KNSB FIDE
WK

Wim Koster

Rated since January 2023

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
HENNINK, E. (ERIK) 2093
9698 RSB Competitie 2024-2025 8-tallen oktober · Monday 21 October 2024
VERSCHOOR, S. (SCOTT) 2049
13446 RSB Competitie 2025-2026 Achttallen maart · Monday 23 March 2026
BRANDT, B. (BENJAMIN) 2003
10409 KNSB competitie 2024-2025 KNSB Beker ronde 3 voor februarilijst · Thursday 9 January 2025
MAST VAN DER, D. (DAVID) 1983
11910 RSB Competitie 2025-2026 Achttallen september · Tuesday 23 September 2025
TOOR VAN, C.F. (KEES) 1904
9100 RSB Competitie 2023-2024 8-tallen mei · Friday 24 May 2024
Worst losses
VERMEER, M. (MARK) 2071
9953 RSB Competitie 2024-2025 Beker ronde 1 · Saturday 9 November 2024
OUDEN VAN DEN, L.J.F. (LENDERT) 2076
6837 RSB Competitie 2022-2023 8-tallen april · Friday 24 March 2023
SCHOUTEN, J.A.J. (JORDY) 2212
11019 KNSB competitie 2024-2025 Klasse 2 ronde 8 · Saturday 5 April 2025
No FIDE-rated tournaments found.
KNSB competitie 2025-2026 Klasse 3 ronde 9 Saturday 20 September 2025 +0–0=1 -0.3
RSB Competitie 2025-2026 Achttallen maart Monday 1 September 2025 +1–0=0 +9.4
RSB Competitie 2025-2026 Achtallen december Monday 1 September 2025 +0–0=1 -0.1
RSB Competitie 2025-2026 Achttallen september Monday 1 September 2025 +1–0=0 +7.7
KNSB competitie 2024-2025 Klasse 2 ronde 8 Saturday 21 September 2024 +0–1=0 -9.1
KNSB competitie 2024-2025 KNSB Beker ronde 3 voor februarilijst Saturday 21 September 2024 +1–0=0 +8.0
RSB Competitie 2024-2025 8-tallen februari Sunday 1 September 2024 +0–0=1 -6.8
RSB Competitie 2024-2025 Beker ronde 1 Sunday 1 September 2024 +0–1=0 -13.7
RSB Competitie 2024-2025 8-tallen oktober Sunday 1 September 2024 +1–0=0 +10.7
KNSB competitie 2023-2024 Klasse 3 ronde 8 Saturday 16 September 2023 +1–0=0 +4.0
RSB Competitie 2023-2024 8-tallen mei Friday 1 September 2023 +1–0=0 +5.3
RSB Competitie 2023-2024 8-tallen december Friday 1 September 2023 +0–0=1 -2.3
KNSB competitie 2022-2023 Klasse 3 ronde 5 Saturday 17 September 2022 +1–0=0 +1.0
RSB Competitie 2022-2023 8-tallen april Thursday 1 September 2022 +0–1=0 -13.5

Rating History

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Peak Ratings

Classic 2139 Nov. 1, 2024
Rapid 2134 May 1, 2026
Blitz 2134 May 1, 2026

Games

Wins 7
Losses 3
Draws 4
Win Rate 50%

Performance by Color

Color Wins Draws Losses Win Rate
White 2 3 0 40%
Black 5 1 3 56%

Recent Matches

Mijnster, C.M. (Niels) (2125) Saturday 11 April 2026 DRAW -0.3
Verschoor, S. (Scott) (2049) Monday 23 March 2026 WIN +9.4
Both, E. (Erik) (2123) Thursday 4 December 2025 DRAW -0.1
Mast van der, D. (David) (1983) Tuesday 23 September 2025 WIN +7.7
Schouten, J.A.J. (Jordy) (2212) Saturday 5 April 2025 LOSS -9.1
Koopman, R.P.E. (Richard) (1902) Friday 14 February 2025 DRAW -6.8
Brandt, B. (Benjamin) (2003) Thursday 9 January 2025 WIN +8.0
Vermeer, M. (Mark) (2071) Saturday 9 November 2024 LOSS -13.7
Hennink, E. (Erik) (2093) Monday 21 October 2024 WIN +10.7
Toor van, C.F. (Kees) (1904) Friday 24 May 2024 WIN +5.3
Feijter de, D.C. (David) (1840) Saturday 23 March 2024 WIN +4.0
WIM Derksen-Harmsen, J.M.M. (Jessica) (2052) Friday 1 December 2023 DRAW -2.3
Ouden van den, L.J.F. (Lendert) (2076) Friday 24 March 2023 LOSS -13.5
Groenheijde, J.W. (Wim) (1649) Saturday 17 December 2022 WIN +1.0