KNSB FIDE
SP

Sjaak Piest

Rated since January 2023

1923 Classic
1923 Rapid

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
ELLENBROEK, A.J. (TON) 2059
13051 PK van SBO en afdeling Oost PK2026A1-2 · 2026-02-14
KRUIMER, M. (MATTHIAS) 1988
7964 SBO Viertallencompetitie 2023/2024 November 2023 · 2023-11-16
KNOL, N.T. (NOAH) 1899
11022 KNSB competitie 2024-2025 Klasse 5 ronde 7 · 2025-04-05
KLUIJFHOUT, A.A. (ANTHON) 1895
13248 KNSB competitie 2025-2026 Klasse 5 ronde 7 · 2026-03-07
QUILLIGAN, D. (DAVID) 1894
8895 SOS Competitie 2023/2024 Juni 2024 · 2024-05-31
Worst losses
EILLERT, H. (HENK) 1672
6557 KNSB competitie 2022-2023 Klasse 5 ronde 5 · 2023-02-11
ROL, A. (ART) 1727
7967 SBO Viertallencompetitie 2023/2024 Ronde 3 B, Ronde 4 (A, B deels, C-G),... · 2024-02-27
HOOGHIEMSTRA, J.L. (JOOST) 1753
8374 KNSB competitie 2023-2024 Klasse 5 ronde 5 · 2024-02-03
CAPEL, R.C. (ROBERT) 1852
9647 SOS Competitie 2024/2025 2024-10 · 2024-10-08
SCHUURMANS, J.P.M. (HAN) 1867
5834 SBO Viertallencompetitie 2022/2023 Mei 2023 · 2023-04-25
No FIDE-rated tournaments found.
PK van SBO en afdeling Oost PK2026A3-6 Sat, Feb 14, 2026 +0–1=2 -1.5
PK van SBO en afdeling Oost PK2026A1-2 Sat, Feb 14, 2026 +1–0=1 +26.4
SBO Viertallencompetitie 2025/2026 Lijst Maart Wed, Oct 1, 2025 +0–1=1 -16.9
SBO Viertallencompetitie 2025/2026 Ronde 1 (deels A), Ronde 2 (B-G) Wed, Oct 1, 2025 +0–1=0 -1.0
KNSB competitie 2025-2026 Klasse 5 ronde 5 Sat, Sep 20, 2025 +1–0=0 +8.3
KNSB competitie 2025-2026 Klasse 5 ronde 7 Sat, Sep 20, 2025 +1–0=0 +12.1
KNSB competitie 2025-2026 Klasse 5 ronde 6 Sat, Sep 20, 2025 +1–0=0 +12.3
KNSB competitie 2025-2026 Klasse 5 ronde 4 Sat, Sep 20, 2025 +0–0=1 +1.5
KNSB competitie 2025-2026 Klasse 5 Ronde 3 Sat, Sep 20, 2025 +0–0=1 -0.9
KNSB competitie 2025-2026 Klasse 5 ronde 2 Sat, Sep 20, 2025 +0–0=1 -2.0
KNSB competitie 2025-2026 Klasse 5 ronde 1 Sat, Sep 20, 2025 +0–0=1 -0.3
SOS competitie 2025/2026 Lijst 1 apr Mon, Sep 1, 2025 +0–0=1 -4.2
SOS competitie 2025/2026 Lijst 1 mrt Mon, Sep 1, 2025 +1–0=0 +8.2
SOS competitie 2025/2026 Lijst 1 feb Mon, Sep 1, 2025 +0–1=0 -9.4
SOS competitie 2025/2026 Lijst 1 Dec Mon, Sep 1, 2025 +1–0=0 +4.9
SOS competitie 2025/2026 Lijst 1 Nov Mon, Sep 1, 2025 +1–0=0 +9.1
SBO Viertallencompetitie 2024/2025 Ronde 5 (D, E, F) en Ronde 6 (A, … Tue, Oct 1, 2024 +0–0=1 -0.2
SBO Viertallencompetitie 2024/2025 Ronde 5 (A-C, D/E deels, G) Ronde… Tue, Oct 1, 2024 +0–1=0 -9.9
SBO Viertallencompetitie 2024/2025 Ronde 3 (F deels), Ronde 4 (A-E, … Tue, Oct 1, 2024 +0–1=0 -7.1
SBO Viertallencompetitie 2024/2025 Ronde 1 (B, F deels) en Ronde 2 (A deel… Tue, Oct 1, 2024 +0–0=2 +3.4
KNSB competitie 2024-2025 Klasse 5 ronde 7 Sat, Sep 21, 2024 +1–0=0 +13.9
KNSB competitie 2024-2025 Klasse 5 ronde 6 Sat, Sep 21, 2024 +1–0=0 +12.2
KNSB competitie 2024-2025 Klasse 5 ronde 5 Sat, Sep 21, 2024 +0–0=1 +0.7
KNSB competitie 2024-2025 Klasse 5 ronde 4 Sat, Sep 21, 2024 +0–1=0 -12.2
KNSB competitie 2024-2025 Klasse 5 ronde 3 Sat, Sep 21, 2024 +0–0=1 +0.1
KNSB competitie 2024-2025 Klasse 5 ronde 2 Sat, Sep 21, 2024 +1–0=0 +11.5
KNSB competitie 2024-2025 Klasse 5 ronde 1 Sat, Sep 21, 2024 +0–1=0 -10.7
SOS Competitie 2024/2025 2025-05 Sun, Sep 1, 2024 +0–0=1 +2.3
SOS Competitie 2024/2025 2025-03 Sun, Sep 1, 2024 +0–0=1 +4.5
SOS Competitie 2024/2025 2025-01 Sun, Sep 1, 2024 +0–1=0 -9.7
SOS Competitie 2024/2025 2024-10 Sun, Sep 1, 2024 +1–1=0 -6.1
SBO Viertallencompetitie 2023/2024 Ronde 4 (B), Ronde 5 (A, B deels, C-G... Mon, Oct 16, 2023 +0–1=1 -7.5
SBO Viertallencompetitie 2023/2024 Ronde 3 B, Ronde 4 (A, B deels, C-G),... Mon, Oct 16, 2023 +0–1=0 -15.9
SBO Viertallencompetitie 2023/2024 Januari 2024 Mon, Oct 16, 2023 +0–0=1 +5.7
SBO Viertallencompetitie 2023/2024 November 2023 Mon, Oct 16, 2023 +1–0=0 +17.8
KNSB competitie 2023-2024 Klasse 3 ronde 7 Sat, Sep 16, 2023 +0–1=0 -11.3
KNSB competitie 2023-2024 Klasse 5 ronde 5 Sat, Sep 16, 2023 +0–1=0 -15.0
KNSB competitie 2023-2024 Klasse 5 ronde 4 Sat, Sep 16, 2023 +0–1=0 -10.2
KNSB competitie 2023-2024 Klasse 5 ronde 3 Sat, Sep 16, 2023 +0–1=0 -9.5
KNSB competitie 2023-2024 Klasse 5 ronde 1 Sat, Sep 16, 2023 +1–0=0 +4.5
SOS Competitie 2023/2024 Juni 2024 Fri, Sep 1, 2023 +1–0=0 +13.4
SOS Competitie 2023/2024 April 2024 Fri, Sep 1, 2023 +1–0=0 +5.6
SOS Competitie 2023/2024 Maart 2024 Fri, Sep 1, 2023 +1–0=0 +8.2
SOS Competitie 2023/2024 Februari 2024 Fri, Sep 1, 2023 +1–0=0 +6.7
SOS Competitie 2023/2024 Januari 2024 Fri, Sep 1, 2023 +0–0=1 -0.2
SOS Competitie 2023/2024 December 2023 Fri, Sep 1, 2023 +0–0=1 -5.5
SOS Competitie 2023/2024 November 2023 Fri, Sep 1, 2023 +0–0=1 -1.8
SOS Competitie 2023/2024 Oktober 2023 Fri, Sep 1, 2023 +1–0=0 +11.4
SOS Competitie 2023/2024 September 2023 Fri, Sep 1, 2023 +1–0=0 +5.9
SBO Cup 2022/2023 Halve Finale Sun, Nov 27, 2022 +0–0=1 -7.1
SBO Cup 2022/2023 Kwartfinale Sun, Nov 27, 2022 +1–0=0 +8.8
SBO Viertallencompetitie 2022/2023 Mei 2023 Mon, Oct 24, 2022 +0–1=0 -10.4
SBO Viertallencompetitie 2022/2023 Februari 2023 Mon, Oct 24, 2022 +0–1=1 -15.5
KNSB competitie 2022-2023 Klasse 5 ronde 7 Sat, Sep 17, 2022 +1–0=0 +7.5
KNSB competitie 2022-2023 Klasse 5 ronde 6 Sat, Sep 17, 2022 +1–0=0 +3.9
KNSB competitie 2022-2023 Klasse 5 ronde 5 Sat, Sep 17, 2022 +0–1=0 -17.7
KNSB competitie 2022-2023 Klasse 5 ronde 4 Sat, Sep 17, 2022 +1–0=0 +7.7
KNSB competitie 2022-2023 Klasse 5 ronde 3 Sat, Sep 17, 2022 +0–0=1 -5.6
SOS Competitie 2022/2023 Mei Mon, Sep 12, 2022 +1–0=0 +4.2
SOS Competitie 2022/2023 Maart 2023(K1) Mon, Sep 12, 2022 +1–0=0 +8.4
SOS Competitie 2022/2023 Februari 2023 Mon, Sep 12, 2022 +0–0=1 -2.9
SOS Competitie 2022/2023 Januari 2023 Mon, Sep 12, 2022 +0–1=0 -6.0
SOS Competitie 2022/2023 December 2022 Mon, Sep 12, 2022 +0–0=1 -1.3

Rating History

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Peak Ratings

Classic 1923 April 1, 2026
Rapid 1908 March 1, 2026
Blitz 1923 April 1, 2026

Games

Wins 25
Losses 20
Draws 26
Win Rate 35%

Performance by Color

Color Wins Draws Losses Win Rate
White 12 11 10 36%
Black 13 15 10 34%

Recent Matches

Muller, J. (Jos) (1784) 2026-03-28 WIN +8.3
Lujan Garcia, R. (Rogelio) (2050) 2026-03-22 DRAW +4.8
Rademaker, M. (Matthijs) (1971) 2026-03-22 LOSS -10.3
Muller, J. (Jos) (1784) 2026-03-17 DRAW -4.2
Kluijfhout, A.A. (Anthon) (1895) 2026-03-07 WIN +12.1
Vries de, F. (Fabian) (1998) 2026-02-28 DRAW +4.1
Eikenaar, E. (Erik) (1548) 2026-02-17 DRAW -9.4
Ellenbroek, A.J. (Ton) (2059) 2026-02-14 WIN +18.4
Monsma, M. (Menno) (2139) 2026-02-14 DRAW +8.0
Hamhuis, J. (Jasper) (1873) 2026-02-07 WIN +12.3
Tol van der, J.H. (Henk) (1752) 2026-02-05 WIN +8.2
Husers, Y.G.M. (Yannic) (2036) 2026-01-30 LOSS -7.5
Fallaux, S. (Storm) (1978) 2026-01-20 LOSS -9.4
Knol, N.T. (Noah) (1930) 2025-12-13 DRAW +1.5
IM Kroeze, F.M. (Frank) (2383) 2025-12-02 LOSS -1.0
Boerrigter, S.H.W. (Stan) (1859) 2025-11-22 DRAW -0.9
Rijkhoek, H. (Harro) (1639) 2025-11-03 WIN +4.9
Goede de, H.P. (Hans) (1825) 2025-11-01 DRAW -2.0
Beersum van, T.W. (Theo) (1777) 2025-10-07 WIN +9.1
Dijk van, H. (Henk) (1866) 2025-10-04 DRAW -0.3