KNSB FIDE
GB

Guy Bielderman

Rated since January 2023

2154 Classic
2096 Rapid
2096 Blitz

RIVALRY

Nemesis
Dries op den, J. (Johan)
Games: 11 · Win rate: 55%
Kryptonite
Alssema, E. (Etien)
Games: 10 · Win rate: 30%
Easy Target
Vos de, A.A. (Bert)
Games: 6 · Win rate: 100%

The good & the bad

Best wins
DRIES OP DEN, J. (JOHAN) 2183
13568 S.V. E.N.O. interne competitie 19-01-2026 t/m 20-04-2026 (030011) · Monday 23 March 2026
ALSSEMA, E. (ETIEN) 2077
12770 S.V. E.N.O. interne competitie 03-11-2025 t/m 12-01-2026 (030011) · Monday 5 January 2026
ELLENBROEK, A.J. (TON) 2047
13628 SBO Cup 2025/2026 Halve Finale · Tuesday 7 April 2026
BOSCH VAN ROSENTHAL, J.J.B. (JEROEN) 2039
12264 KNSB competitie 2025-2026 Klasse 4 ronde 3 · Saturday 1 November 2025
POELSTRA, B.M. (BEN) 1998
10131 SBO Cup 2024/2025 Achtste finale · Friday 6 December 2024
Worst losses
MOCKING, S. (SJAAK) 1794
9649 SOS Competitie 2024/2025 2024-12 · Monday 9 December 2024
BEINTEMA, J. (JELLE) 1815
8083 S.V. E.N.O. interne competitie 04-09-2023 t/m 11-12-2023 (030011) · Monday 20 November 2023
WINKOOP VAN, J. (JEROEN) 1891
7640 KNSB competitie 2023-2024 Klasse 4 ronde 2 · Saturday 7 October 2023
VOORTMAN, N.M. (NIELS) 1922
9091 S.V. E.N.O. interne competitie 08-01-2024 t/m 27-05-2024 (030011) · Monday 15 January 2024
SCHRADER, H. (HANS-JOACHIM) 1927
10810 SBO Viertallencompetitie 2024/2025 Ronde 3 (F deels), Ronde 4 (A-E, … · Monday 24 February 2025
No FIDE-rated tournaments found.
S.V. E.N.O. interne competitie 11-05-2026 t/m 18-05-2026 (030011) Sunday 10 May 2026 +1–0=1 -2.5
S.V. E.N.O. interne competitie 19-01-2026 t/m 20-04-2026 (030011) Monday 19 January 2026 +7–0=2 +35.9
S.V. E.N.O. interne competitie 03-11-2025 t/m 12-01-2026 (030011) Monday 3 November 2025 +5–0=0 +47.2
SBO Viertallencompetitie 2025/2026 Lijst Mei Wednesday 1 October 2025 +1–0=0 +8.8
SBO Cup 2025/2026 Halve Finale Wednesday 1 October 2025 +1–0=0 +10.8
SBO Cup 2025/2026 Kwartfinale Wednesday 1 October 2025 +0–1=0 -8.2
SBO Viertallencompetitie 2025/2026 Lijst Maart Wednesday 1 October 2025 +0–0=1 -0.7
SBO Cup 2025/2026 Achtste Finale Wednesday 1 October 2025 +1–0=0 +8.0
KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +1–0=0 +4.8
KNSB competitie 2025-2026 Klasse 4 ronde 6 Saturday 20 September 2025 +0–0=1 -3.8
KNSB competitie 2025-2026 Klasse 4 ronde 8 Saturday 20 September 2025 +0–0=1 -8.3
KNSB competitie 2025-2026 Klasse 4 ronde 7 Saturday 20 September 2025 +0–1=0 -16.8
KNSB competitie 2025-2026 Klasse 4 ronde 5 Saturday 20 September 2025 +0–0=1 -2.5
KNSB competitie 2025-2026 Klasse 4 Ronde 4 Saturday 20 September 2025 +1–0=0 +9.5
KNSB competitie 2025-2026 Klasse 4 ronde 3 Saturday 20 September 2025 +1–0=0 +11.8
KNSB competitie 2025-2026 KNSB Beker ronde 1 voor november rating Saturday 20 September 2025 +0–1=0 -15.5
KNSB competitie 2025-2026 Klasse 4 ronde 2 Saturday 20 September 2025 +0–0=1
KNSB competitie 2025-2026 Klasse 4 ronde 1 Saturday 20 September 2025 +0–0=1 -4.2
S.V. E.N.O. interne competitie 08-09-2025 t/m 27-10-2025 (030011) Monday 1 September 2025 +4–2=0 -21.6
S.V. E.N.O. interne competitie 03-03-2025 t/m 26-05-2025 (030011) Monday 3 March 2025 +6–1=1 +14.6
Interne competitie ENO 2024/2025 Ronde 13 t/m Ronde 24 Groep A Monday 2 December 2024 +5–2=1 +1.2
S.V. E.N.O. interne competitie 04-11-2024 t/m 25-11-2024 (030011) Monday 4 November 2024 +1–0=0 +14.0
SBO Cup 2024/2025 Kwartfinale Tuesday 1 October 2024 +1–0=0 +6.9
SBO Viertallencompetitie 2024/2025 Ronde 3 (F deels), Ronde 4 (A-E, … Tuesday 1 October 2024 +0–1=0 -17.6
SBO Cup 2024/2025 Achtste finale Tuesday 1 October 2024 +1–0=0 +8.8
SBO Viertallencompetitie 2024/2025 Ronde 1 (B, F deels) en Ronde 2 (A deel… Tuesday 1 October 2024 +1–0=0 +9.0
KNSB competitie 2024-2025 Klasse 3 ronde 9 Saturday 21 September 2024 +1–0=0 +7.9
KNSB competitie 2024-2025 Klasse 3 ronde 7 Saturday 21 September 2024 +1–0=0 +7.7
KNSB competitie 2024-2025 Klasse 3 ronde 6 Saturday 21 September 2024 +0–0=1 -6.6
KNSB competitie 2024-2025 KNSB Beker ronde 2 voor januarilijst Saturday 21 September 2024 +0–0=1 +1.3
KNSB competitie 2024-2025 Klasse 3 ronde 5 Saturday 21 September 2024 +0–1=0 -14.3
KNSB competitie 2024-2025 Klasse 3 ronde 4 Saturday 21 September 2024 +1–0=0 +5.9
KNSB competitie 2024-2025 Klasse 3 ronde 3 + inhaalwedstrijd ronde 1 Saturday 21 September 2024 +0–1=0 -11.6
KNSB competitie 2024-2025 KNSB Beker voor novemberlijst Saturday 21 September 2024 +1–0=0 +8.6
KNSB competitie 2024-2025 Klasse 3 ronde 2 Saturday 21 September 2024 +0–1=0 -14.0
KNSB competitie 2024-2025 Klasse 3 ronde 1 Saturday 21 September 2024 +1–0=0 +8.3
S.V. E.N.O. interne competitie 02-09-2024 t/m 21-10-2024 (030011) Monday 2 September 2024 +4–2=0 -14.6
SOS Competitie 2024/2025 2025-03 Sunday 1 September 2024 +1–0=0 +3.9
SOS Competitie 2024/2025 2025-02 Sunday 1 September 2024 +1–0=0 +3.9
SOS Competitie 2024/2025 2024-12 Sunday 1 September 2024 +0–1=0 -21.3
SOS Competitie 2024/2025 2024-10 Sunday 1 September 2024 +1–0=0 +1.4
S.V. E.N.O. interne competitie 08-01-2024 t/m 27-05-2024 (030011) Monday 8 January 2024 +7–3=2 -27.6
SBO Cup 2023/2024 Achtste finale (uiterlijk 22 december) Monday 30 October 2023 +1–0=0 +1.6
SBO Viertallencompetitie 2023/2024 Ronde 5 (B deels), Ronde 6 (G deels) Monday 16 October 2023 +0–0=1 -1.2
KNSB competitie 2023-2024 Klasse 4 ronde 9 Saturday 16 September 2023 +1–0=0 +5.4
KNSB competitie 2023-2024 Klasse 4 ronde 8 Saturday 16 September 2023 +0–0=1 -8.7
KNSB competitie 2023-2024 Klasse 4 ronde 7 Saturday 16 September 2023 +1–0=0 +4.7
KNSB competitie 2023-2024 Klasse 4 ronde 6 Saturday 16 September 2023 +1–0=0 +2.6
KNSB competitie 2023-2024 Klasse 4 ronde 5 Saturday 16 September 2023 +1–0=0 +3.5
KNSB competitie 2023-2024 Klasse 4 ronde 4 Saturday 16 September 2023 +1–0=0 +5.1
KNSB competitie 2023-2024 Klasse 4 ronde 3 Saturday 16 September 2023 +1–0=0 +4.8
KNSB competitie 2023-2024 Klasse 4 ronde 2 Saturday 16 September 2023 +0–1=0 -18.6
KNSB competitie 2023-2024 Klasse 4 ronde 1 Saturday 16 September 2023 +1–0=0 +3.1
S.V. E.N.O. interne competitie 04-09-2023 t/m 11-12-2023 (030011) Monday 4 September 2023 +6–1=1 -14.5
Chess Festival Groningen Compact A Wednesday 21 December 2022 +2–2=0 -16.1
S.V. E.N.O. interne competitie 12-12-2022 t/m 22-05-2023 (030011) Monday 12 December 2022 +5–0=1 +13.8
KNSB competitie 2022-2023 Klasse 4 ronde 9 Saturday 17 September 2022 +1–0=0 +1.4
KNSB competitie 2022-2023 Klasse 4 ronde 8 Saturday 17 September 2022 +1–0=0 +2.5
KNSB competitie 2022-2023 Klasse 4 ronde 5 Saturday 17 September 2022 +1–0=0 +5.0
KNSB competitie 2022-2023 Klasse 4 ronde 4 Saturday 17 September 2022 +1–0=0 +5.8
D.S.G. Pallas interne competitie 27-10-2022 t/m 22-12-2022 (040041) Thursday 8 September 2022 +1–0=1 -7.8

Team Competition

Current teams
ENO 1
Klasse 4B · 2025-2026 · 9 games
ENO 1
A · 2025-2026 · 2 games
Past teams
ENO 1
Klasse 3A · 2024-2025
ENO 1
A · 2024-2025
ENO 1
2A · 2024-2025
ENO 1
Klasse 4B · 2023-2024
ENO 1
B · 2023-2024
ENO 1
Klasse 4B · 2022-2023
D.S.G. Pallas 1
Klasse 2A · 2021-2022
D.S.G. Pallas 1
HKB · 2019-2020

Rating History

Loading rating history...

Peak Ratings

Classic 2156 May 1, 2026
Rapid 2108 March 1, 2026
Blitz 2108 March 1, 2026

Games

Wins 83
Losses 22
Draws 20
Win Rate 66%

Performance by Color

Color Wins Draws Losses Win Rate
White 43 9 10 69%
Black 40 11 12 63%

Recent Matches

Kampman, T.B. (Thijs) (2042) Monday 18 May 2026 DRAW -3.4
Klaasen, H.J. (Eric) (1667) Monday 11 May 2026 WIN +1.0
Poelstra, B.M. (Ben) (1987) Monday 20 April 2026 WIN +8.8
Doctor, H.W. (Harry) (1697) Monday 13 April 2026 WIN +2.0
Rigter, H.A. (Hans) (1845) Saturday 11 April 2026 WIN +4.8
Ellenbroek, A.J. (Ton) (2047) Tuesday 7 April 2026 WIN +10.8
Trejic, A. (Amir) (1728) Monday 30 March 2026 WIN +2.3
Vries de, T. (Tobias) (1995) Saturday 28 March 2026 DRAW -3.8
Dries op den, J. (Johan) (2183) Monday 23 March 2026 WIN +14.9
Eikenaar, E. (Erik) (1574) Monday 9 March 2026 WIN +0.8
Haggeman, H.J.G.A. (Henny) (1827) Saturday 7 March 2026 DRAW -8.3
Alssema, E. (Etien) (2087) Monday 2 March 2026 DRAW -0.7
Beintema, J. (Jelle) (1851) Monday 23 February 2026 WIN +3.8
Kampman, T.B. (Thijs) (1987) Monday 16 February 2026 WIN +7.1
Bellwinkel, S.M. (Saskia) (1807) Monday 9 February 2026 WIN +2.9
Hoekstra, M.S.H. (Max) (1965) Saturday 7 February 2026 LOSS -16.8
Kruimer, M.H. (Matthias) (2214) Thursday 29 January 2026 LOSS -8.2
Compagnie, L.G. (Luc) (2066) Monday 26 January 2026 DRAW -0.7
Dries op den, J. (Johan) (2174) Monday 19 January 2026 DRAW +3.0
Noord de, P.F. (Peter) (1803) Monday 12 January 2026 WIN +4.0