| Game | Result | Opening | Date |
|---|---|---|---|
| Kosakowski, Jakub (2540) – Baasansuren, Erdene (2406) | 1/2-1/2 | Caro-Kann Defense: Advance Variation, Bronstein Variation | 2026-08-30 |
| Kosakowski, Jakub (2540) – Sethuraman, S.P. (2541) | 1-0 | Bishop's Opening: Paulsen Defense | 2026-08-30 |
| Kosakowski, Jakub (2540) – Baasansuren, Erdene (2406) | 1-0 | Sicilian Defense: Modern Variations | 2026-08-30 |
| Sethuraman, S.P. (2541) – Kosakowski, Jakub (2540) | 1-0 | Caro-Kann Defense: Advance Variation | 2026-08-30 |
| Kosakowski, Jakub (2540) – Sethuraman, S.P. (2541) | 1-0 | Italian Game: Classical Variation, Giuoco Pianissimo | 2026-08-30 |
| Baasansuren, Erdene (2406) – Kosakowski, Jakub (2540) | 1/2-1/2 | English Opening: Agincourt Defense, Catalan Defense Accepted | 2026-08-30 |
| Kosakowski, Jakub (2540) – Shahil Dey (2438) | 1/2-1/2 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | 2026-08-30 |
| Kosakowski, Jakub (2540) – Cukrowski, Filip (2403) | 1-0 | Sicilian Defense: Richter-Rauzer Variation, Vitolins Variation | 2026-08-29 |
| Moussard, Jules (2602) – Kosakowski, Jakub (2540) | 1-0 | Sicilian Defense: Boleslavsky Variation | 2026-08-28 |
| Labiano Hernandez, Juan (2252) – Kosakowski, Jakub (2540) | 0-1 | Sicilian Defense: Smith-Morra Gambit | 2026-08-27 |
| Kosakowski, Jakub (2540) – Heimisson, Hilmir Freyr (2338) | 1-0 | Sicilian Defense: Kalashnikov Variation | 2026-08-26 |
| Lazaro Pujol, Abel (2385) – Kosakowski, Jakub (2540) | 1/2-1/2 | Sicilian Defense: Najdorf Variation, Opocensky Variation | 2026-08-25 |
| Kosakowski, Jakub (2540) – Sathvik Adiga (2445) | 1/2-1/2 | King's Indian Attack: Spassky Variation | 2026-08-24 |
| Utsab Chatterjee (2353) – Kosakowski, Jakub (2540) | 0-1 | Sicilian Defense: Najdorf Variation | 2026-08-23 |
| Kosakowski, Jakub (2540) – Almedina Ortiz, Edgardo J. (2216) | 1-0 | English Opening: Agincourt Defense | 2026-08-22 |
| Om Batra (2086) – Kosakowski, Jakub (2540) | 0-1 | Modern Defense: Gurgenidze Defense | 2026-08-21 |
| Kosakowski, Jakub (2540) – Turulski, Filip (1616) | 1-0 | Scotch Game | 2026-08-08 |
| Szustakowski, Antoni (2365) – Kosakowski, Jakub (2540) | 0-1 | King's Indian Defense: Orthodox Variation | 2026-08-08 |
| Kosakowski, Jakub (2540) – Przedmojski, Rafal (2357) | 1-0 | French Defense: Tarrasch Variation, Modern System | 2026-08-08 |
| Hurskyi, Yan (1878) – Kosakowski, Jakub (2540) | 0-1 | Sicilian Defense: Moscow Variation, Main Line | 2026-08-08 |
| Kosakowski, Jakub (2540) – Baum, Jonasz (2470) | 1-0 | Philidor Defense: Exchange Variation | 2026-08-08 |
| Licznerski, Lukasz (2500) – Kosakowski, Jakub (2540) | 1/2-1/2 | Sicilian Defense: Najdorf Variation, Opocensky Variation | 2026-08-08 |
| Kosakowski, Jakub (2540) – Kowalski, Igor (2389) | 1/2-1/2 | Scotch Game: Schmidt Variation | 2026-08-08 |
| Serafin, Franciszek (2071) – Kosakowski, Jakub (2540) | 0-1 | Nimzo-Indian Defense: St. Petersburg Variation, American Variation | 2026-08-08 |
| Yermolinsky, Alex (2363) – Kosakowski, Jakub (2543) | 0-1 | King's Indian Defense: Orthodox Variation | 2026-07-05 |
| Kosakowski, Jakub (2543) – Rasulov, Vugar (2538) | 0-1 | Ruy Lopez: Morphy Defense, Duras Variation | 2026-07-04 |
| Raahul V S (2402) – Kosakowski, Jakub (2543) | 1/2-1/2 | Nimzo-Indian Defense: Classical Variation | 2026-07-03 |
| Haznedaroglu, Kivanc (2362) – Kosakowski, Jakub (2543) | 0-1 | Sicilian Defense: Najdorf Variation | 2026-07-02 |
| Kosakowski, Jakub (2543) – Yeganegi, Barad (2376) | 1-0 | Italian Game: Classical Variation, Giuoco Pianissimo | 2026-07-02 |
| Kosakowski, Jakub (2543) – Atis, Hasan (2139) | 1-0 | Sicilian Defense: Taimanov Variation | 2026-07-01 |
| Kosakowski, Jakub (2549) – Dogan, Umut Anil (2195) | 1-0 | Pirc Defense: Classical Variation | 2026-06-30 |
| Yalcinkaya, Efe (2318) – Kosakowski, Jakub (2549) | 1/2-1/2 | Ruy Lopez: Morphy Defense, Classical Defense Deferred | 2026-06-30 |
| Tarlabasi, Emirhan (2308) – Kosakowski, Jakub (2549) | 1/2-1/2 | Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation | 2026-06-29 |
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