| Jul 13, 2026 | Serafin | 0–1 | Szuminski | Blitz C14 | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |
| Jul 13, 2026 | Szuminski | ½–½ | Wolak | Blitz C14 | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 13, 2026 | Gibala | 1–0 | Szuminski | Blitz C14 | Queen's Indian Accelerated | |
| Jul 13, 2026 | Szuminski | 1–0 | Korszanski | Blitz C14 | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 13, 2026 | Meler | 0–1 | Szuminski | Blitz C14 | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Jul 13, 2026 | Szuminski | 1–0 | Kilarski | Blitz C14 | Nimzo-Larsen Attack: Classical Variation | |
| Jul 13, 2026 | Chiszko | 1–0 | Szuminski | Blitz C14 | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |
| Jul 13, 2026 | Szuminski | 1–0 | Pawlicz | Blitz C14 | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 12, 2026 | Szuminski | ½–½ | Wolak | Rapid C14 | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 12, 2026 | Serafin | 1–0 | Szuminski | Rapid C14 | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |
| Jul 12, 2026 | Szuminski | 1–0 | Szeszycki | Rapid C14 | Zukertort Opening: Queen's Gambit Invitation | |
| Jul 12, 2026 | Iwulski | ½–½ | Szuminski | Rapid C14 | Sicilian Defense: French Variation | |
| Jul 11, 2026 | Szuminski | ½–½ | Olejko | Rapid C14 | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 11, 2026 | Kret | ½–½ | Szuminski | Rapid C14 | Pseudo Queen's Indian Defense | |
| Jul 9, 2026 | Szuminski | 0–1 | Bednarek | rzeszow | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 9, 2026 | Bednarek | ½–½ | Szuminski | rzeszow | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Jul 9, 2026 | Szuminski | 1–0 | Velim | rzeszow | Zukertort Opening: Kingside Fianchetto | |
| Jul 9, 2026 | Velim | ½–½ | Szuminski | rzeszow | Sicilian Defense: Smith-Morra Gambit | |
| Jul 9, 2026 | Szuminski | ½–½ | Brzezina | rzeszow | Nimzo-Larsen Attack: Classical Variation | |
| Jul 9, 2026 | Brzezina | 0–1 | Szuminski | rzeszow | Queen's Indian Accelerated | |
| Jul 9, 2026 | Szuminski | 0–1 | Radzimski | rzeszow | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 9, 2026 | Radzimski | 1–0 | Szuminski | rzeszow | English Opening: King's English Variation | |
| Jul 6, 2026 | Szuminski | 0–1 | Gibala | rzeszow | Zukertort Opening: Nimzo-Larsen Variation | |
| Jan 11, 2026 | Jaroch | 0–1 | Szuminski | Round 9: Jaroch, Pawel - Szuminski, Jakub | Queen's Indian Defense: Classical Variation, Traditional Variation, Nimzowitsch Line | |
| Jan 11, 2026 | Szuminski | 1–0 | Konrad Anuszkiewicz | Round 8: Szuminski, Jakub - Konrad Anuszkiewicz | Sicilian Defense: Kan Variation, Polugaevsky Variation | |
| Jan 11, 2026 | Plesiuk | 0–1 | Szuminski | Round 7: Plesiuk, Jan - Szuminski, Jakub | Nimzo-Indian Defense: St. Petersburg Variation | |
| Jan 11, 2026 | Szuminski | 0–1 | Ryszkiewicz | Round 6: Szuminski, Jakub - Ryszkiewicz, Adam | Scandinavian Defense: Main Line | |
| Jan 11, 2026 | Szuminski | 1–0 | Jan Kozlowski | Round 5: Szuminski, Jakub - Jan Kozlowski | Sicilian Defense: Dragon Variation, Accelerated Dragon | |
| Jan 11, 2026 | Jedynak | 1–0 | Szuminski | Round 4: Jedynak, Radoslaw - Szuminski, Jakub | Nimzo-Indian Defense: Classical Variation, Berlin Variation, Pirc Variation | |
| Jan 11, 2026 | Szuminski | 1–0 | Kotarski | Round 3: Szuminski, Jakub - Kotarski, Bartosz | Sicilian Defense: French Variation, Normal | |
| Jan 11, 2026 | Filipkowska | 0–1 | Szuminski | Round 2: Filipkowska, Martyna - Szuminski, Jakub | Sicilian Defense: French Variation | |
| Jan 11, 2026 | Szuminski | 1–0 | Cwalina | Round 1: Szuminski, Jakub - Cwalina, Dariusz | Three Knights Opening | |
| Dec 30, 2025 | Madejski | ½–½ | Szuminski | Runda 9: Madejski, Milosz - Szuminski, Jakub | Catalan Opening | |
| Dec 30, 2025 | Szuminski | 1–0 | Jaszczuk | Runda 8: Szuminski, Jakub - Jaszczuk, Piotr | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 30, 2025 | Businski | ½–½ | Szuminski | Runda 7: Businski, Jan - Szuminski, Jakub | Queen's Pawn Game: Symmetrical Variation | |
| Dec 29, 2025 | Szuminski | 0–1 | Reshetniak | Runda 6: Szuminski, Jakub - Reshetniak, Vitaliy | Sicilian Defense: Kan Variation, Swiss Cheese Variation | |
| Dec 29, 2025 | Szuminski | 1–0 | Zielinski | Runda 5: Szuminski, Jakub - Zielinski, Krzysztof | Nimzo-Larsen Attack: Classical Variation | |
| Dec 28, 2025 | Padalka | ½–½ | Szuminski | Runda 4: Padalka, Artem - Szuminski, Jakub | Nimzo-Indian Defense: St. Petersburg Variation | |
| Dec 27, 2025 | Szuminski | ½–½ | Budzisz | Runda 3: Szuminski, Jakub - Budzisz, Adrian | Sicilian Defense: Kveinis Variation | |
| Dec 27, 2025 | Lewczuk | 0–1 | Szuminski | Runda 2: Lewczuk, Jakub - Szuminski, Jakub | Bird Opening: Dutch Variation | |
| Dec 27, 2025 | Szuminski | 1–0 | Borowik | Runda 1: Szuminski, Jakub - Borowik, Monika | Sicilian Defense: Najdorf Variation | |
| Aug 2, 2024 | Szuminski | 0–1 | Gibala | Rapid C12 | Saragossa Opening | |
| Aug 2, 2024 | Szuminski | 0–1 | Zawal | Rapid C12 | Zukertort Opening | |
| — | Szuminski | 1–0 | Modzelan | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| — | Szuminski | 1–0 | Wardzala | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Kan Variation, Modern Variation | |
| — | Szuminski | 1–0 | Janeczek | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| — | Szuminski | 1–0 | Chmielek | Mistrzostwa Polski Juniorów w szachach szybkich c12 | English Opening: Agincourt Defense, Wimpy System | |
| — | Szuminski | ½–½ | Kaleta | Mistrzostwa Polski Juniorów w szachach b?yskawicznych C12 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| — | Szuminski | 1–0 | Banasiak | Mistrzostwa Polski Juniorów w szachach b?yskawicznych C12 | Nimzo-Larsen Attack: Classical Variation | |
| — | Szuminski | ½–½ | Zieba | Mistrzostwa Polski Juniorów w szachach b?yskawicznych C12 | Nimzo-Larsen Attack: Modern Variation | |
| — | Jamka | ½–½ | Szuminski | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Queen's Gambit Declined | |
| — | Bednarek | 1–0 | Szuminski | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| — | Gorka | 0–1 | Szuminski | Mistrzostwa Polski Juniorów w szachach szybkich c12 | Sicilian Defense: McDonnell Attack | |
| — | Gorgolewski | 0–1 | Szuminski | Mistrzostwa Polski Juniorów w szachach b?yskawicznych C12 | Semi-Slav Defense: Accelerated Move Order | |