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CK

CM Chiel Koster

FIDE 1047990 ↗·Born 1998

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Classical

World #7,650

2211

Blitz

World #13,073

2015

Active-player world ranks · Official FIDE July 2026 lists

Recent Tournaments

Result from Chiel Koster's perspective

17th BPB Limburg Open 2025 | Open logo

17th BPB Limburg Open 2025 | Open

2 games
0.5/2
Score
0W · 1D · 1L
WLC Weekend Tournament 2025 | Group A logo

WLC Weekend Tournament 2025 | Group A

3 games
2.5/3
Score
2W · 1D · 0L
Dutch Open Championship 2024 logo

Dutch Open Championship 2024

9 games
4.5/9
Score
2W · 5D · 2L

Opening Repertoire

All colors · ChessEver game database

B33

Sicilian

W 2D 4L 17 games

57%

score

B01

Scandinavian (centre counter) defence

W 3D 0L 14 games

75%

score

B90

Sicilian

W 2D 3L 16 games

58%

score

B10

Caro-Kann defence

W 0D 1L 23 games

17%

score

A25

English

W 1D 1L 02 games

75%

score

A29

English

W 1D 1L 02 games

75%

score

B20

Sicilian defence

W 2D 1L 03 games

83%

score

B30

Sicilian defence

W 1D 0L 12 games

50%

score