| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Onischuk vs Savon |
| 0-1 | 26 |
1992 |
Alushta | E32 Nimzo-Indian, Classical |
| 2. Onischuk vs Short |
| 0-1 | 66 |
1995 |
Hoogovens Tournament Wijk aan Zee NED | E34 Nimzo-Indian, Classical, Noa Variation |
| 3. Onischuk vs Karpov |
| 0-1 | 33 |
1996 |
It (cat.16), Biel (Switzerland) | E41 Nimzo-Indian |
| 4. Onischuk vs Van der Wiel |
| 1-0 | 34 |
2000 |
Corus | E32 Nimzo-Indian, Classical |
| 5. Onischuk vs Tiviakov |
| ½-½ | 25 |
2000 |
Corus | E32 Nimzo-Indian, Classical |
| 6. Onischuk vs Anand |
| ½-½ | 16 |
2000 |
Bastia Open | E34 Nimzo-Indian, Classical, Noa Variation |
| 7. Onischuk vs Beliavsky |
| ½-½ | 46 |
2001 |
Bundesliga 2000-1 | E32 Nimzo-Indian, Classical |
| 8. Onischuk vs Yermolinsky |
| 1-0 | 39 |
2001 |
Continental Open | E52 Nimzo-Indian, 4.e3, Main line with ...b6 |
| 9. Onischuk vs Browne |
| 1-0 | 58 |
2001 |
Continental Open | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 10. Onischuk vs Y Pelletier |
| 1-0 | 28 |
2002 |
Cap dAgde Chess Festival | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 11. Onischuk vs Kasimdzhanov |
| 0-1 | 41 |
2002 |
FIDE Moscow Gran Prix | E52 Nimzo-Indian, 4.e3, Main line with ...b6 |
| 12. Onischuk vs Lautier |
| ½-½ | 31 |
2002 |
FIDE Moscow Gran Prix | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 13. Onischuk vs G Vescovi |
 | 1-0 | 25 |
2002 |
3rd Karpov It | E53 Nimzo-Indian, 4.e3 |
| 14. Onischuk vs D Rogozenko |
| ½-½ | 21 |
2002 |
18th Open | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 15. Onischuk vs Romanishin |
 | 1-0 | 29 |
2003 |
4th It | E34 Nimzo-Indian, Classical, Noa Variation |
| 16. Onischuk vs A Belozerov |
| 1-0 | 43 |
2003 |
European Clubs Cup (Men) | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 17. Onischuk vs I Ibragimov |
| ½-½ | 58 |
2003 |
National Chess Congress | E32 Nimzo-Indian, Classical |
| 18. Onischuk vs S Giardelli |
| 1-0 | 35 |
2003 |
Torneo Continental Americano | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 19. Onischuk vs Lautier |
| ½-½ | 24 |
2003 |
4th Karpov It | E32 Nimzo-Indian, Classical |
| 20. Onischuk vs Grischuk |
| ½-½ | 25 |
2004 |
5th Karpov It Tournament | E32 Nimzo-Indian, Classical |
| 21. Onischuk vs D Gurevich |
 | 1-0 | 26 |
2004 |
Chessmaster US Championships 2005 | E38 Nimzo-Indian, Classical, 4...c5 |
| 22. Onischuk vs N Vekshenkov |
 | 1-0 | 57 |
2004 |
Russia Team Championship | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 23. Onischuk vs Kharlov |
| ½-½ | 43 |
2004 |
Russia Team Championship | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 24. Onischuk vs I Ibragimov |
| 1-0 | 43 |
2006 |
Montreal Empresa International | E32 Nimzo-Indian, Classical |
| 25. Onischuk vs V Zvjaginsev |
| ½-½ | 28 |
2006 |
7th Poikovsky Tournament | E54 Nimzo-Indian, 4.e3, Gligoric System |