KNSB FIDE
SP

Sjaak Piest

Rated since January 2023

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 · Saturday 14 February 2026
KRUIMER, M. (MATTHIAS) 1988
7964 SBO Viertallencompetitie 2023/2024 November 2023 · Thursday 16 November 2023
KNOL, N.T. (NOAH) 1899
11022 KNSB competitie 2024-2025 Klasse 5 ronde 7 · Saturday 5 April 2025
KLUIJFHOUT, A.A. (ANTHON) 1895
13248 KNSB competitie 2025-2026 Klasse 5 ronde 7 · Saturday 7 March 2026
QUILLIGAN, D. (DAVID) 1894
8895 SOS Competitie 2023/2024 Juni 2024 · Friday 31 May 2024
Worst losses
EILLERT, H. (HENK) 1672
6557 KNSB competitie 2022-2023 Klasse 5 ronde 5 · Saturday 11 February 2023
ROL, A. (ART) 1727
7967 SBO Viertallencompetitie 2023/2024 Ronde 3 B, Ronde 4 (A, B deels, C-G),... · Tuesday 27 February 2024
HOOGHIEMSTRA, J.L. (JOOST) 1753
8374 KNSB competitie 2023-2024 Klasse 5 ronde 5 · Saturday 3 February 2024
CAPEL, R.C. (ROBERT) 1852
9647 SOS Competitie 2024/2025 2024-10 · Tuesday 8 October 2024
SCHUURMANS, J.P.M. (HAN) 1867
5834 SBO Viertallencompetitie 2022/2023 Mei 2023 · Tuesday 25 April 2023
No FIDE-rated tournaments found.
PK van SBO en afdeling Oost PK2026A3-6 Saturday 14 February 2026 +0–1=2 -1.5
PK van SBO en afdeling Oost PK2026A1-2 Saturday 14 February 2026 +1–0=1 +26.4
SBO Viertallencompetitie 2025/2026 Lijst Mei Wednesday 1 October 2025 +0–1=0 -9.1
SBO Viertallencompetitie 2025/2026 Lijst Maart Wednesday 1 October 2025 +0–1=1 -16.9
SBO Viertallencompetitie 2025/2026 Ronde 1 (deels A), Ronde 2 (B-G) Wednesday 1 October 2025 +0–1=0 -1.0
KNSB competitie 2025-2026 Klasse 5 ronde 5 Saturday 20 September 2025 +1–0=0 +8.3
KNSB competitie 2025-2026 Klasse 5 ronde 7 Saturday 20 September 2025 +1–0=0 +12.1
KNSB competitie 2025-2026 Klasse 5 ronde 6 Saturday 20 September 2025 +1–0=0 +12.3
KNSB competitie 2025-2026 Klasse 5 ronde 4 Saturday 20 September 2025 +0–0=1 +1.5
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 +0–0=1 -2.0
KNSB competitie 2025-2026 Klasse 5 ronde 1 Saturday 20 September 2025 +0–0=1 -0.3
SOS competitie 2025/2026 Lijst 1 juni Monday 1 September 2025 +1–0=0 +5.4
SOS competitie 2025/2026 Lijst 1 apr Monday 1 September 2025 +0–0=1 -4.2
SOS competitie 2025/2026 Lijst 1 mrt Monday 1 September 2025 +1–0=0 +8.2
SOS competitie 2025/2026 Lijst 1 feb Monday 1 September 2025 +0–1=0 -9.4
SOS competitie 2025/2026 Lijst 1 Dec Monday 1 September 2025 +1–0=0 +4.9
SOS competitie 2025/2026 Lijst 1 Nov Monday 1 September 2025 +1–0=0 +9.1
SBO Viertallencompetitie 2024/2025 Ronde 5 (D, E, F) en Ronde 6 (A, … Tuesday 1 October 2024 +0–0=1 -0.2
SBO Viertallencompetitie 2024/2025 Ronde 5 (A-C, D/E deels, G) Ronde… Tuesday 1 October 2024 +0–1=0 -9.9
SBO Viertallencompetitie 2024/2025 Ronde 3 (F deels), Ronde 4 (A-E, … Tuesday 1 October 2024 +0–1=0 -7.1
SBO Viertallencompetitie 2024/2025 Ronde 1 (B, F deels) en Ronde 2 (A deel… Tuesday 1 October 2024 +0–0=2 +3.4
KNSB competitie 2024-2025 Klasse 5 ronde 7 Saturday 21 September 2024 +1–0=0 +13.9
KNSB competitie 2024-2025 Klasse 5 ronde 6 Saturday 21 September 2024 +1–0=0 +12.2
KNSB competitie 2024-2025 Klasse 5 ronde 5 Saturday 21 September 2024 +0–0=1 +0.7
KNSB competitie 2024-2025 Klasse 5 ronde 4 Saturday 21 September 2024 +0–1=0 -12.2
KNSB competitie 2024-2025 Klasse 5 ronde 3 Saturday 21 September 2024 +0–0=1 +0.1
KNSB competitie 2024-2025 Klasse 5 ronde 2 Saturday 21 September 2024 +1–0=0 +11.5
KNSB competitie 2024-2025 Klasse 5 ronde 1 Saturday 21 September 2024 +0–1=0 -10.7
SOS Competitie 2024/2025 2025-05 Sunday 1 September 2024 +0–0=1 +2.3
SOS Competitie 2024/2025 2025-03 Sunday 1 September 2024 +0–0=1 +4.5
SOS Competitie 2024/2025 2025-01 Sunday 1 September 2024 +0–1=0 -9.7
SOS Competitie 2024/2025 2024-10 Sunday 1 September 2024 +1–1=0 -6.1
SBO Viertallencompetitie 2023/2024 Ronde 4 (B), Ronde 5 (A, B deels, C-G... Monday 16 October 2023 +0–1=1 -7.5
SBO Viertallencompetitie 2023/2024 Ronde 3 B, Ronde 4 (A, B deels, C-G),... Monday 16 October 2023 +0–1=0 -15.9
SBO Viertallencompetitie 2023/2024 Januari 2024 Monday 16 October 2023 +0–0=1 +5.7
SBO Viertallencompetitie 2023/2024 November 2023 Monday 16 October 2023 +1–0=0 +17.8
KNSB competitie 2023-2024 Klasse 3 ronde 7 Saturday 16 September 2023 +0–1=0 -11.3
KNSB competitie 2023-2024 Klasse 5 ronde 5 Saturday 16 September 2023 +0–1=0 -15.0
KNSB competitie 2023-2024 Klasse 5 ronde 4 Saturday 16 September 2023 +0–1=0 -10.2
KNSB competitie 2023-2024 Klasse 5 ronde 3 Saturday 16 September 2023 +0–1=0 -9.5
KNSB competitie 2023-2024 Klasse 5 ronde 1 Saturday 16 September 2023 +1–0=0 +4.5
SOS Competitie 2023/2024 Juni 2024 Friday 1 September 2023 +1–0=0 +13.4
SOS Competitie 2023/2024 April 2024 Friday 1 September 2023 +1–0=0 +5.6
SOS Competitie 2023/2024 Maart 2024 Friday 1 September 2023 +1–0=0 +8.2
SOS Competitie 2023/2024 Februari 2024 Friday 1 September 2023 +1–0=0 +6.7
SOS Competitie 2023/2024 Januari 2024 Friday 1 September 2023 +0–0=1 -0.2
SOS Competitie 2023/2024 December 2023 Friday 1 September 2023 +0–0=1 -5.5
SOS Competitie 2023/2024 November 2023 Friday 1 September 2023 +0–0=1 -1.8
SOS Competitie 2023/2024 Oktober 2023 Friday 1 September 2023 +1–0=0 +11.4
SOS Competitie 2023/2024 September 2023 Friday 1 September 2023 +1–0=0 +5.9
SBO Cup 2022/2023 Halve Finale Sunday 27 November 2022 +0–0=1 -7.1
SBO Cup 2022/2023 Kwartfinale Sunday 27 November 2022 +1–0=0 +8.8
SBO Viertallencompetitie 2022/2023 Mei 2023 Monday 24 October 2022 +0–1=0 -10.4
SBO Viertallencompetitie 2022/2023 Februari 2023 Monday 24 October 2022 +0–1=1 -15.5
KNSB competitie 2022-2023 Klasse 5 ronde 7 Saturday 17 September 2022 +1–0=0 +7.5
KNSB competitie 2022-2023 Klasse 5 ronde 6 Saturday 17 September 2022 +1–0=0 +3.9
KNSB competitie 2022-2023 Klasse 5 ronde 5 Saturday 17 September 2022 +0–1=0 -17.7
KNSB competitie 2022-2023 Klasse 5 ronde 4 Saturday 17 September 2022 +1–0=0 +7.7
KNSB competitie 2022-2023 Klasse 5 ronde 3 Saturday 17 September 2022 +0–0=1 -5.6
SOS Competitie 2022/2023 Mei Monday 12 September 2022 +1–0=0 +4.2
SOS Competitie 2022/2023 Maart 2023(K1) Monday 12 September 2022 +1–0=0 +8.4
SOS Competitie 2022/2023 Februari 2023 Monday 12 September 2022 +0–0=1 -2.9
SOS Competitie 2022/2023 Januari 2023 Monday 12 September 2022 +0–1=0 -6.0
SOS Competitie 2022/2023 December 2022 Monday 12 September 2022 +0–0=1 -1.3

Team Competition

Current teams
Max Euwe 2
A · 2025-2026 · 4 games
SG Max Euwe 2
3B · 2025-2026 · 6 games
SG Max Euwe 4
Klasse 5B · 2025-2026 · 7 games
Past teams
Max Euwe 1
HKA · 2024-2025
Max Euwe 2
B · 2024-2025
SG Max Euwe 4
Klasse 5B · 2024-2025
Max Euwe 2
B · 2023-2024
SG Max Euwe 1
1A · 2023-2024
SG Max Euwe 3
Klasse 3B · 2023-2024
SG Max Euwe 4
Klasse 5C · 2023-2024
Max Euwe 1
1A · 2022-2023
Max Euwe 1
A · 2022-2023
SG Max Euwe 4
Klasse 5B · 2022-2023
Max Euwe 1
A · 2021-2022
SG Max Euwe 1
1A · 2021-2022
SG Max Euwe 1
Klasse 1A · 2021-2022
SG Max Euwe 3
Klasse 3A · 2021-2022
SG Max Euwe 1
1E · 2019-2020

Rating History

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Peak Ratings

Classic 1923 April 1, 2026
Rapid 1923 May 1, 2026
Blitz 1923 April 1, 2026

Games

Wins 26
Losses 21
Draws 26
Win Rate 36%

Performance by Color

Color Wins Draws Losses Win Rate
White 13 11 10 38%
Black 13 15 11 33%

Recent Matches

Geurink, G.J.W. (Willem) (1688) Friday 8 May 2026 WIN +5.4
Horst ter, C.T.H. (Carsten) (2023) Tuesday 21 April 2026 LOSS -9.1
Muller, J. (Jos) (1784) Saturday 28 March 2026 WIN +8.3
Lujan Garcia, R. (Rogelio) (2050) Sunday 22 March 2026 DRAW +4.8
Rademaker, M. (Matthijs) (1971) Sunday 22 March 2026 LOSS -10.3
Muller, J. (Jos) (1784) Tuesday 17 March 2026 DRAW -4.2
Kluijfhout, A.A. (Anthon) (1895) Saturday 7 March 2026 WIN +12.1
Vries de, F. (Fabian) (1998) Saturday 28 February 2026 DRAW +4.1
Eikenaar, E. (Erik) (1548) Tuesday 17 February 2026 DRAW -9.4
Ellenbroek, A.J. (Ton) (2059) Saturday 14 February 2026 WIN +18.4
Monsma, M. (Menno) (2139) Saturday 14 February 2026 DRAW +8.0
Hamhuis, J. (Jasper) (1873) Saturday 7 February 2026 WIN +12.3
Tol van der, J.H. (Henk) (1752) Thursday 5 February 2026 WIN +8.2
Husers, Y.G.M. (Yannic) (2036) Friday 30 January 2026 LOSS -7.5
Fallaux, S. (Storm) (1978) Tuesday 20 January 2026 LOSS -9.4
Knol, N.T. (Noah) (1930) Saturday 13 December 2025 DRAW +1.5
IM Kroeze, F.M. (Frank) (2383) Tuesday 2 December 2025 LOSS -1.0
Boerrigter, S.H.W. (Stan) (1859) Saturday 22 November 2025 DRAW -0.9
Rijkhoek, H. (Harro) (1639) Monday 3 November 2025 WIN +4.9
Goede de, H.P. (Hans) (1825) Saturday 1 November 2025 DRAW -2.0