KNSB FIDE
BZ

Bas van der Zwaag

Rated since January 2023

1903 Classic
1909 Rapid
1931 Blitz

RIVALRY

Nemesis
Dekker, J. (Jos)
Games: 5 · Win rate: 60%
Kryptonite
Spek van der, A. (Arthur)
Games: 4 · Win rate: 0%
Easy Target
Klinkers, R.L. (Roelof)
Games: 3 · Win rate: 67%

The good & the bad

Best wins
PRAGT, A. (ARJEN) 1996
10557 S.C. Heerenveen interne competitie 06-01-2025 t/m 17-02-2025 (010012) · Monday 20 January 2025
BAVEL VAN, F. (FERDI) 1988
9961 S.C. Heerenveen interne competitie 02-12-2024 t/m 02-12-2024 (010012) · Monday 2 December 2024
KEMPERMAN, J.G. (HANS) 1954
10364 SC WES interne competitie 07-11-2024 t/m 02-01-2025 (010035) · Thursday 7 November 2024
GRIENDT VAN DE, W.B. (WOUTER) 1920
9961 S.C. Heerenveen interne competitie 02-12-2024 t/m 02-12-2024 (010012) · Monday 2 December 2024
SCHUTTEL, D. (DERK) 1918
12021 FSB-competitie 2025-2026 ronde 5 1e klasse · Friday 13 February 2026
Worst losses
LAPKA, P. (PAWEL) 1442
7854 S.C. Heerenveen interne competitie 28-08-2023 t/m 20-11-2023 (010012) · Monday 25 September 2023
KLAASSEN, W. (WISSE) 1652
9961 S.C. Heerenveen interne competitie 02-12-2024 t/m 02-12-2024 (010012) · Monday 2 December 2024
TIMMER, N. (NIELS) 1659
8599 KNSB competitie 2023-2024 Klasse 4 ronde 8 · Saturday 23 March 2024
GOMEZ BECERRA, P.A. (PABLO) 1665
6556 KNSB competitie 2022-2023 Klasse 4 ronde 6 · Saturday 11 February 2023
VERBAAN, H. (HAN JONA) 1715
8300 FSB-competitie 23-24 1e klasse ronde 5 · Monday 12 February 2024
No FIDE-rated tournaments found.
S.C. Heerenveen interne competitie 01-12-2025 t/m 01-12-2025 (010012) Monday 1 December 2025 +3–0=2 +22.0
KNSB competitie 2025-2026 Klasse 5 ronde 7 Saturday 20 September 2025 +1–0=0 +11.3
KNSB competitie 2025-2026 Klasse 5 ronde 6 Saturday 20 September 2025 +0–1=0 -16.7
FSB-competitie 2025-2026 Beker ronde 3 Monday 1 September 2025 +1–0=0 +13.5
FSB-competitie 2025-2026 ronde 5 2e klasse Monday 1 September 2025 +0–0=1 +0.9
FSB-competitie 2025-2026 ronde 5 1e klasse Monday 1 September 2025 +1–0=0 +14.2
FSB-competitie 2025-2026 Beker ronde 2 Monday 1 September 2025 +1–0=0 +8.3
S.C. Heerenveen interne competitie 02-03-2026 t/m 20-04-2026 (010012) Monday 25 August 2025 +0–0=2 -6.0
S.C. Heerenveen interne competitie 12-01-2026 t/m 23-02-2026 (010012) Monday 25 August 2025 +2–0=0 +16.8
S.C. Heerenveen interne competitie 02-12-2024 t/m 02-12-2024 (010012) Sunday 1 December 2024 +7–3=1 +19.2
KNSB competitie 2024-2025 Klasse 5 ronde 7 Saturday 21 September 2024 +1–0=0 +12.5
KNSB competitie 2024-2025 Klasse 5 ronde 6 Saturday 21 September 2024 +0–0=1 +0.0
KNSB competitie 2024-2025 Klasse 5 ronde 4 Saturday 21 September 2024 +0–0=1 -1.1
KNSB competitie 2024-2025 Klasse 5 ronde 3 Saturday 21 September 2024 +0–0=1 +1.5
KNSB competitie 2024-2025 Klasse 5 ronde 2 Saturday 21 September 2024 +0–0=1 -2.4
FSB-competitie 24-25 ronde 7 1e klasse Sunday 1 September 2024 +0–0=1 +2.0
FSB-competitie 24-25 ronde 6 1e klasse Sunday 1 September 2024 +0–0=1 -6.3
FSB-competitie 24-25 ronde 4 1e klasse Sunday 1 September 2024 +0–0=1 +2.5
SC WES interne competitie 07-11-2024 t/m 02-01-2025 (010035) Sunday 1 September 2024 +1–1=0 +1.0
FSB-competitie 24-25 ronde 3 1e klasse Sunday 1 September 2024 +0–0=1 -5.2
FSB-competitie 24-25 FSB-competitie 24-25 ronde 2 1e klasse Sunday 1 September 2024 +0–0=1 -3.6
S.C. Heerenveen interne competitie 12-05-2025 t/m 19-05-2025 (010012) Monday 26 August 2024 +0–0=1 +1.7
S.C. Heerenveen interne competitie 31-03-2025 t/m 28-04-2025 (010012) Monday 26 August 2024 +0–1=0 -9.8
S.C. Heerenveen interne competitie 24-02-2025 t/m 24-03-2025 (010012) Monday 26 August 2024 +0–2=1 -19.8
S.C. Heerenveen interne competitie 06-01-2025 t/m 17-02-2025 (010012) Monday 26 August 2024 +1–1=0 +5.0
S.C. Heerenveen interne competitie 04-11-2024 t/m 16-12-2024 (010012) Monday 26 August 2024 +0–1=1 -11.7
S.C. Heerenveen interne competitie 26-08-2024 t/m 21-10-2024 (010012) Monday 26 August 2024 +1–0=4 +6.6
KNSB competitie 2023-2024 Klasse 4 ronde 9 Saturday 16 September 2023 +1–0=0 +11.0
KNSB competitie 2023-2024 Klasse 4 ronde 8 Saturday 16 September 2023 +0–1=0 -19.5
KNSB competitie 2023-2024 Klasse 4 ronde 7 Saturday 16 September 2023 +0–0=1 -1.6
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 +0–1=0 -14.7
KNSB competitie 2023-2024 Klasse 4 ronde 4 Saturday 16 September 2023 +0–0=1 -3.6
KNSB competitie 2023-2024 Klasse 4 ronde 3 Saturday 16 September 2023 +0–0=1 -2.8
KNSB competitie 2023-2024 Klasse 4 ronde 1 Saturday 16 September 2023 +0–0=1
FSB-competitie 23-24 Beker halve finale Friday 1 September 2023 +0–0=1 +3.3
FSB-competitie 23-24 1e klasse ronde 7 Friday 1 September 2023 +0–0=1 -0.7
FSB-competitie 23-24 1e klasse ronde 6 Friday 1 September 2023 +0–0=1 -2.2
FSB-competitie 23-24 Beker ronde 3 Friday 1 September 2023 +1–0=0 +15.1
FSB-competitie 23-24 1e klasse ronde 5 Friday 1 September 2023 +0–1=0 -15.8
FSB-competitie 23-24 Beker ronde 2 Friday 1 September 2023 +1–0=0 +9.5
FSB-competitie 23-24 1e klasse ronde 4 Friday 1 September 2023 +1–1=0 -6.6
FSB-competitie 23-24 beker ronde 1 Friday 1 September 2023 +1–0=0 +7.4
FSB-competitie 23-24 1e klasse ronde 3 Friday 1 September 2023 +1–0=0 +6.6
FSB-competitie 23-24 1e klasse ronde 2 Friday 1 September 2023 +1–0=0
FSB-competitie 23-24 1e klasse ronde 1 Friday 1 September 2023 +0–0=1 -3.0
S.C. Heerenveen interne competitie 25-03-2024 t/m 13-05-2024 (010012) Monday 21 August 2023 +1–1=1 +3.4
S.C. Heerenveen interne competitie 29-01-2024 t/m 18-03-2024 (010012) Monday 21 August 2023 +0–0=3 -1.8
S.C. Heerenveen interne competitie 08-01-2024 t/m 22-01-2024 (010012) Monday 21 August 2023 +1–0=0 +15.7
S.C. Heerenveen interne competitie 27-11-2023 t/m 11-12-2023 (010012) Monday 21 August 2023 +0–0=1 -0.4
S.C. Heerenveen interne competitie 28-08-2023 t/m 20-11-2023 (010012) Monday 21 August 2023 +3–1=2 -19.4
FSB competitie 22-23 ronde 7 Saturday 1 October 2022 +1–0=0 +7.8
FSB competitie 22-23 Beker ronde 2 Saturday 1 October 2022 +0–1=0 -9.6
FSB competitie 22-23 ronde 5 Saturday 1 October 2022 +1–0=0 +4.9
FSB competitie 22-23 ronde 4 Saturday 1 October 2022 +1–0=0 +3.5
KNSB competitie 2022-2023 Klasse 4 ronde 9 Saturday 17 September 2022 +0–0=1 +3.5
KNSB competitie 2022-2023 Klasse 4 ronde 8 Saturday 17 September 2022 +1–0=0 +4.8
KNSB competitie 2022-2023 Klasse 4 ronde 7 Saturday 17 September 2022 +1–0=0 +6.5
KNSB competitie 2022-2023 Klasse 4 ronde 6 Saturday 17 September 2022 +0–1=0 -18.4
KNSB competitie 2022-2023 Klasse 4 ronde 4 Saturday 17 September 2022 +0–1=0 -5.2
S.C. Heerenveen interne competitie 27-03-2023 t/m 15-05-2023 (010012) Sunday 28 August 2022 +0–2=0 -19.7
S.C. Heerenveen interne competitie 30-01-2023 t/m 20-03-2023 (010012) Sunday 28 August 2022 +1–0=2 +1.7
S.C. Heerenveen interne competitie 02-01-2023 t/m 23-01-2023 (010012) Sunday 28 August 2022 +1–1=0 +2.7

Rating History

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Peak Ratings

Classic 1909 April 1, 2026
Rapid 1909 April 1, 2026
Blitz 1931 Jan. 1, 2026

Games

Wins 39
Losses 22
Draws 41
Win Rate 38%

Performance by Color

Color Wins Draws Losses Win Rate
White 17 13 11 41%
Black 22 28 11 36%

Recent Matches

Dekker, J. (Jos) (1877) Monday 20 April 2026 DRAW -1.1
Klaassen, W. (Wisse) (1737) Monday 16 March 2026 DRAW -4.9
Klein Essink, J. (Jeroen) (1849) Saturday 7 March 2026 WIN +11.3
Folbert, M. (Mark) (1913) Monday 2 March 2026 WIN +13.5
Holtrop, J.M. (Jan) (1895) Monday 16 February 2026 DRAW +0.9
Schuttel, D. (Derk) (1918) Friday 13 February 2026 WIN +14.2
Kruse, C. (Chris) (1745) Saturday 7 February 2026 LOSS -16.7
Klinkers, R.L. (Roelof) (1721) Monday 2 February 2026 WIN +7.6
Sevensma, F.W. (Frans) (1766) Monday 19 January 2026 WIN +9.2
Hoving, S.F. (Stefan) (1738) Monday 12 January 2026 WIN +8.3
Klaassen, W. (Wisse) (1722) Monday 1 December 2025 WIN +6.4
Spek van der, A. (Arthur) (1974) Monday 1 December 2025 DRAW +2.3
Pragt, A. (Arjen) (2032) Monday 1 December 2025 DRAW +4.2
Dam van, F. (Frans) (1689) Monday 1 December 2025 WIN +5.5
Akkerman, W. (Willem) (1608) Monday 1 December 2025 WIN +3.7
Spek van der, A. (Arthur) (1908) Monday 12 May 2025 DRAW +1.7
Velde, J. (Jan) (1931) Monday 14 April 2025 LOSS -9.8
Kompaan, R. (Rick) (1913) Monday 7 April 2025 DRAW +2.0
Brinkers, N. (Niklas) (1855) Saturday 5 April 2025 WIN +12.5
Popta van, H.D. (Hette) (1847) Monday 24 March 2025 LOSS -13.7