Player profile

Mathijssen, Koen

Standard: 1805 Rapid: 1764 Blitz: 0 (last updated 2026-11-02)

FIDE ID: 40109895 (view FIDE profile)

Federation: NED Sex: M Birth Year: 2009 Age: 17

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

Games: 6 Wins: 2 (33%) Draws: 0 (0%) Losses: 4 (67%)

View all games

Dossier

6 of 6 games analyzed.

View full dossier

Openings

Click "+" to add that group to the games list below. Multiple groups can be added at once.

As White 3 games 1W 0D 2L

Sicilian Defense 1 game 1W 0D 0L

Scheveningen Variation 1 game 1W 0D 0L

English Attack, with f3 1 game 1W 0D 0L

French Defense 1 game 0W 0D 1L

Exchange Variation 1 game 0W 0D 1L

Monte Carlo Variation 1 game 0W 0D 1L

Modern Defense 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

As Black 3 games 1W 0D 2L

King's Gambit Accepted 1 game 0W 0D 1L

Bonsch-Osmolovsky Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Scotch Game 1 game 1W 0D 0L

Classical Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Ruy Lopez 1 game 0W 0D 1L

Marshall Attack 1 game 0W 0D 1L

Modern Variation 1 game 0W 0D 1L

Blunders Top 4 of 40

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

2026.08.03 · 48. Rh5 (−45.9% win chance) 0-1

Vogels, Mathijs

Mathijssen, Koen

Engine View game

2026.08.01 · 26... Re5 (−39.6% win chance) 1-0

Mathijssen, Koen

Rishiadithya Murali

Engine View game

2026.08.03 · 42. Rxd4 (−35% win chance) 0-1

Vogels, Mathijs

Mathijssen, Koen

Engine View game

2026.08.05 · 35... Qd5 (−32.8% win chance) 1-0

Mathijssen, Koen

Hagen, Carlijn

Engine View game

View blunders & mistakes

Games Showing all 6 games

Date	Event	Round	Opponent	Result	Accuracy %	First moves
2026.08.05	Round 9: Hagen, Carlijn - Mathijssen, Koen	9.12	2026.08.05 Hagen, Carlijn (1091190) (1860)	0	79.40%	1. e4 e5 2. f4 exf4 3. Nf3 Ne7
2026.08.04	Round 8: Mathijssen, Koen - Sven Bruls	8.15	2026.08.04 Sven Bruls (9028008)	1	91.80%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.08.04	Round 7: Kevin Wan Ze Gang - Mathijssen, Koen	7.21	2026.08.04 Kevin Wan Ze Gang (8710284)	1	92.60%	1. e4 e5 2. Nf3 Nc6 3. d4 exd4
2026.08.03	Round 6: Mathijssen, Koen - Vogels, Mathijs	6.13	2026.08.03 Vogels, Mathijs (1085824) (1854)	0	73.20%	1. e4 e6 2. d4 d5 3. exd5 exd5
2026.08.01	Round 5: Rishiadithya Murali - Mathijssen, Koen	5.7	2026.08.01 Rishiadithya Murali (33315230) (1932)	0	80.50%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2026.08.01	Round 4: Mathijssen, Koen - Winter, Sven	4.3	2026.08.01 Winter, Sven (1092375) (2071)	0	76.90%	1. e4 g6 2. d4 Bg7 3. Be3 d6