International
Chess Federation
| Event code | 416144 |
| Tournament Name | grenke Chess Open 2025 B-Open |
| City | Karlsruhe |
| Country | GER |
| Number of players | 1195 |
| System | s |
| Hybrid | NO |
| Category | 0 |
| Start Date | 2025-04-17 |
| End Date | 2025-04-21 |
| Date received | 2025-04-27 |
| Date registered | 2025-03-12 |
| Type | |
| Time Control | Standard: 90 minutes with 30 second increment from move 1 |
| Zone | |
| Reported mult. round days | 4 |
| Chief Arbiter | Wolter, Jens (GER) |
| Deputy Chief Arbiter | Ruetten, Michael (GER) Weber, Michael (GER) |
| Arbiter | Haase, Carsten (GER) Muenstermann, Claudia (GER) Schmidt, Sandra (GER) Studer, Jonas (SUI) Van der Graaf, Andre (NED) Van der Graaf-Osinga, Angelique (NED) Winker, Fabian (GER) Morio, Estelle (GER) Paulus, Jeffrey (GER) Geshnizjani, Ramin, Dr. (GER) Uensal, Ege Yigit (GER) |
| Anticheating Arbiter | Van der Graaf-Osinga, Angelique (NED) Winker, Fabian (GER) |
| Chief Organizer | Noppes, Sven (GER) |
| Organizer | |
More information: The full list of tournaments received from Germany for May 2025