KNSB FIDE
JK

Jasper Kools

Rated since January 2023

1936 Classic
1943 Rapid
1963 Blitz

RIVALRY

Nemesis
Plasmans, B.L.P.A. (Bart)
Games: 3 · Win rate: 33%
Kryptonite
Becx, C. (César)
Games: 3 · Win rate: 0%
Easy Target
Demmers, P.J. (Pieter-Jan)
Games: 3 · Win rate: 100%

The good & the bad

Best wins
BRUMMELEN VAN, K.B. (KEVIN) 2184
7838 Amsterdam Chess Open Groep A · Friday 1 November 2024
SCHRÖER, M.J. (MARCEL) 2101
8992 HSG Open 2024 Groep A · Friday 21 June 2024
KURT, S. (SASCHA) 2087
9207 NBSB Competitie 2023/2024 2e helft Groep A · Tuesday 12 March 2024
NIET DE, G.M. (GERT-MICHIEL) 2076
8016 83e Noteboomtoernooi Groep A · Friday 16 February 2024
VRIES DE, L.J.A. (LEON) 2066
7251 49e Open Kampioenschap van Utrecht Groep A · Friday 10 May 2024
Worst losses
BOLDYRIEV, MYKHAILO 1366
Sparkassen Chess Trophy 2023 B-Open · Tuesday 27 June 2023
MUELLER, MARCUS 1566
Sparkassen Chess Trophy 2023 B-Open · Wednesday 28 June 2023
TEPE, T. (THOMAS) 1632
7734 Stukkenjagers Open Groep A · Wednesday 25 October 2023
DHOOGE, S. (SERVAAS) 1691
Wachtebeke Winter Round Robin 2024 Group D · Monday 12 February 2024
KUDERNAC, T. (THEO) 1729
10544 Hoogeveen Schaaktoernooi Middag · Wednesday 22 October 2025
Tata Steel Chess Tournament 2026 Weekendvierkampem Friday 16 January 2026 +3–0=0 +33.7
Hoogeveen Schaaktoernooi Ochtend Saturday 18 October 2025 +4–3=0 -42.3
Hoogeveen Schaaktoernooi Middag Saturday 18 October 2025 +4–3=1 -29.9
27e HZ University of Applied Sciences Schaaktoernooi Groep A Saturday 2 August 2025 +4–4=1 -20.5
Open NK Schaken 2025 Zesrondig 1 Tuesday 22 July 2025 +3–1=2 +32.6
HSG Open 2025 Groep A Friday 20 June 2025 +1–3=1 -12.3
17e BPB Limburg Open 2025 Groep B Friday 6 June 2025 +3–1=3 +15.9
Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +3–2=3 -4.4
Tata Steel Chess Tournament 2025 Weekendvierkampen Friday 17 January 2025 +1–1=1 -6.3
Chess Festival Groningen Open B Saturday 21 December 2024 +3–4=2 -55.5
Amsterdam Chess Open Groep A Friday 1 November 2024 +1–2=3 +18.0
HZ University of Applied Sciences Schaaktoernooi Groep A Saturday 3 August 2024 +5–4=0 +16.1
HSG Open 2024 Groep A Friday 21 June 2024 +1–2=0 +3.5
Tata Steel Chess Tournament 2024 Weekendvierkampen Friday 12 January 2024 +0–1=2 -8.3
HZ University of Applied Sciences Schaaktoernooi Groep A Saturday 5 August 2023 +3–4=2 -7.0
Chessable Open NK 2023 Reserve A Monday 24 July 2023 +2–3=4 +30.8
15e BPB Limburg Open 2023 Groep B Friday 26 May 2023 +2–5=0 -20.9
13e WLC Weekendtoernooi Groep A Friday 5 May 2023 +1–3=2 -9.0
Tata Steel Chess Tournament 2023 Weekendvierkampen Friday 13 January 2023 +0–1=2 -6.6
NBSB Avondcompetitie 2025-2026 Ronde 7 Monday 22 September 2025 +0–2=0 -20.8
NBSB Avondcompetitie 2025-2026 Ronde 6 Monday 22 September 2025 +2–0=0 +11.3
NBSB Avondcompetitie 2025-2026 Ronde 5 Monday 22 September 2025 +0–0=2 -6.6
NBSB Beker A 2025-2026 Ronde 3 Monday 22 September 2025 +0–0=1 +2.9
NBSB Beker A 2025-2026 Ronde 2 Monday 22 September 2025 +0–0=1 +1.3
NBSB Beker A 2025-2026 Groep A Monday 22 September 2025 +1–0=0 +11.6
NBSB Avondcompetitie 2025-2026 Ronde 1 Monday 22 September 2025 +1–0=0 +13.1
KNSB competitie 2025-2026 Klasse 2 ronde 9 Saturday 20 September 2025 +0–1=0 -7.1
KNSB competitie 2025-2026 Klasse 2 ronde 6 Saturday 20 September 2025 +0–0=2 +4.8
KNSB competitie 2025-2026 Klasse 2 ronde 7 Saturday 20 September 2025 +0–1=0 -6.2
KNSB competitie 2025-2026 Klasse 2 Ronde 4 Saturday 20 September 2025 +0–1=0 -8.4
KNSB competitie 2025-2026 Klasse 2 ronde 3 Saturday 20 September 2025 +0–0=1 +3.3
KNSB competitie 2025-2026 Klasse 2 ronde 2 Saturday 20 September 2025 +0–1=0 -3.3
KNSB competitie 2025-2026 Klasse 2 ronde 1 Saturday 20 September 2025 +0–1=0 -9.6
Cocoon 2025 Open Saturday 6 September 2025 +3–5=0 -6.1
Open NK Schaken 2025 Vierkampen Tuesday 22 July 2025 +1–1=0 +0.1
Stukkenjagers Open Ronde 9 Wednesday 9 October 2024 +1–0=0 +8.6
Stukkenjagers Open Ronde 8 Wednesday 9 October 2024 +1–0=0 +7.6
Stukkenjagers Open Ronde 6 & 7 Wednesday 9 October 2024 +0–2=0 -29.8
Stukkenjagers Open Stukkenjagers Open ronde 5 Wednesday 9 October 2024 +1–0=0 +7.4
Stukkenjagers Open Ronde 3 Wednesday 9 October 2024 +0–0=1 -2.5
Stukkenjagers Open Ronde 2 Wednesday 9 October 2024 +1–0=0 +2.4
Stukkenjagers Open Ronde 1 Wednesday 9 October 2024 +0–0=1 -4.7
NBSB Avondcompetitie 2024-2025 Ronde 7 Monday 30 September 2024 +1–0=0 +11.4
NBSB Avondcompetitie 2024-2025 Ronde 6 Monday 30 September 2024 +0–1=0 -6.4
NBSB Avondcompetitie 2024-2025 Ronde 5 Monday 30 September 2024 +0–0=1 -2.6
NBSB Avondcompetitie 2024-2025 Ronde 4 Monday 30 September 2024 +0–1=0 -7.8
NBSB Avondcompetitie 2024-2025 Ronde 3 Monday 30 September 2024 +0–1=0 -13.7
NBSB Avondcompetitie 2024-2025 Ronde 2 Monday 30 September 2024 +1–0=0 +13.2
KNSB competitie 2024-2025 Klasse 4 ronde 5 Saturday 21 September 2024 +1–0=0 +9.5
KNSB competitie 2024-2025 Klasse 4 ronde 4 Saturday 21 September 2024 +1–0=0 +8.2
KNSB competitie 2024-2025 Klasse 4 ronde 3 Saturday 21 September 2024 +1–0=0 +10.3
KNSB competitie 2024-2025 Klasse 4 ronde 2 Saturday 21 September 2024 +0–1=0 -15.0
KNSB competitie 2024-2025 Klasse 4 ronde 1 Saturday 21 September 2024 +0–0=1 -0.7
Snelschaak (tijdens NK 2024) Wednesday 10 July 2024 +7–9=0 -61.7
49e Open Kampioenschap van Utrecht Groep A Friday 10 May 2024 +1–2=3 +21.4
TAPIJTGIGANT OPEN ASK 2024 Groep A Saturday 30 March 2024 +2–3=1 -1.3
83e Noteboomtoernooi Groep A Friday 16 February 2024 +2–2=2 +40.7
Wachtebeke Winter Round Robin 2024 Group D Saturday 10 February 2024 +3–1=5 -18.1
NBSB Competitie 2023/2024 2e helft Groep A Sunday 24 December 2023 +3–1=0 +36.6
Stukkenjagers Open Stukkenjagers Open ronde 9 Wednesday 4 October 2023 +1–0=0 +8.8
Stukkenjagers Open Stukkenjagers Open ronde 8 Wednesday 4 October 2023 +0–0=1 -2.3
Stukkenjagers Open Stukkenjagers Open ronde 7 Wednesday 4 October 2023 +1–0=0 +2.8
Stukkenjagers Open Stukkenjagers Open ronde 6 Wednesday 4 October 2023 +1–0=0 +1.2
Stukkenjagers Open Stukkenjagers Open ronde 5 & 6 Wednesday 4 October 2023 +0–1=0 -18.4
Stukkenjagers Open Stukkenjagers Open ronde 4 Wednesday 4 October 2023 +1–0=0 +7.3
Stukkenjagers Open Stukkenjagers Open ronde 3 Wednesday 4 October 2023 +1–0=0 +5.7
Stukkenjagers Open Groep A Wednesday 4 October 2023 +0–2=0 -20.8
KNSB competitie 2023-2024 Klasse 4 ronde 8 Saturday 16 September 2023 +0–1=0 -7.3
KNSB competitie 2023-2024 Klasse 4 ronde 6 Saturday 16 September 2023 +1–0=0 +5.7
KNSB competitie 2023-2024 Klasse 4 ronde 5 Saturday 16 September 2023 +1–0=0 +15.0
KNSB competitie 2023-2024 Klasse 4 ronde 4 Saturday 16 September 2023 +1–0=0 +12.3
KNSB competitie 2023-2024 Klasse 4 ronde 3 Saturday 16 September 2023 +0–0=1 +0.4
KNSB competitie 2023-2024 Klasse 4 ronde 2 Saturday 16 September 2023 +1–0=0 +14.9
KNSB competitie 2023-2024 Klasse 4 ronde 1 Saturday 16 September 2023 +1–0=0 +12.4
NBSB competitie 2023/2024 Groep A Friday 1 September 2023 +3–0=0 +32.7
Goirles Weekend Kampioenschap 2023 Groep B Friday 25 August 2023 +4–0=2 +39.3
Sparkassen Chess Trophy 2023 B-Open Saturday 24 June 2023 +4–2=1 -35.2
TAPIJTGIGANT OPEN ASK 2023 Groep B Friday 24 March 2023 +1–1=4 -16.6
NBSB competitie 2023 Groep A Sunday 1 January 2023 +1–1=1 -3.6
Stukkenjagers Open Ronde 7 t/m 9 Wednesday 12 October 2022 +0–1=1 -9.7
Stukkenjagers Open Ronde 4 t/m 6 Wednesday 12 October 2022 +2–1=0 +7.5
Stukkenjagers Open Groep A Wednesday 12 October 2022 +2–0=1 +14.4
KNSB competitie 2022-2023 Klasse 4 ronde 9 Saturday 17 September 2022 +0–0=1 -4.1
KNSB competitie 2022-2023 Klasse 4 ronde 8 Saturday 17 September 2022 +0–1=0 -9.2
KNSB competitie 2022-2023 Klasse 4 ronde 7 Saturday 17 September 2022 +0–1=0 -10.4
KNSB competitie 2022-2023 Klasse 4 ronde 4 Saturday 17 September 2022 +1–0=0 +10.3
NBSB Competitie Groep A Wednesday 14 September 2022 +3–1=0 +12.8

Rating History

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Peak Ratings

Classic 2054 Dec. 1, 2024
Rapid 1949 March 1, 2026
Blitz 1963 Oct. 1, 2024

Games

Wins 110
Losses 97
Draws 64
Win Rate 41%

Performance by Color

Color Wins Draws Losses Win Rate
White 58 37 44 42%
Black 52 27 53 39%

Recent Matches

Schleipfenbauer, B. (Bent) (2106) Saturday 11 April 2026 LOSS -7.1
Vries de, F. (Fabian) (2019) Saturday 28 March 2026 DRAW +2.4
Vries de, F. (Fabian) (2019) Saturday 28 March 2026 DRAW +2.4
Kroot, A.J.L. (Ad) (2010) Thursday 19 March 2026 LOSS -10.4
Kroot, A.J.L. (Ad) (2010) Thursday 19 March 2026 LOSS -10.4
Demmers, P.J. (Pieter-Jan) (1741) Tuesday 24 February 2026 WIN +5.7
Demmers, P.J. (Pieter-Jan) (1741) Tuesday 24 February 2026 WIN +5.7
Cnossen, W.W. (Wiebe) (2149) Saturday 7 February 2026 LOSS -6.2
Hopman-Been, R. (Rob) (1859) Friday 6 February 2026 DRAW -3.3
Hopman-Been, R. (Rob) (1859) Friday 6 February 2026 DRAW -3.3
Bodemeijer, R. (Reinier) (1871) Sunday 18 January 2026 WIN +10.9
Brand, B.J.L.M. (Berry) (1842) Saturday 17 January 2026 WIN +9.9
Aldenberg, H. (Hendrik) (1930) Friday 16 January 2026 WIN +12.9
Meurs van, R. (Rob) (2002) Saturday 20 December 2025 DRAW +2.9
Manders, R. (Robbie) (2043) Saturday 22 November 2025 LOSS -8.4
Matthijssen, M. (Mitchell) (1959) Saturday 8 November 2025 DRAW +1.3
Put van de, J.W.P. (Jeroen) (2017) Saturday 1 November 2025 DRAW +3.3
Kolijn, S. (Simon) (1618) Saturday 25 October 2025 WIN +2.6
Wit de, J. (Jim) (1829) Saturday 25 October 2025 WIN +7.5
Heeren van, A. (Arie) (1747) Friday 24 October 2025 WIN +5.2