KNSB FIDE
OZ

Oscar Zecha

Rated since January 2023

2205 Classic

RIVALRY

Nemesis
Gortemaker, L. (Lucas)
Games: 4 · Win rate: 50%
Kryptonite
Goudriaan, R. (Rafael)
Games: 7 · Win rate: 0%
Easy Target
Blok, X. (Xaveer)
Games: 5 · Win rate: 100%

The good & the bad

Best wins
RATSMA, M.B. (MIDAS) (FM) 2342
8427 Chess Festival Groningen Open A · Friday 27 December 2024
LABRUYÈRE, R. (ROGER) 2304
9051 TAPIJTGIGANT OPEN ASK 2025 Groep A · Sunday 20 April 2025
WEMPE, J. (JOOST) (FM) 2250
8427 Chess Festival Groningen Open A · Monday 30 December 2024
GROOTEN, T. (TOMMY) 2244
Apeldoorns Snelschaakkampioenschap · Sunday 9 February 2025
MOLLEMA, T. (THOMAS) (CM) 2243
13524 KNSB competitie 2025-2026 Meesterklasse ronde 9 · Saturday 11 April 2026
Worst losses
FREDERIKS, J. (JESSE) 1462
6684 PJK OSBO C · Sunday 12 February 2023
TONUK, DENIZ 1470
European Youth Championship - Open 12 · Friday 8 September 2023
DAMEN, J. (JOSEPHINE) 1667
6768 Kwalificatie 4 NK ABC Groep B Jeugd · Saturday 18 March 2023
MNATSAKANYAN, AREN 1668
European Youth Championship - Open 12 · Tuesday 12 September 2023
JERONOVICS, TOMS 1677
European Youth Championship - Open 12 · Thursday 7 September 2023
TAPIJTGIGANT OPEN ASK 2026 Groep A Saturday 4 April 2026 +3–2=1 +13.5
NK Snelschaak voor clubteams Groep A Sunday 29 March 2026 +8–6=2 +0.9
85e Daniel Noteboomtoernooi Groep A Friday 20 February 2026 +4–4=0 -36.4
2026 Chess.com Botwinnik Open Groep A Friday 2 January 2026 +4–2=0 +99.6
Chessfestival Groningen Open B Sunday 21 December 2025 +8–1=0 +106.3
KNSB competitie 2025-2026 Meesterklasse ronde 9 Saturday 20 September 2025 +1–0=0 +19.6
KNSB competitie 2025-2026 Meesterklasse ronde 6 Saturday 20 September 2025 +0–1=0 -19.6
KNSB competitie 2025-2026 Meesterklasse ronde 8 Saturday 20 September 2025 +0–1=0 -10.4
KNSB competitie 2025-2026 Meesterklasse ronde 1 Saturday 20 September 2025 +0–1=0 -9.7
NK Snelschaken 2025 Groep A Saturday 13 September 2025 +14–8=3 -120.6
UniClass Science Park Amsterdam Schaaktoernooi Groep A Saturday 5 July 2025 +4–3=2 -30.0
HSG Open 2025 Groep A Friday 20 June 2025 +2–2=0 -8.9
15e WLC Weekendtoernooi Groep A Friday 16 May 2025 +3–3=0 -39.8
Open NK Rapid 2025 Open NK Rapid Saturday 3 May 2025 +5–4=0 -34.3
TAPIJTGIGANT OPEN ASK 2025 Groep A Saturday 19 April 2025 +2–2=2 +23.3
Chess Festival Groningen Open A Saturday 21 December 2024 +2–4=3 -5.1
Hoogeveen Schaaktoernooi Open Groep Saturday 26 October 2024 +2–4=3 +11.4
NK-Snelschaken 2024 Saturday 14 September 2024 +14–8=4 +129.9
Nazomervierkampentoernooi 2024 Schaakclub Assen Groep A Friday 30 August 2024 +2–0=1 +39.6
HSG Open 2024 Groep A Friday 21 June 2024 +4–2=2 +50.3
Chess Festival Groningen Open B Thursday 21 December 2023 +12–4=2 +117.3
Hoogeveen 2023 Open Groep A Saturday 21 October 2023 +2–8=6 -9.9
Chessable Open NK 2023 Reserve A Monday 24 July 2023 +8–2=8 +167.8
Waling Dijkstra Weekendtoernooi 2025 - Friday 14 November 2025 +4–2=0 -1.0
World Youth Chess Championship 2025 - U14 Friday 3 October 2025 +4–7=0 -143.0
KNSB competitie 2025-2026 Klasse 2 Ronde 4 Saturday 20 September 2025 +1–0=0 +15.3
Open NK Schaken 2025 Open NK Tuesday 22 July 2025 +3–4=2 -29.3
NJSK C Jeugd Saturday 26 April 2025 +7–1=1 +79.6
Apeldoorns Snelschaakkampioenschap Sunday 9 February 2025 +10–2=1 +106.8
OSBO PJK PJK categorie C Saturday 18 January 2025 +3–0=0 +9.7
Kwalificatie 1 NK ABC Groep C Saturday 30 November 2024 +4–1=2 -19.0
Waling Dijkstra Weekendtoernooi Groep A Friday 15 November 2024 +4–1=1 +29.9
KNSB competitie 2024-2025 Klasse 2 ronde 9 Saturday 21 September 2024 +0–0=1 +11.1
KNSB competitie 2024-2025 Klasse 2 ronde 8 Saturday 21 September 2024 +1–0=0 +15.3
KNSB competitie 2024-2025 Klasse 2 ronde 7 Saturday 21 September 2024 +0–1=0 -12.6
KNSB competitie 2024-2025 Klasse 2 ronde 6 Saturday 21 September 2024 +1–0=0 +19.3
KNSB competitie 2024-2025 Klasse 2 ronde 5 Saturday 21 September 2024 +0–1=0 -20.7
KNSB competitie 2024-2025 Klasse 2 ronde 4 Saturday 21 September 2024 +0–0=1 +7.0
KNSB competitie 2024-2025 Klasse 2 ronde 3 Saturday 21 September 2024 +0–1=0 -16.5
KNSB competitie 2024-2025 Klasse 2 ronde 2 Saturday 21 September 2024 +1–0=0 +18.9
KNSB competitie 2024-2025 Klasse 2 ronde 1 Saturday 21 September 2024 +0–0=1 +2.3
Brugse Meesters 2024 Open Saturday 10 August 2024 +3–2=4 +23.6
Open NK Schaken 2024 Open NK Schaken 2024 Monday 22 July 2024 +4–6=8 +64.6
NJSK Jeugd C Saturday 27 April 2024 +8–4=6 -37.9
OSBO PJK Groep A Saturday 24 February 2024 +9–0=0 +25.3
Kwalificatie NK ABC 3 Jeugd B Saturday 10 February 2024 +7–0=0 +86.7
KNSB-Jeugdclubcompetitie 4, AC Finale A en C Saturday 9 December 2023 +0–2=2 -15.9
Waling Dijkstra Weekendtoernooi Groep A Friday 10 November 2023 +4–4=2 -59.3
KNSB-Jeugdclubcompetitie 2, AC Groep AC Saturday 30 September 2023 +4–0=0 +4.6
KNSB-Jeugdclubcompetitie 1, AC Groep A Saturday 23 September 2023 +2–2=0 +1.6
KNSB competitie 2023-2024 Klasse 2 ronde 9 Saturday 16 September 2023 +0–2=0 -1.7
KNSB competitie 2023-2024 Klasse 2 ronde 8 Saturday 16 September 2023 +0–0=2 +21.6
KNSB competitie 2023-2024 Klasse 2 ronde 7 Saturday 16 September 2023 +0–0=2 -3.1
KNSB competitie 2023-2024 Klasse 2 ronde 6 Saturday 16 September 2023 +0–0=2 +30.2
KNSB competitie 2023-2024 Klasse 2 ronde 5 Saturday 16 September 2023 +0–0=2 +26.9
KNSB competitie 2023-2024 Klasse 2 ronde 4 Saturday 16 September 2023 +0–0=2 +34.6
KNSB competitie 2023-2024 Klasse 2 ronde 2 Saturday 16 September 2023 +2–0=0 +32.3
KNSB competitie 2023-2024 Klasse 2 ronde 1 Saturday 16 September 2023 +0–2=0 -27.6
European Youth Championship - Open 12 Tuesday 5 September 2023 +10–8=0 -271.8
Nederlandse Jeugdkampioenschappen (D-categorie) D Jeugd Thursday 18 May 2023 +7–1=1 +45.8
NJSK C jeugd Friday 21 April 2023 +4–2=12 -2.3
Kwalificatie 4 NK ABC Groep B Jeugd Saturday 18 March 2023 +3–1=2 -19.0
PJK OSBO C Saturday 11 February 2023 +5–1=0 -30.1
Chess Festival Groningen Open B Wednesday 21 December 2022 +8–8=2 -95.2
KNSB-Jeugdclubcompetitie 4, AC+D finale Meesterklasse A en C Saturday 10 December 2022 +4–0=0 +2.3
KNSB-Jeugdclubcompetitie 2, AC+D halve finales Meesterklasse A en C Saturday 1 October 2022 +2–0=0 +1.6
KNSB competitie 2022-2023 Klasse 4 ronde 8 Saturday 17 September 2022 +2–0=0 +39.6
KNSB competitie 2022-2023 Klasse 4 ronde 7 Saturday 17 September 2022 +2–0=0 +38.2
KNSB competitie 2022-2023 Klasse 4 ronde 4 Saturday 17 September 2022 +2–0=0 +31.0

Rating History

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Peak Ratings

Classic 2221 June 1, 2025
Rapid 2079 March 1, 2025
Blitz 2269 March 1, 2025

Games

Wins 239
Losses 138
Draws 98
Win Rate 50%

Performance by Color

Color Wins Draws Losses Win Rate
White 119 51 70 50%
Black 120 47 68 51%

Recent Matches

CM Mollema, T. (Thomas) (2243) Saturday 11 April 2026 WIN +19.6
Hummel, P. (Paul) (2178) Monday 6 April 2026 LOSS -16.1
CM Leenen, B. (Boyd) (2186) Monday 6 April 2026 DRAW +0.6
Cornelisse, J.J.A. (John) (2213) Sunday 5 April 2026 WIN +18.3
Buijsman, D. (Delano) (2025) Sunday 5 April 2026 WIN +10.0
Lahaye, R.R. (Rick) (2400) Saturday 4 April 2026 LOSS -7.0
Meiden van der, D. (Dirk) (1966) Saturday 4 April 2026 WIN +7.7
Langeveld, J. (Jonathan) (1958) Sunday 29 March 2026 WIN +8.9
Ruiter de, T.O.M. (Thomas) (2103) Sunday 29 March 2026 WIN +15.4
Mendelsohn, S.I.D. (Saffran) (1994) Sunday 29 March 2026 WIN +10.4
Langeveld, J. (Jonathan) (1958) Sunday 29 March 2026 DRAW -8.7
Ruiter de, T.O.M. (Thomas) (2103) Sunday 29 March 2026 DRAW -2.2
Mendelsohn, S.I.D. (Saffran) (1994) Sunday 29 March 2026 WIN +10.4
IM Oosterom van, C.D. (Chiel) (2417) Sunday 29 March 2026 LOSS -6.1
IM Oosterom van, C.D. (Chiel) (2417) Sunday 29 March 2026 LOSS -6.1
IM Oosterom van, C.D. (Chiel) (2417) Sunday 29 March 2026 LOSS -6.1
Hendriks, V.R.A. (Victor) (2208) Sunday 29 March 2026 LOSS -14.7
Smeenk, M. (Merijn) (1750) Sunday 29 March 2026 WIN +2.9
Hendriks, V.R.A. (Victor) (2208) Sunday 29 March 2026 LOSS -14.7
Roebers, B.M. (Bregje) (1916) Sunday 29 March 2026 WIN +7.3