KNSB FIDE
JG

Jan Joris Groenewold

Rated since January 2023

2042 Classic
2033 Rapid
2009 Blitz

Team Competition

Current team
LOS 1
Klasse 2A · 2025-2026 · 5 games
Past teams
LOS
Open Beker · 2024-2025
1 game
LOS 1
Klasse 2A · 2024-2025
5 games
LOS
Beker Open · 2023-2024
1 game
LOS 1
Klasse 2A · 2023-2024
4 games
LOS 1
Klasse 2A · 2022-2023
6 games
LOS 1
Klasse 2A · 2021-2022
6 games

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
LEENES, R.E. (ROBERT) 2023
11850 KNSB competitie 2025-2026 Klasse 2 ronde 1 · Saturday 20 September 2025
POELSTRA, B.M. (BEN) 2009
7638 KNSB competitie 2023-2024 Klasse 2 ronde 2 · Saturday 7 October 2023
VELD VAN 'T, M. (MENNO) 1998
7818 Chess Festival Groningen Compact A · Wednesday 27 December 2023
LINDE VAN DE, J.A. (JAN) 1997
12591 KNSB competitie 2025-2026 Klasse 2 ronde 5 · Saturday 13 December 2025
PELLIKAAN, G.B. (GOVERT) 1981
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
Worst losses
ETIENNE, G. (GHILON) 1944
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
SCHEFFER, E.F. (ENNO) 1954
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
DAM TEN, B. (BRAM) 1962
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
ONSELEN VAN, P.R.G. (PAUL) 1996
12407 KNSB competitie 2025-2026 Klasse 2 Ronde 4 · Saturday 22 November 2025
OORD, R. (RAYMON) 2011
7818 Chess Festival Groningen Compact A · Thursday 28 December 2023
Chess Festival Groningen Compact A Thursday 21 December 2023 +2–1=1 +3.9
NOSBO Beker 2025-2026 Kwartfinale Groep A Thursday 15 January 2026 +0–1=0 -6.8
KNSB competitie 2025-2026 Klasse 2 ronde 9 Saturday 20 September 2025 +1–0=0 +9.2
KNSB competitie 2025-2026 Klasse 2 ronde 8 Saturday 20 September 2025 +0–1=0 -9.3
KNSB competitie 2025-2026 Klasse 2 ronde 5 Saturday 20 September 2025 +1–0=0 +11.1
KNSB competitie 2025-2026 Klasse 2 Ronde 4 Saturday 20 September 2025 +0–1=0 -14.4
KNSB competitie 2025-2026 Klasse 2 ronde 1 Saturday 20 September 2025 +1–0=0 +11.9
NOSBO competitie 2024-2025 April 2025 Saturday 1 March 2025 +0–0=1 +6.8
KNSB competitie 2024-2025 Klasse 2 ronde 7 Saturday 21 September 2024 +0–1=0 -5.2
KNSB competitie 2024-2025 Klasse 2 ronde 6 Saturday 21 September 2024 +0–0=1 -2.1
KNSB competitie 2024-2025 KNSB Beker ronde 3 voor februarilijst Saturday 21 September 2024 +0–1=0 -7.8
KNSB competitie 2024-2025 Klasse 2 ronde 5 Saturday 21 September 2024 +0–1=0 -10.7
KNSB competitie 2024-2025 Klasse 2 ronde 4 Saturday 21 September 2024 +0–1=0 -12.0
KNSB competitie 2024-2025 Klasse 2 ronde 1 Saturday 21 September 2024 +1–0=0 +4.9
NOSBO snelschaaktoernooi teams 2024 Saturday 14 September 2024 +5–8=0 -56.8
NOSBO-competitie 2023-2024 Februari 2024 Sunday 1 October 2023 +1–0=0 +6.9
KNSB competitie 2023-2024 Klasse 2 ronde 8 Saturday 16 September 2023 +0–0=1 -0.8
KNSB competitie 2023-2024 KNSB Beker 2023-2024 ronde 3 Saturday 16 September 2023 +1–0=0 +9.1
KNSB competitie 2023-2024 Klasse 2 ronde 6 Saturday 16 September 2023 +0–1=0 -13.8
KNSB competitie 2023-2024 Klasse 2 ronde 3 Saturday 16 September 2023 +1–0=0 +8.8
KNSB competitie 2023-2024 Klasse 2 ronde 2 Saturday 16 September 2023 +1–0=0 +11.4
KNSB competitie 2022-2023 Klasse 2 ronde 9 Saturday 17 September 2022 +0–1=0 -5.7
KNSB competitie 2022-2023 Klasse 2 ronde 7 Saturday 17 September 2022 +0–0=1 -0.6
KNSB competitie 2022-2023 Klasse 2 ronde 6 Saturday 17 September 2022 +1–0=0 +8.6
KNSB competitie 2022-2023 Beker ronde 3 Saturday 17 September 2022 +0–1=0 -11.1

Rating History

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Peak Ratings

Classic 2071 Oct. 1, 2024
Rapid 2049 March 1, 2026
Blitz 2009 Oct. 1, 2024

Games

Wins 16
Losses 19
Draws 5
Win Rate 40%

Performance by Color

Color Wins Draws Losses Win Rate
White 7 4 11 32%
Black 9 1 8 50%

Recent Matches

Drent, S. (Sjoerd) (1938) Saturday 11 April 2026 WIN +9.2
Dwarshuis, J.H. (Arjan) (2143) Saturday 7 March 2026 LOSS -9.3
Bakker, J.M. (Jouke) (2224) Thursday 15 January 2026 LOSS -6.8
Linde van de, J.A. (Jan) (1997) Saturday 13 December 2025 WIN +11.1
Onselen van, P.R.G. (Paul) (1996) Saturday 22 November 2025 LOSS -14.4
Leenes, R.E. (Robert) (2023) Saturday 20 September 2025 WIN +11.9
Bakker, J.M. (Jouke) (2244) Friday 4 April 2025 DRAW +6.8
IM Jong de, M. (Migchiel) (2270) Saturday 8 March 2025 LOSS -5.2
Brouwer, T. (Timon) (1980) Saturday 8 February 2025 DRAW -2.1
Kamphuis, J. (Jasper) (2188) Thursday 9 January 2025 LOSS -7.8
Zwirs, J.B. (Jasper) (2110) Saturday 14 December 2024 LOSS -10.7
Berkhout, S. (Sander) (2086) Saturday 23 November 2024 LOSS -12.0
Adema, M.E. (Marrit) (1823) Saturday 21 September 2024 WIN +4.9
Hagen, S.C. (Carlijn) (1809) Saturday 14 September 2024 WIN +4.6
Etienne, G. (Ghilon) (1944) Saturday 14 September 2024 LOSS -8.3
Lucchesu, G.D. (Gianluca) (1672) Saturday 14 September 2024 WIN +2.1
Koster, A.J. (Dries) (2038) Saturday 14 September 2024 LOSS -13.5
Keessen, A.J. (Aldert-Jan) (2108) Saturday 14 September 2024 LOSS -11.0
Reitsma, F. (Freerk) (1779) Saturday 14 September 2024 WIN +3.9
Scheffer, E.F. (Enno) (1954) Saturday 14 September 2024 LOSS -16.3