CChessStats

Guarapari Chess Open STD 2025

Open SwissStandard

21 players participated in this 6-round tournament, held from 16 Aug 2025 to 17 Aug 2025 in Guarapari ES, Brazil. 1 titled players. Top 10 Elo average was 1877, and top seed was Rafael Ventura Dos Santos (🇧🇷 BRA, FM, 2102).

Rafael Ventura Dos Santos (🇧🇷 BRA, FM, 2102) won with 5.0/6, ahead of Fernando Bitaraes S Montenegro (4.5) and Hudson Soares do Bonfim (4.5). Santos shared the lead from round 5 and broke clear in the final round.

The biggest upset came in round 2: Daniel Rojas Nascimento (1911) beat Rafael Ventura Dos Santos (FM, 2102), a +191-point gap.

Location
🇧🇷Guarapari ES, Brazil
Dates
16 Aug 2025 → 17 Aug 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Top seed
🇧🇷FMRafael Ventura Dos Santos2102
Avg top 10
1,877
Participants
21
Titled players · 1
FM×1
Federations · 1 represented
🇧🇷Brazil×16
Top 3

How it unfolded

Top 6 · 6 rounds

FM Rafael Ventura Dos Santos led from R6; +0.5-point edge over the runner-up.

Co-leaders
8
2
1
1
3
1
1.534.56R1R2R3R4R5R6Santos takes lead
Santos5Montenegro4.5Bonfim4.5Nascimento4Globa4Silva4
R6 · LEADER CHANGE17 Aug

FM Rafael Ventura Dos Santos takes the sole lead (5.0/6).

R1 · HEAD-TO-HEAD · WINNER VS 2ND

FM Rafael Ventura Dos Santos beat Fernando Bitaraes S Montenegro (White).

WIN STREAKS · 2 top finishers

FM Rafael Ventura Dos Santos 4 wins (R3–R6)Fernando Bitaraes S Montenegro 3 wins (R2–R4)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1FMRafael Ventura Dos Santos*
1
—
0
2Fernando Bitaraes S Montenegro
0
*
½
1
3Hudson Soares do Bonfim—
½
*
0
4Daniel Rojas Nascimento
1
0
1
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΔ
1Santos, Rafael Ventura DosFM2102BRA+2B−4N+12B+10N+7B+5B5.019.021.517.502084-1.4
2Montenegro, Fernando Bitaraes S0BRA−1N+20B+16N+9B=3N+4B4.518.519.512.2519670.0
3Bonfim, Hudson Soares do1934BRA+21N+6B−4B+14N=2B+9N4.517.517.511.251937+0.6
4Nascimento, Daniel Rojas1911BRA+12B+1B+3N+7B−5N−2N4.021.524.015.502161+25.8
5Silva, Ezequiel Demetras1891BRA+20N=7B=14N+6B+4B−1N4.018.519.511.751911+2.2
6Globa, Lucas Darbelly0BRA+10B−3N+13B−5N+14B+11N4.017.019.010.5018230.0
7Silveira, Rogerio Zanon da1943BRA+19B=5N+15B−4N−1N+12B3.517.519.08.001695-18.0
8FIDE 447658270—−17B−12N=11N+21B+15B+18N3.511.011.05.0011600.0
9Goncalves,Luiz Osvaldo Cifuentes1839BRA=15B+13N=17B−2N+20B−3B3.015.516.55.501859+1.6
10Santos, Mike Sperandio1820BRA−6N+21B+18N−1B−11N+16B3.015.515.53.501302-6.4
11Severo, Vanderson Alves Ribeiro0BRA=13B−15N=8B+19N+10B−6B3.015.016.57.5017720.0
12Vieira, Ivo Rizzo0BRA−4N+8B−1N+13B=18N−7N2.518.520.06.7517170.0
13Heck, Rahysa Leal1684BRA=11N−9B−6N−12N+19B+21N2.514.014.03.001039-11.6
14Nunes, Davi Del Piero1685BRA+18B=17N=5B−3B−6NF2.016.017.04.501803+16.0
15FIDE 5380499100—=9N+11B−7N−18B−8N=19B2.014.516.05.2516980.0
16FIDE 5380498990—F+19N−2B−20N+21B−10N2.010.010.01.5010200.0
17Oliveira,Perseu Fernandes Machado de1960BRA+8N=14B=9NFFF2.08.58.56.001763-19.6
18FIDE 5380498800—−14NF−10B+15N=12B−8B1.513.013.03.259530.0
19Costa, Igor Braz Da Silva0BRA−7N−16B+21N−11B−13N=15N1.513.013.01.0010140.0
20Miranda, Davi Ferreira0BRA−5B−2NF+16B−9NF1.015.515.52.0010650.0
21FIDE 447701460—−3B−10N−19B−8N−16N−13B0.015.517.00.0010130.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets