KNSB FIDE
JB

Johan Bertelkamp

Rated since January 2023

1837 Classic
1817 Rapid
1817 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
VELZEN VAN, S. (SEM) 2065
13645 SGA Competitie 2025-2026 3e Klasse B ronde 1, 7 en 8 · Thursday 26 March 2026
INGEN VAN, R. (RIK) 1857
10470 Tata Steel Chess Tournament 2026 Tienkampen · Tuesday 27 January 2026
PELSER, A. (ABEL) 1830
10470 Tata Steel Chess Tournament 2026 Tienkampen · Wednesday 28 January 2026
MOSTERD, J. (JOHAN) 1788
10705 KNSB competitie 2024-2025 Klasse 5 ronde 6 · Saturday 8 March 2025
MELGERS, J.A. (JAAP) 1598
12265 KNSB competitie 2025-2026 Klasse 5 ronde 2 · Saturday 1 November 2025
Worst losses
BETTMAN, J. (JAN) 1711
7798 KNSB competitie 2023-2024 Klasse 4 ronde 3 · Saturday 4 November 2023
SOSEF, N.S. (NOAH) 1820
10470 Tata Steel Chess Tournament 2026 Tienkampen · Sunday 1 February 2026
LEMMEN, G. (GERRIT) 1828
10470 Tata Steel Chess Tournament 2026 Tienkampen · Saturday 31 January 2026
HAKVOORT, R.C. (REMY) 1865
9852 SGA Competitie 2024-2025 1e Klasse A ronde 2 en 3 · Thursday 21 November 2024
SAMPER, S. (SANTIAGO) 1891
11852 KNSB competitie 2025-2026 Klasse 4 ronde 1 · Saturday 20 September 2025
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +2–2=5 +12.1
SGA Competitie 2025-2026 3e Klasse B ronde 1, 7 en 8 Wednesday 1 October 2025 +1–0=0 +20.3
KNSB competitie 2025-2026 Klasse 4 ronde 6 Saturday 20 September 2025 +0–0=2 +3.5
KNSB competitie 2025-2026 Klasse 5 ronde 7 Saturday 20 September 2025 +0–0=2 +5.7
KNSB competitie 2025-2026 Klasse 3 Ronde 4 Saturday 20 September 2025 +0–1=0 -7.7
KNSB competitie 2025-2026 Klasse 5 ronde 2 Saturday 20 September 2025 +1–0=0 +5.9
KNSB competitie 2025-2026 Klasse 4 ronde 1 Saturday 20 September 2025 +0–1=0 -9.8
SGA Competitie 2024-2025 1e Klasse A ronde 2 en 3 Monday 30 September 2024 +0–1=0 -10.9
KNSB competitie 2024-2025 Klasse 5 ronde 6 Saturday 21 September 2024 +1–0=0 +12.1
KNSB competitie 2024-2025 Klasse 3 ronde 4 Saturday 21 September 2024 +0–1=0 -8.0
KNSB competitie 2023-2024 Klasse 6 ronde 6 Saturday 16 September 2023 +0–0=1 +2.9
KNSB competitie 2023-2024 Klasse 6 ronde 5 Saturday 16 September 2023 +0–0=1 -4.9
KNSB competitie 2023-2024 Klasse 4 ronde 3 Saturday 16 September 2023 +0–1=0 -12.5
KNSB competitie 2023-2024 Klasse 6 ronde 1 Saturday 16 September 2023 +1–0=0 +5.4

Rating History

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Peak Ratings

Classic 1837 May 1, 2026
Rapid 1817 May 1, 2026
Blitz 1817 May 1, 2026

Games

Wins 6
Losses 7
Draws 11
Win Rate 25%

Performance by Color

Color Wins Draws Losses Win Rate
White 4 5 3 33%
Black 2 6 4 17%

Recent Matches

Vries de, C. (Carel) (1863) Saturday 28 March 2026 DRAW +1.8
Vries de, C. (Carel) (1863) Saturday 28 March 2026 DRAW +1.8
Velzen van, S. (Sem) (2065) Thursday 26 March 2026 WIN +20.3
Bosch van den, R. (Rijk) (1895) Saturday 7 March 2026 DRAW +2.9
Bosch van den, R. (Rijk) (1895) Saturday 7 March 2026 DRAW +2.9
Sosef, N.S. (Noah) (1820) Sunday 1 February 2026 LOSS -11.8
Lemmen, G. (Gerrit) (1828) Saturday 31 January 2026 LOSS -11.5
Couwelaers, A.A.A. (Guus) (1852) Friday 30 January 2026 DRAW +1.8
Pelser, A. (Abel) (1830) Wednesday 28 January 2026 WIN +13.6
Ingen van, R. (Rik) (1857) Tuesday 27 January 2026 WIN +14.5
Heijink, R.C. (Rob) (1840) Monday 26 January 2026 DRAW +1.4
Schaffrath, C.K. (Claus) (1862) Sunday 25 January 2026 DRAW +2.2
Kazi, Z. (Zidan) (1812) Saturday 24 January 2026 DRAW +0.4
Donauer Daniel (1846) Friday 23 January 2026 DRAW +1.6
Broersma, H. (Henk) (1944) Saturday 22 November 2025 LOSS -7.7
Melgers, J.A. (Jaap) (1598) Saturday 1 November 2025 WIN +5.9
Samper, S. (Santiago) (1891) Saturday 20 September 2025 LOSS -9.8
Mosterd, J. (Johan) (1788) Saturday 8 March 2025 WIN +12.1
Kraker de, J.A. (Johnny) (1952) Saturday 23 November 2024 LOSS -8.0
Hakvoort, R.C. (Remy) (1865) Thursday 21 November 2024 LOSS -10.9