The I Rio Chess Masters 2025 (ITT) will take place from September 06 to September 14 in Rio de Janeiro, Brazil. It is a 10-round Swiss system tournament with time control of 90 min + 30 sec/move. For more events from Brazil, check out The South American Chess Calendar, which is part of The Chess Calendar.
The top-seeded players are GM Alexandr Fier (2569), IM Mario Villanueva (2468), IM Diego Rafael Di Berardino (2456), GM Darcy Lima (2396), IM Diego Saul Rodriguez Flores Quillas (2387), IM Dragan Stamenkovic (2387), IM Nathan Felipe Filgueiras (2377), IM Horacio Saldano Dayer (2357), IM Christian Endre Rego Toth (2354), IM Deysi Cori T. (2346). Scroll down for the full participants list.
More: Juegos Distritales ASCUN NODO BOGOTA / Maipu Chess Open 2025 / Montreal Open 2025 / I Open Ansite 2025
I Rio Chess Masters 2025 (ITT) Participants
| No. | Name | RtgI | |
| 1 | GM | Fier Alexandr | 2569 |
| 2 | IM | Villanueva Mario | 2468 |
| 3 | IM | Di Berardino Diego Rafael | 2456 |
| 4 | GM | Lima Darcy | 2396 |
| 5 | IM | Flores Quillas Diego Saul Rodriguez | 2387 |
| 6 | IM | Stamenkovic Dragan | 2387 |
| 7 | IM | Filgueiras Nathan Felipe | 2377 |
| 8 | IM | Saldano Dayer Horacio | 2357 |
| 9 | IM | Toth Christian Endre Rego | 2354 |
| 10 | IM | Cori T. Deysi | 2346 |
| 11 | FM | Ribeiro Matheus Mendes Domingues | 2327 |
| 12 | GM | Hoffman Alejandro | 2325 |
| 13 | IM | Gemy Jose Daniel | 2325 |
| 14 | FM | Rangel Daniel | 2299 |
| 15 | IM | Pinero Rodriguez Carlos Jose | 2285 |
| 16 | FM | Menna Barreto Felipe Kubiaki | 2275 |
| 17 | IM | Limp Eduardo Thelio | 2273 |
| 18 | FM | Casalaspro Mathias Andre | 2264 |
| 19 | De Albuquerque Ian Telek Cavalcanti | 2254 | |
| 20 | FM | Lima Stefan Moisei Vieira | 2212 |
| 21 | FM | Contreras Huaman Fiorella Daiana | 2200 |
| 22 | Luz Arthur Nader | 2197 | |
| 23 | Silva Caio Henrique Angelico | 2195 | |
| 24 | Da Silva Borges Rodrigo | 2175 |
