| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Kosteniuk vs B Farhat |
 | 1-0 | 43 |
1994 |
Wch U10 Girls | B71 Sicilian, Dragon, Levenfish Variation |
| 2. Kosteniuk vs N Pkhakadze |
| 1-0 | 41 |
1994 |
Wch U10 Girls | D35 Queen's Gambit Declined |
| 3. E Mirzoeva vs Kosteniuk |
| 0-1 | 70 |
1996 |
Cup G.Kasparov | C26 Vienna |
| 4. Kosteniuk vs N Kosintseva |
| 1-0 | 68 |
1996 |
Ch World (cadets) (under 12) (g) | C29 Vienna Gambit |
| 5. A Yangel vs Kosteniuk |
| 0-1 | 33 |
1997 |
RUS-ch (Women) | A88 Dutch, Leningrad, Main Variation with c6 |
| 6. M Perez Candelario vs Kosteniuk |
| 0-1 | 27 |
1997 |
It (open) (juniors) | D03 Torre Attack (Tartakower Variation) |
| 7. Bosboom-Lanchava vs Kosteniuk |
| 0-1 | 28 |
1998 |
Olympiad (w) | A41 Queen's Pawn Game (with ...d6) |
| 8. Kosteniuk vs J Kochetkova |
| 1-0 | 37 |
1998 |
Ch Russia (w) (1 liga) | B20 Sicilian |
| 9. Kosteniuk vs M Lomineishvili |
| 1-0 | 26 |
1999 |
It (w) | B40 Sicilian |
| 10. Kosteniuk vs C P Gouw |
| 1-0 | 18 |
2000 |
Corus | C00 French Defense |
| 11. Kosteniuk vs D Garces |
| 1-0 | 34 |
2000 |
It (open) | B12 Caro-Kann Defense |
| 12. G J Ludden vs Kosteniuk |
| 0-1 | 44 |
2000 |
Corus | A87 Dutch, Leningrad, Main Variation |
| 13. Kosteniuk vs E Shaposhnikov |
| 1-0 | 40 |
2000 |
Chigorin Memorial | B85 Sicilian, Scheveningen, Classical |
| 14. Kosteniuk vs Stellwagen |
| 1-0 | 31 |
2000 |
Corus | C00 French Defense |
| 15. Kosteniuk vs C Werner |
| 1-0 | 42 |
2000 |
Corus | C28 Vienna Game |
| 16. C Moshina vs Kosteniuk |
| 0-1 | 37 |
2001 |
2nd ch-EUR Women | B62 Sicilian, Richter-Rauzer |
| 17. Kosteniuk vs Xu Yuanyuan |
| 1-0 | 36 |
2001 |
CHN-RUS Summit Juniors | B18 Caro-Kann, Classical |
| 18. A Galliamova vs Kosteniuk |
| 0-1 | 46 |
2001 |
FIDE WCh Women KO | B62 Sicilian, Richter-Rauzer |
| 19. Kosteniuk vs L Simon |
| 1-0 | 23 |
2001 |
17th Open | C60 Ruy Lopez |
| 20. Kosteniuk vs R Mamedova |
| 1-0 | 43 |
2001 |
2nd ch-EUR Women | C03 French, Tarrasch |
| 21. S Shamugia vs Kosteniuk |
| 0-1 | 48 |
2001 |
Chigorin mem open | B62 Sicilian, Richter-Rauzer |
| 22. Kosteniuk vs Y Xu |
| 1-0 | 45 |
2001 |
FIDE WCh Women KO | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 23. B Zueger vs Kosteniuk |
| 0-1 | 38 |
2001 |
17th Open | D10 Queen's Gambit Declined Slav |
| 24. E Ghaem Maghami vs Kosteniuk |
| 0-1 | 22 |
2001 |
Master Open | D33 Queen's Gambit Declined, Tarrasch |
| 25. Kosteniuk vs Zhu Chen |
| 1-0 | 38 |
2001 |
FIDE WCh Women KO | B90 Sicilian, Najdorf |
