| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. A Stefanova vs Kosteniuk |
 | 0-1 | 78 |
2004 |
European Championship | D10 Queen's Gambit Declined Slav |
| 2. A Stefanova vs Kosteniuk |
| 0-1 | 34 |
2004 |
36th Olympiad, Women | B63 Sicilian, Richter-Rauzer Attack |
| 3. A Stefanova vs Kosteniuk |
| ½-½ | 32 |
2005 |
15th European Team Championship (Women) | D47 Queen's Gambit Declined Semi-Slav |
| 4. A Stefanova vs Kosteniuk |
| ½-½ | 26 |
2005 |
Corus Tournament: Group B | E04 Catalan, Open, 5.Nf3 |
| 5. Kosteniuk vs A Stefanova |
| 1-0 | 38 |
2005 |
North Urals Cup | C78 Ruy Lopez |
| 6. Kosteniuk vs A Stefanova |
| 0-1 | 27 |
2006 |
37th Chess Olympiad: Women | C78 Ruy Lopez |
| 7. Kosteniuk vs A Stefanova |
| ½-½ | 37 |
2006 |
Cap D'Agde | C77 Ruy Lopez |
| 8. Kosteniuk vs A Stefanova |
| 1-0 | 52 |
2007 |
European Team Chess Championships (Women) | C78 Ruy Lopez |
| 9. Kosteniuk vs A Stefanova |
| 1-0 | 63 |
2008 |
Mindsports | C78 Ruy Lopez |
| 10. A Stefanova vs Kosteniuk |
| 0-1 | 57 |
2008 |
Mindsports | A45 Queen's Pawn Game |
| 11. Kosteniuk vs A Stefanova |
| 1-0 | 40 |
2008 |
Mindsports | C78 Ruy Lopez |
| 12. Kosteniuk vs A Stefanova |
| 0-1 | 48 |
2008 |
Mindsports | C67 Ruy Lopez |
| 13. A Stefanova vs Kosteniuk |
| 1-0 | 40 |
2008 |
Mindsports | A45 Queen's Pawn Game |
| 14. Kosteniuk vs A Stefanova |
| 0-1 | 42 |
2010 |
Russian Team Championships (Women) | C67 Ruy Lopez |
| 15. A Stefanova vs Kosteniuk |
| ½-½ | 89 |
2011 |
European Club Cup (Women) | D59 Queen's Gambit Declined, Tartakower |
| 16. A Stefanova vs Kosteniuk |
| ½-½ | 24 |
2011 |
SportAccord Mind Games (Blitz, Women) | A46 Queen's Pawn Game |
| 17. A Stefanova vs Kosteniuk |
| ½-½ | 66 |
2011 |
FIDE Women's Grand Prix | E15 Queen's Indian |
| 18. Kosteniuk vs A Stefanova |
| 0-1 | 64 |
2011 |
FIDE Women's Grand Prix Nalchik | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 19. A Stefanova vs Kosteniuk |
| 0-1 | 42 |
2011 |
Russian Team Championships (Women) | A13 English |
| 20. Kosteniuk vs A Stefanova |
| ½-½ | 68 |
2012 |
ACP Women Cup Rapid | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 21. A Stefanova vs Kosteniuk |
| 0-1 | 102 |
2012 |
SportAccord World Mind Games (Women's Blitz) | A07 King's Indian Attack |
| 22. A Stefanova vs Kosteniuk |
| 1-0 | 41 |
2012 |
Women's World Rapid Championship | A07 King's Indian Attack |
| 23. A Stefanova vs Kosteniuk |
| ½-½ | 45 |
2012 |
28th European Club Cup (Women) | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 24. Kosteniuk vs A Stefanova |
| 1-0 | 39 |
2012 |
European Individual Women's Rapid Chess Championship | B01 Scandinavian |
| 25. Kosteniuk vs A Stefanova |
| ½-½ | 57 |
2012 |
FIDE Women's Grand Prix Kazan | D45 Queen's Gambit Declined Semi-Slav |
