I Rio Chess Masters 2025 ITT
24 players participated in this 10-round tournament, held from 06 Sept 2025 to 14 Sept 2025 in Rio de Janeiro RJ, Brazil. 21 titled players from 7 federations. Top 10 Elo average was 2410, and top seed was Alexandr Fier (🇧🇷 BRA, GM, 2569).
Alexandr Fier (🇧🇷 BRA, GM, 2569) won with 7.5/10, ahead of Nathan Felipe Filgueiras (6.5) and Jose Daniel Gemy (6.5). Fier shared the lead from round 7 and won solo starting round 8.
The biggest upset came in round 5: Nathan Felipe Filgueiras (IM, 2377) beat Alexandr Fier (GM, 2569), a +192-point gap.
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How it unfolded
Top 6 · 10 roundsGM Alexandr Fier led from R3; +1.0-point edge over the runner-up.
IM Nathan Felipe Filgueiras takes the sole lead (4.0/5).
GM Alexandr Fier lost to IM Nathan Felipe Filgueiras (White).
GM Alexandr Fier 3 wins (R1–R3)IM Nathan Felipe Filgueiras 4 wins (R3–R6)IM Jose Daniel Gemy 3 wins (R2–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1GMAlexandr Fier | * | 0 | 1 | 1 |
| 2IMNathan Felipe Filgueiras | 1 | * | 0 | ½ |
| 3IMJose Daniel Gemy | 0 | 1 | * | — |
| 4IMMario Villanueva | 0 | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Fier, AlexandrGM | 2569 | BRA | +3B | +14N | +10B | =6N | −2B | +7N | +8B | =5N | +4B | =9N | 7.5 | 52.5 | 57.0 | 42.00 | 2561 | -0.2 |
| 2 | Filgueiras, Nathan FelipeIM | 2377 | BRA | +24B | −6N | +15B | +7B | +1N | +10B | =4N | −3N | =5B | =8N | 6.5 | 52.5 | 54.0 | 33.00 | 2471 | +25.8 |
| 3 | Gemy, Jose DanielIM | 2325 | BOL | −1N | +16B | +8N | +18B | −9N | =5B | =10N | +2B | +6B | =7N | 6.5 | 51.5 | 55.5 | 34.25 | 2479 | +20.8 |
| 4 | Villanueva, MarioIM | 2468 | ARG | +20N | −7B | =5N | =13B | +11N | +12B | =2B | +6N | −1N | +10N | 6.5 | 51.0 | 54.5 | 32.75 | 2433 | -3.2 |
| 5 | Lima, Stefan Moisei VIeiraFM | 2212 | BRA | =23B | +17N | =4B | −10N | +14B | =3N | =16B | =1B | =2N | +6N | 6.0 | 51.0 | 53.5 | 31.50 | 2453 | +62.6 |
| 6 | Lima, DarcyGM | 2396 | BRA | +11N | +2B | =7N | =1B | =10N | +9B | +19N | −4B | −3N | −5B | 5.5 | 54.0 | 58.0 | 30.00 | 2393 | -0.3 |
| 7 | Flores Quillas, Diego Saul RodriIM | 2387 | PER | +22B | +4N | =6B | −2N | F | −1B | +9N | =10B | +19N | =3B | 5.5 | 49.5 | 52.0 | 27.00 | 2454 | +8.2 |
| 8 | Di Berardino, Diego RafaelIM | 2456 | BRA | +19B | −10N | −3B | =12N | +17B | +13N | −1N | =11B | +18N | =2B | 5.5 | 49.0 | 53.0 | 25.75 | 2359 | -12.4 |
| 9 | Ribeiro, Matheus Mendes DominguesFM | 2327 | BRA | =12B | =15N | +22B | =23N | +3B | −6N | −7B | +16N | =10B | =1B | 5.5 | 46.5 | 49.0 | 25.75 | 2367 | +10.6 |
| 10 | Cori T., DeysiIM | 2346 | PER | +21N | +8B | −1N | +5B | =6B | −2N | =3B | =7N | =9N | −4B | 5.0 | 55.0 | 58.0 | 26.00 | 2371 | +3.3 |
| 11 | Menna Barreto, Felipe KubiakiFM | 2275 | BRA | −6B | +24N | =19B | =14N | −4B | +15N | =13B | =8N | =12N | =16B | 5.0 | 45.0 | 46.5 | 20.25 | 2308 | +8.2 |
| 12 | Silva, Caio Henrique Angelico | 2195 | BRA | =9N | −18B | +21N | =8B | +20N | −4N | =14B | =17N | =11B | =15N | 5.0 | 43.5 | 46.5 | 21.25 | 2329 | +69.2 |
| 13 | Da Silva Borges, Rodrigo | 2175 | BRA | +17B | −23N | =14B | =4N | =18N | −8B | =11N | =15B | +21N | =19B | 5.0 | 41.5 | 44.0 | 21.75 | 2330 | +39.6 |
| 14 | Stamenkovic, DraganIM | 2387 | SRB | +16N | −1B | =13N | =11B | −5N | +18B | =12N | −19B | =15N | =22B | 4.5 | 45.5 | 48.0 | 19.50 | 2244 | -19.2 |
| 15 | Contreras Huaman, FiorellaFM | 2200 | PER | =18N | =9B | −2N | −20B | +24N | −11B | +22N | =13N | =14B | =12B | 4.5 | 41.5 | 43.0 | 16.00 | 2256 | +14.6 |
| 16 | Casalaspro, Mathias AndreFM | 2264 | BRA | −14B | −3N | −17B | +24N | +21N | +20B | =5N | −9B | =22B | =11N | 4.5 | 41.0 | 42.5 | 14.75 | 2251 | -3.4 |
| 17 | Hoffman, AlejandroGM | 2325 | ARG | −13N | −5B | +16N | =19B | −8N | +21B | =18N | =12B | =24N | =20B | 4.5 | 40.5 | 42.0 | 16.50 | 2233 | -12.6 |
| 18 | Toth, Christian EndreIM | 2354 | BRA | =15B | +12N | =23B | −3N | =13B | −14N | =17B | =20N | −8B | =24N | 4.0 | 41.5 | 43.0 | 15.75 | 2225 | -17.6 |
| 19 | Pinero Rodriguez, Carlos JoseIM | 2285 | VEN | −8N | =21B | =11N | =17N | +22B | F | −6B | +14N | −7B | =13N | 4.0 | 41.0 | 43.5 | 15.75 | 2276 | -1.6 |
| 20 | Rangel, DanielFM | 2299 | BRA | −4B | −22N | +24B | +15N | −12B | −16N | =21B | =18B | F | =17N | 3.5 | 36.0 | 36.0 | 11.75 | 2201 | -24.6 |
| 21 | Luz, Arthur Nader | 2197 | BRA | −10B | =19N | −12B | +22N | −16B | −17N | =20N | +24B | −13B | F | 3.0 | 35.5 | 35.5 | 7.75 | 2143 | -12.6 |
| 22 | Limp, Eduardo ThelioIM | 2273 | BRA | −7N | +20B | −9N | −21B | −19N | =24B | −15B | F | =16N | =14N | 2.5 | 36.5 | 36.5 | 8.75 | 2123 | -17.8 |
| 23 | Saldano Dayer, HoracioIM | 2357 | ESP | =5N | +13B | =18N | =9B | F | F | F | F | F | F | 2.5 | 30.0 | 30.0 | 12.75 | 2362 | +0.3 |
| 24 | De Albuquerque, Ian Telek C.CM | 2254 | BRA | −2N | −11B | −20N | −16B | −15B | =22N | F | −21N | =17B | =18B | 1.5 | 38.0 | 38.0 | 5.50 | 2012 | -104.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Silva, Caio Henrique AngelicoBRA+69.25.0 pts · #11
- 2Lima, Stefan Moisei VIeiraFMBRA+62.66.0 pts · #5
- 3Da Silva Borges, RodrigoBRA+39.65.0 pts · #13
- 1De Albuquerque, Ian Telek C.CMBRA-104.81.5 pts · #24
- 2Rangel, DanielFMBRA-24.63.5 pts · #20
- 3Stamenkovic, DraganIMSRB-19.24.5 pts · #17
- R5+192 Elo gap
- R10+184 Elo gap
- R5+175 Elo gap