International
Chess Federation
| Event code | 451963 |
| Tournament Name | Aberto do Brasil 2025 da Cidade de Rio Branco AC |
| City | Rio Branco AC |
| Country | BRA |
| Number of players | 60 |
| System | s |
| Hybrid | NO |
| Category | 0 |
| Start Date | 2025-11-20 |
| End Date | 2025-11-20 |
| Date received | 2025-11-27 |
| Date registered | 2025-11-13 |
| Type | |
| Time Control | Standard: 90 minutes with 30 second increment from move 1 |
| Zone | |
| Chief Arbiter | Kester, Rogerio (BRA) |
| Deputy Chief Arbiter | Ragnini,Albino Joao (BRA) |
| Arbiter | Da Silva,Francisco Jonas Nascimento (BRA) |
| Chief Organizer | Souza , Neurismar Da Rocha (BRA) |
| Organizer | |
| PGN file | Download |
| Orig.Report | View |
| View Report | Rated for December 2025 as Standard |
More information: The full list of tournaments received from Brazil for December 2025