V Rio Chess Open 2026 STD

Open SwissStandard

66 players participated in this 9-round tournament, held from 21 Apr 2026 to 26 Apr 2026 in Rio de Janeiro RJ, Brazil. 6 titled players from 4 federations. Top 10 Elo average was 2140, and top seed was Nathan Felipe Filgueiras (🇧🇷 BRA, IM, 2400).

Nathan Felipe Filgueiras (🇧🇷 BRA, IM, 2400) won with 8.0/9, ahead of Kaua Marques Silva (8.0) and Matheus Mendes Domingues Ribeiro (8.0). Filgueiras shared the lead from round 6, winning on tie-break.

The biggest upset came in round 4: Flavio Heubeck (1690) beat Raimundo Nascimento Felix (1936), a +246-point gap.

Location

🇧🇷Rio de Janeiro RJ, Brazil

Dates

21 Apr 2026 → 26 Apr 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇧🇷IMNathan Felipe Filgueiras2400

Avg top 10

2,140

Participants

Titled players · 6

IM×1

FM×3

CM×1

WFM×1

Federations · 4 represented

🇧🇷Brazil×61

🇧🇴Bolivia×2

🇫🇷France×1

🇷🇺Russia×1

Top 3

🥇
IMNathan Felipe Filgueiras
🇧🇷BRA·2400
8.0pts·2438perf+4.2
🥈
FMKaua Marques Silva
🇧🇷BRA·2325
8.0pts·2412perf+17.6
🥉
FMMatheus Mendes Domingues Ribeiro
🇧🇷BRA·2313
8.0pts·2423perf+21.8

How it unfolded

Top 6 · 9 rounds

Tight race until R9; 3 players tied at 8.0/9, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 3 at the finish.

Co-leaders

Silva8Filgueiras8Ribeiro8Roland6Frolov6Alaime6

R9 · TIEBREAK CLUSTER

3 players finish on 8.0/9. Filgueiras takes the title on Buchholz Cut1 (50.0).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

FM Kaua Marques Silva drew with IM Nathan Felipe Filgueiras (White).

WIN STREAKS · 3 top finishers

FM Kaua Marques Silva 4+3 wins (R1–R4, R7–R9)IM Nathan Felipe Filgueiras 4 wins (R1–R4)FM Matheus Mendes Domingues Ribeiro 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMKaua Marques Silva	*	½	½	—
2IMNathan Felipe Filgueiras	½	*	½	1
3FMMatheus Mendes Domingues Ribeiro	½	½	*	—
4Marcos Maldonado Roland	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Filgueiras, Nathan FelipeIM	2400	BRA	+32N	+29B	+7N	+6B	=2N	+4B	=3N	+5B	+10N	8.0	50.0	54.0	46.00	2438	+4.2
2	Silva, Kaua MarquesFM	2325	BRA	+40B	+17N	+10B	+5N	=1B	=3N	+9B	+14N	+15B	8.0	48.0	51.5	43.50	2412	+17.6
3	Ribeiro, Matheus Mendes DominguesFM	2313	BRA	+53N	+20B	+35N	+4B	+11N	=2B	=1B	+23N	+14B	8.0	45.5	47.5	39.50	2423	+21.8
4	Alaime, Maxime	2042	FRA	+54B	+42N	+15B	−3N	+17B	−1N	+33B	=12N	=5B	6.0	44.5	46.0	24.25	2132	+21.8
5	Manzi, Luiz Antonio Bardaro	2034	BRA	+63B	+59N	+36N	−2B	+9N	+6B	=12B	−1N	=4N	6.0	43.5	43.5	21.75	2138	+25.4
6	Roland, Marcos Maldonado	2051	BRA	+34B	+24N	+13B	−1N	+36B	−5N	−15B	+18N	+25N	6.0	42.5	46.5	27.50	2073	+6.0
7	Frolov, Ivan	2020	RUS	+49B	+60N	−1B	=21N	+34B	+10N	−14B	=9N	+33N	6.0	39.0	39.0	21.00	2052	+10.0
8	Leus, Lucas Resende	1852	BRA	−51B	+49N	+56B	−13N	+48B	+24N	+37B	−15N	+16B	6.0	31.5	32.5	20.00	2018	+32.8
9	Yepez Montenegro, Gloria LuzWFM	1938	BOL	+64B	+51N	=12B	+14N	−5B	+16N	−2N	=7B	=13N	5.5	43.0	43.0	20.50	2066	+22.0
10	Santos Filho, Tadeu Sousa	1989	BRA	+48B	+58N	−2N	=39B	+41N	−7B	+32N	+20N	−1B	5.5	40.5	41.0	17.25	2004	+4.6
11	Aipperspach, Joao Lizak	1960	BRA	+47B	+37N	=23B	+12N	−3B	−14N	−16B	+54N	+21B	5.5	39.5	41.0	20.75	2072	+49.2
12	Fernandes, Silas Carvalho	2047	BRA	+28N	+39B	=9N	−11B	+25N	+32B	=5N	=4B	F	5.5	39.5	39.5	25.25	2040	+0.6
13	Espinosa,Guilherme Vieira	1963	BRA	+65N	+43B	−6N	+8B	=32N	F	=22B	+42N	=9B	5.5	32.0	32.0	19.00	1975	+10.4
14	De Albuquerque, Ian Telek C.CM	2078	BRA	F	+31B	+18N	−9B	+33N	+11B	+7N	−2B	−3N	5.0	46.5	46.5	25.00	2078	+1.6
15	Bezerra, Natacio Goncalves	1944	BRA	F	+19B	−4N	−32B	+58N	+39B	+6N	+8B	−2N	5.0	39.0	39.0	21.00	2002	+9.8
16	De Miranda, Eduardo Rodrigues C	1995	BRA	=30N	+41B	−20N	+43B	+46N	−9B	+11N	=25B	−8N	5.0	37.0	40.0	19.50	1822	-67.2
17	Lopes, Eduardo Moraes	1913	BRA	+66N	−2B	+45N	+31B	−4N	F	+44B	=22N	=18B	5.0	34.0	34.0	15.25	1905	-2.2
18	Smith, Victor Gabriel Rangel do N.	1785	BRA	+62B	=21N	−14B	−34N	+49N	+54B	+35N	−6B	=17N	5.0	32.5	32.5	12.75	1869	+31.6
19	Da Costa, Marcelo H Amaral	0	BRA	+33B	−15N	=59B	=24N	−26B	+53N	−29B	+44N	+42B	5.0	30.5	31.0	14.50	1865	0.0
20	Laba, Otavio De Souza	1908	BRA	+56B	−3N	+16B	−33N	=28B	+40N	+43N	−10B	F	4.5	37.0	38.0	14.75	1905	-4.8
21	Salles, Marvio Darilho	2023	BRA	+27N	=18B	+26N	=7B	+42B	F	−23N	=39B	−11N	4.5	36.5	36.5	19.25	1939	-14.8
22	Franca, Joao Vitor Da Silva	1888	BRA	=46N	−26B	+30N	+27B	=23N	=35B	=13N	=17B	F	4.5	35.5	35.5	20.00	1906	+11.6
23	Guimaraes, Wagner PeixotoFM	2075	BRA	=41N	+30B	=11N	F	=22B	+42N	+21B	−3B	F	4.5	33.5	33.5	18.75	2023	-4.6
24	De Resende, Kalyndi Carvalho	1908	BRA	+61N	−6B	=27N	=19B	+45N	−8B	+58B	F	=28N	4.5	33.5	33.5	10.50	1753	-44.8
25	Costa, Harry Andriolo	1893	BRA	F	=52N	=34B	+54N	−12B	+28N	+27B	=16N	−6B	4.5	33.0	33.0	16.00	1867	-4.8
26	Abasto Chavez, Dorian Quintin	1907	BOL	=52B	+22N	−21B	F	+19N	−37N	+36B	−29N	+43B	4.5	31.5	31.5	17.50	1924	+2.8
27	Lima, Teo Ronai	1601	BRA	−21B	+62N	=24B	−22N	+56B	+41N	−25N	=32B	=45N	4.5	29.5	29.5	10.25	1713	+30.4
28	De Souza, Marcus Vinicius Nora	1681	BRA	−12B	−56N	+47B	+52N	=20N	−25B	=51N	+49B	=24B	4.5	28.5	29.5	13.00	1798	+25.2
29	Felix, Raimundo Nascimento	1936	BRA	+55B	−1N	F	−41B	=50N	+46B	+19N	+26B	F	4.5	28.0	28.0	15.25	1829	-13.8
30	Nunes, Lino Dias	1590	BRA	=16B	−23N	−22B	−44N	+47B	+52N	+41B	F	+51N	4.5	27.5	27.5	13.00	1726	+24.8
31	Gomes Filho, Fernando Queiroz	0	BRA	+44B	−14N	+60B	−17N	−40B	=50B	+49N	−36N	+58B	4.5	26.0	26.0	7.25	1814	0.0
32	Mesquita, Arnaldo Leite	1743	BRA	−1B	+38N	+52B	+15N	=13B	−12N	−10B	=27N	−36B	4.0	42.0	44.0	16.00	1813	+9.2
33	Celani, Guilherme Fontes	1855	BRA	−19N	+46B	+57N	+20B	−14B	+36N	−4N	F	−7B	4.0	38.0	39.0	12.50	1922	+16.0
34	Martins, Gustavo Faria	1683	BRA	−6N	+61B	=25N	+18B	−7N	−43B	=38N	+51B	F	4.0	34.5	34.5	11.25	1721	+5.2
35	De Carvalho Jr, Rogerio Brambilla	1946	BRA	+38B	+50N	−3B	−42N	+53B	=22N	−18B	=43N	F	4.0	34.0	36.0	12.25	1815	-51.6
36	Chaves, Jorge Antonio Torres	1921	BRA	+57N	F	−5B	+53B	−6N	−33B	−26N	+31B	+32N	4.0	32.0	32.0	11.50	1737	-27.8
37	Campos, Alexandre Ferreira	2037	BRA	+45N	−11B	=43N	+50B	=39N	+26B	−8N	F	F	4.0	28.0	28.0	13.25	1868	-26.8
38	Silva, Gabriel Henry Francisconi	1589	BRA	−35N	−32B	+44B	−40N	=52B	+59N	=34B	=58N	=54B	4.0	22.5	23.0	7.50	1723	+52.0
39	Reimberg, Arthur Bernardo	1901	BRA	F	−12N	+58B	=10N	=37B	−15N	+40B	=21N	F	3.5	33.0	33.0	11.00	1937	+14.0
40	de Almeida,Roberto A. Ferreira	1773	BRA	−2N	−57B	+55N	+38B	+31N	−20B	−39N	=45B	−41N	3.5	32.5	33.5	11.50	1615	-26.4
41	Heubeck, Flavio	1690	BRA	=23B	−16N	F	+29N	−10B	−27B	−30N	+59N	+40B	3.5	32.5	32.5	10.75	1797	+17.6
42	Farias, Jose Henrique Pontes	1897	BRA	F	−4B	+48N	+35B	−21N	−23B	+50N	−13B	−19N	3.0	35.0	35.0	9.50	1858	-13.6
43	Videira, Matheus Martins	1736	BRA	F	−13N	=37B	−16N	+51B	+34N	−20B	=35B	−26N	3.0	33.5	33.5	10.00	1762	+4.8
44	Tubone, Guilherme Hideo	1816	BRA	−31N	−48B	−38N	+30B	F	+45B	−17N	−19B	+52N	3.0	31.0	31.0	9.50	1579	-61.6
45	Sarmento, Flora Ferreira	1585	BRA	−37B	+47N	−17B	+56N	−24B	−44N	F	=40N	=27B	3.0	29.5	30.5	8.00	1560	-11.6
46	Goncalves, Sergio	0	BRA	=22B	−33N	+63N	+59B	−16B	−29N	−54N	=50B	−49N	3.0	25.0	25.0	4.00	1659	0.0
47	Gualberto, Caleb Elias Hussin	0	BRA	−11N	−45B	−28N	=55B	−30N	+56N	+59B	=52B	F	3.0	22.5	22.5	3.25	1475	0.0
48	Monteiro, Mauricio Bertelli De C	1579	BRA	−10N	+44N	−42B	+60B	−8N	F	+55B	F	−50N	3.0	22.0	22.0	4.50	1714	+34.0
49	Nogueira, Adnilton Correia de Almeida	1594	BRA	−7N	−8B	F	=51N	−18B	+55N	−31B	−28N	+46B	2.5	32.5	32.5	5.50	1028	-17.8
50	Juca, Diogo Ubirarajara Correa	1731	BRA	F	−35B	F	−37N	=29B	=31N	−42B	=46N	+48B	2.5	26.0	26.0	9.00	1730	-3.6
51	Gracie, Reryckson Oliveira	0	BRA	+8N	−9B	−53N	=49B	−43N	F	=28B	−34N	−30B	2.0	32.0	32.0	9.50	1514	0.0
52	Gomes, Marcelo	0	BRA	=26N	=25B	−32N	−28B	=38N	−30B	F	=47N	−44B	2.0	32.0	32.0	8.00	1516	0.0
53	Callegari, Lucca	1581	BRA	−3B	+55N	+51B	−36N	−35N	−19B	F	F	F	2.0	27.5	27.5	3.50	1149	-6.0
54	Lourenco, Valerio Dos Santos	1662	BRA	−4N	F	F	−25B	F	−18N	+46B	−11B	=38N	1.5	28.5	28.5	5.00	1488	-17.6
55	Cordeiro, Lana De Aragao	0	BRA	−29N	−53B	−40B	=47N	F	−49B	−48N	−?B	+59N	1.5	19.0	19.0	2.00	1360	0.0
56	Ceglio, Brian Azevedo	0	BRA	−20N	+28B	−8N	−45B	−27N	−47B	F	F	F	1.0	25.5	25.5	4.50	1485	0.0
57	Da Fonseca, Alessandro Martins	0	BRA	−36B	+40N	−33B	F	F	F	F	F	F	1.0	12.0	12.0	3.50	1725	0.0
58	Carneiro, Luis Guilherme Rosado	1747	BRA	F	−10B	−39N	F	−15B	F	−24N	=38B	−31N	0.5	31.0	31.0	2.00	1500	-24.8
59	Guzman, Alessandro Lucien dos S	1761	BRA	F	−5B	=19N	−46N	F	−38B	−47N	−41B	−55B	0.5	27.5	27.5	2.50	971	-60.0
60	Teixeira, Giovana dos Santos	1756	BRA	F	−7B	−31N	−48N	F	F	F	F	F	0.0	20.5	20.5	0.00	1000	-36.4
61	FIDE 538097214	0	—	−24B	−34N	F	F	F	F	F	F	F	0.0	11.0	11.0	0.00	996	0.0
62	Salles, Carlos Will	0	BRA	−18N	−27B	F	F	F	F	F	F	F	0.0	9.5	9.5	0.00	893	0.0
63	De Alverga, Ivan Polari	1630	BRA	−5N	F	−46B	F	F	F	F	F	F	0.0	9.0	9.0	0.00	1230	-3.2
64	Bezerra,Rodolfo de Araujo	0	BRA	−9N	F	F	F	F	F	F	F	F	0.0	9.0	9.0	0.00	1138	0.0
65	Da Silva, Adilson Antonio	1545	BRA	−13B	F	F	F	F	F	F	F	F	0.0	6.5	6.5	0.00	1145	-3.2
66	Braga, Joao Lucas Santos	0	BRA	−17B	F	F	F	F	F	F	F	F	0.0	6.5	6.5	0.00	1113	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Silva, Gabriel Henry FrancisconiBRA
+52.0
4.0 pts · #28
2Aipperspach, Joao LizakBRA
+49.2
5.5 pts · #15
3Monteiro, Mauricio Bertelli De CBRA
+34.0
3.0 pts · #40

Top rating losers

1De Miranda, Eduardo Rodrigues CBRA
-67.2
5.0 pts · #17
2Tubone, Guilherme HideoBRA
-61.6
3.0 pts · #43
3Guzman, Alessandro Lucien dos SBRA
-60.0
0.5 pts · #61

Biggest upsets

R4+246 Elo gap
Heubeck, Flavio1690 beat Felix, Raimundo Nascimento1936
R2+237 Elo gap
Monteiro, Mauricio Bertelli De C1579 beat Tubone, Guilherme Hideo1816
R3+227 Elo gap
Silva, Gabriel Henry Francisconi1589 beat Tubone, Guilherme Hideo1816