| Intern 2023/2024 |
| Group 1 - Jan Ackerman |
| Site | Dijckzigt | Start date | 7-11-2021 |
| City | Utrecht | End date | 7-11-2021 |
| Country | Netherlands | Pairing system | Ladder |
| Organization | Schaakvereniging Oud Zuylen Utrecht | Arbiters | Marc Jongerius |
| Jan Ackerman | |
| ID | |
| Rating | 1601 |
| Categories | |
| Nr | White | Black | Result |
| 1 | Jan Ackerman | Abs with msg | |
| 2 | Jan Ackerman | Abs for club | |
| 3 | Daan Fernandes | Jan Ackerman | 1−0 |
| 4 | Jan Ackerman | Abs for club | |
| 5 | Jan Ackerman | Abs with msg | |
| 6 | Isafara Gergin | Jan Ackerman | ½−½ |
| 7 | Jan Ackerman | Abs with msg | |
| 8 | Jan Ackerman | Abs for club | |
| 9 | Jan Ackerman | Abs with msg | |
| 10 | Jan Ackerman | Charles de Leau | 1−0 |
| 11 | Rene ten Bos | Jan Ackerman | 1−0 |
| 12 | Jan Ackerman | Marc Speijers | 0−1 |
| 13 | Thijs Oostveen | Jan Ackerman | 1−0 |
| 14 | Jan Ackerman | Yorick de Kruik | 0−1 |
| 15 | Bert Lardenoye | Jan Ackerman | 1−0 |
| 16 | Jan Ackerman | Abs for club | |
| 17 | Jan Ackerman | Abs with msg | |
| 18 | Jan Ackerman | 1F | |
| 19 | Jan Ackerman | Harm−Theo Wagenaar | 0−1 |
| 20 | Jan Ackerman | Abs with msg | |
| 21 | Jan Ackerman | Abs with msg | |
| 22 | Jan Ackerman | Abs with msg | |
| 23 | Jan Ackerman | Rik Huibers | 1−0 |
| 24 | Jan Ackerman | Thijs Oostveen | 0−1 |
| 25 | Jan Ackerman | Abs for club | |
| 26 | Guus van Eeden | Jan Ackerman | 0−1 |
| 27 | Jan Ackerman | Wiebe Brouwer | 1−0 |
| 28 | Jan Ackerman | Abs with msg | |
| 29 | Jan Ackerman | Jaap van der Tuuk | 0−1 |
| 30 | Wout van Veen | Jan Ackerman | 1−0 |
| 31 | Piet Kooiman | Jan Ackerman | 1−0 |