| 31 ago 2026 | Iwanczuk, Krzysztof 2162 | Olszewski, Michal 2509 | 0-1 | E28 Defensa Nimzoindia: Sämisch Variation | II Liga 2026 | 44 | Ver |
| 30 ago 2026 | Iwanczuk, Krzysztof 2162 | Koziorowicz, Michal 2317 | 0-1 | B45 Defensa Siciliana: Four Knights Variation | II Liga 2026 | 40 | Ver |
| 16 jul 2026 | Gnojek, Petr 2406 | Iwanczuk, Krzysztof 2109 | 0-1 | E51 Defensa Nimzoindia: Normal Variation, Ragozin Variation | Czech Open 2026 | E | 32 | Ver |
| 6 sep 2025 | Marszalek, Maciej 2286 | Iwanczuk, Krzysztof 2067 | ½-½ | A34 Apertura Inglesa: Symmetrical Variation, Rubinstein Variation | 2 liga 2025 2 | 8 | Ver |
| 5 sep 2025 | Iwanczuk, Krzysztof 2067 | Stanisz, Patryk 2156 | 1-0 | A88 Defensa Holandesa: Leningrad Variation, Warsaw Variation | 2 liga 2025 2 | 53 | Ver |
| 4 sep 2025 | Renkowski, Piotr 2298 | Iwanczuk, Krzysztof 2067 | 1-0 | C47 Apertura de los Cuatro Caballos: Gunsberg Variation | 2 liga 2025 2 | 45 | Ver |
| 3 sep 2025 | Brodowski, Piotr 2457 | Iwanczuk, Krzysztof 2067 | 1-0 | A34 Apertura Inglesa: Symmetrical Variation, Rubinstein Variation | 2 liga 2025 2 | 49 | Ver |
| 2 sep 2025 | Iwanczuk, Krzysztof 2067 | Sushchov, Oleksandr 2354 | 0-1 | C02 Defensa Francesa: Advance Variation | 2 liga 2025 2 | 40 | Ver |