| Jun 27, 2026 | Rudnev | 1–0 | Jaszczuk | Macieja Memorial | Sicilian Defense: Closed | |
| Jun 1, 2026 | Jaszczuk | 1–0 | Bogdan | XXVIII MISTRZOSTWA WOJEWÓDZTWA PODLASKIEGO JUNIORÓW DO LAT 18 | Caro-Kann Defense: Tartakower Variation | |
| Jun 1, 2026 | Bartnik | ½–½ | Jaszczuk | XXVIII MISTRZOSTWA WOJEWÓDZTWA PODLASKIEGO JUNIORÓW DO LAT 18 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jun 1, 2026 | Jaszczuk | 1–0 | Rydzewski | XXVIII MISTRZOSTWA WOJEWÓDZTWA PODLASKIEGO JUNIORÓW DO LAT 18 | Caro-Kann Defense: Tartakower Variation | |
| Jun 1, 2026 | Bogdan | 0–1 | Jaszczuk | XXVIII MISTRZOSTWA WOJEWÓDZTWA PODLASKIEGO JUNIORÓW DO LAT 18 | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |
| Jun 1, 2026 | Jaszczuk | ½–½ | Bartnik | XXVIII MISTRZOSTWA WOJEWÓDZTWA PODLASKIEGO JUNIORÓW DO LAT 18 | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Jun 1, 2026 | Rydzewski | 1–0 | Jaszczuk | XXVIII MISTRZOSTWA WOJEWÓDZTWA PODLASKIEGO JUNIORÓW DO LAT 18 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 30, 2025 | Kicinska | ½–½ | Jaszczuk | Runda 9: Kicinska, Magdalena - Jaszczuk, Piotr | King's Indian Defense: Fianchetto Variation | |
| Dec 30, 2025 | Szuminski | 1–0 | Jaszczuk | Runda 8: Szuminski, Jakub - Jaszczuk, Piotr | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 30, 2025 | Jaszczuk | 1–0 | Maciejewski | Runda 7: Jaszczuk, Piotr - Maciejewski, Kamil | Ruy Lopez: Closed | |
| Dec 29, 2025 | Czachurski | ½–½ | Jaszczuk | Runda 6: Czachurski, Ignacy - Jaszczuk, Piotr | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 29, 2025 | Jaszczuk | 0–1 | Budzisz | Runda 5: Jaszczuk, Piotr - Budzisz, Adrian | Pirc Defense | |
| Dec 28, 2025 | Ryszkiewicz | 0–1 | Jaszczuk | Runda 4: Ryszkiewicz, Adam - Jaszczuk, Piotr | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 27, 2025 | Jaszczuk | 0–1 | Jakubowska | Runda 1: Jaszczuk, Piotr - Jakubowska, Anna | Caro-Kann Defense: Tartakower Variation | |
| Sep 20, 2025 | Jaszczuk | * | Wolak | Szansa25 | ? | |
| Sep 20, 2025 | Wojdak | * | Jaszczuk | Szansa25 | ? | |
| Sep 20, 2025 | Jaszczuk | * | Jasiulewicz | Szansa25 | ? | |
| Sep 20, 2025 | Oszutowski | * | Jaszczuk | Szansa25 | ? | |
| Sep 20, 2025 | Jaszczuk | * | Barouski | Szansa25 | ? | |
| Sep 20, 2025 | Broda | * | Jaszczuk | Szansa25 | ? | |
| Sep 20, 2025 | Jaszczuk | * | Leskiewicz | Szansa25 | ? | |
| Sep 20, 2025 | Barwinska | * | Jaszczuk | Szansa25 | ? | |
| Sep 20, 2025 | Jaszczuk | * | Kubicka | Szansa25 | ? | |
| Sep 20, 2025 | Budzisz | * | Jaszczuk | Szansa25 | ? | |
| Jun 26, 2025 | Jaszczuk | ½–½ | Macura | II DMP Juniorow | Petrov's Defense: Karklins-Martinovsky Variation | |
| Jun 25, 2025 | Nawrocki | 1–0 | Jaszczuk | II DMP Juniorow | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Jun 24, 2025 | Jaszczuk | 0–1 | Borowik | II DMP Juniorow | Sicilian Defense: Modern Variations, Main Line | |
| Jun 23, 2025 | Lapczynski | 0–1 | Jaszczuk | II DMP Juniorow | King's Indian Defense: Steiner Attack | |
| Jun 22, 2025 | Jaszczuk | 0–1 | Rajlich | II DMP Juniorow | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jun 21, 2025 | Borowik | 0–1 | Jaszczuk | II DMP Juniorow | Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line | |
| Jun 20, 2025 | Jaszczuk | ½–½ | Smolinski | II DMP Juniorow | Modern Defense: Standard Line | |
| Jun 19, 2025 | Dobosiewicz | ½–½ | Jaszczuk | II DMP Juniorow | King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation | |
| Jun 18, 2025 | Jaszczuk | ½–½ | Lipiak | II DMP Juniorow | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Sep 22, 2024 | Jaszczuk | * | Brzezina | Szansa Rapid 2024 | ? | |
| Sep 22, 2024 | Jaszczuk | * | Jasiulewicz | Szansa Rapid 2024 | ? | |
| Sep 22, 2024 | Jaszczuk | * | Niezhentsev | Szansa Rapid 2024 | ? | |
| Sep 22, 2024 | Jaszczuk | * | Owczarski | Szansa Rapid 2024 | ? | |
| Sep 22, 2024 | Hartlinski | * | Jaszczuk | Szansa Rapid 2024 | ? | |
| Sep 22, 2024 | Pyrih | 1–0 | Jaszczuk | Szansa Rapid 2024 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Sep 22, 2024 | Krasenkowa | * | Jaszczuk | Szansa Rapid 2024 | ? | |
| Sep 22, 2024 | Gasik | * | Jaszczuk | Szansa Rapid 2024 | ? | |
| Sep 21, 2024 | Jaszczuk | 0–1 | Koziorowicz | new tournament description | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Sep 21, 2024 | Jaszczuk | * | Grochowski | new tournament description | ? | |
| Sep 21, 2024 | Grudzien | * | Jaszczuk | new tournament description | ? | |
| Sep 21, 2024 | Zeissel | 1–0 | Jaszczuk | new tournament description | Sicilian Defense: Old Sicilian | |
| Jul 8, 2024 | Jaszczuk | 0–1 | Zatonskih | Macieja Memorial | Scandinavian Defense: Gubinsky-Melts Defense | |
| Jul 8, 2024 | Janeczko | 1–0 | Jaszczuk | Macieja Memorial | Sicilian Defense | |
| Jul 8, 2024 | Izafatava | 1–0 | Jaszczuk | Macieja Memorial | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jul 8, 2024 | Galczynski | 1–0 | Jaszczuk | Macieja Memorial | Sicilian Defense: Portsmouth Gambit | |
| Jul 19, 2023 | Lewandrowski | ½–½ | Jaszczuk | Najdorf Memorial B | Indian Defense: West Indian Defense | |
| Jul 18, 2023 | Jaszczuk | 1–0 | Poziomkowski | Najdorf Memorial B | Pirc Defense | |
| Jul 17, 2023 | Bartoszewicz | 0–1 | Jaszczuk | Najdorf Memorial B | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jul 13, 2023 | Suska | 1–0 | Jaszczuk | Najdorf Memorial B | Sicilian Defense: Closed | |
| Jul 12, 2023 | Jaszczuk | ½–½ | Polak | Najdorf Memorial B | Ruy Lopez: Morphy Defense | |
| Jun 20, 2023 | Jaszczuk | 1–0 | Zmarzly | DMPJ - I Liga 2023 | Sicilian Defense: Mengarini Variation | |
| Jun 19, 2023 | Pycinski | 1–0 | Jaszczuk | DMPJ - I Liga 2023 | Sicilian Defense: Lasker-Pelikan Variation | |
| Jun 18, 2023 | Morozov | 0–1 | Jaszczuk | DMPJ - I Liga 2023 | Sicilian Defense: Closed | |
| Jun 17, 2023 | Jaszczuk | 1–0 | Kisiel | DMPJ - I Liga 2023 | Sicilian Defense: Najdorf Variation | |
| Jun 16, 2023 | Jaszczuk | 1–0 | Kisiel | DMPJ - I Liga 2023 | Sicilian Defense: Najdorf Variation | |
| Jun 15, 2023 | Liskiewicz | ½–½ | Jaszczuk | DMPJ - I Liga 2023 | Trompowsky Attack | |
| Jun 14, 2023 | Jaszczuk | ½–½ | Witczak | DMPJ - I Liga 2023 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Jun 13, 2023 | Jaszczuk | 0–1 | Kania | DMPJ - I Liga 2023 | Sicilian Defense: Najdorf Variation, English Attack | |
| Dec 16, 2022 | Jaszczuk | 0–1 | Haydon | ebrcc2022 | Bird Opening | |
| Dec 16, 2022 | Haydon | 1–0 | Jaszczuk | ebrcc2022 | Zukertort Opening: Sicilian Invitation | |
| Dec 17, 2021 | Wieczorek | 1–0 | Jaszczuk | European Blitz Chess Championship 2021 | Sicilian Defense: French Variation | |
| Nov 21, 2021 | Nagly | 1–0 | Jaszczuk | pmpjc13 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Nov 20, 2021 | Jaszczuk | ½–½ | Maciaga | pmpjc13 | Sicilian Defense: Pin Variation | |
| Nov 19, 2021 | Jaszczuk | 1–0 | Blaszkiewicz | pmpjc13 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Nov 18, 2021 | Spytek | 0–1 | Jaszczuk | pmpjc13 | Indian Defense | |
| Nov 18, 2021 | Wieckowski | 1–0 | Jaszczuk | pmpjc13 | English Opening: King's English Variation, Troger Defense | |
| Nov 17, 2021 | Jaszczuk | 0–1 | Nagly | pmpjc13 | Pirc Defense | |
| Nov 16, 2021 | Jaszczuk | ½–½ | Osinski | pmpjc13 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Nov 16, 2021 | Bartnik | 1–0 | Jaszczuk | pmpjc13 | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Nov 15, 2021 | Jaszczuk | 1–0 | Saletra | pmpjc13 | French Defense: King's Indian Attack | |
| — | Jaszczuk | * | Serafin | new tournament description | ? | |
| — | Jaszczuk | 1–0 | Celinski | new tournament description | Ruy Lopez: Closed | |
| — | Jaszczuk | * | Zysik | Szansa Rapid 2024 | ? | |
| — | Jaszczuk | 0–1 | Bochniak | C16 | ? | |
| — | Jaszczuk | 0–1 | Czuchryta | C16b | French Defense: Normal Variation | |
| — | Kulesh | * | Jaszczuk | new tournament description | ? | |
| — | Kowalski | 0–1 | Jaszczuk | new tournament description | King's Indian Attack: Symmetrical Defense | |