| Jun 12, 2026 | Leszner | 1–0 | Khymko | Round 9: Leszner, Liliana - Khymko, Yana | King's Indian Defense: Fianchetto Variation, Classical Variation | |
| Jun 9, 2026 | Vederko | 1–0 | Leszner | Round 9: Vederko, Liudmyla - Leszner, Liliana | Zukertort Opening: Kingside Fianchetto | |
| Jun 9, 2026 | Leszner | * | Solomna | Round 8: Leszner, Liliana - Solomna, Svitlana | French Defense: King's Indian Attack | |
| Jun 9, 2026 | Kambarova | 0–1 | Leszner | Round 7: Kambarova, Aiganym - Leszner, Liliana | English Defense | |
| Jun 8, 2026 | Leszner | 0–1 | Amangeldy | Round 4: Leszner, Liliana - Amangeldy, Asel | Nimzo-Larsen Attack: Indian Variation | |
| Jun 7, 2026 | Leszner | 1–0 | Aleksandrova | Round 6: Leszner, Liliana - Aleksandrova, Aleksandra | English Opening: Agincourt Defense, Kurajica Defense | |
| Jun 5, 2026 | Baidila | 0–1 | Leszner | Round 2: Baidila, Aruzhan - Leszner, Liliana | Zukertort Opening: Kingside Fianchetto | |
| Jun 5, 2026 | Leszner | ½–½ | Kambarova | Round 4: Leszner, Liliana - Kambarova, Aiganym | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Jun 4, 2026 | Tran Thi Bich Thuy | ½–½ | Leszner | Round 3: Tran Thi Bich Thuy - Leszner, Liliana | Indian Defense: Wade-Tartakower Defense | |
| Jun 1, 2026 | Leszner | ½–½ | Tran Thi Bich Thuy | Round 2: Leszner, Liliana - Tran Thi Bich Thuy | Sicilian Defense: Closed | |
| Jun 1, 2026 | Leszner | ½–½ | Doan Thu Huyen | Round 5: Leszner, Liliana - Doan Thu Huyen | English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | |
| Jun 1, 2026 | Frumin | 0–1 | Leszner | Round 1: Frumin, Rebeka - Leszner, Liliana | Owen Defense | |
| Jun 1, 2026 | Leszner | ½–½ | Doan Thu Huyen | Round 2: Leszner, Liliana - Doan Thu Huyen | English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | |
| Jun 1, 2026 | Vederko | 0–1 | Leszner | Round 1: Vederko, Liudmyla - Leszner, Liliana | Modern Defense: Standard Line | |
| Jun 1, 2026 | Baidila | 0–1 | Leszner | Round 7: Baidila, Aruzhan - Leszner, Liliana | Queen's Pawn Game: Zukertort Variation | |
| Jun 1, 2026 | Gerasimova | ½–½ | Leszner | Round 8: Gerasimova, Svetlana - Leszner, Liliana | Modern Defense: Pseudo-Austrian Attack | |
| Oct 25, 2025 | Leszner | 0–1 | Salamon | Round 6: Leszner, Liliana - Salamon, Julia | Queen's Gambit Declined: Three Knights Variation | |
| Oct 24, 2025 | Zakharova | 0–1 | Leszner | Round 5: Zakharova, Evgeniya - Leszner, Liliana | Modern Defense: Mongredien Defense, with Nf3 | |
| Oct 23, 2025 | Leszner | ½–½ | Aleksandrova | Round 4: Leszner, Liliana - Aleksandrova, Aleksandra | English Opening: King's English Variation, Reversed Sicilian | |
| Oct 22, 2025 | Batista Rivera | 0–1 | Leszner | Round 3: Batista Rivera, Idalis - Leszner, Liliana | Owen Defense | |
| Oct 21, 2025 | Leszner | 1–0 | Farkas | Round 2: Leszner, Liliana - Farkas, Virag | French Defense: King's Indian Attack | |
| Oct 20, 2025 | Leszner | 1–0 | Nauryzgaliev | Round 1: Leszner, Liliana - Nauryzgaliev, Amangeldy | English Opening: Symmetrical Variation, Three Knights Variation | |
| Oct 17, 2025 | Novak | ½–½ | Leszner | Round 9: Novak, Jiri - Leszner, Liliana | Owen Defense | |
| Oct 16, 2025 | Leszner | ½–½ | Nyvlt | Round 8: Leszner, Liliana - Nyvlt, Otto | Sicilian Defense: Moscow Variation, Main Line | |
| Oct 15, 2025 | Anikeev | 0–1 | Leszner | Round 7: Anikeev, Vyacheslav - Leszner, Liliana | Indian Defense | |
| Oct 15, 2025 | Leszner | 0–1 | Diak | Round 6: Leszner, Liliana - Diak, Hryhorii | Scandinavian Defense: Main Line, Mieses Variation | |
| Oct 14, 2025 | Reznicek | ½–½ | Leszner | Round 5: Reznicek, Marcel - Leszner, Liliana | Zukertort Opening: Kingside Fianchetto | |
| Oct 14, 2025 | Andriienko | 1–0 | Leszner | Round 4: Andriienko, Artom - Leszner, Liliana | Modern Defense: Standard Line | |
| Oct 13, 2025 | Peroutka | 0–1 | Leszner | Round 9: Peroutka, Ivo - Leszner, Liliana | Queen's Gambit Declined: Albin Countergambit, Normal Line | |
| Oct 13, 2025 | Leszner | 0–1 | Travnicek | Round 8: Leszner, Liliana - Travnicek, Jaroslav | King's Indian Attack | |
| Oct 13, 2025 | Leszner | 1–0 | Seifert | Round 7: Leszner, Liliana - Seifert, Henryk | French Defense: Classical Variation, Delayed Exchange Variation | |
| Oct 13, 2025 | Babula | 1–0 | Leszner | Round 6: Babula, Milan - Leszner, Liliana | Modern Defense | |
| Oct 13, 2025 | Leszner | 1–0 | Travnicek | Round 3: Leszner, Liliana - Travnicek, Jaroslav | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Oct 12, 2025 | Zak | 0–1 | Leszner | Round 5: Zak, Roman - Leszner, Liliana | English Opening: Symmetrical Variation | |
| Oct 12, 2025 | Leszner | 0–1 | Mukha | Round 4: Leszner, Liliana - Mukha, Mykola | Sicilian Defense: Closed | |
| Oct 12, 2025 | Huszar | 0–1 | Leszner | Round 3: Huszar, Katalin - Leszner, Liliana | Modern Defense | |
| Oct 12, 2025 | Leszner | 0–1 | Diak | Round 2: Leszner, Liliana - Diak, Hryhorii | English Opening: Symmetrical Variation, Botvinnik System | |
| Oct 12, 2025 | Rejzek | 0–1 | Leszner | Round 1: Rejzek, Zdenek - Leszner, Liliana | Modern Defense: Two Knights Variation, Suttles Variation | |
| Oct 12, 2025 | Gurbanov | ½–½ | Leszner | Round 2: Gurbanov, Andrei - Leszner, Liliana | Old Indian Defense: Czech Variation, with Nc3 | |
| Oct 11, 2025 | Leszner | * | Huszar | Round 1: Leszner, Liliana - Huszar, Katalin | ? | |
| Oct 11, 2025 | Leszner | 1–0 | Huszar | Round 1: Leszner, Liliana - Huszar, Katalin | French Defense: King's Indian Attack | |
| Oct 5, 2025 | Leszner | 1–0 | Balcerczak | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | Italian Game | |
| Oct 4, 2025 | Leszner | 0–1 | Brokko | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | English Opening: The Whale | |
| Oct 3, 2025 | Sirletti | ½–½ | Leszner | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | English Defense | |
| Oct 1, 2025 | Leszner | 0–1 | Kordic | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | Sicilian Defense: Kan Variation, Modern Variation | |
| Sep 30, 2025 | Birkholz | ½–½ | Leszner | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | Modern Defense: Standard Defense | |
| Sep 29, 2025 | Leszner | ½–½ | Fink-Nunn | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | Sicilian Defense: Closed | |
| Sep 27, 2025 | Leszner | 1–0 | Novak | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | Caro-Kann Defense: Classical Variation | |
| Sep 24, 2025 | Heinatz | 1–0 | Leszner | European individual senior chess championship 2025 - Women 50+, 65+, Rabac, Croatia | Indian Defense | |
| Aug 11, 2024 | Simecek | 1–0 | Leszner | Olomouc 2024 - S50 | Queen's Pawn Game: Krause Variation | |
| Oct 26, 2023 | Smith | * | Leszner | World Senior Women's Championship | ? | |
| Oct 25, 2023 | Leszner | 0–1 | Klinova | World Senior Women's Championship | Pirc Defense | |
| Jun 18, 2023 | Leszner | 0–1 | Czerwonski | Mistrzostwa Polski Seniorow 2023 | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jun 17, 2023 | Brylowski | 0–1 | Leszner | Mistrzostwa Polski Seniorow 2023 | Old Indian Defense: Czech Variation, with Nf3 | |
| Jun 16, 2023 | Leszner | 1–0 | Osiecki | Mistrzostwa Polski Seniorow 2023 | French Defense: King's Indian Attack | |
| Jun 15, 2023 | Leszner | 1–0 | Shilov | Mistrzostwa Polski Seniorow 2023 | Vienna Gambit, with Max Lange Defense: Knight Variation | |
| Jun 15, 2023 | Betkowski | 1–0 | Leszner | Mistrzostwa Polski Seniorow 2023 | Modern Defense: Standard Defense | |
| Jun 14, 2023 | Stadnicki | 0–1 | Leszner | Mistrzostwa Polski Seniorow 2023 | Queen's Pawn Game: Zukertort Variation | |
| Jun 13, 2023 | Leszner | ½–½ | Lukasiewicz | Mistrzostwa Polski Seniorow 2023 | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jun 12, 2023 | Sosnowska | ½–½ | Leszner | Mistrzostwa Polski Seniorow 2023 | Rat Defense: Accelerated Gurgenidze | |
| Jul 13, 2022 | Leszner | 0–1 | Klimaszewski | ESCC 50+ Lublin 2022 | Sicilian Defense: Closed, Fianchetto Variation | |
| Jul 12, 2022 | Baliuniene | 0–1 | Leszner | ESCC 50+ Lublin 2022 | Slav Defense: Quiet Variation | |
| Jul 11, 2022 | Leszner | 1–0 | Puroila | ESCC 50+ Lublin 2022 | Four Knights Game: Italian Variation | |
| Jul 10, 2022 | Chlewinski | 0–1 | Leszner | ESCC 50+ Lublin 2022 | Modern Defense | |
| Jul 9, 2022 | Leszner | 0–1 | Pietinen | ESCC 50+ Lublin 2022 | French Defense: King's Indian Attack | |
| Jul 8, 2022 | Warnk | 0–1 | Leszner | ESCC 50+ Lublin 2022 | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Jul 7, 2022 | Leszner | 0–1 | Garabetyan | ESCC 50+ Lublin 2022 | Sicilian Defense: Kan Variation | |
| Jul 6, 2022 | Leszner | 0–1 | Lasinskas | ESCC 50+ Lublin 2022 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 5, 2022 | Lilja | 0–1 | Leszner | ESCC 50+ Lublin 2022 | Pirc Defense: Bayonet Attack | |
| — | Leszner | ½–½ | Heller | Olomouc 2024 - S50 | Nimzo-Larsen Attack | |