| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Kosteniuk vs N Pkhakadze |
| 1-0 | 41 | 1994 | Wch U10 Girls | D35 Queen's Gambit Declined |
| 2. Kosteniuk vs B Farhat |
 | 1-0 | 43 | 1994 | Wch U10 Girls | B71 Sicilian, Dragon, Levenfish Variation |
| 3. Kosteniuk vs S Cherednichenko |
| 0-1 | 40 | 1994 | Wch U10 Girls | B06 Robatsch |
| 4. Kosteniuk vs L Javakhishvili |
| ½-½ | 32 | 1996 | EU-ch U12 Girls | B06 Robatsch |
| 5. K Rybenko vs Kosteniuk |
| 1-0 | 42 | 1996 | Volgograd op | C45 Scotch Game |
| 6. Kosteniuk vs V Belov |
| 0-1 | 79 | 1996 | Kasparov Cup op | B33 Sicilian |
| 7. Kosteniuk vs L Kritz |
| 0-1 | 27 | 1996 | Moscow Open Championship | C29 Vienna Gambit |
| 8. Kosteniuk vs DA Iotchis |
| 1-0 | 50 | 1996 | Moscow Open Championship | C05 French, Tarrasch |
| 9. Kosteniuk vs E Najer |
| 0-1 | 31 | 1996 | Moscow Open Championship | C61 Ruy Lopez, Bird's Defense |
| 10. E Mirzoeva vs Kosteniuk |
| 0-1 | 70 | 1996 | Kasparov Cup op | C26 Vienna |
| 11. A Riazantsev vs Kosteniuk |
| 1-0 | 75 | 1996 | Moscow Open Championship | A07 King's Indian Attack |
| 12. A Lundina vs Kosteniuk |
| ½-½ | 28 | 1996 | Moscow Open Championship | A10 English |
| 13. A P Abramov vs Kosteniuk |
| 0-1 | 84 | 1996 | Moscow Open Championship | A10 English |
| 14. M Bereslavsky vs Kosteniuk |
| ½-½ | 54 | 1996 | Moscow Open Championship | B30 Sicilian |
| 15. Kosteniuk vs V Baikov |
| 0-1 | 37 | 1996 | Moscow Open Championship | B57 Sicilian |
| 16. Kosteniuk vs B Grachev |
| 1-0 | 61 | 1996 | Moscow Open Championship | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 17. A Mitenkov vs Kosteniuk |
| ½-½ | 78 | 1996 | Moscow Open Championship | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 18. N Kosintseva vs Kosteniuk |
| ½-½ | 55 | 1996 | EU-ch U12 Girls | B22 Sicilian, Alapin |
| 19. Kosteniuk vs L Javakhishvili |
| 1-0 | 68 | 1996 | Wch U12 Girls | B06 Robatsch |
| 20. Kosteniuk vs N Kosintseva |
| 1-0 | 68 | 1996 | Wch U12 Girls | C29 Vienna Gambit |
| 21. N Seferjan vs Kosteniuk |
| 1-0 | 51 | 1997 | Pripis mem | B22 Sicilian, Alapin |
| 22. M Perez Candelario vs Kosteniuk |
| 0-1 | 27 | 1997 | It (open) (juniors) | D03 Torre Attack (Tartakower Variation) |
| 23. E Vorobiov vs Kosteniuk |
| 1-0 | 66 | 1997 | Pripis mem | B76 Sicilian, Dragon, Yugoslav Attack |
| 24. A Yangel vs Kosteniuk |
| 0-1 | 33 | 1997 | RUS-ch (Women) | A88 Dutch, Leningrad, Main Variation with c6 |
| 25. Kosteniuk vs J Movsesian |
| 1-0 | 37 | 1998 | Ch Russia (w) (1 liga) | B20 Sicilian |
Kibitzing
