KNSB FIDE
SE

Siem van Eijk

Rated since January 2023

1783 Classic

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
HOOP DE, S. (SIPKE) 1974
12660 K.S.C. Philidor 1847 interne competitie 27-10-2025 t/m 22-12-2025 (0… · Monday 17 November 2025
KONING, F.M. (FEMKE) 1865
12992 KNSB competitie 2025-2026 Klasse 5 ronde 6 · Saturday 7 February 2026
KRAMER, P. (PETER) 1859
12022 FSB-competitie 2025-2026 ronde 5 2e klasse · Monday 9 February 2026
RIS, G.J.R. (GERT-JAN) 1739
13248 KNSB competitie 2025-2026 Klasse 5 ronde 7 · Saturday 7 March 2026
BOSMA, P.G. (PIETER) 1707
12660 K.S.C. Philidor 1847 interne competitie 27-10-2025 t/m 22-12-2025 (0… · Monday 8 December 2025
Worst losses
PLOEGER, P. (PIETER) 1606
13370 K.S.C. Philidor 1847 interne competitie 23-02-2026 t/m 22-04-2026 (0… · Tuesday 24 March 2026
KEIZER, B.G. (BERNARD) 1747
12014 FSB-competitie 2025-2026 ronde 3 2e klasse · Monday 24 November 2025
HIEMSTRA, T. (TOMAS) 1804
13315 KNSB competitie 2025-2026 Klasse 5 ronde 5 · Saturday 28 March 2026
GROENEVELD, J. (HENRY) 1842
12594 KNSB competitie 2025-2026 Klasse 5 ronde 4 · Saturday 13 December 2025
KOOI VAN DER, A. (AAT) 1852
11836 FSB-competitie 2025-2026 ronde 1 2e klasse · Monday 6 October 2025
Fries Kampioenschap 60+ Groep A Tuesday 3 February 2026 +0–1=5 +13.2
K.S.C. Philidor 1847 interne competitie 23-02-2026 t/m 22-04-2026 (0… Sunday 22 February 2026 +1–2=1 -22.4
KNSB competitie 2025-2026 Klasse 5 ronde 5 Saturday 20 September 2025 +0–1=0 -13.0
KNSB competitie 2025-2026 Klasse 5 ronde 7 Saturday 20 September 2025 +1–0=0 +9.8
KNSB competitie 2025-2026 Klasse 5 ronde 6 Saturday 20 September 2025 +1–0=0 +15.7
KNSB competitie 2025-2026 Klasse 5 ronde 4 Saturday 20 September 2025 +0–1=0 -10.1
KNSB competitie 2025-2026 Klasse 5 Ronde 3 Saturday 20 September 2025 +0–0=1 +0.9
KNSB competitie 2025-2026 Klasse 5 ronde 2 Saturday 20 September 2025 +0–1=0 -8.1
KNSB competitie 2025-2026 Klasse 5 ronde 1 Saturday 20 September 2025 +0–0=1 +1.7
K.S.C. Philidor 1847 interne competitie 12-01-2026 t/m 19-01-2026 (0… Monday 8 September 2025 +0–1=0 -1.0
K.S.C. Philidor 1847 interne competitie 27-10-2025 t/m 22-12-2025 (0… Monday 8 September 2025 +3–0=0 +35.4
K.S.C. Philidor 1847 interne competitie 29-09-2025 t/m 20-10-2025 (0… Monday 8 September 2025 +0–1=0 -3.5
K.S.C. Philidor 1847 interne competitie 08-09-2025 t/m 22-09-2025 (0… Monday 8 September 2025 +2–1=0 +14.9
FSB-competitie 2025-2026 ronde 6 2e klasse Monday 1 September 2025 +0–1=0 -9.2
FSB-competitie 2025-2026 ronde 5 2e klasse Monday 1 September 2025 +1–0=0 +15.5
FSB-competitie 2025-2026 ronde 4 2e klasse Monday 1 September 2025 +0–1=0 -9.4
FSB-competitie 2025-2026 ronde 3 2e klasse Monday 1 September 2025 +0–1=0 -13.4
FSB-competitie 2025-2026 ronde 2 2e klasse Monday 1 September 2025 +0–0=1 +4.7
FSB-competitie 2025-2026 ronde 1 2e klasse Monday 1 September 2025 +0–1=0 -10.2
K.S.C. Philidor 1847 interne competitie 04-03-2025 t/m 20-05-2025 (0… Monday 3 March 2025 +3–3=1 -5.1

Rating History

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Peak Ratings

Classic 1817 March 1, 2026
Rapid 1817 March 1, 2026
Blitz 1817 March 1, 2026

Games

Wins 12
Losses 16
Draws 10
Win Rate 32%

Performance by Color

Color Wins Draws Losses Win Rate
White 7 6 6 37%
Black 5 4 10 26%

Recent Matches

Hiemstra, T. (Tomas) (1804) Saturday 28 March 2026 LOSS -13.0
Tuinstra, T. (Thijs) (1914) Friday 27 March 2026 LOSS -9.2
Ploeger, P. (Pieter) (1606) Tuesday 24 March 2026 LOSS -19.3
Dijkhoff, R. (Richard) (1561) Monday 9 March 2026 WIN +4.6
Ris, G.J.R. (Gert-Jan) (1739) Saturday 7 March 2026 WIN +9.8
Botter, S. (Simon) (2044) Tuesday 3 March 2026 LOSS -5.3
Botter, J. (Joachim) (1702) Monday 23 February 2026 DRAW -2.5
Schuurmans, F.W.L. (Frank) (1871) Friday 20 February 2026 LOSS -9.1
Wassenaar, J.M. (Meine) (1787) Wednesday 18 February 2026 DRAW +0.5
Dzaferspahic, Z. (Zahid) (1869) Monday 16 February 2026 DRAW +3.3
Korver de, P. (Peter) (2037) Thursday 12 February 2026 DRAW +8.1
Siblesz, J.T. (Tjeerd) (1925) Wednesday 11 February 2026 DRAW +5.1
Kramer, P. (Peter) (1859) Monday 9 February 2026 WIN +15.5
Koning, F.M. (Femke) (1865) Saturday 7 February 2026 WIN +15.7
FM Etmans, M.D. (Maarten) (1938) Friday 6 February 2026 DRAW +5.5
IM Jong de, M. (Migchiel) (2281) Monday 19 January 2026 LOSS -1.0
Eisses, J. (Jornt) (1863) Monday 15 December 2025 LOSS -9.4
Groeneveld, J. (Henry) (1842) Saturday 13 December 2025 LOSS -10.1
Bosma, P.G. (Pieter) (1707) Monday 8 December 2025 WIN +10.3
Keizer, B.G. (Bernard) (1747) Monday 24 November 2025 LOSS -13.4