KNSB FIDE
MJ

Marco Jonkheer

Rated since January 2023

1661 Classic
1692 Rapid
1695 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
KREYFELT VON, E.P. (ERNST) 1818
11234 Chessfestival Groningen Seniorentoernooi - · Saturday 27 December 2025
HOEKSTRA, C.A.H. (CARL) 1800
11234 Chessfestival Groningen Seniorentoernooi - · Sunday 28 December 2025
NICOLAI, D. (DUUK) 1752
12552 NOSBO-competitie 2025-2026 ronde 3 Groep A · Friday 28 November 2025
WERFF VAN DER, C. (COR) 1622
12724 S.C. Assen interne competitie 05-12-2025 t/m 19-12-2025 (020001) · Friday 19 December 2025
Worst losses
TILBURGS, M. (MARK) 1636
13989 Nazomervierkampentoernooi 2026 Groep A · Saturday 29 August 2026
HETTINGA, J. (JAAP) 1644
13989 Nazomervierkampentoernooi 2026 Groep A · Friday 28 August 2026
VEEN VAN DER, A. (ANNE) 1753
12993 KNSB competitie 2025-2026 Klasse 6 ronde 6 · Saturday 7 February 2026
JELSMA, R. (REMCO) 1831
13249 KNSB competitie 2025-2026 Klasse 6 ronde 7 · Saturday 7 March 2026
VOORINTHOLT, G.K. (GERARD) 1840
13469 S.C. Assen interne competitie 27-02-2026 t/m 27-03-2026 (020001) · Friday 13 March 2026
Nazomervierkampentoernooi 2026 Groep A Friday 28 August 2026 +0–2=1 -27.2
Chessfestival Groningen Seniorentoernooi - Friday 26 December 2025 +2–3=0 +19.2
S.C. Assen interne competitie 04-09-2026 t/m 25-09-2026 (020001) Friday 4 September 2026 +0–1=0 -7.1
NOSBO-competitie 2025-2026 ronde 3 Groep A Friday 28 November 2025 +1–0=0 +16.6
KNSB competitie 2025-2026 Klasse 6 ronde 7 Saturday 20 September 2025 +0–1=0 -9.0
KNSB competitie 2025-2026 Klasse 6 ronde 6 Saturday 20 September 2025 +0–1=0 -13.0
KNSB competitie 2025-2026 Klasse 6 ronde 4 Saturday 20 September 2025 +0–1=0 -6.9
S.C. Assen interne competitie 27-02-2026 t/m 27-03-2026 (020001) Friday 5 September 2025 +0–1=0 -8.7
S.C. Assen interne competitie 30-01-2026 t/m 13-02-2026 (020001) Friday 5 September 2025 +0–2=0 -13.1
S.C. Assen interne competitie 05-12-2025 t/m 19-12-2025 (020001) Friday 5 September 2025 +1–0=0 +11.4

Team Competition

Current teams
Assen 3
Klasse 6A · 2025-2026 · 4 games
Assen I
Klasse 1B · 2025-2026 · 1 game
Past teams
Assen 3
Klasse 6A · 2024-2025

Rating History

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Peak Ratings

Classic 1739 Feb. 1, 2026
Rapid 1692 Feb. 1, 2025
Blitz 1713 March 1, 2026

Games

Wins 4
Losses 12
Draws 1
Win Rate 24%

Performance by Color

Color Wins Draws Losses Win Rate
White 1 1 6 12%
Black 3 0 6 33%

Recent Matches

Roos, G.J.P.M. (Gerard) (1866) Friday 4 September 2026 LOSS -7.1
Bosma, M. (Maarten) (1773) Saturday 29 August 2026 DRAW +2.8
Tilburgs, M. (Mark) (1636) Saturday 29 August 2026 LOSS -15.1
Hettinga, J. (Jaap) (1644) Friday 28 August 2026 LOSS -14.8
Voorintholt, G.K. (Gerard) (1840) Friday 13 March 2026 LOSS -8.7
Jelsma, R. (Remco) (1831) Saturday 7 March 2026 LOSS -9.0
Faber, A. (Ab) (2031) Friday 13 February 2026 LOSS -4.1
Veen van der, A. (Anne) (1753) Saturday 7 February 2026 LOSS -13.0
Roos, G.J.P.M. (Gerard) (1864) Friday 6 February 2026 LOSS -8.9
Bos van den, F.P. (Frans Pieter) (1849) Tuesday 30 December 2025 LOSS -8.7
Dijkhuizen, K.G. (Klaas) (1990) Monday 29 December 2025 LOSS -4.5
Hoekstra, C.A.H. (Carl) (1800) Sunday 28 December 2025 WIN +18.4
Kreyfelt von, E.P. (Ernst) (1818) Saturday 27 December 2025 WIN +19.1
Lindeman, J.W. (Johan) (1959) Friday 26 December 2025 LOSS -5.2
Werff van der, C. (Cor) (1622) Friday 19 December 2025 WIN +11.4
Boer de, R.E. (Robert) (1901) Saturday 13 December 2025 LOSS -6.9
Nicolai, D. (Duuk) (1752) Friday 28 November 2025 WIN +16.6