KNSB FIDE
PS

Peter Sonder

Rated since January 2023

1991 Classic
1991 Rapid

RIVALRY

Nemesis
Flohr, D.R. (Dennis)
Games: 3 · Win rate: 33%

The good & the bad

Best wins
HOOLSEMA, M. (MAARTEN) 2046
9869 SGS Viertallencompetitie 2024/2025 2025-04 · 2025-03-28
WAKKEE, J.C. (COLIJN) 2012
5711 SOS Competitie 2022/2023 December 2022 · 2022-12-06
HELSLOOT, J.S. (JAN) 1981
8571 KNSB competitie 2023-2024 Klasse 3 ronde 7 · 2024-03-02
SCHROËN, F. (FERRY) 1956
12992 KNSB competitie 2025-2026 Klasse 5 ronde 6 · 2026-02-07
VELDHUIZEN, D. (DIRK) 1943
12410 KNSB competitie 2025-2026 Klasse 5 Ronde 3 · 2025-11-22
Worst losses
KOSTER, J.P. (JAAP) 1765
7604 SOS Competitie 2023/2024 Oktober 2023 · 2023-10-02
VELDHUIZEN, M. (MARTIN) 1879
7885 SGS Viertallencompetitie 2023/2024 November 2023 · 2023-10-30
WIJK VAN, P.A. (PETER) 1922
8071 KNSB competitie 2023-2024 Klasse 3 ronde 5 · 2023-12-16
BUZOGANY, S. (SZABOLCS) 1939
9867 SGS Viertallencompetitie 2024/2025 2025-02 · 2025-02-17
PEL VAN, D. (DAAN) 1940
9869 SGS Viertallencompetitie 2024/2025 2025-04 · 2025-04-14
No FIDE-rated tournaments found.
SGS Viertallencompetitie 2025-2026 2026-03 Wed, Oct 1, 2025 +0–0=1 -0.3
SGS Bekercompetitie 2025-2026 2026-02 Wed, Oct 1, 2025 +0–1=0 -7.1
SGS Viertallencompetitie 2025-2026 2026-01 Wed, Oct 1, 2025 +0–0=1 +0.8
SGS Bekercompetitie 2025-2026 SGS Beker 2025-12 Wed, Oct 1, 2025 +0–0=1 +1.0
KNSB competitie 2025-2026 Klasse 5 ronde 6 Sat, Sep 20, 2025 +1–0=0 +11.1
KNSB competitie 2025-2026 Klasse 5 ronde 4 Sat, Sep 20, 2025 +0–0=1 -5.1
KNSB competitie 2025-2026 Klasse 5 Ronde 3 Sat, Sep 20, 2025 +1–0=0 +10.5
KNSB competitie 2025-2026 Klasse 5 ronde 2 Sat, Sep 20, 2025 +0–0=1 -7.2
KNSB competitie 2025-2026 Klasse 5 ronde 1 Sat, Sep 20, 2025 +0–0=1 -1.5
Nijkerkse Schaakclub interne competitie 09-02-2026 t/m 16-02-2026 (0… Mon, Sep 8, 2025 +1–0=0 +5.9
Nijkerkse Schaakclub interne competitie 05-01-2026 t/m 26-01-2026 (0… Mon, Sep 8, 2025 +1–0=0 +4.2
Nijkerkse Schaakclub interne competitie 06-10-2025 t/m 13-10-2025 (0… Mon, Sep 8, 2025 +1–0=0 +10.0
Nijkerkse Schaakclub interne competitie 08-09-2025 t/m 22-09-2025 (0… Mon, Sep 8, 2025 +0–0=1 -4.3
SGS Viertallencompetitie 2024/2025 2025-04 Fri, Nov 1, 2024 +1–1=0 -0.2
SGS Viertallencompetitie 2024/2025 2025-02 Fri, Nov 1, 2024 +0–1=0 -14.3
SGS Viertallencompetitie 2024-12 Fri, Nov 1, 2024 +0–0=1 +0.7
SGS Bekercompetitie 2024-11 Fri, Nov 1, 2024 +0–0=1 -1.8
SGS Viertallencompetitie 2024-11 Fri, Nov 1, 2024 +0–0=1 -2.3
KNSB competitie 2024-2025 Klasse 5 ronde 5 Sat, Sep 21, 2024 +1–0=0 +5.8
KNSB competitie 2024-2025 Klasse 5 ronde 4 Sat, Sep 21, 2024 +1–0=0 +8.5
KNSB competitie 2024-2025 Klasse 5 ronde 2 Sat, Sep 21, 2024 +1–0=0 +9.5
KNSB competitie 2024-2025 Klasse 5 ronde 1 Sat, Sep 21, 2024 +0–1=0 -6.3
Nijkerkse Schaakclub interne competitie 10-03-2025 t/m 17-03-2025 (06… Mon, Sep 9, 2024 +0–0=1 -1.6
Nijkerkse Schaakclub interne competitie 27-01-2025 t/m 17-02-2025 (06… Mon, Sep 9, 2024 +1–0=0 +6.8
Nijkerkse Schaakclub interne competitie 02-12-2024 t/m 09-12-2024 (06… Mon, Sep 9, 2024 +0–0=1 -2.4
Nijkerkse Schaakclub interne competitie 09-09-2024 t/m 14-10-2024 (060047) Mon, Sep 9, 2024 +3–0=0 +4.6
SOS Competitie 2024/2025 2025-02 Sun, Sep 1, 2024 +1–0=0 +7.2
SGS Viertallencompetitie 2023/2024 Mei 2024 Sun, Oct 1, 2023 +0–0=1 +0.5
SGS Viertallencompetitie 2023/2024 Maart 2024 Sun, Oct 1, 2023 +1–0=0 +11.5
SGS Bekercompetitie 2023/2024 2024-01 Sun, Oct 1, 2023 +0–0=1 +6.6
SGS Bekercompetitie 2023/2024 2023-11 Sun, Oct 1, 2023 +0–1=0 -10.9
SGS Viertallencompetitie 2023/2024 November 2023 Sun, Oct 1, 2023 +0–1=0 -16.2
Nijkerkse Schaakclub interne competitie 18-09-2023 t/m 03-06-2024 (060047) Mon, Sep 18, 2023 +2–0=1 +3.8
KNSB competitie 2023-2024 Klasse 2 ronde 8 Sat, Sep 16, 2023 +0–0=1 -2.7
KNSB competitie 2023-2024 Klasse 3 ronde 7 Sat, Sep 16, 2023 +1–0=0 +13.4
KNSB competitie 2023-2024 Klasse 3 ronde 5 Sat, Sep 16, 2023 +0–1=0 -12.8
KNSB competitie 2023-2024 Klasse 3 ronde 2 Sat, Sep 16, 2023 +0–1=0 -8.6
SOS Competitie 2023/2024 November 2023 Fri, Sep 1, 2023 +1–0=0 +0.3
SOS Competitie 2023/2024 Oktober 2023 Fri, Sep 1, 2023 +0–1=0 -19.5
SOS Competitie 2023/2024 September 2023 Fri, Sep 1, 2023 +0–0=1 -8.0
KNSB competitie 2022-2023 Klasse 3 ronde 9 Sat, Sep 17, 2022 +1–0=0 +4.8
KNSB competitie 2022-2023 Klasse 4 ronde 5 Sat, Sep 17, 2022 +0–0=1 -7.4
KNSB competitie 2022-2023 Klasse 4 ronde 4 Sat, Sep 17, 2022 +1–0=0 +5.0
SOS Competitie 2022/2023 Mei Mon, Sep 12, 2022 +0–0=1 -3.4
SOS Competitie 2022/2023 April 2023(K1) Mon, Sep 12, 2022 +1–0=1 +1.2
SOS Competitie 2022/2023 Februari 2023 Mon, Sep 12, 2022 +1–0=0 +6.3
SOS Competitie 2022/2023 Januari 2023 Mon, Sep 12, 2022 +1–0=0 +6.5
SOS Competitie 2022/2023 December 2022 Mon, Sep 12, 2022 +1–0=0 +14.1

Rating History

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Peak Ratings

Classic 2014 March 1, 2026
Rapid 2014 March 1, 2026
Blitz 2014 March 1, 2026

Games

Wins 25
Losses 9
Draws 20
Win Rate 46%

Performance by Color

Color Wins Draws Losses Win Rate
White 13 13 2 46%
Black 12 7 7 46%

Recent Matches

Kate ten, G. (Gustav) (1989) 2026-02-16 DRAW -0.3
Vastenburg, G. (Govert) (1793) 2026-02-09 WIN +5.9
Schroën, F. (Ferry) (1956) 2026-02-07 WIN +11.1
Dieleman, M. (Marco) (2162) 2026-01-31 LOSS -7.1
Cozijnsen, J. (Jan) (1722) 2026-01-12 WIN +4.2
Tijssens, R. (Rob) (1852) 2025-12-13 DRAW -5.1
Groot de, J.A. (Johan) (2027) 2025-12-08 DRAW +0.8
Heijnekamp, N. (Niels) (2028) 2025-11-30 DRAW +1.0
Veldhuizen, D. (Dirk) (1943) 2025-11-22 WIN +10.5
Arends, J. (Janco) (1770) 2025-11-01 DRAW -7.2
Flohr, D.R. (Dennis) (1919) 2025-10-13 WIN +10.0
Vriend, J.D. (Jan Dirk) (1948) 2025-10-04 DRAW -1.5
Flohr, M.R. (Marcel) (1869) 2025-09-15 DRAW -4.3
Pel van, D. (Daan) (1940) 2025-04-14 LOSS -14.4
Hoolsema, M. (Maarten) (2046) 2025-03-28 WIN +14.2
Flohr, M.R. (Marcel) (1950) 2025-03-17 DRAW -1.6
Buzogany, S. (Szabolcs) (1939) 2025-02-17 LOSS -14.3
Vastenburg, G. (Govert) (1818) 2025-02-10 WIN +6.8
Brachten, R.H.B. (Ron) (1783) 2025-02-08 WIN +5.8
Norden, M.J. (Marc) (1831) 2025-02-03 WIN +7.2