KNSB FIDE
TD

Theo Dekker

Rated since January 2023

1970 Classic
1903 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
VONK, J.J. (JACO) 2121
11852 KNSB competitie 2025-2026 Klasse 4 ronde 1 · Saturday 20 September 2025
ZWART DE, C. (COR) 2037
9436 KNSB competitie 2024-2025 Klasse 4 ronde 1 · Saturday 21 September 2024
WOUDT, I.I. (ISMAËL) 1996
8572 KNSB competitie 2023-2024 Klasse 4 ronde 7 · Saturday 2 March 2024
BROUWER, J. (JOEY) 1976
Snelschaak Teams (tijdens NK 2024) · Saturday 13 July 2024
WIT DE, C. (COR) 1939
9950 KNSB competitie 2024-2025 Klasse 4 ronde 4 · Saturday 23 November 2024
Worst losses
JONG DE, F. (FRANK) 1894
12991 KNSB competitie 2025-2026 Klasse 4 ronde 7 · Saturday 7 February 2026
PEL VAN, G. (GERBEN) 1931
Snelschaak Teams (tijdens NK 2024) · Saturday 13 July 2024
WALLE VAN DE, R.P.M. (ROB) 1934
Snelschaak Teams (tijdens NK 2024) · Saturday 13 July 2024
MOLENDIJK, P.B. (PIETER) 1952
Snelschaak Teams (tijdens NK 2024) · Saturday 13 July 2024
TOL, E.M. (EDWIN) 1956
Snelschaak Teams (tijdens NK 2024) · Saturday 13 July 2024
No FIDE-rated tournaments found.
KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +0–1=0 -8.5
KNSB competitie 2025-2026 Klasse 4 ronde 6 Saturday 20 September 2025 +0–1=0 -10.9
KNSB competitie 2025-2026 Klasse 4 ronde 8 Saturday 20 September 2025 +0–0=1 +3.7
KNSB competitie 2025-2026 Klasse 4 ronde 7 Saturday 20 September 2025 +0–1=0 -16.1
KNSB competitie 2025-2026 Klasse 3 ronde 5 Saturday 20 September 2025 +0–0=1 +5.9
KNSB competitie 2025-2026 Klasse 4 Ronde 4 Saturday 20 September 2025 +0–0=1 -3.7
KNSB competitie 2025-2026 Klasse 4 ronde 3 Saturday 20 September 2025 +0–1=0 -7.7
KNSB competitie 2025-2026 Klasse 4 ronde 2 Saturday 20 September 2025 +1–0=0 +5.8
KNSB competitie 2025-2026 Klasse 4 ronde 1 Saturday 20 September 2025 +1–0=0 +17.2
RSB Competitie 2025-2026 Achttallen juni Monday 1 September 2025 +0–0=1 +2.9
KNSB competitie 2024-2025 Klasse 4 ronde 9 en uitgestelde wedstrijd … Saturday 21 September 2024 +0–1=0 -9.8
KNSB competitie 2024-2025 Klasse 4 ronde 6 Saturday 21 September 2024 +0–1=0 -6.9
KNSB competitie 2024-2025 Klasse 4 ronde 5 Saturday 21 September 2024 +0–0=1 +7.0
KNSB competitie 2024-2025 Klasse 4 ronde 4 Saturday 21 September 2024 +1–0=0 +10.9
KNSB competitie 2024-2025 Klasse 4 ronde 3 Saturday 21 September 2024 +0–0=1 -4.4
KNSB competitie 2024-2025 Klasse 4 ronde 2 Saturday 21 September 2024 +0–0=1 +0.2
KNSB competitie 2024-2025 Klasse 4 ronde 1 Saturday 21 September 2024 +1–0=0 +14.9
Snelschaak Teams (tijdens NK 2024) Saturday 13 July 2024 +4–9=1 -58.4
KNSB competitie 2023-2024 Klasse 4 ronde 9 Saturday 16 September 2023 +0–1=0 -8.1
KNSB competitie 2023-2024 Klasse 4 ronde 8 Saturday 16 September 2023 +0–0=1 +0.1
KNSB competitie 2023-2024 Klasse 4 ronde 7 Saturday 16 September 2023 +1–0=0 +13.7
KNSB competitie 2023-2024 Klasse 4 ronde 6 Saturday 16 September 2023 +0–0=1 -1.9
KNSB competitie 2023-2024 Klasse 4 ronde 5 Saturday 16 September 2023 +0–0=1 +1.6
KNSB competitie 2023-2024 Klasse 4 ronde 4 Saturday 16 September 2023 +1–0=0 +9.8
KNSB competitie 2023-2024 Klasse 4 ronde 2 Saturday 16 September 2023 +1–0=0 +12.5
KNSB competitie 2023-2024 Klasse 4 ronde 1 Saturday 16 September 2023 +1–0=0 +11.6
KNSB competitie 2022-2023 Klasse 4 ronde 7 Saturday 17 September 2022 +1–0=0 +4.5
KNSB competitie 2022-2023 Klasse 4 ronde 6 Saturday 17 September 2022 +0–0=1 -2.6
KNSB competitie 2022-2023 Klasse 4 ronde 5 Saturday 17 September 2022 +1–0=0 +12.0

Team Competition

Current teams
Sliedrecht 1
Klasse 1A · 2025-2026 · 1 game
Sliedrecht 1
Klasse 3E · 2025-2026 · 1 game
Sliedrecht 2
Klasse 4H · 2025-2026 · 8 games
Past teams
Sliedrecht 2
Klasse 4F · 2024-2025
Sliedrecht 2
Klasse 4F · 2023-2024
Sliedrecht 2
Klasse 4F · 2022-2023
Sliedrecht 2
Klasse 3G · 2021-2022

Rating History

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Peak Ratings

Classic 2004 Nov. 1, 2025
Rapid 1983 March 1, 2026
Blitz 1903 Oct. 1, 2024

Games

Wins 14
Losses 16
Draws 12
Win Rate 33%

Performance by Color

Color Wins Draws Losses Win Rate
White 2 2 6 20%
Black 12 10 10 38%

Recent Matches

Lahaye, J.J. (Jordy) (2051) Friday 29 May 2026 DRAW +2.9
Vossen van, R. (Robbert) (2093) Saturday 11 April 2026 LOSS -8.5
Pepels, G. (Ger) (2029) Saturday 28 March 2026 LOSS -10.9
Burght van der, M. (Maarten) (2092) Saturday 7 March 2026 DRAW +3.7
Jong de, F. (Frank) (1894) Saturday 7 February 2026 LOSS -16.1
Boer den, L. (Lennard) (2174) Saturday 13 December 2025 DRAW +5.9
Dongen van, E.A.W.M. (Erik) (1897) Saturday 22 November 2025 DRAW -3.7
FM Hallebeek, F. (Fred) (2148) Saturday 1 November 2025 LOSS -7.7
Dziólko, W.D. (Wiktor) (1790) Saturday 4 October 2025 WIN +5.8
Vonk, J.J. (Jaco) (2121) Saturday 20 September 2025 WIN +17.2
Stam, H.J. (Hans) (2070) Saturday 10 May 2025 LOSS -9.8
Mukhtarov, F. (Farhad) (2168) Saturday 8 February 2025 LOSS -6.9
IM Slingerland, F. (Fred) (2210) Saturday 14 December 2024 DRAW +7.0
Wit de, C. (Cor) (1939) Saturday 23 November 2024 WIN +10.9
Braggaar, W.P.D. (Pim) (1855) Saturday 9 November 2024 DRAW -4.4
Straaten van, M. (Marco) (1991) Saturday 12 October 2024 DRAW +0.2
Zwart de, C. (Cor) (2037) Saturday 21 September 2024 WIN +14.9
Pel van, G. (Gerben) (1931) Saturday 13 July 2024 LOSS -13.8
Faverey, E.S. (Eddy) (1816) Saturday 13 July 2024 WIN +7.4
Walle van de, R.P.M. (Rob) (1934) Saturday 13 July 2024 WIN +11.3