KNSB FIDE
RK

Ramon Koster

Rated since January 2023

2293 Classic
2290 Rapid
2416 Blitz

RIVALRY

Nemesis
Breukelman, H.J. (Jan)
Games: 3 · Win rate: 67%
Kryptonite
Winter de, A. (Arthur)
Games: 5 · Win rate: 0%

The good & the bad

Best wins
OOSTEROM VAN, C.D. (CHIEL) (IM) 2422
13142 Rapidkampioenschap Afdeling Oost Groep A · Saturday 2 May 2026
DELFT VAN, M. (MERIJN) (IM) 2381
NK-Snelschaken 2024 · Saturday 14 September 2024
BREUKELMAN, H.J. (JAN) (FM) 2380
12006 NK Snelschaak voor clubteams Groep A · Sunday 29 March 2026
LOPEZ, J.J. (JASEL JUSTO) (IM) 2368
9488 38ste Open Schaakkampioenschap van Spijkenisse Groep 1 · Saturday 30 November 2024
ELGERSMA, O.J. (ONNO) (FM) 2332
NK-Snelschaken 2024 · Saturday 14 September 2024
Worst losses
JANSEN, M. (MARIJN) 1868
NK-Snelschaken 2024 · Saturday 14 September 2024
MINDE, TIMOTHE 1880
Djerba International Chess Festival 2026 Blitz · Wednesday 11 February 2026
MAES, D.R. (DJAD) 1933
9488 38ste Open Schaakkampioenschap van Spijkenisse Groep 1 · Saturday 30 November 2024
KERKMEESTER, C.S. (CEDRIC) 1945
NK-Snelschaken 2024 · Saturday 14 September 2024
MOLENDIJK, P.B. (PIETER) 1952
NK-Snelschaken 2024 · Saturday 14 September 2024
KNSB competitie 2026-2027 Meesterklasse ronde 1 Saturday 19 September 2026 +0–1=0 -6.1
Maia Chess Open 2026 - Maia Masters Friday 21 August 2026 +5–3=1 -0.7
NK Snelschaak voor clubteams Groep A Sunday 29 March 2026 +16–2=3 +223.4
Djerba International Chess Festival 2026 Blitz Wednesday 11 February 2026 +5–4=0 -77.7
Djerba International Chess Festival 2026 Open A Saturday 7 February 2026 +5–2=2 +9.6
Chessfestival Groningen Open A Sunday 21 December 2025 +4–2=3 +17.0
XTX Markets London Chess Classic Open Wednesday 26 November 2025 +4–4=1 -21.5
UniClass Science Park Amsterdam Schaaktoernooi Groep A Saturday 5 July 2025 +4–0=5 +51.7
HSG Open 2025 Groep A Friday 20 June 2025 +3–1=1 -1.2
Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +0–2=0 -53.1
Chess Festival Groningen Open A Saturday 21 December 2024 +4–2=3 +6.7
NK-Snelschaken 2024 Saturday 14 September 2024 +15–6=5 -107.4
Maia Rapid Cup 2026 Tuesday 25 August 2026 +1–1=1 -38.0
Open Rapidkampioenschap van Amsterdam Groep A Sunday 14 June 2026 +3–2=1 -50.4
Rapidkampioenschap Afdeling Oost Groep A Saturday 2 May 2026 +6–0=1 +37.3
Fish 'n Food rapidtoernooi Groep A Saturday 18 April 2026 +3–3=1 -55.9
Rapid Schaaktoernooi Giessenburg Groep A Saturday 25 October 2025 +6–0=1 +68.6
KNSB competitie 2025-2026 Klasse 1 ronde 9 Saturday 20 September 2025 +0–1=0 -8.0
KNSB competitie 2025-2026 Klasse 1 ronde 6 Saturday 20 September 2025 +1–0=0 +2.2
KNSB competitie 2025-2026 KNSB Beker ronde 4 Saturday 20 September 2025 +0–0=1 -2.3
KNSB competitie 2025-2026 Klasse 1 ronde 8 Saturday 20 September 2025 +0–0=1 -2.4
KNSB competitie 2025-2026 Klasse 1 ronde 7 Saturday 20 September 2025 +1–0=0 +5.5
KNSB competitie 2025-2026 Klasse 1 ronde 5 Saturday 20 September 2025 +0–0=1 -2.6
KNSB competitie 2025-2026 Klasse 1 Ronde 4 Saturday 20 September 2025 +1–0=0 +8.1
KNSB competitie 2025-2026 Klasse 1 ronde 3 Saturday 20 September 2025 +0–0=1 +0.9
KNSB competitie 2025-2026 Klasse 1 ronde 2 Saturday 20 September 2025 +0–1=0 -20.3
KNSB competitie 2025-2026 Klasse 1 ronde 1 Saturday 20 September 2025 +0–0=1 -1.5
Maia Chess Open 2025 - Maia Masters Friday 22 August 2025 +4–3=2 -35.6
38ste Open Schaakkampioenschap van Spijkenisse Groep 1 Saturday 30 November 2024 +4–2=1 -14.4
KNSB competitie 2024-2025 Klasse 1 ronde 9 Saturday 21 September 2024 +0–0=1 -8.7
KNSB competitie 2024-2025 Klasse 1 ronde 8 Saturday 21 September 2024 +0–0=1 -3.8
KNSB competitie 2024-2025 Klasse 1 ronde 7 Saturday 21 September 2024 +0–0=1 +0.4
KNSB competitie 2024-2025 Klasse 1 ronde 6 Saturday 21 September 2024 +1–0=0 +11.3
KNSB competitie 2024-2025 Klasse 1 ronde 5 Saturday 21 September 2024 +0–0=1 +6.3
KNSB competitie 2024-2025 Klasse 1 ronde 4 Saturday 21 September 2024 +1–0=0 +26.8
KNSB competitie 2024-2025 Klasse 1 ronde 3 Saturday 21 September 2024 +0–0=1 +0.7
KNSB competitie 2024-2025 Klasse 1 ronde 2 Saturday 21 September 2024 +0–0=1 -8.6
KNSB competitie 2024-2025 Klasse 1 ronde 1 Saturday 21 September 2024 +1–0=0 +7.8
KNSB competitie 2023-2024 Klasse 1 ronde 9 Saturday 16 September 2023 +0–0=1 +10.5
KNSB competitie 2023-2024 Klasse 1 ronde 8 Saturday 16 September 2023 +1–0=0 +23.6
KNSB competitie 2023-2024 Klasse 1 ronde 7 Saturday 16 September 2023 +0–0=1 -9.1

Team Competition

Current team
VAS 1
Klasse 1A · 2025-2026 · 9 games
Past teams
VAS 1
Klasse 1A · 2024-2025
VAS 1
Klasse 1A · 2023-2024

Rating History

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Peak Ratings

Classic 2355 Feb. 1, 2025
Rapid 2397 Dec. 1, 2025
Blitz 2416 April 1, 2026

Games

Wins 99
Losses 42
Draws 45
Win Rate 53%

Performance by Color

Color Wins Draws Losses Win Rate
White 54 26 20 54%
Black 45 19 22 52%

Recent Matches

FM Dovgaliuk, O. (Oleksandr) (2370) Saturday 19 September 2026 LOSS -6.1
FM Goncalves, Samuel Jesus P (2252) Saturday 29 August 2026 LOSS -8.5
Gonzalez Pinar, Adrian (2103) Friday 28 August 2026 WIN +3.7
IM Janzelj, Tim (2416) Thursday 27 August 2026 LOSS -5.1
Gennari, Jacopo (2205) Wednesday 26 August 2026 WIN +5.6
Li, Harry (1994) Tuesday 25 August 2026 LOSS -26.6
Bernhoftsen-Banks, Alec (1966) Tuesday 25 August 2026 DRAW -12.0
Tribuzi, Carlos (1733) Tuesday 25 August 2026 WIN +0.6
FM Garcia Sobrino, David (2159) Tuesday 25 August 2026 WIN +4.7
CM Arvola, Daniel (2140) Monday 24 August 2026 DRAW -3.2
IM Haug, Havard (2436) Sunday 23 August 2026 LOSS -4.8
Woods, Yannick (2118) Saturday 22 August 2026 WIN +3.9
Kamp, Aaron (2063) Friday 21 August 2026 WIN +3.1
Omnes, T. (Tiago) (2007) Sunday 14 June 2026 LOSS -29.1
FM Vogel, J. (Jaap) (1984) Sunday 14 June 2026 DRAW -13.4
Dijk van, A.G. (Bram) (1958) Sunday 14 June 2026 WIN +2.3
Hoetink, S. (Simeon) (2052) Sunday 14 June 2026 LOSS -14.1
Haastert van, P. (Paul) (2001) Sunday 14 June 2026 WIN +3.0
Samala, G.G. (Gagan Gandiva) (1825) Sunday 14 June 2026 WIN +0.9
Mijnheer, P. (Peter) (2197) Saturday 2 May 2026 DRAW -6.8