| Interne Competitie SENIOREN |
| Senioren - Jan Ackerman |
| Site | Boorstraat | Start date | 25-10-2022 |
| City | Utrecht | End date | 31-5-2023 |
| Country | Netherlands | Pairing system | Swiss |
| Organization | Schaakvereniging Oud Zuylen Utrecht | Arbiters | Marc Jongerius |
| Jan Ackerman | |
| Rating | 1626 |
| Nr. | White | Black | Result |
| 1 | Jan Ackerman | Jan Maarten vd Boogaart | ½−½ |
| 2 | Paul van der Pas | Jan Ackerman | 1−0 |
| 3 | Jan Ackerman | Guus van Eeden | 0−1 |
| 4 | Wiebe Brouwer | Jan Ackerman | 1−0 |
| 5 | Jan Ackerman | Pairing alloc bye | |
| 6 | Pascal Boittin | Jan Ackerman | ½−½ |
| 7 | Jan Ackerman | Piet Kooiman | 1−0 |
| 8 | Marc Jongerius | Jan Ackerman | 0−1 |
| 9 | Jan Ackerman | Abs with msg | |
| 10 | Jan Ackerman | Abs with msg | |
| 11 | Jan Ackerman | Abs with msg | |
| 12 | Jan Ackerman | Abs with msg | |
| 13 | Jan Ackerman | Ed van Eeden | 0−1 |
| 14 | Jan Ackerman | Harm Theo Wagenaar | 1−0 |
| 15 | Rene ten Bos | Jan Ackerman | 1−0 |
| 16 | Jan Ackerman | Abs with msg | |
| 17 | Piet Kooiman | Jan Ackerman | 1−0 |
| 18 | Jan Ackerman | Jaap van der Tuuk | 0−1 |
| 19 | Thijs Oostveen | Jan Ackerman | ½−½ |
| 20 | Guus van Eeden | Jan Ackerman | 1−0 |