| 19 abr 2026 | Kolosowski, Mateusz 2444 | Sanal, Vahap 2551 | ½-½ | B23 Defensa Siciliana: Closed | EICC 2026 | 51 | Ver |
| 18 abr 2026 | David, Alexandru-Vasile 2314 | Kolosowski, Mateusz 2444 | 0-1 | D45 Defensa Semieslava: Stoltz Variation | EICC 2026 | 37 | Ver |
| 16 abr 2026 | Kolosowski, Mateusz 2444 | Kucza, Karol 2320 | ½-½ | D45 Defensa Semieslava: Normal Variation | EICC 2026 | 51 | Ver |
| 15 abr 2026 | Kejna, Piotr 2311 | Kolosowski, Mateusz 2444 | ½-½ | A28 Apertura Inglesa: King's English Variation, Four Knights Variation, Flexible Line | EICC 2026 | 54 | Ver |
| 14 abr 2026 | Kolosowski, Mateusz 2444 | Warmerdam, Max 2545 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Tal Variation | EICC 2026 | 39 | Ver |
| 13 abr 2026 | Zawadzka, Jolanta 2324 | Kolosowski, Mateusz 2444 | 0-1 | B01 Defensa Escandinava: Gubinsky-Melts Defense | EICC 2026 | 63 | Ver |
| 12 abr 2026 | Kolosowski, Mateusz 2444 | Brzezina, Pawel 2247 | 1-0 | B12 Defensa Caro-Kann: Advance Variation, Short Variation | EICC 2026 | 57 | Ver |
| 10 abr 2026 | Kolosowski, Mateusz 2444 | Topencik, Bruno 2265 | ½-½ | A06 Apertura Zukertort | EICC 2026 | 81 | Ver |
| 9 abr 2026 | Ringuet, Noe 2220 | Kolosowski, Mateusz 2444 | ½-½ | A45 Defensa India: Accelerated London System | EICC 2026 | 44 | Ver |
| 8 abr 2026 | Kolosowski, Mateusz 2444 | Bochniak, Franciszek 2107 | 1-0 | A50 Queen's Indian Accelerated | EIIC 2026 | 38 | Ver |
| 7 abr 2026 | Blanquet, Camille 2107 | Kolosowski, Mateusz 2444 | 1-0 | D82 Defensa Grünfeld: Brinckmann Attack | EIIC 2026 | 51 | Ver |
| 16 nov 2025 | Kolosowski, Mateusz 2332 | Reimanis, Ritvars 2280 | 1-0 | C46 Apertura de los Tres Caballos | Finals Game 1: Kolosowski, Mateusz - Reimanis, Ritvars | 49 | Ver |
| 16 nov 2025 | Kolosowski, Mateusz 2332 | Onyshchuk, Volodymyr 2635 | 0-1 | B06 Defensa Moderna: Standard Defense | Semifinals Game 2: Kolosowski, Mateusz - Onyshchuk, Volodymyr | 47 | Ver |
| 16 nov 2025 | Onyshchuk, Volodymyr 2635 | Kolosowski, Mateusz 2332 | ½-½ | A07 Ataque Indio de Rey: Double Fianchetto | Semifinals Game 1: Onyshchuk, Volodymyr - Kolosowski, Mateusz | 46 | Ver |
| 14 nov 2025 | Kolosowski, Mateusz 2332 | Terekhov, Andrey 2214 | 1-0 | B23 Defensa Siciliana: Closed | FIDE World Corporate Chess Championship 2025 | Qualifying Pool A | 31 | Ver |
| 13 nov 2025 | Kolosowski, Mateusz 2332 | Edelman, Daniel 2360 | 1-0 | C06 Defensa Francesa: Tarrasch Variation, Closed Variation, Main Line | FIDE World Corporate Chess Championship 2025 | Qualifying Pool A | 44 | Ver |
| 13 nov 2025 | Kolosowski, Mateusz 2332 | Acs, Peter 2486 | ½-½ | B23 Defensa Siciliana: Closed, Traditional | FIDE World Corporate Chess Championship 2025 | Qualifying Pool A | 32 | Ver |
| 13 nov 2025 | Terekhov, Andrey 2214 | Kolosowski, Mateusz 2332 | ½-½ | D78 Defensa Neogrünfeld: Classical Variation, Original Defense | FIDE World Corporate Chess Championship 2025 | Qualifying Pool A | 47 | Ver |
| 13 nov 2025 | Edelman, Daniel 2360 | Kolosowski, Mateusz 2332 | 0-1 | C44 Apertura Escocesa: Scotch Gambit, Advance Variation | FIDE World Corporate Chess Championship 2025 | Qualifying Pool A | 30 | Ver |
| 13 nov 2025 | Acs, Peter 2486 | Kolosowski, Mateusz 2332 | 0-1 | C44 Apertura Escocesa: Scotch Gambit, Advance Variation | FIDE World Corporate Chess Championship 2025 | Qualifying Pool A | 33 | Ver |