Player profile

Kosaisoonthorn, Marwin

Standard: 1710 Rapid: 1618 Blitz: 1653 (last updated 2026-10-02)

FIDE ID: 6211771 (view FIDE profile)

Federation: THA Sex: M Birth Year: 2003 Age: 23

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

Games: 11 Wins: 2 (18%) Draws: 3 (27%) Losses: 6 (55%)

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Dossier

11 of 11 games analyzed.

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Openings

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As White 4 games 2W 1D 1L

Caro-Kann Defense 2 games 0W 1D 1L

Exchange Variation 2 games 0W 1D 1L

(unspecified) 2 games 0W 1D 1L

Sicilian Defense 1 game 1W 0D 0L

Four Knights Variation 1 game 1W 0D 0L

Exchange Variation 1 game 1W 0D 0L

Pirc Defense 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

As Black 6 games 0W 2D 4L

Ruy Lopez 2 games 0W 0D 2L

Closed 1 game 0W 0D 1L

Anti-Marshall 1 game 0W 0D 1L

Morphy Defense 1 game 0W 0D 1L

Anderssen Variation 1 game 0W 0D 1L

Italian Game 2 games 0W 1D 1L

Classical Variation 2 games 0W 1D 1L

Giuoco Pianissimo 2 games 0W 1D 1L

Queen's Gambit Declined 1 game 0W 0D 1L

Three Knights Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Four Knights Game 1 game 0W 1D 0L

Spanish Variation 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Blunders Top 4 of 82

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

2023.12.05 · 46. Nxe4 (−47.5% win chance) 0-1

Piyapon Wiwarin

Marwin Kosaisoonthorn

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2023.10.20 · 40. Qh5 (−44.9% win chance) 0-1

Thi Minh Oanh Nguyen

Marwin Kosaisoonthorn

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2023.12.06 · 82... Qa4+ (−38.5% win chance) 1/2-1/2

Marwin Kosaisoonthorn

Darun Kledmanee

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2024.02.26 · 54... g5 (−32.2% win chance) 1-0

Marwin Kosaisoonthorn

Masahiro Baba

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Games Showing all 11 games

Date	Event	Opponent	Result	Accuracy %	First moves
2024.02.26	Round 7: Tinnakrit Arunnuntapanich - Marwin Kosaisoonthorn	2024.02.26 Arunnuntapanich, Tinnakrit (6202039) (2077)	0	86.30%	1. d4 d5 2. c4 e6 3. Nf3 Nf6
2024.02.26	Round 6: Masahiro Baba - Marwin Kosaisoonthorn	2024.02.26 Masahiro Baba (2184)	0	89.40%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2024.02.25	Round 5: Marwin Kosaisoonthorn - Brunel Baron Burbach	2024.02.25 Brunel Baron Burbach (1757)	1	94.40%	1. e4 c5 2. Nf3 e6 3. d4 cxd4
2024.02.25	Round 4: Marwin Kosaisoonthorn - Jeremi Nodon	2024.02.25 Jeremi Nodon (1801)	1	90.00%	1. e4 d6 2. d4 Nf6 3. Nc3 e5
2024.02.24	Round 3: Yulia Babak - Marwin Kosaisoonthorn	2024.02.24 Yulia Babak (1887)	0	85.80%	1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5
2023.12.07	Round 13: Ditsapat Niramitpattanakoson - Marwin Kosaisoonthorn	2023.12.07 Ditsapat Niramitpattanakoson (1645)	½	88.00%	1. e4 e5 2. Nc3 Nf6 3. Bb5 Nc6
2023.12.06	Round 7: Darun Kledmanee - Marwin Kosaisoonthorn	2023.12.06 Darun Kledmanee	½	84.30%	1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5
2023.12.06	Round 5: Marwin Kosaisoonthorn - Phakawan Thasangkha	2023.12.06 Phakawan Thasangkha	½	73.50%	1. e4 c6 2. d4 d5 3. exd5 cxd5
2023.12.05	Round 4: Wanawee Buranasing - Marwin Kosaisoonthorn	2023.12.05 Wanawee Buranasing	0	86.00%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2023.12.05	Round 2: Marwin Kosaisoonthorn - Piyapon Wiwarin	2023.12.05 Piyapon Wiwarin	0	76.50%	1. e4 c6 2. d4 d5 3. exd5 cxd5
2023.10.20	Round 1: Marwin Kosaisoonthorn - Thi Minh Oanh Nguyen	2023.10.20 Thi Minh Oanh Nguyen (1880)	0	86.30%	1. e4 c5 2. Nf3 e6 3. d4 cxd4