Regional Sudeste Amador U1700

Open SwissStandard

79 players participated in this 6-round tournament, held from 17 Oct 2025 to 19 Oct 2025 in Sao Jose dos Campos SP, Brazil. Top 10 Elo average was 1675, and top seed was Michel Rangel Vanderlei (🇧🇷 BRA, 1699).

Pedro Henrique Silva Montagnolli (🇧🇷 BRA, 1665) won with 5.5/6, ahead of Bianca Alencar de S. Nascimento (5.0) and Alberto Gadelha Serra (5.0). Montagnolli clinched sole first place in the final round.

The biggest upset came in round 6: Juliana Vitiello Marangon (1427) beat Catarina Monteiro Machado (1647), a +220-point gap.

Location

🇧🇷Sao Jose dos Campos SP, Brazil

Dates

17 Oct 2025 → 19 Oct 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 6 rounds

Top seed

🇧🇷Michel Rangel Vanderlei1699

Avg top 10

1,675

Participants

Federations · 1 represented

🇧🇷Brazil×76

Top 3

🥇
Pedro Henrique Silva Montagnolli
🇧🇷BRA·1665
5.5pts·2388perf+79.6
🥈
Bianca Alencar de S. Nascimento
🇧🇷BRA·1659
5.0pts·1788perf+13.4
🥉
Alberto Gadelha Serra
🇧🇷BRA
5.0pts·1706perf0.0

How it unfolded

Top 6 · 6 rounds

Pedro Henrique Silva Montagnolli led from R6; +0.5-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R6.

Co-leaders

Montagnolli5.5Serra5Nascimento5Mendes5Vanderlei4.5De Fernando4.5— ex-leaders:Nascimentoled R5, #14

R6 · LEADER CHANGE19 Oct

Pedro Henrique Silva Montagnolli takes the sole lead (5.5/6).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Pedro Henrique Silva Montagnolli drew with Alberto Gadelha Serra (White).

WIN STREAKS · 3 top finishers

Pedro Henrique Silva Montagnolli 3 wins (R1–R3)Alberto Gadelha Serra 3 wins (R1–R3)Bianca Alencar de S. Nascimento 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Pedro Henrique Silva Montagnolli	*	½	1	—
2Alberto Gadelha Serra	½	*	—	—
3Bianca Alencar de S. Nascimento	0	—	*	—
4Larissa Stephanie Amaral Mendes	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Montagnolli, Pedro Henrique Silva	1665	BRA	+75N	+21B	+9N	=3B	+5N	+2B	5.5	22.5	23.0	20.50	2388	+79.6
2	Nascimento, Bianca Alencar de S.	1659	BRA	+27B	+59N	+23B	+6B	+7N	−1N	5.0	21.5	23.5	18.00	1788	+13.4
3	Serra, Alberto Gadelha	0	BRA	+?B	+30N	+13B	=1N	+19B	=8N	5.0	20.5	20.5	15.50	1706	0.0
4	Mendes, Larissa Stephanie Amaral	1687	BRA	−31N	+45N	+71B	+53B	+33N	+12B	5.0	14.5	16.0	13.00	1719	+3.2
5	Aguiar,Joao Pedro	1675	BRA	+37B	+43N	+33B	+15N	−1B	=7N	4.5	20.0	22.5	14.75	1782	+22.0
6	De Bastiani, Tales Otavio	1682	BRA	+34B	+20N	+14B	−2N	+60B	=17N	4.5	19.5	21.5	14.50	1732	+13.6
7	Pimenta E Souza, Pedro Parron	0	BRA	+68B	+56N	+29B	+22N	−2B	=5B	4.5	18.0	19.5	12.25	1675	0.0
8	Vanderlei, Michel Rangel	1699	BRA	+47B	=46N	=53B	+58N	+14B	=3B	4.5	16.0	18.0	13.25	1803	+23.6
9	Baba, Marcelo Massakazu	1589	BRA	+77B	+67N	−1B	+54N	=13B	+32N	4.5	16.0	16.0	8.50	1465	-12.8
10	De Araujo Junior, Antonio	0	BRA	−42N	=44B	+26N	+62B	+47B	+20N	4.5	14.5	16.5	12.75	1630	0.0
11	De Fernando, Henrique Alves	0	BRA	−29B	+?N	=30B	+70N	+24B	+19N	4.5	14.5	14.5	10.00	1662	0.0
12	Da Silva, Matheus Oliveira	0	BRA	+24B	−14N	+56B	+23N	+15B	−4N	4.0	20.0	22.0	13.00	1668	0.0
13	Ribeiro,Erica De Jesus	1650	BRA	+55N	+31B	−3N	+18B	=9N	=22B	4.0	20.0	22.0	13.00	1848	+15.6
14	Silva, Allan de Souza	1613	BRA	+48N	+12B	−6N	+34B	−8N	+31B	4.0	19.0	21.5	12.50	1594	-2.0
15	Kobayashi, Erica	1635	BRA	+36B	+25N	+54B	−5B	−12N	+35N	4.0	18.0	20.0	11.50	1559	-7.6
16	De Oliveira, John Richard Aparecido	1643	BRA	−43B	+36N	−20B	+59N	+37B	+60N	4.0	14.0	16.0	10.00	2320	+13.6
17	Lorenzetti, Leticia Sylvestre	1578	BRA	+69N	=19B	+72N	F	+29B	=6B	4.0	13.5	13.5	9.50	1906	+49.2
18	Dos Santos, Carlos Henrique Ferre	1537	BRA	−66B	+77N	+67B	−13N	+54B	+29N	4.0	12.0	12.0	6.50	1646	+12.4
19	Da Silva, Joao Pedro Linhares	0	BRA	+61B	=17N	+40B	+32N	−3N	−11B	3.5	19.5	21.5	10.00	1631	0.0
20	Martins,Miguel Machado	0	BRA	+57N	−6B	+16N	=42B	+49N	−10B	3.5	18.0	20.0	9.75	1690	0.0
21	Barbosa, Lucas Alves	1573	BRA	+78B	−1N	=25B	+30N	−32B	+43N	3.5	17.5	17.5	7.25	1635	+6.8
22	Goulart, Joao Paulo	0	BRA	F	+26B	+62N	−7B	+42N	=13N	3.5	16.5	16.5	10.00	1679	0.0
23	Viana, Miguel Tai	1591	BRA	+63N	+73B	−2N	−12B	+55N	=41B	3.5	16.0	17.0	6.50	1577	-1.6
24	Bergamo, Victor Hugo Moura	1638	BRA	−12N	=55B	+45N	+72B	−11N	+53B	3.5	15.0	16.0	6.50	1785	+10.0
25	Ferreira, Murilo	0	BRA	+44N	−15B	=21N	=57B	=53N	+46B	3.5	14.5	16.5	8.75	1617	0.0
26	Hippertt, Joao	1607	BRA	=45B	−22N	−10B	+66N	+72N	+48B	3.5	14.5	15.5	6.25	2375	+9.2
27	Gobbi, Juliana Kaori	1444	BRA	−2N	−57B	+69N	+73B	=44N	+42B	3.5	13.5	14.5	6.25	1539	+18.4
28	Jaen, Otavio Aguilera	0	BRA	−56B	+61N	+38B	−60N	+58B	=49N	3.5	11.5	13.5	8.25	1608	0.0
29	Soares, Amanda Duarte	1643	BRA	+11N	+35B	−7N	+31B	−17N	−18B	3.0	20.0	23.0	10.50	1517	-26.8
30	Takahara, Fabio	1604	BRA	+51N	−3B	=11N	−21B	=36N	+55B	3.0	18.5	20.5	8.25	1493	-11.6
31	Amorim, Israel Santana Paiva	1513	BRA	+4B	−13N	+66B	−29N	+50B	−14N	3.0	18.5	20.0	9.00	1582	+17.6
32	Goulart, Luis Fernando	0	BRA	F	+39N	+46B	−19B	+21N	−9B	3.0	17.0	17.0	9.00	1622	0.0
33	Da Silva, Joao Pedro M Soares	1600	BRA	+79B	+66N	−5N	+35B	−4B	−40N	3.0	17.0	17.0	4.50	1424	-36.0
34	Cevada, Guilherme Henrique Dirami	1480	BRA	−6N	+69B	+73N	−14N	−40B	+63B	3.0	15.0	16.0	4.50	853	-32.8
35	Chahuaylla, Diego R Chahuares	1467	BRA	+50B	−29N	+70B	−33N	+57N	−15B	3.0	14.5	16.0	6.00	1636	+60.4
36	Dias Bevilaqua, Gustavo Cesar	0	BRA	−15N	−16B	=?B	+76N	=30B	+58N	3.0	13.5	13.5	4.00	1538	0.0
37	Vaz, Vania Dora Madona	1455	BRA	−5N	−64B	+77N	+78B	−16N	+54B	3.0	12.5	12.5	2.00	859	-9.6
38	Maset, Lis Yumi Yoshida	1558	BRA	F	=49B	−28N	+51B	=67N	+62B	3.0	12.0	12.0	6.50	1845	+28.8
39	Duarte, Gabriel Gimenez	1588	BRA	F	−32B	=55N	=48B	+45N	+67B	3.0	11.5	11.5	6.25	1412	-9.2
40	Silva, Aram Lara Resende	1663	BRA	F	F	−19N	+74B	+34N	+33B	3.0	10.5	10.5	7.00	2297	+34.4
41	Pereira, Paulo Bonachela	1661	BRA	F	−53N	=74B	+65N	+61B	=23N	3.0	10.5	10.5	6.25	1574	-21.2
42	Tsiloufas, Stergios Pericles	1597	BRA	+10B	−54N	+59B	=20N	−22B	−27N	2.5	17.0	19.0	8.25	643	-28.4
43	Moyses, Francesco Biagioni Russo	0	BRA	+16N	−5B	=57N	=44B	=46N	−21B	2.5	17.0	19.0	7.50	1562	0.0
44	Ribeiro,Ricardo de Biasi	1602	BRA	−25B	=10N	+76B	=43N	=27B	F	2.5	16.5	17.0	5.75	1443	-8.4
45	Gomes, Joao Marcos Ferreira	0	BRA	=26N	−4B	−24B	+?N	−39B	+68N	2.5	16.5	16.5	3.25	1565	0.0
46	Sarinho, Rafael Sato	1576	BRA	+76B	=8B	−32N	=50N	=43B	−25N	2.5	16.0	16.5	5.25	1689	+12.4
47	Ary, Thiago Otaviano	1520	BRA	−8N	+63B	+78N	=49B	−10N	F	2.5	16.0	16.0	3.25	1497	-2.4
48	Teixeira, Gustavo Aparecido Nagae	0	BRA	−14B	+68N	−60B	=39N	+56B	−26N	2.5	14.5	16.0	5.00	1542	0.0
49	Deguti Hata, Arthur Jun	1681	BRA	F	=38N	+65B	=47N	−20B	=28B	2.5	14.5	14.5	6.50	1632	-6.8
50	Brazileiro, Jair Ferreira	1679	BRA	−35N	=75B	+52N	=46B	−31N	=71B	2.5	12.5	13.0	4.75	1434	-78.0
51	Mota, Marcos Miguel De Souza S	0	BRA	−30B	−58N	+68B	−38N	=70B	+75N	2.5	11.0	11.5	2.75	1509	0.0
52	Magalhaes, Giovanna Almeida	1525	BRA	−54B	=76N	−50B	=68N	=69B	+66N	2.5	9.0	9.5	3.25	1447	-8.0
53	Ramos, Joao Gabriel Batista	1550	BRA	F	+41B	=8N	−4N	=25B	−24N	2.0	19.5	19.5	7.00	1584	+6.0
54	Bezerra, Kayque Da Silva	0	BRA	+52N	+42B	−15N	−9B	−18N	−37N	2.0	18.0	20.5	5.00	1431	0.0
55	Tsiloufas, Elena Maria	1412	BRA	−13B	=24N	=39B	+56N	−23B	−30N	2.0	17.0	19.0	5.25	1487	+22.0
56	Monteiro, Marcio	1601	BRA	+28N	−7B	−12N	−55B	−48N	+73B	2.0	16.5	17.5	4.50	612	-30.0
57	Machado, Catarina Monteiro	1647	BRA	−20B	+27N	=43B	=25N	−35B	−65N	2.0	16.0	18.0	6.50	1313	-52.0
58	Palomino, Fred Chahuaylla	1556	BRA	−73N	+51B	+64N	−8B	−28N	−36B	2.0	15.5	16.5	4.50	899	-12.4
59	Constantino, Felipe Liguori	0	BRA	+70N	−2B	−42N	−16B	+73N	F	2.0	15.0	16.0	2.50	1435	0.0
60	Morgado, Anderson Alves	1584	BRA	F	F	+48N	+28B	−6N	−16B	2.0	14.5	14.5	6.00	863	-31.6
61	Santana, Expedito	1530	BRA	−19N	−28B	+63N	+64B	−41N	F	2.0	14.0	16.0	4.00	861	-6.4
62	Gomes, Luis Gustavo Turella	1622	BRA	F	+74N	−22B	−10N	+75B	−38N	2.0	12.5	12.5	1.50	1602	-2.8
63	Resende, Diego Maciel	0	BRA	−23B	−47N	−61B	+77B	+?N	−34N	2.0	11.0	11.0	0.00	1307	0.0
64	Uehara, Lucas Akio	0	BRA	−72B	+37N	−58B	−61N	−71B	+78N	2.0	9.5	9.5	3.00	1272	0.0
65	Marangon,Juliana Vitiello	1427	BRA	F	F	−49N	−41B	+78N	+57B	2.0	7.5	7.5	2.00	1538	+15.2
66	Lan, Gabriela Yan Yi	0	BRA	+18N	−33B	−31N	−26B	=74N	−52B	1.5	16.0	17.0	4.50	1339	0.0
67	Castellano, Olivia Carmo	0	BRA	F	−9B	−18N	+71N	=38B	−39N	1.5	16.0	16.0	3.00	1396	0.0
68	Pereira, Giuseppe Nicoluzzi Bahia	1600	BRA	−7N	−48B	−51N	=52B	+77N	−45B	1.5	14.5	14.5	1.25	1526	-4.0
69	Santiago, Leonardo Franzon	0	BRA	−17B	−34N	−27B	F	=52N	+72B	1.5	14.0	14.0	2.25	1371	0.0
70	De Lima, Pedro Henrique Mendes	1614	BRA	−59B	F	−35N	−11B	=51N	+74B	1.5	13.0	13.0	2.25	1428	-19.6
71	Santos, Lucas Pereira	1443	BRA	F	F	−4N	−67B	+64N	=50N	1.5	11.0	11.0	3.25	1490	+4.4
72	Franca, Leonardo Medeiros	1575	BRA	+64N	F	−17B	−24N	−26B	−69N	1.0	14.5	14.5	2.00	808	-27.4
73	De Sousa, Dafny Fleming	0	BRA	+58B	−23N	−34B	−27N	−59B	−56N	1.0	14.0	16.0	2.00	1294	0.0
74	Gomes, Bernardo Camargos	1412	BRA	F	−62B	=41N	−40N	=66B	−70N	1.0	11.0	11.0	2.25	1318	-14.0
75	Santana, Marcelo Ribeiro	1446	BRA	−1B	=50N	F	F	−62N	−51B	0.5	12.5	12.5	1.25	1382	-8.0
76	Salgado, Daniel Santos	0	BRA	−46N	=52B	−44N	−36B	F	−?B	0.5	10.5	10.5	1.25	1258	0.0
77	FIDE 538044374	0	—	−9N	−18B	−37B	−63N	−68B	F	0.0	15.0	15.0	0.00	745	0.0
78	FIDE 538020637	0	—	−21N	F	−47B	−37N	−65B	−64B	0.0	13.0	13.0	0.00	694	0.0
79	FIDE 538053250	0	—	−33N	F	F	F	F	F	0.0	4.5	4.5	0.00	800	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Montagnolli, Pedro Henrique SilvaBRA
+79.6
5.5 pts · #1
2Chahuaylla, Diego R ChahuaresBRA
+60.4
3.0 pts · #19
3Lorenzetti, Leticia SylvestreBRA
+49.2
4.0 pts · #22

Top rating losers

1Brazileiro, Jair FerreiraBRA
-78.0
2.5 pts · #26
2Machado, Catarina MonteiroBRA
-52.0
2.0 pts · #55
3Da Silva, Joao Pedro M SoaresBRA
-36.0
3.0 pts · #48

Biggest upsets

R6+220 Elo gap
Marangon,Juliana Vitiello1427 beat Machado, Catarina Monteiro1647
R1+212 Elo gap
Chahuaylla, Diego R Chahuares1467 beat Brazileiro, Jair Ferreira1679
R4+189 Elo gap
Tsiloufas, Elena Maria1412 beat Monteiro, Marcio1601