| Intern 2024/2025 |
| Group 1 - Piet Kooiman |
| Site | Dijckzigt | Start date | 10-9-2024 |
| City | Utrecht | End date | 1-7-2025 |
| Country | Netherlands | Pairing system | Ladder |
| Organization | Schaakvereniging Oud Zuylen Utrecht | Arbiters | Marc Jongerius |
| Piet Kooiman | |
| ID | |
| Rating | 1880 |
| Categories | |
| Nr. | White | Black | Result |
| 1 | Piet Kooiman | Geert Verweij | 1−0 |
| 2 | Mika Kleibeuker | Piet Kooiman | 1−0 |
| 3 | Piet Kooiman | Abs with msg | |
| 4 | Piet Kooiman | Abs for club | |
| 5 | Rene ten Bos | Piet Kooiman | 0−1 |
| 6 | Piet Kooiman | Abs with msg | |
| 7 | Piet Kooiman | Harm−Theo Wagenaar | 1−0 |
| 8 | Piet Kooiman | Abs for club | |
| 9 | Piet Kooiman | Ed van Eeden | 0−1 |
| 10 | Bertrand Weegenaar | Piet Kooiman | 1−0 |
| 11 | Piet Kooiman | Pascal Boittin | 0−1 |
| 12 | Piet Kooiman | Abs with msg | |
| 13 | Rene ten Bos | Piet Kooiman | ½−½ |
| 14 | Piet Kooiman | Ahmet Ozbek | ½−½ |
| 15 | Piet Kooiman | Abs with msg | |
| 16 | Piet Kooiman | Abs for club | |
| 17 | Jaap van der Tuuk | Piet Kooiman | 1−0 |
| 18 | Piet Kooiman | Rene ten Bos | 1−0 |
| 19 | Piet Kooiman | Abs with msg | |
| 20 | Piet Kooiman | Abs with msg | |
| 21 | Piet Kooiman | Wout van Goor | ½−½ |
| 22 | Thijs Oostveen | Piet Kooiman | ½−½ |
| 23 | Pascal Boittin | Piet Kooiman | 1−0 |
| 24 | Piet Kooiman | Ed van Eeden | 1−0 |
| 25 | Piet Kooiman | Abs with msg | |
| 26 | Piet Kooiman | Abs with msg | |
| 27 | Piet Kooiman | Abs with msg | |
| 28 | Piet Kooiman | Abs with msg | |
| 29 | Piet Kooiman | Abs with msg |