| 31 ago 2026 | Piesik, Piotr 2418 | Gibala, Adam 2398 | ½-½ | A49 Indian Defense: Przepiorka Variation | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 10 | Ver |
| 30 ago 2026 | Pacher, Milan 2300 | Piesik, Piotr 2418 | ½-½ | C01 French Defense: Exchange Variation | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 24 | Ver |
| 30 ago 2026 | Piesik, Piotr 2418 | Matskevich, Varvara 2109 | ½-½ | E20 Nimzo-Indian Defense | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 24 | Ver |
| 29 ago 2026 | Gahan M G 2231 | Piesik, Piotr 2418 | 0-1 | C00 French Defense: Horwitz Attack, Papa-Ticulat Gambit | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 13 | Ver |
| 29 ago 2026 | Piesik, Piotr 2418 | Wites, Adam 2137 | 1-0 | A08 King's Indian Attack: Sicilian Variation | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 32 | Ver |
| 28 ago 2026 | Ejsymont, Blanka 2054 | Piesik, Piotr 2418 | 0-1 | C15 French Defense: Winawer Variation, Alekhine Gambit, Kan Variation | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 36 | Ver |
| 28 ago 2026 | Piesik, Piotr 2418 | Nainys, Zanas 2313 | 1-0 | A14 English Opening: Agincourt Defense, Neo-Catalan Declined | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 81 | Ver |
| 27 ago 2026 | Chylewski, Patryk 2313 | Piesik, Piotr 2418 | ½-½ | B17 Caro-Kann Defense: Karpov Variation | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 9 | Ver |
| 19 ago 2026 | Fiszer, Bartosz 2328 | Piesik, Piotr 2418 | 0-1 | C16 French Defense: Winawer Variation, Advance Variation | MEGA BIG NORMS WARSAW SUMMER ?26 IM ROUND-ROBIN - A | 61 | Ver |
| 8 ago 2026 | Piesik, Piotr 2418 | Kowalski, Igor 2389 | 0-1 | E97 King's Indian Defense: Orthodox Variation, Aronin-Taimanov Defense | Otwarte_Mistrzostwa_Warszawy | 60 | Ver |
| 8 ago 2026 | Bartel, Mateusz 2549 | Piesik, Piotr 2418 | ½-½ | B12 Caro-Kann Defense: Advance Variation | Otwarte_Mistrzostwa_Warszawy | 40 | Ver |
| 2 ago 2026 | Piesik, Piotr 2412 | Zalega, Maciej 2217 | ½-½ | A05 King's Indian Attack: Symmetrical Defense | Mokate | 136 | Ver |
| 2 ago 2026 | Socko, Bartosz 2554 | Piesik, Piotr 2412 | 1-0 | B13 Caro-Kann Defense: Exchange Variation | Mokate | 51 | Ver |
| 2 ago 2026 | Piesik, Piotr 2412 | Golubka, Petro 2355 | 1-0 | D77 Neo-Grünfeld Defense: Classical Variation, Modern Defense | Mokate | 70 | Ver |
| 2 ago 2026 | Kraczek, Cezary 2228 | Piesik, Piotr 2412 | 0-1 | B06 Modern Defense | Mokate | 51 | Ver |
| 2 ago 2026 | Grochol, Kamil 2197 | Piesik, Piotr 2412 | 0-1 | B06 Modern Defense: Standard Line | Mokate | 45 | Ver |
| 1 ago 2026 | Piesik, Piotr 2412 | Duda, Jan-Krzysztof 2743 | 0-1 | E20 Nimzo-Indian Defense | Mokate | 30 | Ver |
| 1 ago 2026 | Piesik, Piotr 2335 | Aliaudzin, Mikolaj 2308 | 1-0 | A04 Zukertort Opening: Sicilian Invitation | anderssenRAPID | 35 | Ver |
| 1 ago 2026 | Hasterok, Mateusz 2199 | Piesik, Piotr 2335 | 0-1 | A15 English Opening: Anglo-Indian Defense, King's Knight Variation | anderssenRAPID | 83 | Ver |
| 1 ago 2026 | Piesik, Piotr 2335 | Klepek, Witold 2143 | 1-0 | A30 English Opening: Symmetrical Variation, Hedgehog Defense | anderssenRAPID | 65 | Ver |