KNSB FIDE
GB

Guy Bielderman

Rated since January 2023

2156 Classic
2096 Rapid
2096 Blitz

RIVALRY

Nemesis
Kampman, T.B. (Thijs)
Games: 6 · Win rate: 50%
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 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 +0–2=0 -16.4
SBO Viertallencompetitie 2025/2026 Lijst Maart Wednesday 1 October 2025 +0–0=2 -1.5
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 +0–2=0 -33.7
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

Rating History

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Peak Ratings

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

Games

Wins 82
Losses 24
Draws 20
Win Rate 65%

Performance by Color

Color Wins Draws Losses Win Rate
White 43 10 11 67%
Black 39 10 13 63%

Recent Matches

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
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
Kruimer, M.H. (Matthias) (2214) Thursday 29 January 2026 LOSS -8.2
Compagnie, L.G. (Luc) (2066) Monday 26 January 2026 DRAW -0.7
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