| Jun 26, 2025 | Galczynski | 1–0 | Lapczynski | II DMP Juniorow | Sicilian Defense: Portsmouth Gambit | |
| Jun 25, 2025 | Lapczynski | ½–½ | Oberc | II DMP Juniorow | Nimzo-Indian Defense: Spielmann Variation | |
| Jun 24, 2025 | Zasada | 1–0 | Lapczynski | II DMP Juniorow | Sicilian Defense: Kalashnikov Variation | |
| Jun 23, 2025 | Lapczynski | 0–1 | Jaszczuk | II DMP Juniorow | King's Indian Defense: Steiner Attack | |
| Jun 22, 2025 | Lechowski | 1–0 | Lapczynski | II DMP Juniorow | Réti Opening: Réti Accepted | |
| Jun 21, 2025 | Lapczynski | 1–0 | Zajac | II DMP Juniorow | Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit | |
| Jun 20, 2025 | Herka | 1–0 | Lapczynski | II DMP Juniorow | Queen's Pawn Game: Krause Variation | |
| Jun 19, 2025 | Lapczynski | ½–½ | Zgoda | II DMP Juniorow | Nimzo-Indian Defense: Spielmann Variation | |
| Jun 18, 2025 | Stachowiak | 1–0 | Lapczynski | II DMP Juniorow | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Aug 2, 2024 | Lapczynski | 0–1 | Skrzypinski | Mistrzostwa Polski Juniorów - C16 RAPID | Benoni Defense: Czech Benoni Defense | |
| Jun 20, 2023 | Lapczynski | 1–0 | Kisiel | DMPJ - I Liga 2023 | King's Indian Defense: Steiner Attack | |
| Jun 19, 2023 | Zmarzly | 1–0 | Lapczynski | DMPJ - I Liga 2023 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Jun 18, 2023 | Niesyt | 1–0 | Lapczynski | DMPJ - I Liga 2023 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jun 17, 2023 | Lapczynski | ½–½ | Morozov | DMPJ - I Liga 2023 | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Jun 16, 2023 | Lapczynski | ½–½ | Morozov | DMPJ - I Liga 2023 | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Jun 15, 2023 | Pycinski | 1–0 | Lapczynski | DMPJ - I Liga 2023 | Queen's Pawn Game: Zukertort Variation | |
| Jun 14, 2023 | Adamczyk | 0–1 | Lapczynski | DMPJ - I Liga 2023 | London System | |
| Jun 13, 2023 | Nawalaniec | ½–½ | Lapczynski | DMPJ - I Liga 2023 | Sicilian Defense: Accelerated Dragon | |
| Aug 9, 2022 | Kucab | * | Lapczynski | III Letni Puchar Malopolski - Tauron 2022 | ? | |
| Aug 8, 2022 | Lapczynski | 0–1 | Spytek | III Letni Puchar Malopolski - Tauron 2022 | Neo-Grünfeld Defense: Goglidze Attack | |
| Aug 5, 2022 | Lapczynski | * | Osinski | III Letni Puchar Malopolski - Tauron 2022 | ? | |
| Aug 5, 2022 | Orlowski | 1–0 | Lapczynski | III Letni Puchar Malopolski - Tauron 2022 | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| Aug 4, 2022 | Lapczynski | * | Benda | III Letni Puchar Malopolski - Tauron 2022 | ? | |
| Aug 4, 2022 | Kedzierski | 1–0 | Lapczynski | III Letni Puchar Malopolski - Tauron 2022 | Queen's Gambit Accepted: Gunsberg Defense | |
| — | Lapczynski | 0–1 | Przybylski | C16 | Nimzo-Indian Defense: Spielmann Variation | |
| — | Lapczynski | 1–0 | Idzior | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | Benoni Defense: King's Pawn Line, with Bg5 | |
| — | Lapczynski | ½–½ | Jaroszewski | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | Nimzo-Indian Defense: Spielmann Variation, Carlsbad Variation | |
| — | Lapczynski | 1–0 | Karpinski | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| — | Lapczynski | 1–0 | Weryho | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | Horwitz Defense | |
| — | Jasiulewicz | 1–0 | Lapczynski | C16b | Queen's Gambit Accepted: Gunsberg Defense | |
| — | Chibowski | ½–½ | Lapczynski | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | French Defense: Exchange Variation | |
| — | Sobieraj | ½–½ | Lapczynski | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | Queen's Gambit Accepted: Gunsberg Defense | |
| — | Klama | 0–1 | Lapczynski | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | French Defense: Advance Variation, Euwe Variation | |
| — | Wilgosz | ½–½ | Lapczynski | 61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D | French Defense: Advance Variation, Milner-Barry Gambit, Main Line | |
