| Competitie 2025-2026 |
| Group 1 - Marc Helder |
| Site | De Nieuwe Haven | Start date | 05-09-2025 |
| City | Abbekerk | End date | 22-05-2026 |
| Country | Netherlands | Pairing system | Amsterdams |
| Organization | Schaakclub Aartswoud | Arbiters |
| Marc Helder | |
| ID | |
| Rating | 2089 |
| Categories | |
| Nr. | White | Black | Result |
| 1 | Marc Helder | Don op 't Eijnde | 1−0 |
| 1 | Marc Helder | Pascal Zijlstra | 1−0 |
| 1 | Rob v.d. Heuvel | Marc Helder | 1−0 |
| 2 | Marc Helder | Pascal Zijlstra | 1−0 |
| 2 | Ron v. Putten | Marc Helder | 0−1 |
| 2 | Marc Helder | Erik v. Tooren | 0−1 |
| 3 | David Verweij | Marc Helder | 0−1 |
| 3 | Marc Helder | Lukas Boots | 1−0 |
| 3 | Rob v.d. Heuvel | Marc Helder | 0−1 |
| 4 | Jan Stapel | Marc Helder | 0−1 |
| 4 | Toine Molenaar | Marc Helder | 0−1 |
| 4 | Marc Helder | Pascal Zijlstra | 1−0 |