| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Onischuk vs A Kovacevic |
 | 1-0 | 12 |
1991 |
It (open) | A27 English, Three Knights System |
| 2. Onischuk vs B Lengyel |
| 1-0 | 35 |
1993 |
Budapest FS07 GM | A28 English |
| 3. Onischuk vs T Fogarasi |
| 1-0 | 75 |
1993 |
Budapest FS07 GM | A16 English |
| 4. R Rabiega vs Onischuk |
| 1-0 | 21 |
1993 |
It (open) | C55 Two Knights Defense |
| 5. Onischuk vs S Smagin |
| 1-0 | 43 |
1993 |
Dortmund op-A | D35 Queen's Gambit Declined |
| 6. Onischuk vs Hertneck |
| 1-0 | 102 |
1994 |
Moscow ol (Men) | A31 English, Symmetrical, Benoni Formation |
| 7. Onischuk vs Vyzmanavin |
| 1-0 | 61 |
1994 |
Alushta Cat.14 | A87 Dutch, Leningrad, Main Variation |
| 8. Sveshnikov vs Onischuk |
| 1-0 | 51 |
1994 |
Alushta Cat.14 | C45 Scotch Game |
| 9. Blatny vs Onischuk |
| 1-0 | 82 |
1994 |
BL2-N 9394 | A12 English with b3 |
| 10. Rublevsky vs Onischuk |
| 1-0 | 23 |
1994 |
Moscow olm | C47 Four Knights |
| 11. Onischuk vs V Moskalenko |
| 1-0 | 42 |
1994 |
Alushta Cat.14 | A84 Dutch |
| 12. Morozevich vs Onischuk |
| 1-0 | 32 |
1994 |
Alushta Cat.14 | C59 Two Knights |
| 13. Timman vs Onischuk |
| 1-0 | 40 |
1995 |
Wijk aan Zee | C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 |
| 14. Chekhov vs Onischuk |
| 1-0 | 39 |
1995 |
BL2-N 9596 | E32 Nimzo-Indian, Classical |
| 15. Y Kruppa vs Onischuk |
| 1-0 | 54 |
1995 |
Nikolaev zt | C78 Ruy Lopez |
| 16. Khalifman vs Onischuk |
| 1-0 | 39 |
1995 |
It (active) | E12 Queen's Indian |
| 17. Onischuk vs Pavasovic |
| 1-0 | 41 |
1995 |
Wch U20 | C42 Petrov Defense |
| 18. Ivanchuk vs Onischuk |
| 1-0 | 43 |
1995 |
Yalta 25' | A13 English |
| 19. Z Almasi vs Onischuk |
| 1-0 | 41 |
1996 |
Biel SKA | C62 Ruy Lopez, Old Steinitz Defense |
| 20. Morozevich vs Onischuk |
| 1-0 | 38 |
1996 |
PCA Qualifier g/25 Moscow RUS | C59 Two Knights |
| 21. Onischuk vs J M Hodgson |
| 1-0 | 45 |
1996 |
Groningen | B76 Sicilian, Dragon, Yugoslav Attack |
| 22. Glek vs Onischuk |
| 1-0 | 74 |
1996 |
Biel SKA | C46 Three Knights |
| 23. Onischuk vs Miles |
| 1-0 | 25 |
1996 |
Hoogovens (B) | B00 Uncommon King's Pawn Opening |
| 24. Akopian vs Onischuk |
| 1-0 | 34 |
1996 |
Groningen | A07 King's Indian Attack |
| 25. Onischuk vs Miles |
| 1-0 | 47 |
1996 |
It (cat.16) | C67 Ruy Lopez |
