CChessStats

Regional Centro Oeste Amador STD 2025 U1700

Open SwissStandard

25 players participated in this 5-round tournament, held from 13 Nov 2025 to 25 Nov 2025 in Goiania GO, Brazil. Top 10 Elo average was 1622, and top seed was Pedro Hitiro Matsunaga (🇧🇷 BRA, 1699).

Richard Da Silva Castilho (🇧🇷 BRA, 0) won with 4.5/5, ahead of Francisco A Barrozo De Siqueira (4.5) and Felipe Teles Barros (4.0). Castilho won on tie-break after catching the field in the final round.

The biggest upset came in round 2: Ramon Italo Mendonca Martins (1448) beat Frederico Cavalcante Guerra (1614), a +166-point gap.

Location
🇧🇷Goiania GO, Brazil
Dates
13 Nov 2025 → 25 Nov 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
Avg top 10
1,622
Participants
25
Federations · 1 represented
🇧🇷Brazil×24
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R4; 2 players tied at 4.5/5, decided on Buchholz.

Co-leaders
8
4
2
1
2
1.52.545R1R2R3R4R5
R4–R5 · LEAD HELD

Francisco A Barrozo De Siqueira held the sole lead from R4 through R5 without losing it.

R5 · TIEBREAK CLUSTER

2 players finish on 4.5/5. Castilho takes the title on Buchholz Cut1 (13.5).

R1–R4 · WIN STREAK

Francisco A Barrozo De Siqueira won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Castilho, Richard Da Silva0BRA+5N+20B=3N+9B+7N4.513.514.512.5016980.0
2De Siqueira, Francisco A Barrozo0BRA+10N+18B+11N+4B=3N4.512.013.011.0016340.0
3Barros, Felipe Teles1692BRA+23B+19N=1B+18N=2B4.011.011.06.502403+7.6
4Maia, Carlos Henrique de Alarcao0BRA+8B+?N+16B2N=6B3.512.012.06.0016740.0
5Hitiro Matsunaga, Pedro1699BRA1B+23N+12N=16B+10N3.510.510.55.251812+7.4
6Assan, Nasser Charif1620BRA=13N=17B=10N+12B=4N3.010.011.56.751659+6.0
7Filho, Marcos Antonio Correa0BRA+14B16N+15B+?N1B3.010.010.04.0016150.0
8De Morais, Pedro Castro1696BRA4N+13B17N+21B+16N3.08.59.54.501546-16.0
9Mendes, Caio Franco1581BRA19B+21N+24B1N+18B3.07.57.52.002403+10.6
10Martins, Ramon Italo Mendonca1448BRA2B+14N=6B+23N5B2.513.013.03.501645+30.4
11Xavier, Lana Evellyn Santos1550BRAF+22N2B=13B=12N2.09.09.02.501615+3.6
12Gasperini, Giordanna Novaes1615BRA=22B+25N5B6N=11B2.09.09.01.251487-28.0
13Assan, Lucio Charif Medina0BRA=6B8N+25B=11N?B2.08.08.02.5015040.0
14Guerra, Frederico Cavalcante1614BRA7N10B+22B+24N20B2.07.07.00.50649-14.4
15Carvalho, Abraao1547BRAFF7N+25B+24B2.03.03.00.002227+13.6
16Morgado, Anderson Alves1552BRAF+7B4N=5N8B1.513.013.04.751506-4.4
17Silva, Maria Vitoria de Sousa1539BRAF=6N+8BFF1.56.06.04.501852+32.8
18Roeder, Inacio Clacier1602BRA+21B2NF3B9N1.012.513.51.00837-36.4
19Angosto Pierre, Tomas Benfica0BRA+9N3BFFF1.08.08.03.0016370.0
20Coelho, Marco Tulio Ferreira0BRAF1N?BF+14N1.07.07.02.0016000.0
21Sales, Pedro Lucas Souza0BRA18N9BF8N+23B1.07.07.00.008270.0
22Cardoso, Guilherme Gomes0BRA=12N11B14NFF0.57.07.01.0013200.0
23Sales, Gabriel Souza0BRA3N5BF10B21N0.011.011.00.008140.0
24FIDE 5380549900?BF9N14B15N0.07.07.00.007820.0
25Da Silva, Fabio De Moraes Vaz1425BRAF12B13N15NF0.06.06.00.00781-12.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers