| Jun 15, 2025 | Szeszycki | 1–0 | Kolanowski | MWJ | Sicilian Defense: Najdorf Variation, Polugaevsky Variation | |
| Jun 14, 2025 | Maciejewski | ½–½ | Szeszycki | MWJ | Sicilian Defense: Najdorf Variation, Main Line | |
| Jun 14, 2025 | Wilusz | ½–½ | Szeszycki | MWJ | French Defense: Exchange Variation | |
| Jun 12, 2025 | Szeszycki | 1–0 | Jasinski | MWJ | Scandinavian Defense: Portuguese Gambit, Classical Variation | |
| Jun 12, 2025 | Wysokowicz | ½–½ | Szeszycki | MWJ | Benko Gambit Accepted: Modern Variation | |
| Jun 11, 2025 | Szeszycki | 0–1 | Kilarski | MWJ | English Opening: Symmetrical Variation, Botvinnik System | |
| Jun 11, 2025 | Uryga | 0–1 | Szeszycki | MWJ | Sicilian Defense: O'Kelly Variation, Normal System | |
| Jun 11, 2025 | Szeszycki | 1–0 | Sura | MWJ | French Defense: Advance Variation, Main Line | |
| Jun 10, 2025 | Galus | 0–1 | Szeszycki | MWJ | Sicilian Defense: Lasker-Pelikan Variation, Retreat Variation | |
| Jun 3, 2024 | Szeszycki | 1–0 | Ford | xd | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Jun 2, 2024 | Szeszycki | 1–0 | Maciejewski | xd | Sicilian Defense: Hyperaccelerated Fianchetto | |
| Jun 2, 2024 | Szczepanik | 0–1 | Szeszycki | xd | Grünfeld Defense: Exchange Variation, Modern Exchange Variation | |
| Jun 1, 2024 | Szeszycki | 1–0 | Jasinski | xd | Petrov's Defense: French Attack | |
| Jun 1, 2024 | Kilarski | 0–1 | Szeszycki | xd | King's Indian Defense: Makogonov Variation | |
| May 31, 2024 | Wysokowicz | 0–1 | Szeszycki | xd | Indian Defense | |
| May 30, 2024 | Szeszycki | 1–0 | Trzcinski | xd | Sicilian Defense: Hyperaccelerated Fianchetto | |
| May 30, 2024 | Mucha | ½–½ | Szeszycki | xd | French Defense: Advance Variation, Paulsen Attack | |
| Jun 22, 2023 | Olejko | 0–1 | Szeszycki | DMP II Liga Mecz 10 | King's Indian Attack: Symmetrical Defense | |
| Jun 20, 2023 | Szeszycki | 1–0 | Hrytsiv | DMP II Liga Mecz 9 | Petrov's Defense: Stafford Gambit | |
| Jun 19, 2023 | Smolinski | 1–0 | Szeszycki | DMP II Liga Mecz 7 | Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense | |
| Jun 18, 2023 | Szeszycki | ½–½ | Rzap | DMP II Liga Mecz 8 | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Jun 17, 2023 | Stachowiak | 1–0 | Szeszycki | DMP II Liga Mecz 10 | Sicilian Defense: Staunton-Cochrane Variation | |
| Jun 16, 2023 | Szeszycki | ½–½ | Krogulski | DMP II Liga Mecz 7 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Jun 15, 2023 | Chmielnicki | 1–0 | Szeszycki | DMP II Liga Mecz 8 | ? | |
| — | Szeszycki | 1–0 | Janeczek | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Godiva Variation | |
| — | Szeszycki | 0–1 | Nakonechnyi | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Dragon Variation, Classical Variation | |
| — | Szeszycki | 0–1 | Zieba | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Petrov's Defense: Classical Attack | |
| — | Szeszycki | ½–½ | Zajadlak | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Caro-Kann Defense: Exchange Variation | |
| — | Szeszycki | ½–½ | Kopacki | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| — | Szeszycki | 1–0 | Cichocki | Mistrzostwa Polski Juniorów w szachach b?yskawicznych C12 | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| — | Szeszycki | 1–0 | Karas | Mistrzostwa Polski Juniorów w szachach b?yskawicznych C12 | French Defense: Advance Variation, Main Line | |
| — | Niewiadomski | 0–1 | Szeszycki | Mistrzostwa Polski Juniorów w szachach szybkich c12 | King's Indian Attack: Symmetrical Defense | |
| — | Bochnia | 0–1 | Szeszycki | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| — | Cichecki | 0–1 | Szeszycki | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| — | Mazgaj | 0–1 | Szeszycki | Mistrzostwa Polski Juniorów w szachach b?yskawicznych C12 | Sicilian Defense: Lasker-Pelikan Variation | |