| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. V Kalinin vs Lahno |
| 1-0 | 31 |
2001 |
ch-UKR Women | B09 Pirc, Austrian Attack |
| 2. J Zawadzka vs Lahno |
| ½-½ | 27 |
2001 |
EYCC G14 | B09 Pirc, Austrian Attack |
| 3. K Pelletier vs Lahno |
| ½-½ | 66 |
2001 |
Wch U12 Girls | B07 Pirc |
| 4. A Kohut vs Lahno |
| 0-1 | 40 |
2001 |
EYCC G14 | B07 Pirc |
| 5. Z Gregorova vs Lahno |
| 0-1 | 55 |
2001 |
EU-chT U18 Girls | B09 Pirc, Austrian Attack |
| 6. K Iskenderova vs Lahno |
| 0-1 | 58 |
2001 |
EYCC G14 | B07 Pirc |
| 7. K Rohonyan vs Lahno |
| 0-1 | 27 |
2001 |
ch-UKR Women | B07 Pirc |
| 8. L Bogatyriova vs Lahno |
| ½-½ | 26 |
2002 |
UKR-ch U20 Girls | B09 Pirc, Austrian Attack |
| 9. Cansu Kilinc vs Lahno |
| 0-1 | 73 |
2002 |
EU-ch blitz (Women) 3rd | B07 Pirc |
| 10. C Peptan vs Lahno |
| 1-0 | 26 |
2002 |
EU-ch 3rd (Women) | B07 Pirc |
| 11. E Dolukhanova vs Lahno |
| ½-½ | 44 |
2002 |
UKR-ch U20 Girls | B07 Pirc |
| 12. I Gaponenko vs Lahno |
| ½-½ | 36 |
2002 |
EU-ch rapid (Women) 3rd | B09 Pirc, Austrian Attack |
| 13. D Fingerov vs Lahno |
| 1-0 | 44 |
2002 |
UKR-chT | B09 Pirc, Austrian Attack |
| 14. A Pridorozhni vs Lahno |
| ½-½ | 44 |
2002 |
Chigorin mem-A 10th | B07 Pirc |
| 15. G Dincok vs Lahno |
| 0-1 | 28 |
2002 |
EU-ch rapid (Women) 3rd | B08 Pirc, Classical |
| 16. V Aveskulov vs Lahno |
| 1-0 | 110 |
2002 |
UKR-chT | B08 Pirc, Classical |
| 17. K Bryzgalin vs Lahno |
| 0-1 | 27 |
2002 |
Chigorin mem-A 10th | B07 Pirc |
| 18. F Shafruddin vs Lahno |
 | 0-1 | 21 |
2002 |
World ol U16 | B09 Pirc, Austrian Attack |
| 19. O Vozovic vs Lahno |
| 0-1 | 63 |
2002 |
UKR-ch U20 Girls | B07 Pirc |
| 20. N Zdebskaja vs Lahno |
| 1-0 | 57 |
2002 |
EU-ch blitz (Women) 3rd | B07 Pirc |
| 21. A Tairova vs Lahno |
| 0-1 | 48 |
2002 |
Int Youth Games U14 Girls | B08 Pirc, Classical |
| 22. Potkin vs Lahno |
| 1-0 | 41 |
2003 |
4th IECC | B08 Pirc, Classical |
| 23. O Boricsev vs Lahno |
| ½-½ | 10 |
2003 |
Alushta Pobeda | B08 Pirc, Classical |
| 24. E Andreev vs Lahno |
| ½-½ | 12 |
2003 |
Kramatorsk | B09 Pirc, Austrian Attack |
| 25. Savchenko vs Lahno |
| 1-0 | 65 |
2003 |
Donetsk Region-ch | B08 Pirc, Classical |