PK

Pieter Koppelaar

Rated since January 2023

1805 Classic
1823 Rapid
1823 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
ENGELEN, R.J.H. (RONALD) 1928
9650 SOS Competitie 2024/2025 2025-01 · Tuesday 7 January 2025
EIJK VAN, D. (DRIES) 1829
8834 OSBO Cup 2023/2024 OSBO Cup 2023/2024 · Saturday 13 April 2024
POEL VAN DER, J. (JEROEN) 1799
12052 SOS competitie 2025/2026 Lijst 1 Dec · Friday 7 November 2025
KONECNY, L. (LORENS) 1702
12052 SOS competitie 2025/2026 Lijst 1 Dec · Friday 21 November 2025
HAM VAN, W. (WILBERT) 1698
5711 SOS Competitie 2022/2023 December 2022 · Tuesday 6 December 2022
Worst losses
MARRES, O.P.J. (ONNO) 1553
5716 SOS Competitie 2022/2023 Mei · Tuesday 16 May 2023
LAANEN VAN, T. (THEI) 1555
8098 SOS Competitie 2023/2024 Januari 2024 · Tuesday 9 January 2024
MARK VAN DER, C. (NIELS) 1683
5713 SOS Competitie 2022/2023 Februari 2023 · Tuesday 24 January 2023
BLOM, H.J. (HUUB) 1778
10796 OSBO Cup 2024-2025 maart 2025 · Tuesday 11 March 2025
ZOLLINGER, R. (RONALD) 1818
12777 SOS competitie 2025/2026 Lijst 1 mei · Monday 13 April 2026
No FIDE-rated tournaments found.
OSBO-Cup 2025/2026 Groep A Monday 1 December 2025 +0–1=0 -8.9
SOS competitie 2025/2026 Lijst 1 mei Monday 1 September 2025 +0–1=0 -18.3
SOS competitie 2025/2026 Lijst 1 apr Monday 1 September 2025 +0–0=1 +5.4
SOS competitie 2025/2026 Lijst 1 feb Monday 1 September 2025 +0–0=1 +3.5
SOS competitie 2025/2026 Lijst 1 Dec Monday 1 September 2025 +2–0=0 +34.7
SOS competitie 2025/2026 Lijst 1 Nov Monday 1 September 2025 +0–0=1 +5.7
OSBO Cup 2024-2025 maart 2025 Sunday 1 December 2024 +0–1=0 -24.4
SOS Competitie 2024/2025 2025-04 Sunday 1 September 2024 +0–1=0 -14.8
SOS Competitie 2024/2025 2025-03 Sunday 1 September 2024 +0–1=0 -18.8
SOS Competitie 2024/2025 2025-02 Sunday 1 September 2024 +0–1=0 -9.1
SOS Competitie 2024/2025 2025-01 Sunday 1 September 2024 +1–0=0 +27.9
SOS Competitie 2024/2025 2024-12 Sunday 1 September 2024 +1–0=0 +18.9
SOS Competitie 2024/2025 2024-10 Sunday 1 September 2024 +0–1=0 -19.6
OSBO Cup 2023/2024 OSBO Cup 2023/2024 Wednesday 1 November 2023 +1–1=0 +2.3
OSBO Cup 2023/2024 Kwartfinales ex SMB en Rhenen Wednesday 1 November 2023 +1–0=0 +20.4
SOS Competitie 2023/2024 Maart 2024 Friday 1 September 2023 +1–0=0 +17.3
SOS Competitie 2023/2024 Februari 2024 Friday 1 September 2023 +1–0=0 +14.4
SOS Competitie 2023/2024 Januari 2024 Friday 1 September 2023 +0–1=0 -33.6
SOS Competitie 2023/2024 December 2023 Friday 1 September 2023 +1–0=0 +30.6
SOS Competitie 2023/2024 November 2023 Friday 1 September 2023 +1–0=0 +10.0
SOS Competitie 2023/2024 Oktober 2023 Friday 1 September 2023 +1–0=0 +10.6
SOS Competitie 2023/2024 September 2023 Friday 1 September 2023 +1–0=0 +32.9
SOS Competitie 2022/2023 Mei Monday 12 September 2022 +0–1=0 -36.0
SOS Competitie 2022/2023 April 2023(K2) Monday 12 September 2022 +1–0=0 +24.6
SOS Competitie 2022/2023 Maart 2023(K2) Monday 12 September 2022 +1–0=0
SOS Competitie 2022/2023 Februari 2023 Monday 12 September 2022 +0–1=1 -11.9
SOS Competitie 2022/2023 December 2022 Monday 12 September 2022 +1–0=0 +54.0

Team Competition

Current team
Velp 1
1C · 2025-2026 · 6 games
Past teams
Theothorne 1
2B · 2024-2025
Theothorne 1
2B · 2023-2024
Theothorne 1
2D · 2022-2023
Theothorne 1
3D · 2021-2022

Rating History

Loading rating history...

Peak Ratings

Classic 1850 Feb. 1, 2025
Rapid 1823 April 1, 2026
Blitz 1823 April 1, 2026

Games

Wins 15
Losses 11
Draws 4
Win Rate 50%

Performance by Color

Color Wins Draws Losses Win Rate
White 7 3 7 41%
Black 8 1 4 62%

Recent Matches

Zollinger, R. (Ronald) (1818) Monday 13 April 2026 LOSS -18.3
Tienhoven van, R.M. (Richard) (1926) Monday 9 March 2026 DRAW +5.4
Fassaert, D.J.M. (Désiré) (1883) Tuesday 20 January 2026 DRAW +3.5
Jurrius, T. (Theo) (2028) Thursday 18 December 2025 LOSS -8.9
Konecny, L. (Lorens) (1702) Friday 21 November 2025 WIN +14.8
Poel van der, J. (Jeroen) (1799) Friday 7 November 2025 WIN +19.9
Eskif, M.M. (Muhammed) (1888) Thursday 9 October 2025 DRAW +5.7
Haver, S.J. (Sjoerd) (1894) Friday 11 April 2025 LOSS -14.8
Pest te, Y.G.L. (Yannick) (1876) Tuesday 18 March 2025 LOSS -18.8
Blom, H.J. (Huub) (1778) Tuesday 11 March 2025 LOSS -24.4
Schleipfenbauer, F. (Frank) (2075) Monday 3 February 2025 LOSS -9.1
Engelen, R.J.H. (Ronald) (1928) Tuesday 7 January 2025 WIN +27.9
Eijk van, D. (Dries) (1752) Friday 29 November 2024 WIN +18.9
Gessel van, R. (Raymond) (1870) Tuesday 8 October 2024 LOSS -19.6
Bakker, T. (Thijmen) (1848) Tuesday 30 April 2024 LOSS -21.8
Eijk van, D. (Dries) (1829) Saturday 13 April 2024 WIN +24.1
Noordhuis, P. (Piet) (1672) Thursday 7 March 2024 WIN +17.3
Eekhout, B. (Byron) (1459) Tuesday 6 February 2024 WIN +14.4
Berg van den, H.M. (Henk) (1577) Friday 26 January 2024 WIN +20.4
Laanen van, T. (Thei) (1555) Tuesday 9 January 2024 LOSS -33.6