KNSB FIDE
CI

Cees IJzermans

Rated since January 2023

2156 Classic
2156 Rapid
2214 Blitz

RIVALRY

Nemesis
Werf van der, J. (Joël)
Games: 3 · Win rate: 33%

The good & the bad

Best wins
RITZERVELD, N. (NOAH) (FM) 2221
10239 NK Snelschaken 2025 Groep A · Saturday 13 September 2025
GIJSEN, W. (WILLIAM) 2213
10239 NK Snelschaken 2025 Groep A · Saturday 13 September 2025
HOVENGA, A. (ALJE) 2209
8281 Tata Steel Chess Tournament 2025 Tienkampen · Friday 24 January 2025
WERF VAN DER, J. (JOËL) 2204
10239 NK Snelschaken 2025 Groep A · Saturday 13 September 2025
VELDEN VAN DER, A.J.L. (BRAM) (CM) 2202
8281 Tata Steel Chess Tournament 2025 Tienkampen · Tuesday 28 January 2025
Worst losses
MIGALKO, DMITRIY 1507
PRAGUE INTERNATIONAL CHESS FESTIVAL 2023 - FIDE open · Thursday 22 June 2023
TEIANU, M. (MAXIM) 1917
NK-Snelschaken 2024 · Saturday 14 September 2024
WIT DE, C. (COR) 1954
NK-Snelschaken 2024 · Saturday 14 September 2024
PATHAK, R. (RAGHAV) 1963
NK-Snelschaken 2024 · Saturday 14 September 2024
SCHRÖER, M.J. (MARCEL) 2024
NK-Snelschaken 2024 · Saturday 14 September 2024
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +3–2=2 +3.7
NK Snelschaken 2025 Groep A Saturday 13 September 2025 +16–7=3 +102.9
10e Goirle Weekend Kampioenschap Groep A Friday 22 August 2025 +2–1=3 -3.0
Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +4–2=3 +25.4
NK-Snelschaken 2024 Saturday 14 September 2024 +14–10=2 -31.6
PRAGUE INTERNATIONAL CHESS FESTIVAL 2023 - FIDE open Thursday 22 June 2023 +4–3=1 -11.3
NBSB Avondcompetitie 2025-2026 Ronde 3 Monday 22 September 2025 +0–0=1 -6.7
KNSB competitie 2025-2026 Klasse 4 ronde 5 Saturday 20 September 2025 +1–0=0 +5.0
KNSB competitie 2025-2026 Klasse 4 Ronde 4 Saturday 20 September 2025 +1–0=0 +4.6
KNSB competitie 2025-2026 Klasse 4 ronde 3 Saturday 20 September 2025 +0–0=1 -8.4
KNSB competitie 2025-2026 Klasse 4 ronde 2 Saturday 20 September 2025 +1–0=0 +1.3
KNSB competitie 2025-2026 Klasse 4 ronde 1 Saturday 20 September 2025 +1–0=0 +8.0
NBSB Avondcompetitie 2024-2025 Ronde 7 Monday 30 September 2024 +0–0=1 -5.2
NBSB Avondcompetitie 2024-2025 Ronde 6 Monday 30 September 2024 +1–0=0 +4.4
NBSB Avondcompetitie 2024-2025 Ronde 3 Monday 30 September 2024 +0–1=0 -12.1
NBSB Avondcompetitie 2024-2025 Ronde 1 Monday 30 September 2024 +1–0=0 +5.7
KNSB competitie 2024-2025 Klasse 2 ronde 9 Saturday 21 September 2024 +0–0=1 -1.9
KNSB competitie 2024-2025 Klasse 2 ronde 8 Saturday 21 September 2024 +1–0=0 +11.2
KNSB competitie 2024-2025 Klasse 2 ronde 7 Saturday 21 September 2024 +0–1=0 -5.7
KNSB competitie 2024-2025 Klasse 2 ronde 6 Saturday 21 September 2024 +1–0=0 +5.2
KNSB competitie 2024-2025 Klasse 2 ronde 5 Saturday 21 September 2024 +0–1=0 -15.0
KNSB competitie 2024-2025 Klasse 2 ronde 4 Saturday 21 September 2024 +0–1=0 -11.3
KNSB competitie 2024-2025 Klasse 2 ronde 3 Saturday 21 September 2024 +1–0=0 +9.4
KNSB competitie 2024-2025 Klasse 2 ronde 2 Saturday 21 September 2024 +1–0=0 +11.3
KNSB competitie 2024-2025 Klasse 2 ronde 1 Saturday 21 September 2024 +0–1=0 -11.4
Snelschaak Teams (tijdens NK 2024) Saturday 13 July 2024 +12–4=1 +2.5
NBSB Competitie 2023/2024 2e helft Groep A Sunday 24 December 2023 +0–0=1 -4.6
KNSB competitie 2023-2024 Klasse 2 ronde 9 Saturday 16 September 2023 +0–0=1 +0.8
KNSB competitie 2023-2024 Klasse 2 ronde 8 Saturday 16 September 2023 +0–0=1 +1.0
KNSB competitie 2023-2024 Klasse 2 ronde 7 Saturday 16 September 2023 +0–0=1 -4.8
KNSB competitie 2023-2024 Klasse 2 ronde 6 Saturday 16 September 2023 +0–0=1 +4.9
KNSB competitie 2023-2024 Klasse 2 ronde 5 Saturday 16 September 2023 +1–0=0 +6.2
KNSB competitie 2023-2024 Klasse 2 ronde 4 Saturday 16 September 2023 +1–0=0 +6.3
KNSB competitie 2023-2024 Klasse 2 ronde 1 Saturday 16 September 2023 +0–0=1 -2.0
NBSB competitie 2023/2024 Groep A Friday 1 September 2023 +2–0=0 +8.2
NBSB competitie 2023 Groep A Sunday 1 January 2023 +0–0=1 -3.9
KNSB competitie 2022-2023 Beker ronde 5 Saturday 17 September 2022 +0–1=0 -6.5
KNSB competitie 2022-2023 Beker ronde 4 Saturday 17 September 2022 +1–0=0 +11.1
KNSB competitie 2022-2023 Klasse 2 ronde 7 Saturday 17 September 2022 +1–0=0 +3.3
KNSB competitie 2022-2023 Klasse 2 ronde 6 Saturday 17 September 2022 +1–0=0 +7.3
KNSB competitie 2022-2023 Beker ronde 3 Saturday 17 September 2022 +0–1=0 -14.3
KNSB competitie 2022-2023 Klasse 2 ronde 4 Saturday 17 September 2022 +1–0=0 +7.4
NBSB Competitie Groep A Wednesday 14 September 2022 +3–0=0 +27.0

Rating History

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Peak Ratings

Classic 2157 Nov. 1, 2025
Rapid 2156 March 1, 2026
Blitz 2214 Oct. 1, 2025

Games

Wins 76
Losses 36
Draws 26
Win Rate 55%

Performance by Color

Color Wins Draws Losses Win Rate
White 35 12 21 51%
Black 41 14 15 59%

Recent Matches

Werf van der, J. (Joël) (2202) Friday 30 January 2026 DRAW +1.6
WFM Stefan, Iulia-Cristiana (2128) Wednesday 28 January 2026 WIN +10.5
Beukema, C.R.A. (Constantijn) (2040) Tuesday 27 January 2026 WIN +7.8
Oosterlaken, E. (Ed) (2081) Monday 26 January 2026 LOSS -13.4
CM Lagemaat van de, A.G. (Arend) (2104) Sunday 25 January 2026 LOSS -12.7
Stap, C.R.M. (Kees) (2092) Saturday 24 January 2026 DRAW -1.9
Guillaumond, M. (Matthieu) (2173) Friday 23 January 2026 WIN +11.9
Canedo jr., J.M. (Jesus) (1929) Saturday 13 December 2025 WIN +5.0
Havermans, J. (Jorrit) (1926) Saturday 22 November 2025 WIN +4.6
Opstal van, T. (Thijs) (1915) Friday 14 November 2025 DRAW -6.7
Flikweert, H. (Henry) (1821) Saturday 1 November 2025 DRAW -8.4
Pals, D. (Daan) (1706) Saturday 4 October 2025 WIN +1.3
Versporten, W. (Wim) (2042) Saturday 20 September 2025 WIN +8.0
FM Smeets, K. (Kobe) (2346) Saturday 13 September 2025 LOSS -5.0
FM Wissen van, M.E. (Michiel) (2213) Saturday 13 September 2025 DRAW +3.4
Gijsen, W. (William) (2213) Saturday 13 September 2025 WIN +15.6
FM Kurt, S. (Sascha) (2117) Saturday 13 September 2025 WIN +12.4
CM Dinanath, H. (Hrdya) (2112) Saturday 13 September 2025 WIN +12.3
Meulmeester, L. (Luuk) (1977) Saturday 13 September 2025 WIN +7.8
FM Ritzerveld, N. (Noah) (2221) Saturday 13 September 2025 WIN +15.9