| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. D Rogozenko vs Onischuk |
| 0-1 | 37 |
1993 |
EU-ch U18 | E20 Nimzo-Indian |
| 2. Chekhov vs Onischuk |
| 1-0 | 39 |
1995 |
BL2-N 9596 | E32 Nimzo-Indian, Classical |
| 3. Shirov vs Onischuk |
 | 1-0 | 50 |
1997 |
Fontys | E32 Nimzo-Indian, Classical |
| 4. E Arlandi vs Onischuk |
| ½-½ | 24 |
1999 |
EU-chT (Men) | E32 Nimzo-Indian, Classical |
| 5. Yusupov vs Onischuk |
| ½-½ | 26 |
1999 |
Bundesliga 1998/99, Germany | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 6. Ashley vs Onischuk |
| ½-½ | 51 |
2000 |
Corus | E46 Nimzo-Indian |
| 7. Serper vs Onischuk |
| 1-0 | 60 |
2000 |
Cap d'Agde-B | E32 Nimzo-Indian, Classical |
| 8. Agrest vs Onischuk |
| 0-1 | 38 |
2000 |
FIDE World Ch | E39 Nimzo-Indian, Classical, Pirc Variation |
| 9. Van der Sterren vs Onischuk |
| ½-½ | 28 |
2001 |
Bundesliga 2000-1 | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 10. Jacimovic vs Onischuk |
| 0-1 | 28 |
2001 |
ECC | E32 Nimzo-Indian, Classical |
| 11. Obodchuk vs Onischuk |
| ½-½ | 47 |
2001 |
Karpov It | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 12. Obodchuk vs Onischuk |
| 0-1 | 33 |
2002 |
3rd Karpov It | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 13. Bareev vs Onischuk |
| 1-0 | 45 |
2002 |
FIDE Moscow Gran Prix | E32 Nimzo-Indian, Classical |
| 14. A Aleksandrov vs Onischuk |
| 0-1 | 31 |
2002 |
3rd Karpov It | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 15. Kaidanov vs Onischuk |
| 1-0 | 41 |
2002 |
11th Open | E28 Nimzo-Indian, Samisch Variation |
| 16. S Volkov vs Onischuk |
| 1-0 | 28 |
2005 |
Russian Team Championship | E46 Nimzo-Indian |
| 17. L Wellington vs Onischuk |
 | 0-1 | 18 |
2005 |
24th OCF NAO-Oklahoma | E30 Nimzo-Indian, Leningrad |
| 18. Bu Xiangzhi vs Onischuk |
 | ½-½ | 64 |
2005 |
World Team Championship | E32 Nimzo-Indian, Classical |
| 19. Granda-Zuniga vs Onischuk |
| ½-½ | 54 |
2005 |
American Continental Championship | E46 Nimzo-Indian |
| 20. Serper vs Onischuk |
 | 0-1 | 49 |
2006 |
US Championship 2006 | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 21. Eljanov vs Onischuk |
| 1-0 | 44 |
2006 |
Montreal Empresa International | E34 Nimzo-Indian, Classical, Noa Variation |
| 22. Gulko vs Onischuk |
| ½-½ | 70 |
2006 |
Mayor's Cup Invitational | E51 Nimzo-Indian, 4.e3 |
| 23. Istratescu vs Onischuk |
| ½-½ | 21 |
2007 |
8th Poikovsky Karpov Tournament | E34 Nimzo-Indian, Classical, Noa Variation |
| 24. Carlsen vs Onischuk |
 | ½-½ | 54 |
2007 |
Biel Blitz Playoff | E36 Nimzo-Indian, Classical |
| 25. D Ippolito vs Onischuk |
 | 0-1 | 40 |
2008 |
US Championship | E32 Nimzo-Indian, Classical |