KNSB FIDE
CR

Cas Roorda

Rated since January 2023

2082 Classic
2074 Rapid
2082 Blitz

RIVALRY

Nemesis
Kruit, E.A. (Erik)
Games: 4 · Win rate: 50%
Kryptonite
Sparenberg, E. (Erik)
Games: 6 · Win rate: 0%
Easy Target
Wit de, E. (Evan)
Games: 6 · Win rate: 67%

The good & the bad

Best wins
JONG DE, M. (MIGCHIEL) (IM) 2263
9103 Philidor 1847 play-off 2024 Groep A · Tuesday 21 May 2024
SPRANGERS, R. (REMCO) (CM) 2201
8804 KNSB competitie 2023-2024 Klasse 1 ronde 9 · Saturday 20 April 2024
HANIA, J. (JAN) 2181
9666 K.S.C. Philidor 1847 interne competitie 01-10-2024 t/m 22-10-2024 (010026) · Tuesday 15 October 2024
KUMMEROW, HEIKO (FM) 2156
8283 Tata Steel Chess Tournament 2025 Weekendvierkampen · Friday 17 January 2025
PLASMAN, J.A. (HANS) 2141
11019 KNSB competitie 2024-2025 Klasse 2 ronde 8 · Saturday 5 April 2025
Worst losses
FREDERIKS, J. (JESSE) 1510
7199 NJSK C jeugd · Monday 1 May 2023
GERGIN, I. (ISAFARA) 1537
6254 Chess Festival Groningen Mini · Thursday 22 December 2022
HENCKENS, E. (ELOF) 1547
7864 Kwalificatie 1 NK ABC B groep · Saturday 18 November 2023
STEGEMAN, D. (DERK) 1565
6324 K.S.C. Philidor 1847 interne competitie 30-11-2022 t/m 20-12-2022 (010026) · Wednesday 14 December 2022
OKITA, S. (SHINSAKU) 1680
7864 Kwalificatie 1 NK ABC B groep · Sunday 19 November 2023
Tata Steel Chess Tournament 2025 Weekendvierkampen Friday 17 January 2025 +2–1=0 +27.8
Chess Festival Groningen Vierkampen Saturday 21 December 2024 +1–1=1 +0.0
Chess Festival Groningen Vierkampen Thursday 21 December 2023 +2–0=1 +34.2
FK Rapid voor teams 2025 - Saturday 22 March 2025 +6–0=1 +64.4
K.S.C. Philidor 1847 interne competitie 27-05-2025 t/m 27-05-2025 (0… Monday 3 March 2025 +1–0=0 +20.2
K.S.C. Philidor 1847 interne competitie 04-03-2025 t/m 21-05-2025 (0… Monday 3 March 2025 +5–1=0 +79.7
Kwalificatie NK ABC 3 Groep B Saturday 22 February 2025 +3–2=2 -44.3
NOSBO JCC Maart 2025 Wednesday 1 January 2025 +1–0=0 +9.6
KNSB-Jeugdclubcompetitie 4, AC Groep A en C Saturday 7 December 2024 +0–1=0 -29.2
KNSB-Jeugdclubcompetitie 2, AC Groep A Saturday 5 October 2024 +1–0=0 +13.1
KNSB competitie 2024-2025 Klasse 2 ronde 9 Saturday 21 September 2024 +0–1=0 -14.4
KNSB competitie 2024-2025 Klasse 2 ronde 8 Saturday 21 September 2024 +1–0=0 +28.3
KNSB competitie 2024-2025 Klasse 2 ronde 7 Saturday 21 September 2024 +1–0=0 +18.2
KNSB competitie 2024-2025 Klasse 2 ronde 6 Saturday 21 September 2024 +1–0=0 +15.2
KNSB competitie 2024-2025 Klasse 2 ronde 5 Saturday 21 September 2024 +0–1=0 -32.6
KNSB competitie 2024-2025 Klasse 2 ronde 4 Saturday 21 September 2024 +1–0=0 +14.3
KNSB competitie 2024-2025 Klasse 2 ronde 3 Saturday 21 September 2024 +0–1=0 -28.1
KNSB competitie 2024-2025 Klasse 2 ronde 2 Saturday 21 September 2024 +0–0=1 +2.5
KNSB competitie 2024-2025 Klasse 2 ronde 1 Saturday 21 September 2024 +0–0=1 -0.6
K.S.C. Philidor 1847 interne competitie 28-01-2025 t/m 18-02-2025 (0… Monday 9 September 2024 +1–1=1 -17.1
K.S.C. Philidor 1847 interne competitie 07-01-2025 t/m 14-01-2025 (01… Monday 9 September 2024 +1–0=1 +9.4
K.S.C. Philidor 1847 interne competitie 03-12-2024 t/m 17-12-2024 (0… Monday 9 September 2024 +0–0=1 -3.7
K.S.C. Philidor 1847 interne competitie 29-10-2024 t/m 19-11-2024 (010026) Monday 9 September 2024 +1–1=1 +2.0
K.S.C. Philidor 1847 interne competitie 01-10-2024 t/m 22-10-2024 (010026) Monday 9 September 2024 +1–0=0 +27.2
K.S.C. Philidor 1847 interne competitie 10-09-2024 t/m 24-09-2024 (010026) Monday 9 September 2024 +2–0=1 +42.1
FSB-competitie 24-25 ronde 7 hoofdklasse Sunday 1 September 2024 +0–1=0 -17.4
FSB-competitie 24-25 ronde 6 hoofdklasse Sunday 1 September 2024 +0–0=1 +3.5
FSB-competitie 24-25 ronde 5 hoofdklasse Sunday 1 September 2024 +0–1=0 -21.3
FSB-competitie 24-25 FSB-beker ronde 3 Sunday 1 September 2024 +0–1=0 -32.3
FSB-competitie 24-25 ronde 4 hoofdklasse Sunday 1 September 2024 +0–1=0 -17.6
FSB-competitie 24-25 FSB-beker ronde 2 Sunday 1 September 2024 +1–0=0 +8.0
FSB-competitie 24-25 ronde 3 hoofdklasse Sunday 1 September 2024 +0–0=1 +5.2
FSB-competitie 24-25 FSB-competitie 24-25 ronde 2 hoofdklasse Sunday 1 September 2024 +0–0=1 -1.3
FSB-competitie 24-25 FSB-beker 24-25 ronde 1 Sunday 1 September 2024 +1–0=0 +4.1
FSB-competitie 24-25 Groep A Sunday 1 September 2024 +1–0=0 +16.7
Fries Kampioenschap Groep A Tuesday 11 June 2024 +4–2=1 +6.6
NJSK Jeugd C Saturday 27 April 2024 +4–4=1 +42.7
Philidor 1847 play-off 2024 Groep A Tuesday 19 March 2024 +2–4=1 +17.1
FKjeugd2024 C Monday 19 February 2024 +5–0=1 +17.3
Kwalificatie NK ABC 3 Jeugd B Saturday 10 February 2024 +3–2=2 -22.3
KNSB-Jeugdclubcompetitie 4, AC Finale A en C Saturday 9 December 2023 +0–1=1 +0.2
Kwalificatie 1 NK ABC B groep Saturday 18 November 2023 +3–3=1 -89.4
Waling Dijkstra Weekendtoernooi Groep A Friday 10 November 2023 +3–2=1 +8.4
NOSBO FSB jeugd 2023-2024 Juni 2024 Wednesday 1 November 2023 +1–0=0 +10.2
KNSB-Jeugdclubcompetitie 2, AC Groep AC Saturday 30 September 2023 +1–1=0 +27.2
KNSB-Jeugdclubcompetitie 1, AC Groep A Saturday 23 September 2023 +1–0=1 +0.7
KNSB competitie 2023-2024 Klasse 1 ronde 9 Saturday 16 September 2023 +1–0=0 +35.4
KNSB competitie 2023-2024 Klasse 3 ronde 8 Saturday 16 September 2023 +0–1=0 -13.5
KNSB competitie 2023-2024 Klasse 3 ronde 7 Saturday 16 September 2023 +1–0=0 +26.2
KNSB competitie 2023-2024 Klasse 1 ronde 5 Saturday 16 September 2023 +0–1=0 -8.4
KNSB competitie 2023-2024 Klasse 1 ronde 3 Saturday 16 September 2023 +0–1=0 -8.6
KNSB competitie 2023-2024 Klasse 3 ronde 2 Saturday 16 September 2023 +0–1=0 -16.0
KNSB competitie 2023-2024 Klasse 3 ronde 1 Saturday 16 September 2023 +0–0=1 -6.5
K.S.C. Philidor 1847 interne competitie 09-01-2024 t/m 23-01-2024 (010026) Tuesday 12 September 2023 +0–0=1 -2.1
K.S.C. Philidor 1847 interne competitie 28-11-2023 t/m 12-12-2023 (010026) Tuesday 12 September 2023 +0–2=1 -10.8
K.S.C. Philidor 1847 interne competitie 31-10-2023 t/m 21-11-2023 (010026) Tuesday 12 September 2023 +0–1=0 -4.4
K.S.C. Philidor 1847 interne competitie 26-09-2023 t/m 24-10-2023 (010026) Tuesday 12 September 2023 +0–1=1 -7.4
K.S.C. Philidor 1847 interne competitie 12-09-2023 t/m 19-09-2023 (010026) Tuesday 12 September 2023 +2–0=0 +43.2
FSB-competitie 23-24 Beker finale correctie Friday 1 September 2023 +0–0=1 +5.9
FSB-competitie 23-24 hoofdklasse ronde 7 Friday 1 September 2023 +1–0=0 +27.8
FSB-competitie 23-24 Beker halve finale Friday 1 September 2023 +1–0=0 +21.8
FSB-competitie 23-24 hoofdklasse ronde 6 Friday 1 September 2023 +0–0=1 +7.2
FSB-competitie 23-24 Beker ronde 3 Friday 1 September 2023 +0–0=1 -14.6
K.S.C. Philidor 1847 interne competitie 30-01-2024 t/m 12-03-2024 (010026) Friday 1 September 2023 +1–0=1 +11.0
FSB-competitie 23-24 hoofdklasse ronde 5 Friday 1 September 2023 +0–1=0 -11.5
FSB-competitie 23-24 Beker ronde 2 Friday 1 September 2023 +0–1=0 -18.7
FSB-competitie 23-24 hoofdklasse ronde 4 Friday 1 September 2023 +0–1=0 -19.2
FSB-competitie 23-24 hoofdklasse ronde 3. Friday 1 September 2023 +0–0=1 +4.0
FSB-competitie 23-24 hoofdklasse ronde 2 Friday 1 September 2023 +0–0=1 -2.0
FSB-competitie 23-24 Beker ronde 1 Friday 1 September 2023 +1–0=0 +12.9
FSB-competitie 23-24 hoofdklasse ronde 1 Friday 1 September 2023 +1–0=0 +18.2
Staunton Grand Pre-Season toernooi Groep A Tuesday 29 August 2023 +4–0=1 -13.3
Fries Kampioenschap Groep A Tuesday 20 June 2023 +3–3=0 -25.5
NJSK C jeugd Friday 21 April 2023 +3–4=2 -109.3
K.S.C. Philidor 1847 interne competitie 04-04-2023 t/m 16-05-2023 (010026) Tuesday 4 April 2023 +2–0=1 +43.7
Lentecompetitie Philidor Groep A Tuesday 7 March 2023 +0–0=3 -3.6
playoffs philidor Ronde 1 t/m n Tuesday 7 March 2023 +1–1=2 +49.3
Fries Kampioenschap Jeugd AB Monday 27 February 2023 +5–0=1 +6.6
82e Noteboomtoernooi Groep B Friday 24 February 2023 +2–2=1 +11.6
NJK kwalificatietoernooi 3 Groep B jeugd Saturday 18 February 2023 +5–0=2 +132.3
NOSBO FSB 2022-2023 NJC- Juni Sunday 1 January 2023 +0–1=0 -14.4
NOSBO FSB 2022-2023 NJC NJC - April Sunday 1 January 2023 +1–0=0 +0.1
NOSBO FSB 2022-2023 NJC NJC - Maart Sunday 1 January 2023 +1–0=0 +5.4
NOSBO FSB 2022-2023 NJC NJC - Februari Sunday 1 January 2023 +1–0=0 +8.3
Chess Festival Groningen Mini Wednesday 21 December 2022 +1–1=1 -11.3
K.S.C. Philidor 1847 interne competitie 30-11-2022 t/m 20-12-2022 (010026) Sunday 27 November 2022 +0–4=0 -61.4
FSB competitie 22-23 ronde 7 Saturday 1 October 2022 +1–0=0 +24.7
FSB competitie 22-23 ronde 6 Saturday 1 October 2022 +0–0=1 +11.5
FSB competitie 22-23 Beker ronde 2 Saturday 1 October 2022 +0–0=1 +9.9
FSB competitie 22-23 ronde 5 Saturday 1 October 2022 +1–0=0
KNSB-Jeugdclubcompetitie 2, AC+D halve finales Meesterklasse A en C Saturday 1 October 2022 +2–0=0 +71.8
KNSB competitie 2022-2023 Klasse 4 ronde 9 Saturday 17 September 2022 +0–1=0 -21.4
KNSB competitie 2022-2023 Klasse 4 ronde 8 Saturday 17 September 2022 +1–0=0 +13.5
KNSB competitie 2022-2023 Klasse 4 ronde 6 Saturday 17 September 2022 +0–0=1 +3.7
KNSB competitie 2022-2023 Klasse 4 ronde 5 Saturday 17 September 2022 +0–0=1 -6.8
KNSB competitie 2022-2023 Klasse 4 ronde 4 Saturday 17 September 2022 +0–1=0 -12.9
K.S.C. Philidor 1847 interne competitie 27-12-2022 t/m 21-02-2023 (010026) Tuesday 13 September 2022 +1–2=2 -0.5
K.S.C. Philidor 1847 interne competitie 02-11-2022 t/m 23-11-2022 (010026) Tuesday 13 September 2022 +0–0=2 +5.1

Team Competition

Current teams
Philidor
Beker · 2024-2025 · 3 games
Philidor 1
Hoofdklasse · 2024-2025 · 7 games
Philidor 1847 1
Klasse 2A · 2024-2025 · 9 games
Past teams
Philidor 1
Hoofdklasse · 2023-2024
Philidor 1847
Beker · 2023-2024
Philidor 1847 1
Klasse 1B · 2023-2024
Philidor 1847 2
Klasse 3A · 2023-2024
Philidor 1847 2
Klasse 4A · 2022-2023
Philidor 3
Beker · 2022-2023
Philidor 3
Klasse 2A · 2022-2023
Philidor 1847 3
Klasse 5A · 2021-2022

Rating History

Loading rating history...

Peak Ratings

Classic 2109 Nov. 1, 2024
Rapid 2074 April 1, 2025
Blitz 2082 March 1, 2026

Games

Wins 106
Losses 65
Draws 57
Win Rate 46%

Performance by Color

Color Wins Draws Losses Win Rate
White 59 26 29 52%
Black 47 31 36 41%

Recent Matches

Boer de, R. (Rein) (2000) Tuesday 27 May 2025 WIN +20.2
IM Jong de, M. (Migchiel) (2264) Wednesday 21 May 2025 LOSS -7.0
CM Buendgen, A. (Achim) (2099) Saturday 10 May 2025 LOSS -14.4
FM Etmans, M.D. (Maarten) (2011) Tuesday 6 May 2025 WIN +20.8
Visser, M. (Mathijs) (1943) Tuesday 15 April 2025 WIN +17.6
Lemstra, B. (Bart) (2032) Tuesday 8 April 2025 LOSS -17.4
Plasman, J.A. (Hans) (2141) Saturday 5 April 2025 WIN +28.3
Heide van der, A. (Auke) (1983) Tuesday 1 April 2025 WIN +19.8
Kruit, E.A. (Erik) (1904) Tuesday 25 March 2025 WIN +13.2
Meppelink, G. (Gerrit) (1750) Saturday 22 March 2025 WIN +7.6
Nolles, D.S. (Dirk Sieds) (1898) Saturday 22 March 2025 WIN +14.4
Viersma, M. (Murk) (1985) Saturday 22 March 2025 WIN +19.2
Meindersma, T. (Teun) (1810) Saturday 22 March 2025 WIN +10.1
Veen van der, R. (Ronald) (1924) Saturday 22 March 2025 DRAW -4.2
Kooi van der, A. (Aat) (1892) Saturday 22 March 2025 WIN +14.1
Bosma, P.G. (Pieter) (1597) Saturday 22 March 2025 WIN +3.2
Stavast, D.W. (Dick) (2094) Tuesday 18 March 2025 DRAW +3.5
Pastoor, E.J. (Ernst-Jan) (1998) Saturday 8 March 2025 WIN +18.2
Schriemer, O. (Oene) (1944) Tuesday 4 March 2025 WIN +15.3
Kolijn, D. (David) (1799) Friday 28 February 2025 WIN +9.6