| Jan 3, 2026 | Kowalczyk | * | Beber | Round 9: Kowalczyk, Rafal - Beber, Anja | ? | |
| Jan 2, 2026 | Campanile | * | Kowalczyk | Round 8: Campanile, Antonio - Kowalczyk, Rafal | ? | |
| Jan 1, 2026 | Kowalczyk | * | Piddubna | Round 7: Kowalczyk, Rafal - Piddubna, Bozhena | ? | |
| Dec 31, 2025 | Galvan Cipriani | * | Kowalczyk | Round 6: Galvan Cipriani, Viviana - Kowalczyk, Rafal | ? | |
| Dec 30, 2025 | Kowalczyk | * | Herega | Round 5: Kowalczyk, Rafal - Herega, Nejc | ? | |
| Dec 29, 2025 | Maglioni | * | Kowalczyk | Round 4: Maglioni, Leonardo - Kowalczyk, Rafal | ? | |
| Dec 29, 2025 | Kowalczyk | * | Panelo | Round 3: Kowalczyk, Rafal - Panelo, Marcelo | ? | |
| Dec 28, 2025 | Kowalczyk | ½–½ | Martinovici | Round 1: Kowalczyk, Rafal - Martinovici, Ilia | French Defense: Schlechter Variation | |
| Dec 28, 2025 | Bettalli | * | Kowalczyk | Round 2: Bettalli, Francesco - Kowalczyk, Rafal | ? | |
| Jul 31, 2025 | Kowalczyk | 1–0 | Ask | Jonkoping Chess Festival 2025 - Standard Open | Duras Gambit | |
| Jul 30, 2025 | Kowalczyk | 1–0 | Rasti | Jonkoping Chess Festival 2025 - Standard Open | Sicilian Defense: Moscow Variation | |
| Jul 29, 2025 | Ernst | ½–½ | Kowalczyk | Jonkoping Chess Festival 2025 - Standard Open | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jul 28, 2025 | Bergdahl | 0–1 | Kowalczyk | Jonkoping Chess Festival 2025 - Standard Open | Ruy Lopez: Closed, Karpov Variation | |
| Jul 28, 2025 | Kowalczyk | 0–1 | Blomqvist | Jonkoping Chess Festival 2025 - Standard Open | French Defense: Schlechter Variation | |
| Jul 27, 2025 | Abdulla Ateeq Alremaeithi | 0–1 | Kowalczyk | Jonkoping Chess Festival 2025 - Standard Open | English Opening: Agincourt Defense | |
| Jul 26, 2025 | Kowalczyk | 1–0 | Jeyanth R | Jonkoping Chess Festival 2025 - Standard Open | Sicilian Defense: Moscow Variation | |
| Jul 25, 2025 | Eknor | 0–1 | Kowalczyk | Jonkoping Chess Festival 2025 - Standard Open | Ruy Lopez: Exchange Variation, Bronstein Variation | |
| Jul 16, 2025 | Kowalczyk | 0–1 | Srvatka | Piestany A | French Defense: King's Indian Attack | |
| Jul 15, 2025 | Chiszko | 1–0 | Kowalczyk | Piestany A | Queen's Gambit Declined | |
| Jul 14, 2025 | Kowalczyk | 0–1 | Flak | Piestany A | Alekhine Defense: Modern Variation, Alburt Variation | |
| Jul 13, 2025 | Meszaros | 0–1 | Kowalczyk | Piestany A | Scotch Game: Tartakower Variation | |
| Jul 12, 2025 | Kowalczyk | ½–½ | Janik | Piestany A | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 11, 2025 | Paprocki | 1–0 | Kowalczyk | Piestany A | Indian Defense: London System | |
| Jul 10, 2025 | Kowalczyk | ½–½ | Rupesh Reddy Y | Piestany A | Sicilian Defense: Keres Variation | |
| Jul 9, 2025 | Bednarek | ½–½ | Kowalczyk | Piestany A | Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid | |
| Jul 8, 2025 | Kowalczyk | ½–½ | Stary | Piestany A | Sicilian Defense: Alapin Variation | |
| Aug 25, 2024 | Kowalczyk | 1–0 | Anshuman | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Sicilian Defense: Alapin Variation | |
| Aug 24, 2024 | Iwanczuk | ½–½ | Kowalczyk | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Aug 23, 2024 | Kowalczyk | 0–1 | Eggink | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Aug 22, 2024 | Mulawa | 1–0 | Kowalczyk | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Aug 21, 2024 | Kowalczyk | 1–0 | Li | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Sicilian Defense: Moscow Variation | |
| Aug 20, 2024 | Czernek | 0–1 | Kowalczyk | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid | |
| Aug 19, 2024 | Kowalczyk | 1–0 | Wieckowski | rubinstein24-a1 | Caro-Kann Defense: Goldman Variation | |
| Aug 18, 2024 | Malinowski | ½–½ | Kowalczyk | rubinstein24-a1 | Indian Defense: London System | |
| Aug 17, 2024 | Kowalczyk | 1–0 | Chmielek | rubinstein24-a1 | Scotch Game: Mieses Variation | |
| Aug 14, 2024 | Kowalczyk | 1–0 | Zareba | anderssenA2024 | Pirc Defense | |
| Aug 13, 2024 | Czarniecka | 0–1 | Kowalczyk | anderssenA2024 | Center Game | |
| Aug 12, 2024 | Kowalczyk | ½–½ | Rozanski | anderssenA2024 | Caro-Kann Defense: Tartakower Variation | |
| Aug 12, 2024 | Mohylnyi | ½–½ | Kowalczyk | anderssenA2024 | Scotch Game: Mieses Variation | |
| Aug 11, 2024 | Kowalczyk | 1–0 | Lechowski | anderssenA2024 | Sicilian Defense: Moscow Variation | |
| Aug 10, 2024 | Aditya Kunal Patil | 1–0 | Kowalczyk | anderssenA2024 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Aug 9, 2024 | Kowalczyk | 1–0 | Gierulski | anderssenA2024 | Sicilian Defense: Alapin Variation | |
| Aug 9, 2024 | Kowalczyk | 0–1 | Kucza | anderssenA2024 | Scotch Game: Mieses Variation | |
| Aug 8, 2024 | Zabron | 0–1 | Kowalczyk | anderssenA2024 | Queen's Gambit Accepted: Classical Defense, Rubinstein Variation | |
| Jul 17, 2024 | Kowalczyk | 0–1 | Kondys | Najdorf Memorial | French Defense: Schlechter Variation | |
| Jul 16, 2024 | Dzida | 1–0 | Kowalczyk | Najdorf Memorial | Ruy Lopez: Closed, Martinez Variation | |
| Jul 15, 2024 | Kowalczyk | 1–0 | Suska | Najdorf Memorial | Pirc Defense | |
| Jul 14, 2024 | Zalega | ½–½ | Kowalczyk | Najdorf Memorial | Italian Game: Scotch Gambit, Max Lange Attack | |
| Jul 13, 2024 | Kowalczyk | 0–1 | Jarmula | Najdorf Memorial | Scandinavian Defense: Gubinsky-Melts Defense | |
| Jul 12, 2024 | Kowalczyk | 1–0 | Fritz | Najdorf Memorial | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 11, 2024 | Sengupta | 1–0 | Kowalczyk | Najdorf Memorial | Italian Game: Classical Variation, Greco Gambit | |
| Jul 10, 2024 | Kowalczyk | 1–0 | Orzechowski | Najdorf Memorial | Nimzowitsch Defense: Scandinavian Variation, Advance Variation | |
| Jul 9, 2024 | Siennicki | 0–1 | Kowalczyk | Najdorf Memorial | Catalan Opening: Open Defense, Classical Line | |
| Jul 19, 2023 | Cherniaiev | 0–1 | Kowalczyk | Najdorf Memorial | Queen's Gambit Accepted: Classical Defense, Rubinstein Variation | |
| Jul 18, 2023 | Kowalczyk | 1–0 | Biesiadecki | Najdorf Memorial | Sicilian Defense: Kalashnikov Variation | |
| Jul 17, 2023 | Kowalczyk | 0–1 | Tsiapko | Najdorf Memorial | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 16, 2023 | Markuszewski | 0–1 | Kowalczyk | Najdorf Memorial | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Jul 15, 2023 | Jakubowski | 1–0 | Kowalczyk | Najdorf Memorial | King's Indian Attack | |
| Jul 14, 2023 | Kowalczyk | ½–½ | Gagare | Najdorf Memorial | Sicilian Defense: Delayed Alapin Variation | |
| Jul 14, 2023 | Kowalczyk | 0–1 | Sieciechowicz | Najdorf Memorial | Sicilian Defense: Moscow Variation | |
| Jul 12, 2023 | Jarmula | 0–1 | Kowalczyk | Najdorf Memorial | Rapport-Jobava System | |
| Jul 11, 2023 | Kowalczyk | 1–0 | Majocha | Najdorf Memorial | French Defense: Advance Variation, Euwe Variation | |
| Jul 2, 2023 | Kowalczyk | 0–1 | Golis | Festival Bydgoszcz ELO > 2000 | Queen's Pawn Game: London System, with e6 | |
| Jul 1, 2023 | Kowalczyk | 1–0 | Majek | Festival Bydgoszcz ELO > 2000 | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Jul 1, 2023 | Karut | ½–½ | Kowalczyk | Festival Bydgoszcz ELO > 2000 | Ruy Lopez: Schliemann Defense | |
| Jun 29, 2023 | Fishchuk | 1–0 | Kowalczyk | Festival Bydgoszcz ELO > 2000 | Four Knights Game: Scotch Variation Accepted | |
| Jun 28, 2023 | Kowalczyk | 1–0 | Sliwerski | Festival Bydgoszcz ELO > 2000 | Sicilian Defense: Moscow Variation | |
| Jun 27, 2023 | Smietanska | 1–0 | Kowalczyk | Festival Bydgoszcz ELO > 2000 | Ruy Lopez: Closed, Anti-Marshall | |
| Jun 26, 2023 | Kowalczyk | 0–1 | Kucza | Festival Bydgoszcz ELO > 2000 | Ruy Lopez: Closed, Bogoljubow Variation | |
| Jun 25, 2023 | Starosciak | 0–1 | Kowalczyk | Festival Bydgoszcz ELO > 2000 | King's Indian Defense: Sämisch Variation, Closed Variation | |
| Jun 24, 2023 | Kowalczyk | 0–1 | Czarnota | Festival Bydgoszcz ELO > 2000 | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Aug 21, 2022 | Lambrecht | ½–½ | Kowalczyk | 58th Rubinstein Memorial | A | Catalan Opening: Closed | |
| Aug 20, 2022 | Razin | 1–0 | Kowalczyk | 58th Rubinstein Memorial | A | King's Indian Defense: Orthodox Variation | |
| Aug 19, 2022 | Kowalczyk | ½–½ | Cyborowski | 58th Rubinstein Memorial | A | Sicilian Defense: French Variation | |
| Aug 18, 2022 | Kowalczyk | 1–0 | Antoniewicz | 58th Rubinstein Memorial | A | Scandinavian Defense: Schiller-Pytel Variation | |
| Aug 17, 2022 | Koziorowicz | 1–0 | Kowalczyk | 58th Rubinstein Memorial | A | Nimzo-Indian Defense: Normal Variation | |
| Aug 16, 2022 | Kowalczyk | 1–0 | Kasprzak | 58th Rubinstein Memorial | A | Sicilian Defense: Alapin Variation | |
| Aug 15, 2022 | Majocha | 0–1 | Kowalczyk | 58th Rubinstein Memorial | A | Indian Defense: Anti-Nimzo-Indian | |
| Aug 14, 2022 | Kowalczyk | 1–0 | Kejna | 58th Rubinstein Memorial | A | Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations | |
| Aug 13, 2022 | Czechowski | 1–0 | Kowalczyk | 58th Rubinstein Memorial | A | Nimzo-Indian Defense: Rubinstein System | |
| Aug 10, 2022 | Wojdak | ½–½ | Kowalczyk | Open A | Ruy Lopez: Morphy Defense, Tarrasch Variation | |
| Aug 9, 2022 | Kowalczyk | 1–0 | Kaczmarek | Open A | Sicilian Defense: Alapin Variation | |
| Aug 9, 2022 | Janeczko | ½–½ | Kowalczyk | Open A | Four Knights Game: Scotch Variation Accepted | |
| Aug 7, 2022 | Kowalczyk | 0–1 | Zaninotto | Open A | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Aug 6, 2022 | Rakshitta Ravi | 1–0 | Kowalczyk | Open A | King's Indian Attack | |
| Aug 5, 2022 | Kowalczyk | 0–1 | Kukula | Open A | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Aug 5, 2022 | Backiel | 0–1 | Kowalczyk | Open A | Nimzo-Larsen Attack: Classical Variation | |
| Aug 4, 2022 | Kowalczyk | ½–½ | Soham Datar | Open A | Sicilian Defense: Najdorf Variation, Goteborg Variation | |
| Aug 3, 2022 | Markowski | 1–0 | Kowalczyk | Open A | Indian Defense: Anti-Nimzo-Indian | |
| Dec 19, 2021 | Krawczyk | 0–1 | Kowalczyk | ME rapid 2021 | Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | |
| Dec 18, 2021 | Mirzoev | 1–0 | Kowalczyk | ERCC | English Opening: Neo-Catalan | |
| Dec 18, 2021 | Diermair | 1–0 | Kowalczyk | ERCC | Nimzo-Indian Defense | |
| Dec 17, 2021 | Kowalczyk | 0–1 | Pultinevicius | EBCC | Caro-Kann Defense: Tartakower Variation | |
| Dec 17, 2021 | Kowalczyk | 1–0 | Zalega | European Blitz Chess Championship 2021 | Mieses Opening | |
| Dec 17, 2021 | Kowalczyk | 0–1 | Pakleza | EBCC | Czech Defense | |
| Dec 17, 2021 | Kowalczyk | 1–0 | Cukrowski | ME Katowice 2021 | Caro-Kann Defense: Tartakower Variation | |
| Dec 17, 2021 | Kowalczyk | 0–1 | Gretarsson | EBCC | Modern Defense: Standard Defense | |
| Dec 17, 2021 | Kowalczyk | 0–1 | Szmyd | ME Katowice 2021 | Caro-Kann Defense: Classical Variation, Flohr Variation | |
| Dec 17, 2021 | Kowalczyk | 1–0 | Sokolowski | ME Katowice 2021 | Alekhine Defense: Exchange Variation | |
| Dec 17, 2021 | Kowalczyk | 1–0 | Kjartansson | EBCC | Caro-Kann Defense: Classical Variation, Flohr Variation | |