| Jul 19, 2025 | Szymkiewicz | 0–1 | David | Round 1: Szymkiewicz, Witold - David, Alberto | Indian Defense: Anti-Nimzo-Indian | |
| Jun 21, 2025 | Szymkiewicz | 0–1 | Duda | DMPJ 1 liga 2025 | King's Indian Defense: Makogonov Variation | |
| Jun 20, 2025 | Dylong | ½–½ | Szymkiewicz | DMPJ 1 liga 2025 | Nimzo-Larsen Attack: Classical Variation | |
| Jun 17, 2025 | Szymkiewicz | ½–½ | Wandor | DMPJ 1 liga 2025 | Indian Defense: Anti-Nimzo-Indian | |
| Jun 16, 2025 | Kutowski | 1–0 | Szymkiewicz | DMPJ 1 liga 2025 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jun 15, 2025 | Szymkiewicz | ½–½ | Zieba | DMPJ 1 liga 2025 | Queen's Pawn Game: London System | |
| Jun 14, 2025 | Musial | ½–½ | Szymkiewicz | DMPJ 1 liga 2025 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Feb 10, 2025 | Szymkiewicz | ½–½ | Mazi | Round 4: Szymkiewicz, Witold - Mazi, Leon | Old Indian Defense: Ukrainian Variation | |
| Feb 15, 2025 | De Bona | 0–1 | Szymkiewicz | Round 9: De Bona, Filippo - Szymkiewicz, Witold | Benko Gambit Accepted: Dlugy Variation | |
| Feb 14, 2025 | Szymkiewicz | ½–½ | Yu | Round 8: Szymkiewicz, Witold - Yu, Shuxiao | Grünfeld Defense: Exchange Variation | |
| Feb 13, 2025 | Akshat | ½–½ | Szymkiewicz | Round 7: Akshat, Khamparia - Szymkiewicz, Witold | Slav Defense: Exchange Variation | |
| Feb 12, 2025 | Szymkiewicz | ½–½ | Marakovits | Round 6: Szymkiewicz, Witold - Marakovits, Nico | English Opening: Symmetrical Variation, Hedgehog Defense | |
| Feb 11, 2025 | Platzgummer | ½–½ | Szymkiewicz | Round 5: Platzgummer, Fabian - Szymkiewicz, Witold | English Opening: Agincourt Defense, Wimpy System | |
| Feb 9, 2025 | Voege | ½–½ | Szymkiewicz | Round 3: Voege, Tobias - Szymkiewicz, Witold | Slav Defense: Exchange Variation, Boor Attack | |
| Aug 25, 2024 | Zhakan | 1–0 | Szymkiewicz | rubinstein24-a1 | Center Game: Paulsen Attack Variation | |
| Aug 24, 2024 | Szymkiewicz | ½–½ | Majocha | rubinstein24-a1 | Indian Defense: Anti-Nimzo-Indian | |
| Aug 23, 2024 | Dziewonski | 1–0 | Szymkiewicz | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Caro-Kann Defense: Two Knights Attack | |
| Aug 22, 2024 | Szymkiewicz | 1–0 | Alimbetov | rubinstein24-a1 | Nimzo-Larsen Attack: Classical Variation | |
| Aug 21, 2024 | Rog | 1–0 | Szymkiewicz | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Aug 20, 2024 | Szymkiewicz | 1–0 | Napieralski | rubinstein24-a1 | Catalan Opening: Closed | |
| Aug 19, 2024 | Stachecki | 0–1 | Szymkiewicz | rubinstein24-a1 | Sicilian Defense: Najdorf Variation, English Attack, Anti-English | |
| Aug 18, 2024 | Szymkiewicz | 0–1 | Jarmula | 60. Jubileuszowy Miedzynarodowy Festiwal Szachowy Akiby Rubinsteina - OPEN A | Old Indian Defense: Ukrainian Variation | |
| Aug 17, 2024 | Matela | 0–1 | Szymkiewicz | rubinstein24-a1 | French Defense: Classical Variation, Delayed Exchange Variation | |
| Aug 3, 2024 | Szymkiewicz | ½–½ | Kutowski | Mistrzostwa Polski Juniorow w Szachach Szybkich - C18 | Indian Defense: Knights Variation | |
| Aug 3, 2024 | Szymkiewicz | 0–1 | Klimkowski | Mistrzostwa Polski Juniorow w Szachach Szybkich - C18 | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Aug 3, 2024 | Backiel | ½–½ | Szymkiewicz | Mistrzostwa Polski Juniorow w Szachach Szybkich - C18 | Queen's Gambit Declined: Semi-Tarrasch Defense, San Sebastian Variation | |
| Aug 2, 2024 | Szymkiewicz | 0–1 | Wnek | Mistrzostwa Polski Juniorow w Szachach Szybkich - C18 | Dutch Defense: Hopton Attack | |
| Aug 2, 2024 | Szymkiewicz | 1–0 | Madajczak | Mistrzostwa Polski Juniorow w Szachach Szybkich - C18 | Queen's Indian Defense: Kasparov Variation | |
| Aug 2, 2024 | Kejna | 0–1 | Szymkiewicz | Mistrzostwa Polski Juniorow w Szachach Szybkich - C18 | French Defense: Burn Variation | |
| Jul 17, 2024 | Szymkiewicz | 1–0 | Sanz Losada | Najdorf Memorial | King's Indian Defense: Makogonov Variation | |
| Jul 16, 2024 | Zaninotto | ½–½ | Szymkiewicz | Najdorf Memorial | French Defense: Tarrasch Variation, Closed Variation | |
| Jul 15, 2024 | Szymkiewicz | ½–½ | Hury | Najdorf Memorial | King's Indian Defense: Makogonov Variation | |
| Jul 14, 2024 | Johannesson | 1–0 | Szymkiewicz | Najdorf Memorial | English Opening: King's English Variation | |
| Jul 13, 2024 | Szymkiewicz | ½–½ | Sprzeczka | Najdorf Memorial | King's Indian Attack: Symmetrical Defense | |
| Jul 12, 2024 | Sriram | 1–0 | Szymkiewicz | Najdorf Memorial | Zukertort Opening: Reversed Grünfeld | |
| Jul 11, 2024 | Szymkiewicz | 1–0 | Chmiel | Najdorf Memorial | Italian Game: Giuoco Piano | |
| Jul 10, 2024 | Chomczyk | ½–½ | Szymkiewicz | Najdorf Memorial | French Defense: Advance Variation, Paulsen Attack | |
| Jul 9, 2024 | Szymkiewicz | ½–½ | Romanishin | Najdorf Memorial | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Jun 22, 2023 | Kulig | ½–½ | Szymkiewicz | DMP II Liga Mecz 4 | Queen's Gambit Declined: Exchange Variation | |
| Jun 21, 2023 | Szymkiewicz | 1–0 | Bajer | DMP II Liga Mecz 3 | English Opening: Symmetrical Variation, Anti-Benoni Variation | |
| Jun 20, 2023 | Stepinski | 1–0 | Szymkiewicz | DMP II Liga Mecz 4 | French Defense: Tarrasch Variation, Eliskases Variation | |
| Jun 19, 2023 | Szymkiewicz | 1–0 | Doroba | DMP II Liga Mecz 6 | Queen's Gambit Declined: Lasker Defense | |
| Jun 18, 2023 | Wolak | 0–1 | Szymkiewicz | DMP II Liga Mecz 6 | French Defense: Exchange Variation | |
| Jun 17, 2023 | Szymkiewicz | 1–0 | Halhoul | DMP II Liga Mecz 3 | Semi-Slav Defense: Marshall Gambit, Forgotten Variation | |
| Jun 16, 2023 | Stanislawski | 0–1 | Szymkiewicz | DMP II Liga Mecz 7 | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Jun 15, 2023 | Szymkiewicz | 1–0 | Rychlik | DMP II Liga Mecz 3 | ? | |
| Nov 21, 2021 | Dembicki | 0–1 | Szymkiewicz | pmpjc15 | French Defense: Exchange Variation | |
| Nov 20, 2021 | Szymkiewicz | 0–1 | Cieply | pmpjc15 | Sicilian Defense: Classical Variation | |
| Nov 19, 2021 | Wesolek | ½–½ | Szymkiewicz | pmpjc15 | King's Indian Attack: Sicilian Variation | |
| Nov 18, 2021 | Szymkiewicz | 1–0 | Rumniak | pmpjc15 | Sicilian Defense: Hyperaccelerated Dragon | |
| Nov 18, 2021 | Zyto | ½–½ | Szymkiewicz | pmpjc15 | Queen's Gambit Declined: Exchange Variation, Reshevsky Variation | |
| Nov 17, 2021 | Szymkiewicz | ½–½ | Czak | pmpjc15 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Nov 16, 2021 | Szymkiewicz | 0–1 | Trzebinski | pmpjc15 | Sicilian Defense: Dragon Variation | |
| Nov 16, 2021 | Janusiewicz | 0–1 | Szymkiewicz | pmpjc15 | Caro-Kann Defense: Classical Variation | |
| Nov 15, 2021 | Bem | ½–½ | Szymkiewicz | pmpjc15 | Queen's Gambit Declined: Orthodox Defense, Botvinnik Variation | |
| — | Szymkiewicz | 0–1 | Ugorek | C18 | Sodium Attack | |
| — | Szymkiewicz | 1–0 | Zieba | C18b | Slav Defense: Exchange Variation | |
| — | Szymkiewicz | 1–0 | Ciupka | Rubinstein Chess Festival 2025 - OPEN A | Catalan Opening: Open Defense, Classical Line | |
| — | Szymkiewicz | ½–½ | Wodniczak | Rubinstein Chess Festival 2025 - OPEN A | Bogo-Indian Defense: Nimzowitsch Variation | |
| — | Szymkiewicz | ½–½ | Leszczewicz | Rubinstein Chess Festival 2025 - OPEN A | Nimzo-Larsen Attack: Classical Variation | |
| — | Szymkiewicz | 1–0 | Przybylski | Rubinstein Chess Festival 2025 - OPEN A | Benoni Defense: Snail Variation | |
| — | Kutowski | 1–0 | Szymkiewicz | C18 | French Defense: St. George Defense | |
| — | Kusiak | 1–0 | Szymkiewicz | C18b | French Defense: Classical Variation, Burn Variation | |
| — | Szydelko | 1–0 | Szymkiewicz | Rubinstein Chess Festival 2025 - OPEN A | Caro-Kann Defense: Two Knights Attack | |
| — | Slusarczyk | 0–1 | Szymkiewicz | Rubinstein Chess Festival 2025 - OPEN A | Queen's Pawn Game: Accelerated London System | |
| — | Siennicki | 1–0 | Szymkiewicz | Rubinstein Chess Festival 2025 - OPEN A | Caro-Kann Defense: Tartakower Variation | |
| — | Derejczyk | 0–1 | Szymkiewicz | Rubinstein Chess Festival 2025 - OPEN A | English Opening: King's English Variation | |
| — | Zareba | 1–0 | Szymkiewicz | Rubinstein Chess Festival 2025 - OPEN A | Caro-Kann Defense: Two Knights Attack | |
