KNSB FIDE
AH

Arjen van Herwaarden

Rated since January 2023

1991 Classic
2000 Rapid
2000 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
GEERTS, A.C. (ALEXANDER) 2104
6553 KNSB competitie 2022-2023 Klasse 1 ronde 6 · Saturday 11 February 2023
KOSSEN, J. (JOHANNES) 2008
6729 KNSB competitie 2022-2023 Klasse 1 ronde 7 · Saturday 11 March 2023
JOOSTEN, P.S.G. (PAUL) 1935
11993 KNSB competitie 2025-2026 Klasse 4 ronde 2 · Saturday 4 October 2025
Worst losses
BOOGAART VAN DEN, J.M.C. (JAN MAARTEN) 2020
13528 KNSB competitie 2025-2026 Klasse 4 ronde 9 · Saturday 11 April 2026
VERHOEVEN, R. (ROBIN) 2061
8069 KNSB competitie 2023-2024 Klasse 1 ronde 5 · Saturday 16 December 2023
WILGENHOF, O. (OTTO) 2120
8569 KNSB competitie 2023-2024 Klasse 1 ronde 7 · Saturday 2 March 2024
AMMERLAAN, R. (RICHARD) 2123
9947 KNSB competitie 2024-2025 Klasse 1 ronde 4 · Saturday 23 November 2024
CROESE, C. (COR) 2130
6165 KNSB competitie 2022-2023 Klasse 1 ronde 4 · Saturday 26 November 2022
No FIDE-rated tournaments found.
KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +0–1=0 -11.9
KNSB competitie 2025-2026 Klasse 4 ronde 6 Saturday 20 September 2025 +0–0=1 -3.3
KNSB competitie 2025-2026 Klasse 4 ronde 8 Saturday 20 September 2025 +0–0=1 -3.5
KNSB competitie 2025-2026 Klasse 4 ronde 2 Saturday 20 September 2025 +1–0=0 +10.3
KNSB competitie 2024-2025 Klasse 1 ronde 4 Saturday 21 September 2024 +0–1=0 -8.6
KNSB competitie 2024-2025 Klasse 1 ronde 2 Saturday 21 September 2024 +0–1=0 -4.4
KNSB competitie 2023-2024 Klasse 1 ronde 9 Saturday 16 September 2023 +0–1=0 -6.5
KNSB competitie 2023-2024 Klasse 1 ronde 8 Saturday 16 September 2023 +0–0=1 +8.2
KNSB competitie 2023-2024 Klasse 1 ronde 7 Saturday 16 September 2023 +0–1=0 -9.1
KNSB competitie 2023-2024 Klasse 1 ronde 6 Saturday 16 September 2023 +0–0=1 -2.0
KNSB competitie 2023-2024 Klasse 1 ronde 5 Saturday 16 September 2023 +0–1=0 -11.6
KNSB competitie 2023-2024 Klasse 1 ronde 3 Saturday 16 September 2023 +0–0=1 +6.3
KNSB competitie 2023-2024 Klasse 1 ronde 2 Saturday 16 September 2023 +0–0=1 -5.7
KNSB competitie 2023-2024 Klasse 1 ronde 1 Saturday 16 September 2023 +0–1=0 -7.4
KNSB competitie 2022-2023 Klasse 1 ronde 8 Saturday 17 September 2022 +0–1=0 -8.0
KNSB competitie 2022-2023 Klasse 1 ronde 7 Saturday 17 September 2022 +1–0=0 +11.4
KNSB competitie 2022-2023 Klasse 1 ronde 6 Saturday 17 September 2022 +1–0=0 +15.3
KNSB competitie 2022-2023 Klasse 1 ronde 5 Saturday 17 September 2022 +0–0=1 -3.7
KNSB competitie 2022-2023 Klasse 1 ronde 4 Saturday 17 September 2022 +0–1=0 -9.4

Rating History

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Peak Ratings

Classic 2050 April 1, 2023
Rapid 2000 March 1, 2026
Blitz 2000 March 1, 2026

Games

Wins 3
Losses 9
Draws 7
Win Rate 16%

Performance by Color

Color Wins Draws Losses Win Rate
White 3 4 6 23%
Black 0 3 3 0%

Recent Matches

Boogaart van den, J.M.C. (Jan Maarten) (2020) Saturday 11 April 2026 LOSS -11.9
Dijksterhuis, R. (Rolf) (1914) Saturday 28 March 2026 DRAW -3.3
Kruistum van, H. (Henri) (1909) Saturday 7 March 2026 DRAW -3.5
Joosten, P.S.G. (Paul) (1935) Saturday 4 October 2025 WIN +10.3
Ammerlaan, R. (Richard) (2123) Saturday 23 November 2024 LOSS -8.6
FM Hintze, H. (Helge) (2281) Saturday 12 October 2024 LOSS -4.4
CM Rijn van, A.B. (Anton) (2203) Saturday 20 April 2024 LOSS -6.5
FM Odendahl, R. (Reiner) (2292) Saturday 23 March 2024 DRAW +8.2
Wilgenhof, O. (Otto) (2120) Saturday 2 March 2024 LOSS -9.1
Visscher, H. (Harmen) (1965) Saturday 3 February 2024 DRAW -2.0
Verhoeven, R. (Robin) (2061) Saturday 16 December 2023 LOSS -11.6
CM Visser, H.C.J. (Henk-Jan) (2225) Saturday 4 November 2023 DRAW +6.3
Klooster, J. (Jim) (1863) Saturday 7 October 2023 DRAW -5.7
Werksma, A. (Arie) (2195) Saturday 16 September 2023 LOSS -7.4
FM Duijn, R.R.M. (Richard) (2185) Saturday 1 April 2023 LOSS -8.0
Kossen, J. (Johannes) (2008) Saturday 11 March 2023 WIN +11.4
Geerts, A.C. (Alexander) (2104) Saturday 11 February 2023 WIN +15.3
Brandsma, R.L. (Romayn) (1930) Saturday 17 December 2022 DRAW -3.7
Croese, C. (Cor) (2130) Saturday 26 November 2022 LOSS -9.4