| Jul 24, 2025 | Gut | ½–½ | Kwiatkowski | Biel Chess Festival 2025 MTO | Nimzo-Indian Defense: Normal Variation | |
| Jul 23, 2025 | Kwiatkowski | ½–½ | Sushanth Kamabathula | Biel Chess Festival 2025 MTO | Sicilian Defense: Moscow Variation | |
| Jul 22, 2025 | Gut | 1–0 | Kwiatkowski | Biel Chess Festival 2025 MTO | Nimzo-Indian Defense: Normal Variation | |
| Jul 21, 2025 | Kwiatkowski | 1–0 | Vemparala | Biel Chess Festival 2025 MTO | Italian Game: Classical Variation, Greco Gambit | |
| Jul 19, 2025 | Chen | ½–½ | Kwiatkowski | Biel Chess Festival 2025 MTO | Bogo-Indian Defense: Grünfeld Variation | |
| Jul 18, 2025 | Kwiatkowski | 1–0 | Hoffmann | Biel Chess Festival 2025 MTO | Sicilian Defense: Kan Variation, Wing Attack | |
| Jul 17, 2025 | Tahay | 1–0 | Kwiatkowski | Biel Chess Festival 2025 MTO | Sicilian Defense: Najdorf Variation, Opocensky Variation, Modern Line | |
| Jul 16, 2025 | Kwiatkowski | ½–½ | Chen | Biel Chess Festival 2025 MTO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 15, 2025 | Hornung | 0–1 | Kwiatkowski | Biel Chess Festival 2025 MTO | Queen's Gambit Declined: Three Knights Variation | |
| Jul 14, 2025 | Kwiatkowski | 0–1 | Latorre | Biel Chess Festival 2025 MTO | Modern Defense: Standard Defense | |
| Apr 17, 2025 | Maksimovic | 0–1 | Kwiatkowski | Round 1: Maksimovic, Bojan - Kwiatkowski, Jakub | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Oct 13, 2024 | Trevisan | ½–½ | Kwiatkowski | 46th International Chess Open Citta di Arco - A | Sicilian Defense: Najdorf Variation | |
| Oct 12, 2024 | Kwiatkowski | 1–0 | Trumpp | 46th International Chess Open Citta di Arco - A | Catalan Opening: Closed | |
| Oct 11, 2024 | Steffens | 1–0 | Kwiatkowski | 46th International Chess Open Citta di Arco - A | Van Geet Opening | |
| Oct 10, 2024 | Borgo | ½–½ | Kwiatkowski | 46th International Chess Open Citta di Arco - A | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Oct 9, 2024 | Kwiatkowski | 1–0 | Cardarelli | 46th International Chess Open Citta di Arco - A | Sicilian Defense: O'Kelly Variation, Yerevan System | |
| Oct 8, 2024 | Zeller | 1–0 | Kwiatkowski | 46th International Chess Open Citta di Arco - A | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Oct 7, 2024 | Kwiatkowski | 1–0 | Wantoch von Rekowski | 46th International Chess Open Citta di Arco - A | Scandinavian Defense: Mieses-Kotroc Variation | |
| Oct 6, 2024 | De Simone Sorrentino | 0–1 | Kwiatkowski | 46th International Chess Open Citta di Arco - A | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Oct 5, 2024 | Kwiatkowski | ½–½ | Petrosino | 46th International Chess Open Citta di Arco - A | Old Indian Defense: Czech Variation, with Nf3 | |
| Jul 25, 2024 | Udipi | ½–½ | Kwiatkowski | Biel Chess Festival MTO | Bogo-Indian Defense: Nimzowitsch Variation | |
| Jul 24, 2024 | Federer | 1–0 | Kwiatkowski | Biel Chess Festival MTO | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 23, 2024 | Kwiatkowski | 0–1 | Song | Biel Chess Festival MTO | Italian Game: Classical Variation, Greco Gambit | |
| Jul 22, 2024 | Kwiatkowski | 1–0 | Gueci | Biel Chess Festival MTO | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jul 20, 2024 | Boldoo | 1–0 | Kwiatkowski | Biel Chess Festival MTO | Nimzo-Indian Defense: Reshevsky Variation | |
| Jul 19, 2024 | Jaggy | ½–½ | Kwiatkowski | Biel Chess Festival MTO | Benoni Defense: Fianchetto Variation | |
| Jul 18, 2024 | Kwiatkowski | ½–½ | Munkhzul | Biel Chess Festival MTO | Petrov's Defense: Modern Attack, Center Variation | |
| Jul 17, 2024 | Kwiatkowski | 1–0 | Ohler | Biel Chess Festival MTO | Caro-Kann Defense: Advance Variation | |
| Jul 16, 2024 | Kersten | ½–½ | Kwiatkowski | Biel Chess Festival MTO | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Jul 15, 2024 | Padmini | 1–0 | Kwiatkowski | Biel Chess Festival MTO | King's Indian Attack | |
| Jul 13, 2024 | Kwiatkowski | 1–0 | Oegruek | Biel Chess Festival 960 | ? | |
| Jul 13, 2024 | Kwiatkowski | 1–0 | Chen | Biel Chess Festival 960 | ? | |
| Jul 13, 2024 | Kwiatkowski | ½–½ | Wiesmann | Biel Chess Festival 960 | ? | |
| Jul 13, 2024 | Kwiatkowski | 0–1 | Angst | Biel Chess Festival 960 | ? | |
| Jul 13, 2024 | Xiao | 1–0 | Kwiatkowski | Biel Chess Festival 960 | ? | |
| Jul 13, 2024 | Kueng | 1–0 | Kwiatkowski | Biel Chess Festival 960 | ? | |
| Jul 13, 2024 | Olarte | 0–1 | Kwiatkowski | Biel Chess Festival 960 | ? | |
| May 9, 2024 | Toktomushev | 1–0 | Kwiatkowski | Bundesturnier | Bogo-Indian Defense: Nimzowitsch Variation | |
| Mar 28, 2024 | Bazakutsa | 1–0 | Kwiatkowski | Grenke Chess Open 2024 | English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit | |
| Jul 17, 2023 | Kwiatkowski | 0–1 | Peng | Schweizer Einzelmeisterschaft 2023 Masters | Philidor Defense: Lion Variation, Shirov Gambit | |
| May 29, 2023 | Kwiatkowski | 1–0 | Schellenberg | Schweizer Jugend Einzelmeisterschaft 2023 U16 | Scandinavian Defense: Marshall Variation | |
| May 28, 2023 | Artan | 0–1 | Kwiatkowski | Schweizer Jugend Einzelmeisterschaft 2023 U16 | Sicilian Defense: Najdorf Variation | |
| May 28, 2023 | Hirzel | ½–½ | Kwiatkowski | Schweizer Jugend Einzelmeisterschaft 2023 U16 | Catalan Opening: Open Defense | |
| May 27, 2023 | Kwiatkowski | ½–½ | Rotunno | Schweizer Jugend Einzelmeisterschaft 2023 U16 | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| May 27, 2023 | Kwiatkowski | 1–0 | Rappazzo | Schweizer Jugend Einzelmeisterschaft 2023 U16 | Sicilian Defense: Moscow Variation | |
| May 26, 2023 | Kwiatkowski | 1–0 | Dueck | Schweizer Jugend Einzelmeisterschaft 2023 U16 | Modern Defense: Standard Defense | |
| May 26, 2023 | Kostov | 0–1 | Kwiatkowski | Schweizer Jugend Einzelmeisterschaft 2023 U16 | Sicilian Defense: Najdorf Variation | |
| Oct 23, 2022 | Micallef | * | Kwiatkowski | World Amateur CC U1700 | ? | |
| Oct 22, 2022 | Kwiatkowski | * | Gautier | World Amateur CC U1700 | ? | |
| — | Kwiatkowski | 0–1 | Perreard | Schweizer Einzelmeisterschaft 2023 Masters | ? | |
| — | Borsos | 1–0 | Kwiatkowski | Schweizer Einzelmeisterschaft 2023 Masters | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |