| Jun 21, 2026 | Dehtiarov | 1–0 | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Caro-Kann Defense: Advance Variation, Short Variation | |
| Jun 20, 2026 | Kowalski | ½–½ | Cyborowski | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Jun 19, 2026 | Finek | 1–0 | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Slav Defense | |
| Jun 18, 2026 | Kowalski | 0–1 | Gumularz | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Semi-Slav Defense | |
| Jun 17, 2026 | Leniart | ½–½ | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Slav Defense: Czech Variation, Classical System, Main Line | |
| Jun 16, 2026 | Samunenkov | 1–0 | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Ruy Lopez: Closed, Delayed Exchange | |
| Feb 13, 2026 | Kowalski | ½–½ | Reza | blitz2026 | Indian Defense: Knights Variation | |
| Feb 13, 2026 | Raczek | 1–0 | Kowalski | blitz2026 | Réti Opening: Anglo-Slav Variation, with g3 | |
| Feb 13, 2026 | Kowalski | 0–1 | Janik | blitz2026 | Torre Attack: Classical Defense | |
| Feb 13, 2026 | Wagner | 0–1 | Kowalski | blitz2026 | King's Indian Defense | |
| Feb 13, 2026 | Sliwicka | 0–1 | Kowalski | blitz2026 | Pirc Defense: Austrian Attack, Dragon Formation | |
| Feb 13, 2026 | Ugorek | ½–½ | Kowalski | blitz2026 | Réti Opening: Anglo-Slav Variation, with g3 | |
| Feb 13, 2026 | Kowalski | 1–0 | Galazka | blitz2026 | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Oct 4, 2025 | Kowalski | 1–0 | Pakleza | MP-rapid25 | Wade Defense | |
| Oct 4, 2025 | Madajczak | 0–1 | Kowalski | MP-rapid25 | Réti Opening: Advance Variation | |
| Oct 4, 2025 | Kowalski | ½–½ | Rog | MP-rapid25 | English Defense | |
| Oct 4, 2025 | Demski | 0–1 | Kowalski | MP-rapid25 | Modern Defense: Standard Defense | |
| Oct 4, 2025 | Kowalski | 1–0 | Strzalkowski | MP-rapid25 | Queen's Gambit Declined: Austrian Defense | |
| Oct 4, 2025 | Kulczycki | 0–1 | Kowalski | MP-rapid25 | Modern Defense: Geller's System | |
| Oct 4, 2025 | Kowalski | 0–1 | Mondrzycki | MP-rapid25 | Queen's Gambit Declined: Three Knights Variation | |
| Oct 4, 2025 | Shilov | 0–1 | Kowalski | MP-rapid25 | Benoni Defense: Benoni-Indian Defense, Kingside Move Order | |
| Oct 4, 2025 | Kowalski | 1–0 | Rapiej | MP-rapid25 | King's Indian Attack: Symmetrical Defense | |
| Aug 12, 2025 | Avinash | 0–1 | Kowalski | Uppsala Chess Festival IM | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jul 11, 2025 | Kowalski | * | Chen | Round 7: Kowalski, Igor - Chen, Max | ? | |
| Jul 10, 2025 | Castellano Lopez | ½–½ | Kowalski | Round 6: Castellano Lopez, Javier - Kowalski, Igor | Benko Gambit Accepted: Modern Variation | |
| Jul 9, 2025 | Kowalski | * | Juan Lepp | Round 5: Kowalski, Igor - Juan Lepp, Jaime Boris | ? | |
| Jul 8, 2025 | Ribera Veganzones | * | Kowalski | Round 4: Ribera Veganzones, Josep Maria - Kowalski, Igor | ? | |
| Jul 7, 2025 | Kowalski | * | Krivenko | Round 3: Kowalski, Igor - Krivenko, Dion | ? | |
| Jul 6, 2025 | Serikbay | * | Kowalski | Round 2: Serikbay, Assel - Kowalski, Igor | ? | |
| Jul 5, 2025 | Kowalski | * | Bendayan Claros | Round 1: Kowalski, Igor - Bendayan Claros, Aaron | ? | |
| Jun 10, 2025 | Tomczak | ½–½ | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Scotch Game: Mieses Variation | |
| Jun 9, 2025 | Kowalski | 1–0 | Krasenkow | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Modern Defense: Standard Line | |
| Jun 8, 2025 | Onyshchuk | ½–½ | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | King's Indian Attack: Pachman System | |
| Jun 7, 2025 | Kowalski | ½–½ | Antoniewski | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Semi-Slav Defense: Quiet Variation | |
| Jun 6, 2025 | Gumularz | 1–0 | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Nimzo-Indian Defense: Three Knights Variation | |
| Jun 5, 2025 | Kowalski | ½–½ | Cieslak | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Queen's Gambit Declined: Ragozin Defense | |
| Jun 4, 2025 | Kozak | ½–½ | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Zukertort Opening: Nimzo-Larsen Variation | |
| Jun 3, 2025 | Kazakouski | 1–0 | Kowalski | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jun 2, 2025 | Bartel | 1–0 | Kowalski | Open-1 | Ruy Lopez: Morphy Defense, Tarrasch Variation | |
| Jun 2, 2025 | Grochol | 0–1 | Kowalski | Open-1 | Indian Defense | |
| Jun 2, 2025 | Kowalski | 0–1 | Socko | Druzynowe Mistrzostwa Polski - Ekstraliga 2025 | Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation | |
| May 31, 2025 | Marekwica | 0–1 | Kowalski | Open-1 | Modern Defense: Standard Defense | |
| May 31, 2025 | Kowalski | 0–1 | Golenia | Open-1 | Semi-Slav Defense: Marshall Gambit, Main Line | |
| May 31, 2025 | Rudzinska | 1–0 | Kowalski | Open-1 | Caro-Kann Defense: Advance Variation, Bronstein Variation | |
| May 31, 2025 | Kowalski | 0–1 | Kosakowski | Open-1 | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| May 31, 2025 | Padalka | 0–1 | Kowalski | Open-1 | Slav Defense: Exchange Variation | |
| May 31, 2025 | Kowalski | 1–0 | Kubik | Open-1 | Grünfeld Defense: Exchange Variation, Sokolsky Variation | |
| May 31, 2025 | Kowalski | 1–0 | Kokoszczynski | Open-1 | King's Indian Defense: Semi-Averbakh System | |
| May 31, 2025 | Kowalski | 1–0 | Namyslak | Open-1 | Pseudo Queen's Indian Defense | |
| May 31, 2025 | Lewczuk | 0–1 | Kowalski | Open-1 | Nimzo-Larsen Attack: Classical Variation | |
| Apr 21, 2025 | Kowalski | ½–½ | Malek | Grenke Chess Open A | Queen's Indian Defense: Classical Variation | |
| Apr 21, 2025 | Weihrauch | ½–½ | Kowalski | Round 8: Weihrauch, Jakob - Kowalski, Igor | Ruy Lopez: Closed, Anti-Marshall | |
| Apr 20, 2025 | Kowalski | 0–1 | Jacobson | Round 7: Kowalski, Igor - Jacobson, Brandon | King's Indian Defense: Semi-Averbakh System | |
| Apr 20, 2025 | Sabuk | 0–1 | Kowalski | Round 6: Sabuk, Piotr - Kowalski, Igor | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Apr 19, 2025 | Kowalski | 1–0 | Wong | Round 5: Kowalski, Igor - Wong, Gengchun | Slav Defense: Modern Line | |
| Apr 19, 2025 | Biastoch | ½–½ | Kowalski | Round 4: Biastoch, Bennet - Kowalski, Igor | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Apr 18, 2025 | Kowalski | ½–½ | Nied | Round 3: Kowalski, Igor - Nied, Pascal | Catalan Opening: Open Defense, Classical Line | |
| Apr 18, 2025 | Yasmo | 0–1 | Kowalski | Round 2: Yasmo, Daniil - Kowalski, Igor | Four Knights Game: Spanish Variation | |
| Sep 22, 2024 | Kowalski | ½–½ | Raczek | 1liga1 | Tarrasch Defense: Dubov Tarrasch | |
| Sep 21, 2024 | Pacan-Milej | ½–½ | Kowalski | 1liga1 | Slav Defense: Czech Variation, Classical System, Main Line | |
| Sep 20, 2024 | Kowalski | ½–½ | Niedbala | 1liga1 | Grünfeld Defense: Exchange Variation, Modern Exchange Variation | |
| Sep 19, 2024 | Gnojek | ½–½ | Kowalski | 1liga1 | King's Indian Defense: Sämisch Variation, Sämisch Gambit | |
| Sep 18, 2024 | Kowalski | ½–½ | Kucza | 1liga1 | Queen's Indian Defense: Fianchetto Variation, Kramnik Variation | |
| Sep 17, 2024 | Niekras | ½–½ | Kowalski | 1liga1 | Scotch Game | |
| Sep 16, 2024 | Kowalski | ½–½ | Nurkiewicz | 1liga1 | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Sep 15, 2024 | Kowalski | 1–0 | Golubka | 1liga1 | Benoni Defense: Classical Variation, Czerniak Defense | |
| Sep 14, 2024 | Galperin | ½–½ | Kowalski | 1liga1 | Scotch Game | |
| Aug 14, 2024 | Koziorowicz | 0–1 | Kowalski | anderssenA2024 | Italian Game: Scotch Gambit, Max Lange Attack | |
| Aug 13, 2024 | Kowalski | ½–½ | Mis | anderssenA2024 | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Aug 12, 2024 | Chojnacki | ½–½ | Kowalski | anderssenA2024 | Bogo-Indian Defense: Wade-Smyslov Variation | |
| Aug 11, 2024 | Kowalski | ½–½ | Rozentalis | anderssenA2024 | Bogo-Indian Defense: Vitolins Variation | |
| Aug 10, 2024 | Kucza | 0–1 | Kowalski | anderssenA2024 | Ruy Lopez: Closed | |
| Aug 9, 2024 | Kowalski | ½–½ | Baziuk | anderssenA2024 | Grünfeld Defense: Exchange Variation, Spassky Variation | |
| Aug 9, 2024 | Oliinyk | 0–1 | Kowalski | anderssenA2024 | Ruy Lopez: Morphy Defense | |
| Aug 8, 2024 | Kowalski | 1–0 | Jankowiak | anderssenA2024 | Blumenfeld Countergambit | |
| Jul 19, 2023 | Deszczynski | 0–1 | Kowalski | Najdorf Memorial | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jul 18, 2023 | Kowalski | 1–0 | Mickiewicz | Najdorf Memorial | Sicilian Defense: Scheveningen Variation, Classical Variation | |
| Jul 17, 2023 | Zdybel | ½–½ | Kowalski | Najdorf Memorial | Caro-Kann Defense: Advance Variation | |
| Jul 16, 2023 | Kowalski | ½–½ | Kaczmarek | Najdorf Memorial | Sicilian Defense: Hyperaccelerated Dragon | |
| Jul 15, 2023 | Karwowski | 0–1 | Kowalski | Najdorf Memorial | ? | |
| Jul 14, 2023 | Kowalski | ½–½ | Padalka | Najdorf Memorial | Sicilian Defense: Moscow Variation, Main Line | |
| Jul 14, 2023 | Gorkiewicz | 0–1 | Kowalski | Najdorf Memorial | French Defense: Winawer Variation, Advance Variation | |
| Jul 12, 2023 | Kowalski | 1–0 | Dmochowska | Najdorf Memorial | Indian Defense: Anti-Nimzo-Indian | |
| Jul 11, 2023 | Janeczko | 1–0 | Kowalski | Najdorf Memorial | Caro-Kann Defense: Maróczy Variation | |
| Dec 16, 2022 | Kowalski | 1–0 | Shystarova | ebrcc2022 | French Defense: Rubinstein Variation, Blackburne Defense | |
| Dec 16, 2022 | Kowalski | 1–0 | Goraj | ebrcc2022 | Queen's Pawn Game: Barry Attack | |
| Dec 16, 2022 | Kowalski | 1–0 | Pavlidou | Katowice | Torre Attack: Classical Defense, Nimzowitsch Variation | |
| Dec 16, 2022 | Kowalski | 1–0 | Klekowski | European Blitz Chess Championship 2022 | Indian Defense: Knights Variation | |
| Dec 16, 2022 | Kowalski | 0–1 | Hovhannisyan | European Blitz Chess Championship 2022 | Semi-Slav Defense: Normal Variation | |
| Dec 16, 2022 | Kowalski | 1–0 | Hjartarson | European Blitz Chess Championship 2022 | Modern Defense: Standard Defense | |
| Dec 16, 2022 | Kowalski | 0–1 | Navara | European Blitz Chess Championship 2022 | Indian Defense: Knights Variation | |
| Dec 16, 2022 | Kowalski | 0–1 | Vogel | European Blitz Chess Championship 2022 | Ruy Lopez: Closed | |
| Dec 16, 2022 | Kowalski | 1–0 | Varvadoukas | Katowice | Queen's Pawn Game: Barry Attack, Grünfeld Variation | |
| Dec 16, 2022 | Kowalski | 1–0 | Blohberger | European Blitz Chess Championship 2022 | Queen's Pawn Game: Barry Attack, Grünfeld Variation | |
| Dec 16, 2022 | Kowalski | 0–1 | Tazbir | European Blitz Chess Championship 2022 | Queen's Gambit Accepted: Old Variation | |
| Dec 16, 2022 | Shystarova | 0–1 | Kowalski | ebrcc2022 | Caro-Kann Defense: Classical Variation | |
| Dec 16, 2022 | Goraj | 0–1 | Kowalski | ebrcc2022 | Réti Opening: Advance Variation, Michel Gambit | |
| Dec 16, 2022 | Pavlidou | 0–1 | Kowalski | Katowice | King's Indian Defense: Normal Variation | |
| Dec 16, 2022 | Klekowski | 0–1 | Kowalski | European Blitz Chess Championship 2022 | Réti Opening: Anglo-Slav Variation, New York System | |
| Dec 16, 2022 | Hovhannisyan | ½–½ | Kowalski | European Blitz Chess Championship 2022 | Caro-Kann Defense: Panov Attack, Modern Defense, Mieses Line | |