KNSB FIDE
CM

Conrad Mostertman

Rated since January 2023

1914 Classic

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
KONING, E. (ERWIN) 1889
12265 KNSB competitie 2025-2026 Klasse 5 ronde 2 · Saturday 1 November 2025
MEER VAN DER, H.J. (HENK) 1856
12594 KNSB competitie 2025-2026 Klasse 5 ronde 4 · Saturday 13 December 2025
DERKSEN, J. (JAN) 1651
12900 S.C. Haren interne competitie 16-01-2026 t/m 16-01-2026 (020012) · Friday 16 January 2026
BOUWMAN, E. (EMILE) 1200
12106 S.C. Haren interne competitie 05-09-2025 t/m 10-10-2025 (020012) · Friday 19 September 2025
Worst losses
KOLIJN, D. (DAVID) 1938
12992 KNSB competitie 2025-2026 Klasse 5 ronde 6 · Saturday 7 February 2026
No FIDE-rated tournaments found.
S.C. Haren interne competitie 16-01-2026 t/m 16-01-2026 (020012) Thursday 1 January 2026 +1–0=0 +4.2
KNSB competitie 2025-2026 Klasse 5 ronde 6 Saturday 20 September 2025 +0–1=0 -12.2
KNSB competitie 2025-2026 Klasse 5 ronde 4 Saturday 20 September 2025 +1–0=0 +10.5
KNSB competitie 2025-2026 Klasse 5 ronde 2 Saturday 20 September 2025 +1–0=0 +12.1
KNSB competitie 2025-2026 Klasse 5 ronde 1 Saturday 20 September 2025 +0–0=1 +0.1
S.C. Haren interne competitie 05-09-2025 t/m 10-10-2025 (020012) Friday 5 September 2025 +1–0=3 -21.7
S.C. Haren interne competitie 06-06-2025 t/m 06-06-2025 (020012) Friday 20 September 2024 +1–0=0

Rating History

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Peak Ratings

Classic 1940 March 1, 2025
Rapid 1914 March 1, 2026
Blitz 1914 March 1, 2026

Games

Wins 5
Losses 1
Draws 4
Win Rate 50%

Performance by Color

Color Wins Draws Losses Win Rate
White 0 3 1 0%
Black 5 1 0 83%

Recent Matches

Kolijn, D. (David) (1938) Saturday 7 February 2026 LOSS -12.2
Derksen, J. (Jan) (1651) Friday 16 January 2026 WIN +4.2
Meer van der, H.J. (Henk) (1856) Saturday 13 December 2025 WIN +10.5
Koning, E. (Erwin) (1889) Saturday 1 November 2025 WIN +12.1
Romijn, K. (Kees) (1800) Friday 10 October 2025 DRAW -4.2
Heikamp, H. (Hendrik) (1927) Saturday 4 October 2025 DRAW +0.1
Goedhart, M.J. (Martin) (1678) Friday 26 September 2025 DRAW -7.6
Bouwman, E. (Emile) (1200) Friday 19 September 2025 WIN +0.1
Bemt van den, W. (Wicher) (1557) Friday 5 September 2025 DRAW -10.0
Beijer, S.L. (Simon) Friday 6 June 2025 WIN