| Apr 2, 2026 | Puuska | ½–½ | Lehtinen | Round 9: Puuska, Heini - Lehtinen, Helja | Yusupov-Rubinstein System | |
| Apr 2, 2026 | Lehtinen | 1–0 | Zhu | Round 8: Lehtinen, Helja - Zhu, Stella | Zukertort Opening: Reversed Grünfeld | |
| Apr 2, 2026 | Paasikangas | 1–0 | Lehtinen | Round 7: Paasikangas, Johanna - Lehtinen, Helja | Sicilian Defense: Kan Variation, Wing Attack | |
| Apr 2, 2026 | Lehtinen | 1–0 | Pelander | Round 6: Lehtinen, Helja - Pelander, Pauliina | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Apr 2, 2026 | Bhaumik | 0–1 | Lehtinen | Round 5: Bhaumik, Mehr - Lehtinen, Helja | Sicilian Defense: Closed | |
| Apr 2, 2026 | Lehtinen | 1–0 | Yusuphanova | Round 4: Lehtinen, Helja - Yusuphanova, Sadi-Carolin | Indian Defense: Wade-Tartakower Defense | |
| Apr 2, 2026 | Bederdin | 1–0 | Lehtinen | Round 2: Bederdin, Lilja - Lehtinen, Helja | Bogo-Indian Defense: Nimzowitsch Variation | |
| Apr 2, 2026 | Lehtinen | ½–½ | Keinanen | Round 1: Lehtinen, Helja - Keinanen, Anastasia | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Mar 26, 2026 | Lehtinen | ½–½ | Rinne | Round 3: Lehtinen, Helja - Rinne, Heini | Catalan Opening: Open Defense | |
| Mar 1, 2026 | Puittinen | ½–½ | Lehtinen | new tournament description | Sicilian Defense: Alapin Variation | |
| Mar 1, 2026 | Lehtinen | 0–1 | Vesa | new tournament description | Nimzo-Indian Defense: St. Petersburg Variation | |
| Feb 28, 2026 | Tuominen | ½–½ | Lehtinen | new tournament description | Bogo-Indian Defense: Nimzowitsch Variation | |
| Feb 28, 2026 | Lehtinen | ½–½ | Hakulinen | new tournament description | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Feb 27, 2026 | Paasikangas | 1–0 | Lehtinen | new tournament description | Sicilian Defense: Najdorf Variation, English Attack | |
| Feb 27, 2026 | Lehtinen | 0–1 | Valli | new tournament description | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Feb 27, 2026 | Kahre | 0–1 | Lehtinen | new tournament description | Sicilian Defense: Modern Variations | |
| Oct 14, 2025 | Sevcikova | 0–1 | Lehtinen | Round 9: Sevcikova, Lucia - Lehtinen, Helja | Nimzo-Indian Defense: Three Knights Variation | |
| Oct 13, 2025 | Wickstrom | 1–0 | Lehtinen | Round 8: Wickstrom, Carina - Lehtinen, Helja | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Oct 12, 2025 | Lehtinen | 0–1 | Ince | Round 7: Lehtinen, Helja - Ince, Safiye Oyku | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Oct 10, 2025 | Avelino | ½–½ | Lehtinen | Round 6: Avelino, Camila Biscaya - Lehtinen, Helja | Sicilian Defense: Sozin Attack, Flank Variation | |
| Oct 9, 2025 | Vanhuyse | 1–0 | Lehtinen | Round 5: Vanhuyse, Nele - Lehtinen, Helja | Sicilian Defense: Modern Variations | |
| Oct 8, 2025 | Briem | 0–1 | Lehtinen | Round 4: Briem, Gudrun Fanney - Lehtinen, Helja | Catalan Opening | |
| Oct 7, 2025 | Lehtinen | 1–0 | Radikovic | Round 3: Lehtinen, Helja - Radikovic, Anamarija | Queen's Gambit Accepted: Old Variation | |
| Oct 5, 2025 | Lehtinen | 0–1 | Sgircea | Round 1: Lehtinen, Helja - Sgircea, Silvia-Raluca | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 26, 2025 | Lehtinen | 1–0 | Rinne | Round 9: Lehtinen, Helja - Rinne, Heini | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 25, 2025 | Tuominen | ½–½ | Lehtinen | Round 8: Tuominen, Tanja - Lehtinen, Helja | Sicilian Defense: Alapin Variation | |
| Apr 24, 2025 | Lehtinen | 0–1 | Pelander | Round 7: Lehtinen, Helja - Pelander, Pauliina | Slav Defense: Exchange Variation, Boor Attack | |
| Apr 23, 2025 | Keinanen | 1–0 | Lehtinen | Round 6: Keinanen, Anastasia - Lehtinen, Helja | Sicilian Defense: Najdorf Variation | |
| Apr 22, 2025 | Lehtinen | 1–0 | Belaya | Round 5: Lehtinen, Helja - Belaya, Nastasya | King's Indian Defense: Makogonov Variation | |
| Apr 21, 2025 | Bhaumik | 0–1 | Lehtinen | Round 4: Bhaumik, Mehr - Lehtinen, Helja | Rapport-Jobava System | |
| Apr 20, 2025 | Makinen | 0–1 | Lehtinen | Round 3: Makinen, Kesia - Lehtinen, Helja | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 19, 2025 | Lehtinen | 0–1 | Methmali | Round 2: Lehtinen, Helja - Methmali, Y. | Modern Defense: Averbakh System | |
| Apr 18, 2025 | Bederdin | 1–0 | Lehtinen | Round 1: Bederdin, Lilja - Lehtinen, Helja | Bogo-Indian Defense: Grünfeld Variation | |
| — | Lehtinen | 0–1 | Nazarova | Icelandic Women Open Championship 2022 | Semi-Slav Defense: Chigorin Defense | |
| — | Lehtinen | 1–0 | Johannsdottir | Icelandic Women Open Championship 2022 | Zukertort Opening: Kingside Fianchetto | |
| — | Lehtinen | 0–1 | Ptacnikova | Icelandic Women Open Championship 2022 | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| — | Helgadottir | 1–0 | Lehtinen | Icelandic Women Open Championship 2022 | Nimzo-Indian Defense: Three Knights Variation | |
| — | Jonsdottir | 0–1 | Lehtinen | Icelandic Women Open Championship 2022 | Sicilian Defense: Kan Variation, Knight Variation | |
| — | Dolzhikova | 1–0 | Lehtinen | Icelandic Women Open Championship 2022 | Nimzo-Larsen Attack: Modern Variation | |
