Torneio Internacional de Xadrez da cidade de Rio Branco Acre Brasil

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72 players participated in this 6-round tournament, held from 01 May 2026 to 03 May 2026 in Rio Branco AC, Brazil. 3 federations represented. Top 10 Elo average was 1926, and top seed was Gabriel Carckeno Do Carmo (🇧🇷 BRA, 2046).

Everson De Moura Araujo (🇧🇷 BRA, 2016) won with 5.5/6, ahead of Mateus Nascimento De Souza (5.0) and Yvan Lukas Bertoldo Araujo (5.0). Araujo won solo starting round 4.

The biggest upset came in round 4: Mateus Oliveira Guimaraes (1755) beat Antonio Alves Leitao Neto (1982), a +227-point gap.

Location

🇧🇷Rio Branco AC, Brazil

Dates

01 May 2026 → 03 May 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 6 rounds

Top seed

🇧🇷Gabriel Carckeno Do Carmo2046

Avg top 10

1,926

Participants

Federations · 3 represented

🇧🇷Brazil×36

🇵🇪Peru×9

🇧🇴Bolivia×2

Top 3

🥇
Everson De Moura Araujo
🇧🇷BRA·2016
5.5pts·2200perf+17.8
🥈
Mateus Nascimento De Souza
🇧🇷BRA·1970
5.0pts·2108perf+35.2
🥉
Yvan Lukas Bertoldo Araujo
🇧🇷BRA·1701
5.0pts·1998perf+72.4

How it unfolded

Top 6 · 6 rounds

Everson De Moura Araujo led from R4; +0.5-point edge over the runner-up.

Co-leaders

Araujo5.5De Souza5Araujo5Lovon Manzano5Do Carmo4.5Abarca Torres4.5

R4–R6 · LEAD HELD

Everson De Moura Araujo held the sole lead from R4 through R6 without losing it.

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Everson De Moura Araujo drew with Mateus Nascimento De Souza (White).

WIN STREAKS · 2 top finishers

Everson De Moura Araujo 5 wins (R1–R5)Mateus Nascimento De Souza 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Everson De Moura Araujo	*	½	—	—
2Mateus Nascimento De Souza	½	*	—	—
3Yvan Lukas Bertoldo Araujo	—	—	*	—
4Christian Lovon Manzano	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Araujo, Everson De Moura	2016	BRA	+21B	+18N	+6B	+5N	+31N	=2B	5.5	21.0	24.0	21.50	2200	+17.8
2	De Souza, Mateus Nascimento	1970	BRA	+38B	+20N	+33B	=7N	+8B	=1N	5.0	21.0	24.0	19.00	2108	+35.2
3	Araujo, Yvan Lukas Bertoldo	1701	BRA	+56B	=8N	+23B	+9N	=5B	+12N	5.0	21.0	23.0	18.50	1998	+72.4
4	Lovon Manzano, Christian	1919	PER	+43B	+35N	=9B	+25N	+7B	=6N	5.0	20.0	22.5	18.00	2013	+11.6
5	Da Silva, Ricardo Moura	1938	BRA	+57N	+14B	+11N	−1B	=3N	+19B	4.5	22.5	24.5	16.50	1919	-0.6
6	Pereira, Elivan Dos Santos	1837	BRA	+36N	+12B	−1N	+37B	+14N	=4B	4.5	21.5	24.5	16.50	1921	+23.6
7	Abarca Torres, Ronaldo Manuel	1862	PER	+52N	+19B	+15N	=2B	−4N	+26B	4.5	21.0	23.0	15.50	1980	+16.4
8	Do Carmo, Gabriel Carckeno	2046	BRA	+49N	=3B	+32N	+10B	−2N	+31B	4.5	20.5	23.0	15.50	1951	-9.2
9	Amorim Filho, Robson Bezerra	1717	BRA	+16N	+51B	=4N	−3B	+42N	+44B	4.5	19.0	21.0	13.50	1829	+12.2
10	Cruz Filho, Marcos Vinicius	1830	BRA	+55B	+46N	=13B	−8N	+23B	+22N	4.5	18.0	20.0	13.50	1903	+23.6
11	Moreira, Benjamim Araujo	1812	BRA	+69B	+45N	−5B	+35N	=18B	+27N	4.5	17.0	17.5	11.25	1803	-1.6
12	Da Silva, Elson Ruben Gomes	1625	BRA	+24B	−6N	+54B	+17N	+33N	−3B	4.0	20.0	22.0	12.50	1747	+25.6
13	Leitao Neto, Antonio Alves	1982	BRA	+39N	+22B	=10N	−31B	+20N	=15B	4.0	18.5	21.5	14.25	1818	-19.0
14	Sanz Lucas, Edward	1667	PER	+66B	−5N	+38B	+40N	−6B	+18N	4.0	18.5	19.5	10.50	1691	+2.4
15	Da Silva, Marcos Venicio	1802	BRA	+64B	+34N	−7B	=46N	+43B	=13N	4.0	16.5	17.5	9.75	1734	-12.0
16	FIDE 538073277	0	—	−9B	+62N	−20B	+50N	+34B	+?B	4.0	14.5	14.5	6.50	1586	0.0
17	Nascimento, Douglas Cunha	1693	BRA	=59N	=50B	+39N	−12B	+52N	+36B	4.0	14.0	15.5	9.75	825	-23.6
18	Mendes, Samuel Silva	1671	BRA	+70N	−1B	+57N	+32B	=11N	−14B	3.5	19.0	19.0	7.25	1686	-1.2
19	Kohagura Arrunategui, Jose Andres Hideki	1656	PER	+71B	−7N	=43B	+24N	+25B	−5N	3.5	18.5	18.5	8.25	1749	+12.8
20	De Araujo, Antonio Marcos Diniz	1657	BRA	+48N	−2B	+16N	=42B	−13B	+43N	3.5	18.0	20.5	10.25	1176	-5.4
21	Ueda, Lucas Kentaro	0	BRA	−1N	+70B	−22N	+48B	+32N	=29B	3.5	18.0	18.0	7.25	1640	0.0
22	Maciel Junior, Joao Edson Costa	1684	BRA	+54B	−13N	+21B	+34N	=44N	−10B	3.5	17.5	19.5	9.75	1706	+1.6
23	Quispe Mayta, Delvin Antonini	1462	PER	=50N	+68B	−3N	+47B	−10N	+42B	3.5	16.5	17.0	6.50	966	-12.0
24	Saire Benitez, Leandro Alex	0	BOL	−12N	+36B	+?N	−19B	+49N	=28B	3.5	16.5	16.5	7.25	1535	0.0
25	Gondim,Cezar Augusto de Albuquerque	1822	BRA	=42N	+53B	+63N	−4B	−19N	+47B	3.5	15.5	17.0	7.25	988	-43.6
26	Sturza, Vernei Dutra	1809	BRA	+47N	−32B	=42N	+59B	+46N	−7N	3.5	15.0	16.5	7.75	1559	-19.4
27	Pereira Reategui, Lian Howen	0	PER	−32N	=47B	+68N	+51B	+37N	−11B	3.5	15.0	15.5	6.75	1624	0.0
28	Lourenco, Vanda Goncalves	1509	BRA	+62B	−33N	−40B	+30N	+60B	=24N	3.5	14.5	16.0	8.25	957	-7.6
29	FIDE 3364887	0	—	−34B	+64N	−45B	+55N	+35B	=21N	3.5	14.0	15.0	7.75	1447	0.0
30	Da Silva, Pericles Joab M	0	BRA	+?N	−31B	=51N	−28B	+59N	+46B	3.5	12.5	12.5	5.00	1557	0.0
31	Guimaraes, Mateus Oliveira	1755	BRA	F	+30N	+44B	+13N	−1B	−8N	3.0	20.0	20.0	10.00	1976	+44.0
32	Da Silva, Igor Diore Palza Porfir	1595	BRA	+27B	+26N	−8B	−18N	−21B	+60N	3.0	18.5	20.0	8.50	1700	+11.6
33	Dos Santos, Edson Gomes	1757	BRA	F	+28B	−2N	+45N	−12B	+39B	3.0	18.0	18.0	9.00	1674	-8.8
34	Barazorda Yucra, Jose Fabian	1497	PER	+29N	−15B	+50N	−22B	−16N	+53B	3.0	17.0	19.0	7.50	943	-16.0
35	Souza , Neurismar Da Rocha	1629	BRA	+65N	−4B	+60N	−11B	−29N	+52B	3.0	16.5	17.5	4.50	1066	-8.4
36	Pinheiro, Gabriel Guerra	0	BRA	−6B	−24N	+62B	+67N	+45B	−17N	3.0	16.0	17.0	5.00	1582	0.0
37	Fernandez Palma, Alejandro	1632	BOL	+40B	−44N	+55B	−6N	−27B	+54N	3.0	15.5	17.5	7.00	1049	-18.0
38	Brandao, Asaffe Daniel O	0	BRA	−2N	+48B	−14N	=61B	=53N	+56B	3.0	15.5	17.0	6.25	1019	0.0
39	FIDE 538047284	0	—	−13B	+66N	−17B	+70N	+41B	−33N	3.0	15.0	15.0	4.00	1575	0.0
40	Mendibal Pacheco, Jesus Andre	0	PER	−37N	+52B	+28N	−14B	−?N	+59B	3.0	14.0	14.0	7.00	1377	0.0
41	Cardoso, Kamilla Helmann	1640	BRA	=53N	=60B	+61N	−44B	−39N	+57B	3.0	11.0	12.5	5.25	1061	-8.8
42	Santana, Luiz Renato Cortez	0	BRA	=25B	+58N	=26B	=20N	−9B	−23N	2.5	18.5	20.5	7.25	1544	0.0
43	Barufi, Francisco	0	BRA	−4N	+65B	=19N	+63B	−15N	−20B	2.5	17.5	18.5	4.25	1437	0.0
44	Oliveira, Reginaldo Sousa	1861	BRA	F	+37B	−31N	+41N	=22B	−9N	2.5	17.0	17.0	7.75	1686	-22.6
45	De Oliveira, Luiz Carlos	1591	BRA	+61N	−11B	+29N	−33B	−36N	=48B	2.5	16.5	18.0	6.25	985	-10.0
46	Neri, Laura da Cunha	1596	BRA	+72N	−10B	+67N	=15B	−26B	−30N	2.5	16.5	16.5	3.00	1541	-7.2
47	FIDE 538047195	0	—	−26B	=27N	+58B	−23N	+61B	−25N	2.5	16.0	17.5	5.25	898	0.0
48	Da Silva, Benjamin Henrique O	0	BRA	−20B	−38N	+64B	−21N	+50B	=45N	2.5	14.5	15.5	4.25	1431	0.0
49	Cardoso, Adalzisa Noemia Helmann	1414	BRA	−8B	−54N	+66B	+56N	−24B	=62N	2.5	13.5	14.5	3.75	1014	-3.2
50	FIDE 3374521	0	—	=23B	=17N	−34B	−16B	−48N	+71N	2.0	17.0	17.0	3.75	1426	0.0
51	Pacco Villafuerte, Keiler Nicolas	1455	PER	F	−9N	=30B	−27N	+58B	=63B	2.0	15.0	15.0	4.50	917	-7.2
52	FIDE 538078473	0	—	−7B	−40N	+71B	+72N	−17B	−35N	2.0	14.5	14.5	0.00	928	0.0
53	FIDE 81452551	0	—	=41B	−25N	−59B	+64N	=38B	−34N	2.0	14.0	15.0	4.00	1380	0.0
54	Fontinele Filho, Williams Fernand	0	BRA	−22N	+49B	−12N	−?B	+65N	−37B	2.0	14.0	14.0	3.50	1325	0.0
55	FIDE 538073129	0	—	−10N	+72B	−37N	−29B	−63N	+65B	2.0	13.5	13.5	1.00	931	0.0
56	FIDE 538073188	0	—	−3N	−?B	+65N	−49B	+67B	−38N	2.0	12.5	12.5	2.00	729	0.0
57	FIDE 538073242	0	—	−5B	+71N	−18B	−60N	+72B	−41N	2.0	12.5	12.5	0.00	950	0.0
58	FIDE 580000649	0	—	F	−42B	−47N	+68B	−51N	+61N	2.0	9.0	9.0	2.00	655	0.0
59	FIDE 538047187	0	—	=17B	F	+53N	−26N	−30B	−40N	1.5	16.0	17.5	4.00	1558	0.0
60	FIDE 580000681	0	—	F	=41N	−35B	+57B	−28N	−32B	1.5	14.5	14.5	3.50	1271	0.0
61	FIDE 81452560	0	—	−45B	+69N	−41B	=38N	−47N	−58B	1.5	13.0	13.5	2.00	816	0.0
62	FIDE 81479115	0	—	−28N	−16B	−36N	+71N	F	=49B	1.5	13.0	13.0	1.25	1269	0.0
63	FIDE 538078503	0	—	F	F	−25B	−43N	+55B	=51N	1.5	11.5	11.5	3.00	1446	0.0
64	FIDE 538047276	0	—	−15N	−29B	−48N	−53B	F	+69N	1.0	13.0	13.5	0.50	1002	0.0
65	FIDE 81480148	0	—	−35B	−43N	−56B	+66N	−54B	−55N	1.0	11.5	12.5	1.00	829	0.0
66	FIDE 538073200	0	—	−14N	−39B	−49N	−65B	F	+72N	1.0	11.5	11.5	0.00	741	0.0
67	FIDE 81488050	0	—	F	F	−46B	−36B	−56N	+68N	1.0	8.0	8.0	0.50	796	0.0
68	FIDE 580000673	0	—	F	−23N	−27B	−58N	=69B	−67B	0.5	10.5	10.5	0.25	662	0.0
69	FIDE 538013770	0	—	−11N	−61B	F	F	=68N	−64B	0.5	7.5	7.5	0.25	1012	0.0
70	FIDE 538073269	0	—	−18B	−21N	F	−39B	F	F	0.0	12.0	12.0	0.00	871	0.0
71	FIDE 81476159	0	—	−19N	−57B	−52N	−62B	F	−50B	0.0	11.0	11.0	0.00	856	0.0
72	FIDE 538047241	0	—	−46B	−55N	F	−52B	−57N	−66B	0.0	9.5	9.5	0.00	796	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Araujo, Yvan Lukas BertoldoBRA
+72.4
5.0 pts · #4
2Guimaraes, Mateus OliveiraBRA
+44.0
3.0 pts · #21
3De Souza, Mateus NascimentoBRA
+35.2
5.0 pts · #3

Top rating losers

1Gondim,Cezar Augusto de AlbuquerqueBRA
-43.6
3.5 pts · #53
2Nascimento, Douglas CunhaBRA
-23.6
4.0 pts · #45
3Oliveira, Reginaldo SousaBRA
-22.6
2.5 pts · #12

Biggest upsets

R4+227 Elo gap
Guimaraes, Mateus Oliveira1755 beat Leitao Neto, Antonio Alves1982
R2+214 Elo gap
Da Silva, Igor Diore Palza Porfir1595 beat Sturza, Vernei Dutra1809
R5+166 Elo gap
Kohagura Arrunategui, Jose Andres Hideki1656 beat Gondim,Cezar Augusto de Albuquerque1822