| Game | Result | Opening | Date |
|---|---|---|---|
| Kucherov, Lev (1952) – Kowalski, Witold (2135) | 1-0 | Italian Game: Two Knights Defense, Modern Bishop's Opening | 2026-09-05 |
| Kowalski, Witold (2135) – Siedlinski, Piotr (2030) | 1/2-1/2 | French Defense: Rubinstein Variation, Blackburne Defense | 2026-09-04 |
| Watorek, Marcin (1970) – Kowalski, Witold (2135) | 1/2-1/2 | Nimzo-Indian Defense: Kmoch Variation | 2026-09-03 |
| Kowalski, Witold (2135) – Toczek, Grzegorz (2141) | 1/2-1/2 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | 2026-09-02 |
| Szarwacki, Dominik (2064) – Kowalski, Witold (2135) | 0-1 | King's Indian Attack: French Variation | 2026-09-01 |
| Kowalski, Witold (2080) – Wasiluk, Dominik (2039) | 1-0 | Sicilian Defense: O'Kelly Variation, Venice System, Steiner Line | 2026-08-31 |
| Marciniak, Leonard (1979) – Kowalski, Witold (2080) | 1/2-1/2 | English Opening: Agincourt Defense, Neo-Catalan Declined | 2026-08-30 |
| Kowalski, Witold (2080) – Paczka, Patryk (1886) | 1/2-1/2 | Sicilian Defense: Najdorf Variation, Adams Attack | 2026-08-29 |
| Warchol, Kamil (2277) – Kowalski, Witold (2010) | 1-0 | Scandinavian Defense: Main Line | 2026-07-13 |
| Rekuc, Patryk (2290) – Kowalski, Witold (2010) | 1-0 | Queen's Pawn Game: Zukertort Variation | 2026-07-13 |
| Kowalski, Witold (2010) – Legierski, Jan (2098) | 1-0 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | 2026-07-13 |
| Kowalski, Witold (2010) – Bochniak, Franciszek (2163) | 1-0 | Scotch Game: Schmidt Variation | 2026-07-13 |
| Musial, Igor (2175) – Kowalski, Witold (2010) | 1-0 | Ruy Lopez: Schliemann Defense | 2026-07-13 |
| Nagly, Wojciech (2138) – Kowalski, Witold (2044) | 1-0 | Catalan Opening: Closed | 2026-07-12 |
| Kowalski, Witold (2044) – Raczek, Krzysztof (2428) | 1/2-1/2 | St. George Defense | 2026-07-12 |
| Kowalski, Witold (2044) – Borischik, Sergey (2271) | 0-1 | Sicilian Defense: Four Knights Variation, Exchange Variation | 2026-07-11 |
| Sowinski, Pawel (2432) – Kowalski, Witold (2044) | 1-0 | Italian Game: Two Knights Defense, Modern Bishop's Opening | 2026-07-11 |
| Jasiulewicz, Dawid (2225) – Kowalski, Witold (2044) | 1-0 | Queen's Gambit Declined: Barmen Variation | 2026-07-08 |
| Warchol, Kamil (2297) – Kowalski, Witold (2044) | 1-0 | Italian Game: Two Knights Defense, Modern Bishop's Opening | 2026-07-07 |
| Kowalski, Witold (2044) – Lyakh, Vasiliy (2328) | 1/2-1/2 | Sicilian Defense: Najdorf Variation | 2026-07-07 |
| Kowalski, Witold (2056) – Siennicki, Ludwik (2007) | 1-0 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | 2026-07-05 |
| Mroczkowski, Adam (2010) – Kowalski, Witold (2056) | 1/2-1/2 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | 2026-07-04 |
| Kowalski, Witold (2056) – Kaliszewski, Tomasz (2013) | 1-0 | Scotch Game: Potter Variation | 2026-07-03 |
| Podgorski, Maciej (2060) – Kowalski, Witold (2056) | 1/2-1/2 | Catalan Opening: Closed | 2026-07-02 |
| Kowalski, Witold (2056) – Kaliszuk, Kamil (2162) | 0-1 | Scotch Game: Potter Variation | 2026-07-01 |
| Pancewicz, Szymon (2126) – Kowalski, Witold (2056) | 1/2-1/2 | Caro-Kann Defense: Exchange Variation | 2026-06-30 |
| Kowalski, Witold (2056) – Wasiluk, Mateusz (2009) | 1/2-1/2 | Sicilian Defense: Najdorf Variation | 2026-06-29 |
| Backiel, Hubert (2237) – Kowalski, Witold (2056) | 1-0 | Zukertort Opening | 2026-06-28 |
| Kowalski, Witold (2056) – Rzap, Filip (2271) | 1/2-1/2 | Caro-Kann Defense: Advance Variation, Short Variation | 2026-06-27 |
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