| Sep 13, 2025 | Smeets | 1–0 | IJzermans | Round 11: Smeets, Kobe - IJzermans, Cees | Scandinavian Defense: Valencian Variation, Ilundain Variation | |
| Sep 13, 2025 | IJzermans | ½–½ | Michiel Van Wissen | Round 10: IJzermans, Cees - Michiel Van Wissen | Zukertort Opening: Kingside Fianchetto | |
| Sep 13, 2025 | Gijsen | 0–1 | IJzermans | Round 9: Gijsen, William - IJzermans, Cees | Scandinavian Defense: Valencian Variation | |
| Sep 13, 2025 | IJzermans | 1–0 | Kurt | Round 8: IJzermans, Cees - Kurt, Sascha | Zukertort Opening: Nimzo-Larsen Variation | |
| Sep 13, 2025 | Dinanath | 0–1 | IJzermans | Round 7: Dinanath, Hrdya - IJzermans, Cees | Scandinavian Defense: Valencian Variation, Ilundain Variation | |
| Sep 13, 2025 | IJzermans | 1–0 | Meulmeester | Round 6: IJzermans, Cees - Meulmeester, Luuk | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Sep 13, 2025 | Ritzerveld | 0–1 | IJzermans | Round 5: Ritzerveld, Noah - IJzermans, Cees | Indian Defense: Anti-Nimzo-Indian | |
| Sep 13, 2025 | IJzermans | 0–1 | Bram Van Der Velden | Round 4: IJzermans, Cees - Bram Van Der Velden | Nimzo-Larsen Attack: Classical Variation | |
| Sep 13, 2025 | IJzermans | 0–1 | Arnold | Round 2: IJzermans, Cees - Arnold, Rhys | Zukertort Opening: Sicilian Invitation | |
| Sep 13, 2025 | Joel Van Der Werf | 1–0 | IJzermans | Round 3: Joel Van Der Werf - IJzermans, Cees | Scandinavian Defense: Valencian Variation | |
| Sep 13, 2025 | Van der Weijden | 0–1 | IJzermans | 1.5: Van der Weijden, Kevin - IJzermans, Cees | Scandinavian Defense: Valencian Variation, Ilundain Variation | |
| Sep 13, 2025 | IJzermans | 1–0 | Van der Leek | 1.4: IJzermans, Cees - Van der Leek, Mark | Zukertort Opening: Double Fianchetto Attack | |
| Sep 13, 2025 | Skrobic | 1–0 | IJzermans | 1.2: Skrobic, Dragan - IJzermans, Cees | Caro-Kann Defense: Exchange Variation | |
| Sep 13, 2025 | IJzermans | 1–0 | Priem | 1.1: IJzermans, Cees - Priem, Ian | Zukertort Opening: Nimzo-Larsen Variation | |
| Sep 12, 2025 | IJzermans | 1–0 | Bhutani | 1.3: IJzermans, Cees - Bhutani, Granth | Scotch Game: Schmidt Variation | |
| Sep 8, 2025 | IJzermans | ½–½ | Mark Van Der Werf | Round 1: IJzermans, Cees - Mark Van Der Werf | Zukertort Opening: Nimzo-Larsen Variation | |
