CChessStats

I Rio Chess Masters 2025 ITT

SwissStandard

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.

Location
🇧🇷Rio de Janeiro RJ, Brazil
Dates
06 Sept 2025 → 14 Sept 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 10 rounds
Top seed
🇧🇷GMAlexandr Fier2569
Avg top 10
2,410
Participants
24
Titled players · 21
GM×3
IM×11
FM×6
CM×1
Federations · 7 represented
🇧🇷Brazil×15
🇵🇪Peru×3
🇦🇷Argentina×2
🇷🇸Serbia×1
🇻🇪Venezuela×1
🇪🇸Spain×1
🇧🇴Bolivia×1
Top 3

How it unfolded

Top 6 · 10 rounds

GM Alexandr Fier led from R3; +1.0-point edge over the runner-up.

Co-leaders
9
4
1
1
1
1
3
1
1
1
2.557.510R1R2R3R4R5R6R7R8R9R10Filgueiras takes leadFier takes lead
R5 · LEADER CHANGE09 Sept

IM Nathan Felipe Filgueiras takes the sole lead (4.0/5).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

GM Alexandr Fier lost to IM Nathan Felipe Filgueiras (White).

WIN STREAKS · 3 top finishers

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

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9R10PtsBu C1BuSBPerfΔ
1Fier, AlexandrGM2569BRA+3B+14N+10B=6N2B+7N+8B=5N+4B=9N7.552.557.042.002561-0.2
2Filgueiras, Nathan FelipeIM2377BRA+24B6N+15B+7B+1N+10B=4N3N=5B=8N6.552.554.033.002471+25.8
3Gemy, Jose DanielIM2325BOL1N+16B+8N+18B9N=5B=10N+2B+6B=7N6.551.555.534.252479+20.8
4Villanueva, MarioIM2468ARG+20N7B=5N=13B+11N+12B=2B+6N1N+10N6.551.054.532.752433-3.2
5Lima, Stefan Moisei VIeiraFM2212BRA=23B+17N=4B10N+14B=3N=16B=1B=2N+6N6.051.053.531.502453+62.6
6Lima, DarcyGM2396BRA+11N+2B=7N=1B=10N+9B+19N4B3N5B5.554.058.030.002393-0.3
7Flores Quillas, Diego Saul RodriIM2387PER+22B+4N=6B2NF1B+9N=10B+19N=3B5.549.552.027.002454+8.2
8Di Berardino, Diego RafaelIM2456BRA+19B10N3B=12N+17B+13N1N=11B+18N=2B5.549.053.025.752359-12.4
9Ribeiro, Matheus Mendes DominguesFM2327BRA=12B=15N+22B=23N+3B6N7B+16N=10B=1B5.546.549.025.752367+10.6
10Cori T., DeysiIM2346PER+21N+8B1N+5B=6B2N=3B=7N=9N4B5.055.058.026.002371+3.3
11Menna Barreto, Felipe KubiakiFM2275BRA6B+24N=19B=14N4B+15N=13B=8N=12N=16B5.045.046.520.252308+8.2
12Silva, Caio Henrique Angelico2195BRA=9N18B+21N=8B+20N4N=14B=17N=11B=15N5.043.546.521.252329+69.2
13Da Silva Borges, Rodrigo2175BRA+17B23N=14B=4N=18N8B=11N=15B+21N=19B5.041.544.021.752330+39.6
14Stamenkovic, DraganIM2387SRB+16N1B=13N=11B5N+18B=12N19B=15N=22B4.545.548.019.502244-19.2
15Contreras Huaman, FiorellaFM2200PER=18N=9B2N20B+24N11B+22N=13N=14B=12B4.541.543.016.002256+14.6
16Casalaspro, Mathias AndreFM2264BRA14B3N17B+24N+21N+20B=5N9B=22B=11N4.541.042.514.752251-3.4
17Hoffman, AlejandroGM2325ARG13N5B+16N=19B8N+21B=18N=12B=24N=20B4.540.542.016.502233-12.6
18Toth, Christian EndreIM2354BRA=15B+12N=23B3N=13B14N=17B=20N8B=24N4.041.543.015.752225-17.6
19Pinero Rodriguez, Carlos JoseIM2285VEN8N=21B=11N=17N+22BF6B+14N7B=13N4.041.043.515.752276-1.6
20Rangel, DanielFM2299BRA4B22N+24B+15N12B16N=21B=18BF=17N3.536.036.011.752201-24.6
21Luz, Arthur Nader2197BRA10B=19N12B+22N16B17N=20N+24B13BF3.035.535.57.752143-12.6
22Limp, Eduardo ThelioIM2273BRA7N+20B9N21B19N=24B15BF=16N=14N2.536.536.58.752123-17.8
23Saldano Dayer, HoracioIM2357ESP=5N+13B=18N=9BFFFFFF2.530.030.012.752362+0.3
24De Albuquerque, Ian Telek C.CM2254BRA2N11B20N16B15B=22NF21N=17B=18B1.538.038.05.502012-104.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets