1 | 65 |
2005 |
UKR-ch sf | B55 Sicilian, Prins Variation, Venice Attack |
| 4. I Nyzhnyk vs K Nikologorskiy |
| 0-1 | 27 |
2005 |
EU-ch U10 | B55 Sicilian, Prins Variation, Venice Attack |
| 5. I Nyzhnyk vs Robson |
 | 1-0 | 43 |
2006 |
Wch U12 | B54 Sicilian |
| 6. I Nyzhnyk vs T Harutyunian |
| 1-0 | 32 |
2006 |
EU-ch U10 | B76 Sicilian, Dragon, Yugoslav Attack |
| 7. I Nyzhnyk vs P Kruglyakov |
| 0-1 | 49 |
2006 |
Evpatoria tt U20 | B33 Sicilian |
| 8. I Nyzhnyk vs L Kernazhitsky |
| 1-0 | 41 |
2007 |
Nabokov mem 5th | B32 Sicilian |
| 9. I Nyzhnyk vs K Grigoryan |
 | 1-0 | 37 |
2007 |
17th EU-ch U12 Boys | B29 Sicilian, Nimzovich-Rubinstein |
| 10. I Nyzhnyk vs D Dubov |
| 1-0 | 47 |
2007 |
17th EU-ch U12 Boys | B40 Sicilian |
| 11. I Nyzhnyk vs R Kurayan |
| ½-½ | 59 |
2007 |
UKR-ch U14 | B54 Sicilian |
| 12. I Nyzhnyk vs P Carlsson |
 | ½-½ | 31 |
2008 |
Reykjavik Open | B76 Sicilian, Dragon, Yugoslav Attack |
| 13. I Nyzhnyk vs V Shishkin |
| ½-½ | 50 |
2008 |
6th V.Nabokov Memorial | B61 Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2 |
| 14. I Nyzhnyk vs M Yilmaz |
 | 1-0 | 60 |
2008 |
EU-ch U16 18th | B54 Sicilian |
| 15. I Nyzhnyk vs V Lyaskovsky |
 | 1-0 | 59 |
2008 |
EU-ch U16 18th | B32 Sicilian |
| 16. I Nyzhnyk vs S Khader |
| 1-0 | 36 |
2008 |
Cup Independence - G | B32 Sicilian |
| 17. I Nyzhnyk vs S Kristjansson |
| ½-½ | 29 |
2008 |
Reykjavik Open | B40 Sicilian |
| 18. I Nyzhnyk vs I Golichenko |
| 1-0 | 57 |
2008 |
6th V.Nabokov Memorial | B54 Sicilian |
| 19. I Nyzhnyk vs Damljanovic |
 | 1-0 | 79 |
2009 |
10th European Individual Championship | B54 Sicilian |
| 20. I Nyzhnyk vs T L Petrosian |
 | 0-1 | 33 |
2009 |
10th European Individual Championship | B54 Sicilian |
| 21. I Nyzhnyk vs D Reinderman |
 | ½-½ | 55 |
2009 |
Groningen Chess Festival | B76 Sicilian, Dragon, Yugoslav Attack |
| 22. I Nyzhnyk vs A Pijpers |
 | 1-0 | 40 |
2009 |
Groningen Chess Festival | B54 Sicilian |
| 23. I Nyzhnyk vs V Hamitevici |
| ½-½ | 43 |
2010 |
World Junior Championship | B54 Sicilian |
| 24. I Nyzhnyk vs Dreev |
| ½-½ | 72 |
2010 |
Reykjavik Open | B61 Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2 |
| 25. I Nyzhnyk vs Y Zhou |
| 1-0 | 49 |
2010 |
World Junior Championship | B33 Sicilian |