| Competitie 2025-2026 |
| Group 1 - Marc Helder |
| Site | De Schakel | Start date | 05-09-2025 |
| City | Spanbroek | End date | 22-05-2026 |
| Country | Netherlands | Pairing system | Swiss |
| Organization | Schaakclub Aartswoud | Arbiters |
| Marc Helder | |
| ID | |
| Rating | 2089 |
| Categories: | |
| Index | White | Black | Result |
| 1 | Marc Helder | Richard Deken | 1−0 |
| 2 | Jan Stapel | Marc Helder | 0−1 |
| 3 | Marc Helder | Wouter Laan | 1−0 |
| 4 | David Verweij | Marc Helder | 1−0 |
| 5 | Marc Helder | Robin Smit | 1−0 |
| 6 | Pascal Zijlstra | Marc Helder | ½−½ |
| 7 | Marc Helder | Rob v.d. Heuvel | 1−0 |
| 8 | Marcel Kuiper | Marc Helder | 1−0 |
| 9 | Marc Helder | Lukas Boots | 1−0 |