| 16 ago 2026 | Karolczuk, Iwo 2373 | Hanache, Kai 2221 | 1-0 | A46 Defensa India: Knights Variation | 8th IM tournament \"Hotel Stockholm North by First hotels young talents\" | 35 | Ver |
| 15 ago 2026 | Seiger, Vidar 2279 | Karolczuk, Iwo 2373 | ½-½ | A05 Ataque Indio de Rey: Spassky Variation | 8th IM tournament \"Hotel Stockholm North | 13 | Ver |
| 14 ago 2026 | Karolczuk, Iwo 2373 | Hou, Yifan(HIj) 2372 | ½-½ | E51 Defensa Nimzoindia: Normal Variation, Ragozin Variation | 8th IM tournament \"Hotel Stockholm North | 23 | Ver |
| 14 ago 2026 | Chen, Hongsen 2312 | Karolczuk, Iwo 2373 | ½-½ | E11 Defensa Bogoindia: Grünfeld Variation | 8th IM tournament \"Hotel Stockholm North | 31 | Ver |
| 13 ago 2026 | Karolczuk, Iwo 2373 | Munkhzul, Davaakhuu 2108 | 1-0 | E51 Defensa Nimzoindia: Normal Variation, Ragozin Variation | 8th IM tournament \"Hotel Stockholm North | 45 | Ver |
| 12 ago 2026 | Sherali Pattnaik 2192 | Karolczuk, Iwo 2373 | 0-1 | B07 Lion Defense: Anti-Philidor, Lion's Cave | 8th IM tournament \"Hotel Stockholm North | 44 | Ver |
| 12 ago 2026 | Karolczuk, Iwo 2373 | Lyrberg, Patrik 2436 | 1-0 | B03 Defensa Alekhine | 8th IM tournament \"Hotel Stockholm North | 67 | Ver |
| 11 ago 2026 | Debmisra, Ariv 2095 | Karolczuk, Iwo 2373 | 0-1 | C75 Apertura Española (Ruy López): Morphy Defense, Modern Steinitz Defense | 8th IM tournament \"Hotel Stockholm North by First hotels young talents\" | 41 | Ver |
| 4 ago 2026 | Schellenberg, Simon 2213 | Karolczuk, Iwo 2373 | 0-1 | A04 Apertura Zukertort: Sicilian Invitation | 8th IM tournament \"Hotel Stockholm North | 27 | Ver |
| 27 jun 2026 | Bartel, Michal 2271 | Karolczuk, Iwo 2328 | 1-0 | B00 Defensa Pirc | Macieja Memorial | 41 | Ver |
| 27 jun 2026 | Karolczuk, Iwo 2328 | Fiszer, Bartosz 2126 | 1-0 | A08 Apertura Zukertort: Reversed Grünfeld | Macieja Memorial | 29 | Ver |
| 27 jun 2026 | Socko, Bartosz 2481 | Karolczuk, Iwo 2328 | 1-0 | B07 Lion Defense | Macieja Memorial | 71 | Ver |
| 27 jun 2026 | Karolczuk, Iwo 2328 | Pechac, Jergus 2556 | 0-1 | A05 Ataque Indio de Rey: Symmetrical Defense | Macieja Memorial | 34 | Ver |
| 27 jun 2026 | Mayorau, Mikita 2391 | Karolczuk, Iwo 2328 | ½-½ | E32 Defensa Nimzoindia: Classical Variation | Macieja Memorial | 30 | Ver |
| 27 jun 2026 | Karolczuk, Iwo 2328 | Pultinevicius, Paulius 2522 | ½-½ | A07 Ataque Indio de Rey | Macieja Memorial | 66 | Ver |
| 27 jun 2026 | Klimkowski, Jan 2463 | Karolczuk, Iwo 2328 | 0-1 | A06 Ataque Nimzo-Larsen: Classical Variation | Macieja Memorial | 59 | Ver |
| 27 jun 2026 | Kazakouski, Valery 2546 | Karolczuk, Iwo 2328 | 0-1 | A01 Ataque Nimzo-Larsen: Classical Variation | Macieja Memorial | 78 | Ver |
| 27 jun 2026 | Gbiorczyk, Mikolaj 2018 | Karolczuk, Iwo 2328 | 0-1 | A08 Ataque Indio de Rey: Sicilian Variation | Macieja Memorial | 49 | Ver |
| 4 abr 2026 | Karolczuk, Iwo 2373 | Backiel, Hubert 2226 | 1-0 | A07 King's Indian Attack, with Bf5 | PONTE DE LIMA CHESS TOURNAMENT 2026 | 41 | Ver |
| 3 abr 2026 | Lozano Ramirez, Nestor Favian 2235 | Karolczuk, Iwo 2373 | 0-1 | A20 Apertura Inglesa: King's English Variation | PONTE DE LIMA CHESS TOURNAMENT 2026 | 31 | Ver |