Player profile

Koga, Rafael Fernandes

Standard: 1650 Rapid: 1638 Blitz: 1598 (last updated 2026-11-02)

FIDE ID: 538002434 (view FIDE profile)

Federation: BRA Sex: M Birth Year: 2014 Age: 12

Title: — Women's title: — Other title: — FOA title: —

Games: 7 Wins: 3 (43%) Draws: 2 (29%) Losses: 2 (29%)

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Dossier

1 of 7 games analyzed.

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Openings

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As White 2 games 2W 0D 0L

King's Indian Defense 1 game 1W 0D 0L

Fianchetto Variation 1 game 1W 0D 0L

Immediate Fianchetto 1 game 1W 0D 0L

Catalan Opening 1 game 1W 0D 0L

Closed 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

As Black 5 games 1W 2D 2L

French Defense 2 games 0W 1D 1L

Advance Variation 1 game 0W 0D 1L

Milner-Barry Gambit, Hector Variation 1 game 0W 0D 1L

Exchange Variation 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Queen's Gambit Declined 2 games 1W 1D 0L

Three Knights Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Harrwitz Attack 1 game 0W 1D 0L

Orthodox Defense 1 game 0W 1D 0L

Pirc Defense 1 game 0W 0D 1L

Classical Variation 1 game 0W 0D 1L

Schlechter Variation 1 game 0W 0D 1L

Blunders Top 4 of 8

This player's costliest moves in analyzed games. Can you find the winning move?

2025.02.01 · 19... Bxb2 (−16.7% win chance) 1-0

Koga, Rafael Fernandes

Machado, Marcos Donizete

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2025.02.01 · 18... Qb6 (−14% win chance) 1-0

Koga, Rafael Fernandes

Machado, Marcos Donizete

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2025.02.01 · 15... Ne8 (−8.2% win chance) 1-0

Koga, Rafael Fernandes

Machado, Marcos Donizete

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2025.02.01 · 27... Nxc4 (−7.9% win chance) 1-0

Koga, Rafael Fernandes

Machado, Marcos Donizete

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Games Showing all 7 games

Date	Event	Round	Opponent	Result	Accuracy %	First moves
2026.10.14	FESTIVAL SUDESTE por EQUIPES – FESUEQ \| São Paulo/SP \|	6.7.3	2026.10.14 Galiano,Brand Ritian Anahue (538009773) (1572)	0	-	1. e4 e6 2. d4 d5 3. e5 c5
2026.10.14	FESTIVAL SUDESTE por EQUIPES – FESUEQ \| São Paulo/SP \|	5.6.3	2026.10.14 Ferreira, Reginaldo dos Santos (2144409) (1894)	1	-	1. d4 d5 2. c4 e6 3. Nc3 Nf6
2026.10.14	FESTIVAL SUDESTE por EQUIPES – FESUEQ \| São Paulo/SP \|	4.9.3	2026.10.14 Prats, Liam den Nijs	1	-	1. d4 Nf6 2. c4 g6 3. g3 Bg7
2026.10.14	FESTIVAL SUDESTE por EQUIPES – FESUEQ \| São Paulo/SP \|	3.9.3	2026.10.14 Takahara, Fabio (44726740) (1625)	½	-	1. e4 e6 2. d4 d5 3. exd5 exd5
2026.10.14	FESTIVAL SUDESTE por EQUIPES – FESUEQ \| São Paulo/SP \|	2.7.3	2026.10.14 Fernandes, Pedro Lopes (538017792)	1	-	1. d4 d5 2. c4 e6 3. g3 Nf6
2026.10.14	FESTIVAL SUDESTE por EQUIPES – FESUEQ \| São Paulo/SP \|	1.4.3	2026.10.14 De Miranda, Haniel Castro (538044960) (1616)	½	-	1. d4 d5 2. c4 e6 3. Nf3 Nf6
2025.02.01	II Sampa Chess Open - Rápido FIDE	7	2025.02.01 Machado, Marcos Donizete (44721846) (1714)	0	85.10%	1. e4 d6 2. d4 Nf6 3. Nc3 g6