| Zomer 2526 |
| Groep A - Jan Piersma |
| Site | Start date | 3-2-2026 | |
| City | End date | 23-6-2026 | |
| Country | Pairing system | Round Robin | |
| Organization | Arbiters |
| Jan Piersma | |
| ID | |
| Rating | 1767 |
| Categories | |
| Nr. | White | Black | Result |
| 1 | Jan Piersma | André Buter | 0−1 |
| 2 | Timon Ensink | Jan Piersma | 1−0 |
| 3 | Jan Piersma | Hans de Jong | ..... |
| 4 | John Beerends | Jan Piersma | 0−1 |
| 5 | Jan Piersma | Rinus Roskam | ..... |
| 6 | Jan Piersma | Pairing alloc bye | |
| 7 | Jan Piersma | Mathijs Vlam | ..... |
| 8 | Jan van Dam | Jan Piersma | ½−½ |
| 9 | Paul Roomer | Jan Piersma | ..... |
| 10 | Jan Piersma | Jan Barteling | 1−0 |
| 11 | Gert Kalkhoven | Jan Piersma | 1−0 |