KNSB FIDE
SK

Sarah-Joy Koorevaar

Rated since January 2023

1774 Classic
1759 Rapid
1750 Blitz

RIVALRY

Nemesis
Dankers, H.A.P. (Henk)
Games: 4 · Win rate: 50%
Kryptonite
Westerhof, F. (Fleur)
Games: 6 · Win rate: 0%
Easy Target
Ganeshram, N. (Niranjana)
Games: 4 · Win rate: 100%

The good & the bad

Best wins
SCHERPENISSE, C. (KEES) 1963
12409 KNSB competitie 2025-2026 Klasse 4 Ronde 4 · Saturday 22 November 2025
GIELEN, W. (WIM) 1904
11706 Open NK Schaken 2025 Reserve A · Wednesday 23 July 2025
FAVEREY, E.S. (EDDY) 1885
11290 S.C. Woerden interne competitie 06-05-2025 t/m 13-05-2025 (060067) · Tuesday 6 May 2025
KNAAP VAN DER, J. (JAN) 1883
13528 KNSB competitie 2025-2026 Klasse 4 ronde 9 · Saturday 11 April 2026
SNIJDERS, F. (FRANS) 1876
10780 27e HZ University of Applied Sciences Schaaktoernooi Groep A · Thursday 7 August 2025
Worst losses
HARDEMAN, I. (IMARA) 845
6593 NJK kwalificatietoernooi 3 Groep C meisjes · Saturday 18 February 2023
LI, Y. (YUHONG) 964
6465 PJK RSB E en voorronde ABC 2023 Voorronde ABC · Saturday 21 January 2023
PONNAIYA, L. (LAVANAN) 1037
6465 PJK RSB E en voorronde ABC 2023 Voorronde ABC · Saturday 21 January 2023
HAGEN, S.C. (CARLIJN) 1089
6385 Kwalificatie 2 NK ABC BC Meisjes · Saturday 7 January 2023
VELDE VAN DE, M. (MATTHIJS) 1117
6465 PJK RSB E en voorronde ABC 2023 Voorronde ABC · Saturday 21 January 2023
27e HZ University of Applied Sciences Schaaktoernooi Groep A Saturday 2 August 2025 +3–3=3 +38.1
Open NK Schaken 2025 Reserve A Tuesday 22 July 2025 +2–5=2 -39.7
Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +4–3=2 +34.1
Hoogeveen Schaaktoernooi Amateur Middag Saturday 26 October 2024 +2–3=4 -19.5
Kwalificatie 4 NK ABC Groep A Saturday 14 March 2026 +2–10=0 -49.3
S.C. Woerden interne competitie 27-01-2026 t/m 27-01-2026 (060067) Tuesday 27 January 2026 +5–4=1 -31.9
Kwalificatie 1 NK ABC Groep B Saturday 29 November 2025 +2–2=3 -14.3
Deutsche Jugend-Laendermeisterschaft 2025 Wednesday 1 October 2025 +0–4=3 -76.0
KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +1–0=0 +26.7
KNSB competitie 2025-2026 Klasse 4 ronde 6 Saturday 20 September 2025 +0–0=2 +15.9
KNSB competitie 2025-2026 Klasse 4 ronde 8 Saturday 20 September 2025 +2–0=0 +44.5
KNSB competitie 2025-2026 Klasse 4 ronde 7 Saturday 20 September 2025 +0–1=0 -3.7
KNSB competitie 2025-2026 Klasse 4 ronde 5 Saturday 20 September 2025 +0–0=1 +12.6
KNSB competitie 2025-2026 Klasse 4 Ronde 4 Saturday 20 September 2025 +1–0=0 +26.2
KNSB competitie 2025-2026 Klasse 4 ronde 3 Saturday 20 September 2025 +0–1=0 -15.2
KNSB competitie 2025-2026 Klasse 4 ronde 1 Saturday 20 September 2025 +0–1=0 -13.9
S.C. Woerden interne competitie 31-03-2026 t/m 21-04-2026 (060067) Tuesday 9 September 2025 +0–1=0 -11.3
S.C. Woerden interne competitie 03-02-2026 t/m 24-03-2026 (060067) Tuesday 9 September 2025 +4–6=0 -47.5
S.C. Woerden interne competitie 02-12-2025 t/m 16-12-2025 (060067) Tuesday 9 September 2025 +1–1=1 +18.8
S.C. Woerden interne competitie 28-10-2025 t/m 25-11-2025 (060067) Tuesday 9 September 2025 +1–2=0 -20.6
S.C. Woerden interne competitie 30-09-2025 t/m 14-10-2025 (060067) Tuesday 9 September 2025 +1–0=1 +28.4
S.C. Woerden interne competitie 09-09-2025 t/m 23-09-2025 (060067) Tuesday 9 September 2025 +2–1=0 -1.6
OKW 2025 Groep A Tuesday 20 May 2025 +1–1=4 +0.2
NJSK B Meisjes Saturday 26 April 2025 +3–2=1 +11.7
Kwalificatie NK ABC 4 Groep B Saturday 15 March 2025 +2–3=2 -54.7
Kwalificatie NK ABC 2 Groep B Saturday 4 January 2025 +1–2=3 -18.1
Kwalificatie 1 NK ABC Groep B Saturday 30 November 2024 +2–3=2 -12.1
16e Kattenburger Open Toernooi ko16 r7 Sunday 6 October 2024 +1–0=0 +10.5
16e Kattenburger Open Toernooi ko16 r6 Sunday 6 October 2024 +1–0=0 +7.4
16e Kattenburger Open Toernooi ko16 r5 Sunday 6 October 2024 +0–1=0 -29.9
16e Kattenburger Open Toernooi Groep A Sunday 6 October 2024 +0–0=1 +7.6
16e Kattenburger Open Toernooi ko16 r1 Sunday 6 October 2024 +0–0=1 +11.0
KNSB competitie 2024-2025 Klasse 5 ronde 7 Saturday 21 September 2024 +1–0=0 +24.6
KNSB competitie 2024-2025 Klasse 6 ronde 6 Saturday 21 September 2024 +1–0=0 +18.2
KNSB competitie 2024-2025 Klasse 6 ronde 4 Saturday 21 September 2024 +1–0=0 +16.2
KNSB competitie 2024-2025 Klasse 6 ronde 3 Saturday 21 September 2024 +0–0=1 +1.7
KNSB competitie 2024-2025 Klasse 6 ronde 2 Saturday 21 September 2024 +1–0=0 +13.6
KNSB competitie 2024-2025 Klasse 6 ronde 1 Saturday 21 September 2024 +0–0=1 +5.1
SOS Competitie 2024/2025 2024-12 Sunday 1 September 2024 +0–0=1 -8.0
SOS Competitie 2024/2025 2024-11 Sunday 1 September 2024 +0–1=0 -12.6
SOS Competitie 2024/2025 2024-10 Sunday 1 September 2024 +1–0=0 +19.3
S.C. Woerden interne competitie 06-05-2025 t/m 13-05-2025 (060067) Saturday 10 August 2024 +1–0=0 +25.1
S.C. Woerden interne competitie 01-04-2025 t/m 15-04-2025 (060067) Saturday 10 August 2024 +0–3=0 -21.2
S.C. Woerden interne competitie 04-03-2025 t/m 25-03-2025 (060067) Saturday 10 August 2024 +2–0=0 +28.0
S.C. Woerden interne competitie 04-02-2025 t/m 18-02-2025 (060067) Saturday 10 August 2024 +0–1=1 -18.7
S.C. Woerden interne competitie 07-01-2025 t/m 21-01-2025 (060067) Saturday 10 August 2024 +1–1=0 +8.0
S.C. Woerden interne competitie 26-11-2024 t/m 17-12-2024 (060067) Saturday 10 August 2024 +1–1=1 -0.6
S.C. Woerden interne competitie 05-11-2024 t/m 19-11-2024 (060067) Saturday 10 August 2024 +1–0=2 +28.5
S.C. Woerden interne competitie 10-09-2024 t/m 22-10-2024 (060067) Saturday 10 August 2024 +3–2=1 +11.3
ONJK 2024 Groep C Friday 2 August 2024 +8–2=8 +148.3
16e Open Kampioenschap van Woerden Groep A Tuesday 21 May 2024 +4–4=6 +64.4
NJSK Meisjes C Saturday 27 April 2024 +8–4=2 +37.9
Kwalificatie NK ABC 4 B Jeugd Saturday 9 March 2024 +2–4=1 -42.1
Kwalificatie NK ABC 3 Meisjes B Saturday 10 February 2024 +3–1=2 +37.5
Kwalificatie NK ABC 2 Groep B Jeugd en meisjes Friday 5 January 2024 +1–2=4 +69.7
Kwalificatie 1 NK ABC C meisjes Saturday 18 November 2023 +6–1=0 +6.1
HSB GP 2 Botwinnik Groep A Sunday 12 November 2023 +1–3=0 -27.5
GP Pionnetjes 2023 Groep A Sunday 29 October 2023 +0–2=1 -30.3
HSB GP 1 SHTV Ochtend groep Saturday 14 October 2023 +2–1=0 +20.9
OJKP 2023 Groep A Saturday 7 October 2023 +1–1=1 -2.7
SGS Jeugdclubcompetitie 2023-2024 2023-12 Sunday 1 October 2023 +0–1=0 -13.4
Het 2e 'Woerdy schaakt Open Jeugdtoernooi' Groep A Saturday 3 June 2023 +3–3=1 +12.2
NJSK C meiden Friday 21 April 2023 +4–6=2 -123.0
HSB GP 6 Haeghe Ooievaar Groep A Sunday 16 April 2023 +2–0=1 +34.7
NJK kwalificatietoernooi 3 Groep C meisjes Saturday 18 February 2023 +3–2=1 -12.0
PJK RSB E en voorronde ABC 2023 Voorronde ABC Saturday 21 January 2023 +3–4=0 -0.3
Kwalificatie 2 NK ABC BC Meisjes Saturday 7 January 2023 +4–2=1 +90.0
Groene Hart Jeugd Cup Speelavond 5 Friday 7 October 2022 +1–2=0 -24.1
Groene Hart Jeugd Cup Speelavond 3 Friday 7 October 2022 +3–0=0 +11.6
NJSK ABC NJSK 2022 Meisjes C Sunday 1 May 2022 +2–4=1 +43.3

Rating History

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Peak Ratings

Classic 1850 Nov. 1, 2025
Rapid 1759 Sept. 1, 2024
Blitz 1750 Feb. 1, 2026

Games

Wins 119
Losses 118
Draws 77
Win Rate 38%

Performance by Color

Color Wins Draws Losses Win Rate
White 73 39 48 46%
Black 46 38 70 30%

Recent Matches

Verberne, B. (Bas) (1923) Tuesday 21 April 2026 LOSS -11.3
Knaap van der, J. (Jan) (1883) Saturday 11 April 2026 WIN +26.7
Beijer, A.J. (Bram) (1926) Saturday 28 March 2026 DRAW +8.0
Beijer, A.J. (Bram) (1926) Saturday 28 March 2026 DRAW +8.0
Oort van, M. (Marcel) (1915) Tuesday 24 March 2026 LOSS -12.6
Oort van, M. (Marcel) (1915) Tuesday 24 March 2026 LOSS -12.6
Dankers, H.A.P. (Henk) (1687) Tuesday 17 March 2026 WIN +15.1
Dankers, H.A.P. (Henk) (1687) Tuesday 17 March 2026 WIN +15.1
Shah, S.P. (Shrey) (1955) Sunday 15 March 2026 LOSS -10.7
Blok, X. (Xaveer) (1947) Sunday 15 March 2026 LOSS -11.0
Luong, A. (Thao) (1752) Sunday 15 March 2026 WIN +18.6
Shah, S.P. (Shrey) (1955) Sunday 15 March 2026 LOSS -10.7
Blok, X. (Xaveer) (1947) Sunday 15 March 2026 LOSS -11.0
Luong, A. (Thao) (1752) Sunday 15 March 2026 WIN +18.6
Darie, A.C. (Aden) (2124) Saturday 14 March 2026 LOSS -4.5
Xu, A. (Alex Z) (1985) Saturday 14 March 2026 LOSS -9.3
Kate ten, G. (Gustav) (2024) Saturday 14 March 2026 LOSS -7.8
Darie, A.C. (Aden) (2124) Saturday 14 March 2026 LOSS -4.5
Xu, A. (Alex Z) (1985) Saturday 14 March 2026 LOSS -9.3
Kate ten, G. (Gustav) (2024) Saturday 14 March 2026 LOSS -7.8