CChessStats

I Aberto do Brasil de Mossoro 2025

Open SwissStandard

22 players participated in this 6-round tournament, held from 21 Nov 2025 to 23 Nov 2025 in Mossoro RN, Brazil. 3 titled players. Top 10 Elo average was 2029, and top seed was Francisco Allysson da S. Muniz (🇧🇷 BRA, CM, 2231).

Davi Alves Do Nascimento (🇧🇷 BRA, CM, 2057) won with 5.0/6, ahead of Marcio Jordao Barbosa (4.5) and Vitor Firmo de Souza Rocha (4.5). Do Nascimento clinched sole first place in the final round.

The biggest upset came in round 2: Wallisson Freitas De Souza (1961) beat Francisco Allysson da S. Muniz (CM, 2231), a +270-point gap.

Location
🇧🇷Mossoro RN, Brazil
Dates
21 Nov 2025 → 23 Nov 2025
Time control
Standard: 90 minutes for game with 30 seconds delay from move 1
System
Swiss · 6 rounds
Top seed
🇧🇷CMFrancisco Allysson da S. Muniz2231
Avg top 10
2,029
Participants
22
Titled players · 3
FM×1
CM×2
Federations · 1 represented
🇧🇷Brazil×22
Top 3

How it unfolded

Top 6 · 6 rounds

CM Davi Alves Do Nascimento led from R6; +0.5-point edge over the runner-up.

Co-leaders
8
5
3
1
1
1
1.534.56R1R2R3R4R5R6Do Nascimento takes lead
Do Nascimento5Dantas4.5Rocha4.5Jordao Barbosa4.5Muniz4Martins4
R6 · LEADER CHANGE23 Nov

CM Davi Alves Do Nascimento takes the sole lead (5.0/6).

WIN STREAKS · 2 top finishers

CM Davi Alves Do Nascimento 3 wins (R4–R6)Vitor Firmo de Souza Rocha 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1CMDavi Alves Do Nascimento*—
1
0
2Pedro Lucas Araujo Dantas—*—
0
3Vitor Firmo de Souza Rocha
0
—*
½
4Marcio Jordao Barbosa
1
1
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΔ
1Do Nascimento, Davi AlvesCM2057BRA+13B+16N−2N+11B+10N+3B5.018.019.014.502195+19.6
2Jordao Barbosa,Marcio2188BRA+9B+4N+1B=6N=3B=5N4.522.025.519.252228+8.4
3Rocha, Vitor Firmo de Souza2180BRA+7N+18B+5N+10B=2N−1N4.520.521.514.252161-0.4
4Dantas, Pedro Lucas Araujo2047BRA+11N−2B+22N+8B=5N+10B4.518.018.011.502056+10.4
5Martins, Alan Pedro Vasconcelos1873BRA+17B+14N−3B+9N=4B=2B4.019.520.511.502106+58.4
6Muniz, Francisco Allysson da S.CM2231BRA+8N−10B+7N=2B=12N+14B4.018.020.513.752068-19.0
7Oliveira, Carlos Henrique Lopes1794BRA−3B+17N−6B+16N+21B+12N4.013.514.05.502030+21.0
8Amaral, Miguel De Lima1860BRA−6B+15N+16B−4N+13B=9N3.517.518.58.251885-0.4
9Macedo, Alexandre Soares de1819BRA−2N+19B+18N−5B+11N=8B3.516.016.56.251881+7.6
10De Souza, Wallisson Freitas1961BRA+22B+6N+12B−3N−1B−4N3.021.021.07.001993+13.2
11De Lima, Deyvid Felipe Gomes1552BRA−4B+13N+20B−1N−9B+17N3.017.017.54.501686+18.4
12De Oliveira, Fellipe Prado Figueira1880BRA=19N+20B−10N+14N=6B−7B3.014.014.55.251894-0.8
13Silva, Luiz Felipe Felix1791BRA−1N−11B+17N+22B−8N+16B3.013.513.52.001525-52.0
14Macedo, Maximo ValerioFM1935BRA=20N−5B+19N−12B+15N−6N2.514.014.53.251195-26.4
15Duarte, Vinni Mikael De Sousa0BRA−18N−8B=21N+19B−14B+22N2.58.08.00.7516510.0
16Macedo, Maximo Ian Farias De0BRAF−1B−8N−7B+20N−13N1.016.016.00.5010750.0
17Macedo, Elaine L Lacerda De F0BRA−5N−7B−13BF+22N−11B1.014.014.00.0014430.0
18De Andrade E Silva, Carlos Eduardo1933BRA+15B−3N−9BFFF1.010.510.52.501200-34.0
19Martins Neto, Silvestre Monteiro0BRA=12B−9N−14B−15NFF0.512.012.01.5016060.0
20Paiva, Wescley Ariel Sousa De0BRA=14B−12N−11NF−16BF0.510.010.01.2515170.0
21Santos Lima, Carlos Roberto1865BRAFF=15BF−7NF0.57.57.51.25994-24.0
22De Macedo, Sofia Farias1406BRA−10NF−4B−13N−17B−15B0.014.014.50.001000-10.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets