KNSB FIDE
WK

Willem Kuiper

Rated since March 2026

1859 Rapid
1798 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
NOLLES, D.S. (DIRK SIEDS) 1971
13689 FK Snelschaak 2026 Groep A · Friday 24 April 2026
ZUIDBERG, K. (KOEN) 1892
10472 Tata Steel Chess Tournament 2026 Dagvierkampen · Tuesday 20 January 2026
BLAESER, T. (THYS) 1880
13297 FK Rapid voor teams - · Saturday 21 March 2026
KONING, P. (PETER) 1873
13689 FK Snelschaak 2026 Groep A · Friday 24 April 2026
KREULEN, R. (ROEL) 1841
13689 FK Snelschaak 2026 Groep A · Friday 24 April 2026
Worst losses
GORTER, H. (HIELKE) 1795
10482 2e Open Rapidkampioenschap van Sneek - · Saturday 17 January 2026
SANTIFORT, J. (JAAP) 1817
13446 RSB Competitie 2025-2026 Achttallen maart · Thursday 26 February 2026
KOOI VAN DER, A. (AAT) 1843
13297 FK Rapid voor teams - · Saturday 21 March 2026
CLITEUR, O.P. (OLAF) 1848
12032 FSB-competitie 2025-2026 Beker ronde 2 · Tuesday 13 January 2026
VIERSMA, M. (MURK) 1867
13689 FK Snelschaak 2026 Groep A · Friday 24 April 2026
Fries Kampioenschap 60+ Groep A Tuesday 3 February 2026 +3–2=2 +20.2
Tata Steel Chess Tournament 2026 Dagvierkampen Friday 16 January 2026 +1–2=0 -2.7
FK Snelschaak 2026 Groep A Friday 24 April 2026 +6–4=1 +56.4
FK Rapid voor teams - Saturday 21 March 2026 +5–1=1 +35.0
2e Open Rapidkampioenschap van Sneek - Saturday 17 January 2026 +2–3=2 +5.1
KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +1–0=0 +10.3
KNSB competitie 2025-2026 Klasse 4 ronde 8 Saturday 20 September 2025 +1–0=0 +7.9
RSB Competitie 2025-2026 Achttallen april Monday 1 September 2025 +0–0=1 -0.5
FSB-competitie 2025-2026 ronde 7 1e klasse Monday 1 September 2025 +0–0=1 +1.7
RSB Competitie 2025-2026 Achttallen maart Monday 1 September 2025 +1–1=0 +0.9
RSB Competitie 2025-2026 Beker ronde 3 Monday 1 September 2025 +0–0=1 +5.4
FSB-competitie 2025-2026 Beker ronde 2 Monday 1 September 2025 +0–1=0 -11.0

Rating History

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Peak Ratings

Classic 1825 April 1, 2026
Rapid 1859 April 1, 2026
Blitz 1742 March 1, 2026

Games

Wins 20
Losses 14
Draws 9
Win Rate 47%

Performance by Color

Color Wins Draws Losses Win Rate
White 13 3 5 62%
Black 7 6 9 32%

Recent Matches

Meirink, J. (Johan) (1900) Friday 24 April 2026 DRAW +5.3
Meijer, D. (Daniël) (1786) Friday 24 April 2026 WIN +14.0
Koning, P. (Peter) (1873) Friday 24 April 2026 WIN +16.9
Viersma, M. (Murk) (1867) Friday 24 April 2026 LOSS -8.3
Oppenhuizen, W.G. (Wiebe) (1623) Friday 24 April 2026 WIN +8.5
Abma, K. (Klaas) (1881) Friday 24 April 2026 LOSS -7.8
Bavel van, F. (Ferdi) (2007) Friday 24 April 2026 LOSS -4.4
Nolles, D.S. (Dirk Sieds) (1971) Friday 24 April 2026 WIN +19.7
Kreulen, R. (Roel) (1841) Friday 24 April 2026 WIN +15.9
Cnossen, H.F. (Hinke Fiona) (1333) Friday 24 April 2026 WIN +1.9
Hibma, J. (Jan) (1971) Friday 24 April 2026 LOSS -5.3
Schoolenberg, C. (Kees) (1812) Thursday 23 April 2026 DRAW -0.5
Koning, P. (Peter) (1873) Thursday 16 April 2026 DRAW +1.7
Ven van de, J. (Jolanda) (1762) Saturday 11 April 2026 WIN +10.3
Blommestein van, F.A.V. (Victor) (1816) Tuesday 24 March 2026 WIN +12.5
Aartsma, J. (Jan) (1631) Saturday 21 March 2026 WIN +6.2
Vries de, B. (Bart) (1464) Saturday 21 March 2026 WIN +2.6
Wit de, J. (Jim) (1905) Saturday 21 March 2026 DRAW +2.8
Blaeser, T. (Thys) (1880) Saturday 21 March 2026 WIN +14.4
Oppenhuizen, W.G. (Wiebe) (1715) Saturday 21 March 2026 WIN +8.8