KNSB FIDE
TZ

Thom Zwamborn

Rated since January 2023

1952 Classic
1930 Rapid
1984 Blitz

RIVALRY

Nemesis
Piel, R.J. (Ruben)
Games: 3 · Win rate: 67%
Kryptonite
Beltman, J.B. (Joost)
Games: 3 · Win rate: 33%

The good & the bad

Best wins
ANDRINGA, A.T. (ARJO) 2094
9787 2025 Chess.com Botwinnik Rapid toernooi Groep A · Saturday 4 January 2025
KRONEMEIJER, S. (SIMON) 2059
9787 2025 Chess.com Botwinnik Rapid toernooi Groep A · Saturday 4 January 2025
JURRIUS, T. (THEO) 2032
10704 KNSB competitie 2024-2025 Klasse 4 ronde 7 · Saturday 8 March 2025
HACQUEBORD, T. (TJERK) 2018
9651 SOS Competitie 2024/2025 2025-02 · Wednesday 19 February 2025
BACHAUS, S. (SANDER) 2006
9109 50e Open Kampioenschap van Utrecht Groep A · Sunday 1 June 2025
Worst losses
LANDOLT, B.J. (BART) 1743
7152 Open Kampioenschap van Utrecht Groep B · Saturday 20 May 2023
BELTMAN, J.B. (JOOST) 1745
7805 KNSB competitie 2023-2024 Klasse 4 ronde 4 · Saturday 25 November 2023
POL VAN DER, R. (RICO) 1813
7580 KNSB competitie 2023-2024 Klasse 4 ronde 1 · Saturday 16 September 2023
CALVI, E.C. (ELIAS) 1827
14012 HSG Open 2026 Groep B · Friday 19 June 2026
ZELST VAN, P. (PETER) 1837
12478 SGS Bekercompetitie 2025-2026 2026-01 · Sunday 30 November 2025
HSG Open 2026 Groep B Friday 19 June 2026 +3–1=1 +8.3
18de BPB Limburg Open 2026 Groep B Friday 22 May 2026 +1–3=2 -36.8
51e Open Kampioenschap van Utrecht Groep B Friday 15 May 2026 +3–1=2 +14.9
Tata Steel Chess Tournament 2026 Weekendvierkampem Friday 16 January 2026 +2–0=1 +26.7
Amsterdam Chess Open Groep B1 Friday 24 October 2025 +3–2=1 +18.4
17e BPB Limburg Open 2025 Groep B Friday 6 June 2025 +1–3=3 -4.2
50e Open Kampioenschap van Utrecht Groep A Friday 30 May 2025 +1–3=2 -8.7
2025 Chess.com Botwinnik Rapid toernooi Groep A Saturday 4 January 2025 +3–4=0 +16.2
HSG Open 2024 Groep A Friday 21 June 2024 +1–3=1 -4.2
Tata Steel Chess Tournament 2024 Weekendvierkampen Friday 12 January 2024 +2–0=1 +41.4
Open Kampioenschap van Utrecht Groep B Friday 19 May 2023 +1–1=3 -20.8
SGS Bekercompetitie 2025-2026 2026-01 Wednesday 1 October 2025 +0–1=0 -15.7
KNSB competitie 2025-2026 Klasse 5 ronde 5 Saturday 20 September 2025 +1–0=0 +9.1
KNSB competitie 2025-2026 Klasse 5 ronde 6 Saturday 20 September 2025 +0–0=1 -2.3
KNSB competitie 2025-2026 Klasse 5 ronde 4 Saturday 20 September 2025 +1–0=0 +6.7
KNSB competitie 2025-2026 Klasse 5 Ronde 3 Saturday 20 September 2025 +1–0=0 +8.2
KNSB competitie 2025-2026 Klasse 5 ronde 2 Saturday 20 September 2025 +0–0=1 +0.3
KNSB competitie 2025-2026 Klasse 5 ronde 1 Saturday 20 September 2025 +1–0=0 +2.3
SOS competitie 2025/2026 Lijst 1 juni Monday 1 September 2025 +0–1=0 -6.8
SOS competitie 2025/2026 Lijst 1 mei Monday 1 September 2025 +0–1=0 -11.4
SOS competitie 2025/2026 Lijst 1 apr Monday 1 September 2025 +0–1=0 -1.8
SOS competitie 2025/2026 Lijst 1 mrt Monday 1 September 2025 +0–0=1 +2.2
SOS competitie 2025/2026 Lijst 1 feb Monday 1 September 2025 +0–0=1 +2.2
SOS competitie 2025/2026 Lijst 1 jan Monday 1 September 2025 +1–1=0 +4.3
SOS competitie 2025/2026 Lijst 1 Dec Monday 1 September 2025 +1–0=0 +13.2
SOS competitie 2025/2026 Lijst 1 Nov Monday 1 September 2025 +0–1=1 -3.0
KNSB competitie 2024-2025 Klasse 4 ronde 9 en uitgestelde wedstrijd … Saturday 21 September 2024 +0–1=0 -11.7
KNSB competitie 2024-2025 Klasse 4 ronde 8 Saturday 21 September 2024 +0–1=0 -12.4
KNSB competitie 2024-2025 Klasse 4 ronde 7 Saturday 21 September 2024 +1–0=0 +16.0
KNSB competitie 2024-2025 Klasse 4 ronde 6 Saturday 21 September 2024 +1–0=0 +12.1
KNSB competitie 2024-2025 Klasse 4 ronde 5 Saturday 21 September 2024 +0–0=1 +2.3
KNSB competitie 2024-2025 Klasse 4 ronde 4 Saturday 21 September 2024 +0–0=1 +5.9
KNSB competitie 2024-2025 Klasse 4 ronde 3 Saturday 21 September 2024 +0–1=0 -10.3
KNSB competitie 2024-2025 KNSB Beker ronde 1 voor decemberlijst Saturday 21 September 2024 +1–0=0 +15.8
KNSB competitie 2024-2025 Klasse 4 ronde 2 Saturday 21 September 2024 +0–1=0 -8.0
SOS Competitie 2024/2025 2025-05 Sunday 1 September 2024 +0–1=0 -7.5
SOS Competitie 2024/2025 2025-04 Sunday 1 September 2024 +0–0=1 -0.2
SOS Competitie 2024/2025 2025-03 Sunday 1 September 2024 +1–0=0 +10.7
SOS Competitie 2024/2025 2025-02 Sunday 1 September 2024 +1–0=0 +16.4
SOS Competitie 2024/2025 2025-01 Sunday 1 September 2024 +0–1=0 -12.1
SOS Competitie 2024/2025 2024-12 Sunday 1 September 2024 +0–0=1 +1.8
SOS Competitie 2024/2025 2024-11 Sunday 1 September 2024 +1–0=0 +13.5
SOS Competitie 2024/2025 2024-10 Sunday 1 September 2024 +1–0=1 +16.5
49e Open Kampioenschap van Utrecht Groep A Friday 10 May 2024 +0–5=1 -60.9
KNSB competitie 2023-2024 Klasse 4 ronde 9 Saturday 16 September 2023 +1–0=0 +13.6
KNSB competitie 2023-2024 Klasse 4 ronde 8 Saturday 16 September 2023 +1–0=0 +17.3
KNSB competitie 2023-2024 Klasse 4 ronde 7 Saturday 16 September 2023 +1–0=0 +17.8
KNSB competitie 2023-2024 Klasse 4 ronde 6 Saturday 16 September 2023 +0–1=0 -13.2
KNSB competitie 2023-2024 Klasse 4 ronde 5 Saturday 16 September 2023 +0–0=1 +2.2
KNSB competitie 2023-2024 Klasse 4 ronde 4 Saturday 16 September 2023 +0–1=0 -18.9
KNSB competitie 2023-2024 KNSB Beker 2023-2024 voor novemberlijst Saturday 16 September 2023 +1–0=0 +23.0
KNSB competitie 2023-2024 Klasse 4 ronde 1 Saturday 16 September 2023 +0–1=0 -15.3
SOS Competitie 2023/2024 Mei 2024 Friday 1 September 2023 +0–1=0 -14.7
SOS Competitie 2023/2024 April 2024 Friday 1 September 2023 +0–1=0 -5.8
SOS Competitie 2023/2024 Maart 2024 Friday 1 September 2023 +1–0=0 +17.8
SOS Competitie 2023/2024 Februari 2024 Friday 1 September 2023 +1–0=0 +13.5
SOS Competitie 2023/2024 Januari 2024 Friday 1 September 2023 +1–0=0 +13.7
SOS Competitie 2023/2024 December 2023 Friday 1 September 2023 +0–0=1 -4.6
SOS Competitie 2023/2024 November 2023 Friday 1 September 2023 +0–1=0 -14.6
SOS Competitie 2023/2024 September 2023 Friday 1 September 2023 +1–0=0 +16.3
SGS Bekercompetitie Juni 2023 Monday 17 October 2022 +0–1=0 -5.2
SGS Bekercompetitie apr 2023 Monday 17 October 2022 +0–0=1 -0.1
SGS Bekercompetitie Jan 2023 Monday 17 October 2022 +1–0=0 +15.0
KNSB competitie 2022-2023 Klasse 4 ronde 8 Saturday 17 September 2022 +1–0=0 +26.0
KNSB competitie 2022-2023 Klasse 4 ronde 7 Saturday 17 September 2022 +1–0=0 +21.3
KNSB competitie 2022-2023 Klasse 4 ronde 6 Saturday 17 September 2022 +0–0=1 +3.8
KNSB competitie 2022-2023 Beker ronde 2 Saturday 17 September 2022 +0–1=0 -3.3
SOS Competitie 2022/2023 Mei Monday 12 September 2022 +0–1=0 -7.2
SOS Competitie 2022/2023 April 2023(HK) Monday 12 September 2022 +0–0=1 +7.6
SOS Competitie 2022/2023 Maart 2023(HK) Monday 12 September 2022 +0–0=1 -5.6
SOS Competitie 2022/2023 Februari 2023 Monday 12 September 2022 +0–0=1 +0.2
SOS Competitie 2022/2023 Januari 2023 Monday 12 September 2022 +0–1=0 -3.8
SOS Competitie 2022/2023 December 2022 Monday 12 September 2022 +0–0=1 +9.9

Team Competition

Current teams
De Rode Loper 1
Klasse 5G · 2025-2026 · 6 games
Rode Loper 1
HKD · 2025-2026 · 3 games
Rode Loper 2
HKC · 2025-2026 · 7 games
Past teams
De Rode Loper 1
HKB · 2024-2025
De Rode Loper 1
Klasse 4G · 2024-2025
De Rode Loper 1
Klasse 4E · 2023-2024
De Rode Loper 1
HKB · 2023-2024
De Rode Loper 1
Klasse 4C · 2022-2023
De Rode Loper 1
HKB · 2022-2023
De Rode Loper 2
1D · 2021-2022
De Rode Loper 2
Klasse 5C · 2021-2022
De Rode Loper 3
3B · 2021-2022

Rating History

Loading rating history...

Peak Ratings

Classic 1984 April 1, 2026
Rapid 1930 Feb. 1, 2025
Blitz 1984 April 1, 2026

Games

Wins 45
Losses 48
Draws 36
Win Rate 35%

Performance by Color

Color Wins Draws Losses Win Rate
White 22 17 22 36%
Black 23 19 26 34%

Recent Matches

Ulucan, S.U. (Sercan) (1904) Sunday 21 June 2026 WIN +9.8
Burg van den, R. (Ralf) (1938) Sunday 21 June 2026 WIN +11.0
Timmerman, J.T.J. (Jan) (1867) Saturday 20 June 2026 WIN +8.6
Calvi, E.C. (Elias) (1827) Friday 19 June 2026 LOSS -17.6
Bennett, Eric (1878) Friday 19 June 2026 DRAW -3.5
Overtoom, R.S.J. (Reinier) (1914) Monday 25 May 2026 LOSS -14.5
Pincket, Thomas (1888) Sunday 24 May 2026 DRAW -2.9
Walker, Julia (1866) Sunday 24 May 2026 LOSS -16.2
Boskemper, D. (Danny) (1863) Saturday 23 May 2026 WIN +8.8
Heinsbergen van, J. (Jonathan) (1922) Saturday 23 May 2026 LOSS -14.3
Verweij, L.A. (Kees) (2039) Friday 22 May 2026 DRAW +2.3
Uitermark, I.D. (Imre) (1914) Sunday 17 May 2026 DRAW -2.0
WFM Thai Ngoc Tuong Minh (1932) Sunday 17 May 2026 LOSS -13.9
Saricicek, A. (Ahmet) (1974) Saturday 16 May 2026 WIN +12.5
Bruijn de, O. (Olivier) (1860) Saturday 16 May 2026 WIN +8.7
Bettman, J. (Jan) (1948) Friday 15 May 2026 DRAW -0.9
Lee, J.B. (Jungbin) (1918) Friday 15 May 2026 WIN +10.6
Smid, J. (Jelle) (2147) Friday 8 May 2026 LOSS -6.8
Heijnekamp, N. (Niels) (2016) Friday 24 April 2026 LOSS -11.4
Drewes, B.A. (Benno) (1877) Saturday 28 March 2026 WIN +9.1