KNSB FIDE
GP

Gerard Potjer

Rated since January 2023

1736 Classic
1669 Rapid
1669 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
BOER DE, R.E. (ROBERT) 1925
6721 Waling Dijkstra Weekendtoernooi Groep A · Saturday 11 November 2023
BOER, J. (JAN) 1819
12595 KNSB competitie 2025-2026 Klasse 6 ronde 4 · Saturday 13 December 2025
GAY, A. (AURORE) 1713
13316 KNSB competitie 2025-2026 Klasse 6 ronde 5 · Saturday 28 March 2026
BOL, J. (JAN) 1695
7817 Chess Festival Groningen Vierkampen · Saturday 23 December 2023
HEUVEL VAN DEN, A. (ANNELIES) 1687
7102 Open Junivierkampen Groninger Combinatie Groep A · Thursday 22 June 2023
Worst losses
KAMPHORST, J.C. (JAN) 1533
7319 Nazomervierkampentoernooi 2023 Schaakclub Assen Groep A · Friday 25 August 2023
WERTER, P.G.A.J. (FLIP) 1546
12411 KNSB competitie 2025-2026 Klasse 6 Ronde 3 · Saturday 22 November 2025
HEIDINGA, F. (FRITS) 1583
6169 KNSB competitie 2022-2023 Klasse 5 ronde 3 · Saturday 26 November 2022
SLIEDRECHT, L.R. (RENS) 1623
6985 NOSBO competitie 2022-2023 April 2023 - beker · Monday 27 March 2023
SASSEN, P. (PELLE) 1656
8074 KNSB competitie 2023-2024 Klasse 6 ronde 4 · Saturday 16 December 2023
Chess Festival Groningen Vierkampen Thursday 21 December 2023 +2–1=0 +17.6
Nazomervierkampentoernooi 2023 Schaakclub Assen Groep A Friday 25 August 2023 +2–1=0 -4.1
KNSB competitie 2025-2026 Klasse 6 ronde 5 Saturday 20 September 2025 +2–0=0 +24.3
KNSB competitie 2025-2026 Klasse 6 ronde 7 Saturday 20 September 2025 +0–0=2 +1.3
KNSB competitie 2025-2026 Klasse 6 ronde 6 Saturday 20 September 2025 +0–1=0
KNSB competitie 2025-2026 Klasse 6 ronde 4 Saturday 20 September 2025 +1–0=0 +16.3
KNSB competitie 2025-2026 Klasse 6 Ronde 3 Saturday 20 September 2025 +0–1=0 -18.4
KNSB competitie 2025-2026 Klasse 6 ronde 2 Saturday 20 September 2025 +0–1=0
KNSB competitie 2025-2026 Klasse 6 ronde 1 Saturday 20 September 2025 +1–0=0
NOSBO competitie 2024-2025 December 2024 Monday 25 November 2024 +0–1=0 -11.5
KNSB competitie 2024-2025 Klasse 5 ronde 7 Saturday 21 September 2024 +0–0=1 -0.6
KNSB competitie 2024-2025 Klasse 5 ronde 6 Saturday 21 September 2024 +0–0=1 +6.2
KNSB competitie 2024-2025 Klasse 5 ronde 5 Saturday 21 September 2024 +0–1=0 -8.6
KNSB competitie 2024-2025 Klasse 5 ronde 4 Saturday 21 September 2024 +0–0=1 +0.9
KNSB competitie 2024-2025 Klasse 5 ronde 3 Saturday 21 September 2024 +0–1=0 -9.7
KNSB competitie 2024-2025 Klasse 5 ronde 2 Saturday 21 September 2024 +0–0=1 -5.5
KNSB competitie 2024-2025 Klasse 5 ronde 1 Saturday 21 September 2024 +0–1=0 -4.3
Open Junivierkampen Groninger Combinatie Groep A Wednesday 5 June 2024 +0–3=0 -35.2
Waling Dijkstra Weekendtoernooi Groep A Friday 10 November 2023 +2–3=0 +9.4
NOSBO-competitie 2023-2024 Mei 2024 Sunday 1 October 2023 +1–0=0
NOSBO-competitie 2023-2024 Januari 2024 Sunday 1 October 2023 +0–0=1 +0.3
KNSB competitie 2023-2024 Klasse 6 ronde 7 Saturday 16 September 2023 +0–1=0 -16.2
KNSB competitie 2023-2024 Klasse 6 ronde 5 Saturday 16 September 2023 +0–0=1 -7.3
KNSB competitie 2023-2024 Klasse 6 ronde 4 Saturday 16 September 2023 +0–1=0 -6.7
KNSB competitie 2023-2024 Klasse 6 ronde 3 Saturday 16 September 2023 +1–0=0 +0.3
Open Junivierkampen Groninger Combinatie Groep A Thursday 8 June 2023 +2–1=0 +16.2
Chess Festival Groningen Mini Wednesday 21 December 2022 +2–1=0 +12.4
NOSBO competitie 2022-2023 Juni 2023 - beker Monday 24 October 2022 +1–0=0 +13.7
NOSBO competitie 2022-2023 April 2023 - beker Monday 24 October 2022 +0–1=0 -13.7
NOSBO competitie 2022-2023 Januari 2023 - beker Monday 24 October 2022 +0–0=1 -2.3
KNSB competitie 2022-2023 Klasse 5 ronde 7 Saturday 17 September 2022 +1–0=0
KNSB competitie 2022-2023 Klasse 5 ronde 5 Saturday 17 September 2022 +1–0=0 +10.3
KNSB competitie 2022-2023 Klasse 5 ronde 4 Saturday 17 September 2022 +1–0=0 +8.0
KNSB competitie 2022-2023 Klasse 5 ronde 3 Saturday 17 September 2022 +0–1=0 -14.1

Rating History

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Peak Ratings

Classic 1810 March 1, 2024
Rapid 1669 March 1, 2026
Blitz 1669 March 1, 2026

Games

Wins 20
Losses 21
Draws 9
Win Rate 40%

Performance by Color

Color Wins Draws Losses Win Rate
White 15 5 12 47%
Black 5 4 9 28%

Recent Matches

Gay, A. (Aurore) (1713) Saturday 28 March 2026 WIN +12.2
Gay, A. (Aurore) (1713) Saturday 28 March 2026 WIN +12.2
Lapka, P. (Pawel) (1742) Saturday 7 March 2026 DRAW +0.7
Lapka, P. (Pawel) (1742) Saturday 7 March 2026 DRAW +0.7
Burgsma, A. (Auke) Saturday 7 February 2026 LOSS
Boer, J. (Jan) (1819) Saturday 13 December 2025 WIN +16.3
Werter, P.G.A.J. (Flip) (1546) Saturday 22 November 2025 LOSS -18.4
Tilburgs, M. (Mark) Saturday 1 November 2025 LOSS
Dellen van, B. (Boudewijn) Saturday 4 October 2025 WIN
Derksen, J. (Jan) (1709) Saturday 5 April 2025 DRAW -0.6
Hagen, S.C. (Carlijn) (1910) Saturday 8 March 2025 DRAW +6.2
Voorintholt, G.K. (Gerard) (1843) Saturday 8 February 2025 LOSS -8.6
Jorritsma, E.A. (Eli Alia) (1765) Saturday 14 December 2024 DRAW +0.9
Witkamp, T.F. (Theo) (1783) Thursday 28 November 2024 LOSS -11.5
Jong de, W.P.J. (Wietse) (1835) Saturday 23 November 2024 LOSS -9.7
Veltman, S. (Stefan) (1590) Saturday 9 November 2024 DRAW -5.5
Folkers, S. (Sono) (1871) Saturday 12 October 2024 LOSS -4.3
Sandburg, J. (Jelmer) (1812) Wednesday 19 June 2024 LOSS -11.9
Mostertman, J.L.H. (Johan) (1809) Thursday 13 June 2024 LOSS -12.0
Holtz, R.G. (Job) (1828) Thursday 6 June 2024 LOSS -11.3