| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Lahno vs A Muzychuk |
| ½-½ | 66 |
1997 |
Wch U10 Girls | B29 Sicilian, Nimzovich-Rubinstein |
| 2. Lahno vs Solene Algaba |
| 1-0 | 29 |
1998 |
Wch U10 Girls | B58 Sicilian |
| 3. Lahno vs S Vassilkova |
| 0-1 | 45 |
1998 |
Wch U10 Girls | B83 Sicilian |
| 4. Lahno vs N Darbinian |
| 0-1 | 54 |
1999 |
Wch U10 Girls | B74 Sicilian, Dragon, Classical |
| 5. Lahno vs Luong Huyen Ngoc |
| 1-0 | 43 |
1999 |
Wch U10 Girls | B70 Sicilian, Dragon Variation |
| 6. Lahno vs E Makovetskaya |
| 0-1 | 41 |
2000 |
UKR-ch (Women) | B92 Sicilian, Najdorf, Opocensky Variation |
| 7. Lahno vs V Jianu |
| 0-1 | 46 |
2000 |
Artek ol U16 | B33 Sicilian |
| 8. Lahno vs Irina Son |
| ½-½ | 33 |
2000 |
UKR-ch (Women) | B42 Sicilian, Kan |
| 9. Lahno vs Y Hamrakulova |
| 1-0 | 45 |
2000 |
Wch U12 Girls | B74 Sicilian, Dragon, Classical |
| 10. Lahno vs A Pastukh |
| 1-0 | 30 |
2000 |
UKR-ch U12 Girls | B74 Sicilian, Dragon, Classical |
| 11. Lahno vs V Gurevich |
| 0-1 | 27 |
2000 |
Ukrainian Team ch | B92 Sicilian, Najdorf, Opocensky Variation |
| 12. Lahno vs L Ross |
| ½-½ | 37 |
2000 |
Wch U12 Girls | B74 Sicilian, Dragon, Classical |
| 13. Lahno vs N Kovtonjuk |
| 1-0 | 49 |
2000 |
UKR-ch U12 Girls | B84 Sicilian, Scheveningen |
| 14. Lahno vs K Jastreb |
| 0-1 | 53 |
2000 |
Ukrainian Team ch | B83 Sicilian |
| 15. Lahno vs E Machalova |
| ½-½ | 23 |
2000 |
Wch U12 Girls | B90 Sicilian, Najdorf |
| 16. Lahno vs Olena Zavgorodnya |
| 1-0 | 74 |
2000 |
UKR-ch (Women) | B74 Sicilian, Dragon, Classical |
| 17. Lahno vs E Andreev |
| 0-1 | 33 |
2000 |
Ukrainian Team ch | B74 Sicilian, Dragon, Classical |
| 18. Lahno vs E Partac |
| ½-½ | 53 |
2000 |
Artek ol U16 | B40 Sicilian |
| 19. Lahno vs A Gasik |
 | 1-0 | 17 |
2001 |
EYCC G14 | B29 Sicilian, Nimzovich-Rubinstein |
| 20. Lahno vs Natalia Gayova |
| ½-½ | 30 |
2001 |
UKR tt U18 3rd | B74 Sicilian, Dragon, Classical |
| 21. Lahno vs A Zozulia |
| 0-1 | 49 |
2001 |
ch-UKR Women | B40 Sicilian |
| 22. Lahno vs A Filipa Baptista |
| 1-0 | 45 |
2001 |
Wch U12 Girls | B90 Sicilian, Najdorf |
| 23. Lahno vs M Malinovskaja |
| 1-0 | 37 |
2001 |
UKR-ch U12W | B40 Sicilian |
| 24. Lahno vs N Zdebskaja |
| 1-0 | 52 |
2001 |
ch-UKR Women | B48 Sicilian, Taimanov Variation |
| 25. Lahno vs A Motoc |
| 1-0 | 37 |
2001 |
EU-chT U18 Girls | B90 Sicilian, Najdorf |
