KNSB FIDE
HS

Harry Stroosma

Rated since January 2023

1733 Classic
1756 Rapid
1729 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
POSTHUMUS, W. (WIM) 1951
13675 S.V. Erasmus interne competitie 30-03-2026 t/m 20-04-2026 (140014) · Monday 20 April 2026
GEERLINGS, V. (VINCENT) 1912
12501 Interne rapidcompetitie Erasmus Groep A · Monday 27 October 2025
HOEK VAN DIJKE, J. (JAN) 1830
12501 Interne rapidcompetitie Erasmus Groep A · Monday 17 November 2025
BREURKES, R. (RICHARD) 1811
10470 Tata Steel Chess Tournament 2026 Tienkampen · Sunday 1 February 2026
ROSHANIA, J. (JIMMY) 1794
14063 Erasmus Watertorentoernooi Ronde 3 t/m/ 6 · Monday 15 June 2026
Worst losses
BOVENKERK, S.L.P. (SASCHA) 1474
12993 KNSB competitie 2025-2026 Klasse 6 ronde 6 · Saturday 7 February 2026
SCHRIJVERS, C.G.M. (KEES) 1677
13675 S.V. Erasmus interne competitie 30-03-2026 t/m 20-04-2026 (140014) · Monday 30 March 2026
DOEL VAN DEN, F.W.T. (FLORIS) 1697
12501 Interne rapidcompetitie Erasmus Groep A · Monday 17 November 2025
BIJZITTER, A. (ALBERT) 1729
14007 RSB Competitie 2025-2026 Achttallen juni · Friday 29 May 2026
WOLTERS, D.C.P. (DICK) 1751
10470 Tata Steel Chess Tournament 2026 Tienkampen · Wednesday 28 January 2026
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +3–6=0 -29.4
RSB Competitie 2026-2027 Achttallen september Monday 21 September 2026 +0–1=0 -7.7
Erasmus Watertorentoernooi Ronde 7 Monday 11 May 2026 +1–0=0 +6.1
Erasmus Watertorentoernooi Ronde 3 t/m/ 6 Monday 11 May 2026 +2–1=1 +15.5
Erasmus Watertorentoernooi Ronde 1 t/m/ 2 Monday 11 May 2026 +0–1=0 -2.8
S.V. Erasmus interne competitie 30-03-2026 t/m 20-04-2026 (140014) Monday 16 February 2026 +2–1=0 +5.7
S.V. Erasmus interne competitie 16-02-2026 t/m 23-03-2026 (140014) Monday 16 February 2026 +2–1=2 +21.1
Interne rapidcompetitie Erasmus Groep A Monday 27 October 2025 +4–4=0 -7.6
KNSB competitie 2025-2026 Klasse 6 ronde 5 Saturday 20 September 2025 +1–0=0 +11.0
KNSB competitie 2025-2026 Klasse 6 ronde 7 Saturday 20 September 2025 +1–0=0
KNSB competitie 2025-2026 Klasse 6 ronde 6 Saturday 20 September 2025 +0–1=0 -10.5
RSB Competitie 2025-2026 Achttallen juni Monday 1 September 2025 +0–1=0 -12.7
RSB Competitie 2025-2026 Achttallen maart Monday 1 September 2025 +0–2=0 -18.8
RSB Competitie 2025-2026 Achtallen december Monday 1 September 2025 +0–1=0 -8.4

Team Competition

Current teams
CSV 1
Klasse 1A · 2025-2026 · 6 games
CSV 2
Klasse 6K · 2025-2026 · 5 games
Past teams
CSV 1
Hoofdklasse · 2024-2025
CSV 2
Klasse 5J · 2024-2025
CSV 2
Klasse 1B · 2024-2025
CSV 2
Klasse 1B · 2023-2024
CSV 2
Klasse 5I · 2023-2024
CSV 2
Klasse 5H · 2022-2023
CSV 2
Klasse 2A · 2022-2023
Vrij
Klasse 2A · 2022-2023
CSV 2
Klasse 1B · 2021-2022
CSV 2
Klasse 6D · 2021-2022

Rating History

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Peak Ratings

Classic 1784 March 1, 2024
Rapid 1756 Jan. 1, 2026
Blitz 1729 May 1, 2026

Games

Wins 16
Losses 20
Draws 3
Win Rate 41%

Performance by Color

Color Wins Draws Losses Win Rate
White 7 3 11 33%
Black 9 0 9 50%

Recent Matches

Houten van, A.C.J. (Arno) (1883) Monday 21 September 2026 LOSS -7.7
Wild de, F.C. (Fred) (1532) Monday 29 June 2026 WIN +6.1
Koppenens, O.M. (Oscar) (2004) Monday 22 June 2026 LOSS -4.3
Roshania, J. (Jimmy) (1794) Monday 15 June 2026 WIN +14.7
Koelmans, J.W. (Jan Willem) (1855) Monday 8 June 2026 DRAW +4.2
Schaick van, R.M. (Ronald) (1222) Monday 1 June 2026 WIN +0.9
Bijzitter, A. (Albert) (1729) Friday 29 May 2026 LOSS -12.7
Ochtman, H.W. (Henk) (2085) Monday 18 May 2026 LOSS -2.8
Posthumus, W. (Wim) (1951) Monday 20 April 2026 WIN +19.5
Holtkamp, J.H.G. (Jorg) Monday 13 April 2026 WIN
Schrijvers, C.G.M. (Kees) (1677) Monday 30 March 2026 LOSS -13.9
Geerligs, P. (Paul) (1672) Saturday 28 March 2026 WIN +11.0
Planken, P.J. (Paul) (1818) Friday 27 March 2026 LOSS -9.0
Aarnoudse, P. (Peter) (1756) Monday 23 March 2026 WIN +13.9
Klein, W. (Willem) (1736) Monday 16 March 2026 DRAW +0.7
Ruimschoot, P. (Peter) (1533) Monday 9 March 2026 WIN +6.5
Spel, T. (Tom) Saturday 7 March 2026 WIN
Vos, S.J. (Siebren) Monday 2 March 2026 DRAW
Driel van, G.A. (Gert) (1834) Thursday 26 February 2026 LOSS -9.8
Fernandes Coelho Ramos, L.F. (Luciano) Monday 23 February 2026 LOSS