KNSB FIDE
OZ

Oscar Zecha

Rated since January 2023

2261 Classic
2045 Rapid
2209 Blitz

RIVALRY

Nemesis
Frederiks, J. (Jesse)
Games: 4 · Win rate: 50%
Kryptonite
Ritzerveld, N. (Noah)
Games: 4 · Win rate: 0%
Easy Target
Blok, X. (Xaveer)
Games: 5 · Win rate: 100%

The good & the bad

Best wins
DE FIRMIAN, NICK (GM) 2410
13483 Amsterdam Chess Festival Blitz 2026 + NK Studenten Blitz Groep A · Friday 10 July 2026
DOVGALIUK, O. (OLEKSANDR) (FM) 2391
12267 Open NK Schaken 2026 Open NK · Monday 27 July 2026
RATSMA, M.B. (MIDAS) (FM) 2342
8427 Chess Festival Groningen Open A · Friday 27 December 2024
HAN, QIXIANG (FM) 2311
13218 Amsterdam Chess Festival 2026 + NK Studenten Klassiek Groep A · Friday 17 July 2026
LABRUYÈRE, R. (ROGER) 2304
9051 TAPIJTGIGANT OPEN ASK 2025 Groep A · Sunday 20 April 2025
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
Amsterdam Chess Festival 2026 + NK Studenten Klassiek Groep A Saturday 11 July 2026 +5–3=1 +13.2
Amsterdam Chess Festival Blitz 2026 + NK Studenten Blitz Groep A Friday 10 July 2026 +9–4=0 +60.3
HSG Open 2026 Groep A Friday 19 June 2026 +2–1=2 -3.3
16e WLC Weekendtoernooi Groep A Friday 8 May 2026 +3–2=1 +11.1
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 +8–4=2 +13.1
85e Daniel Noteboomtoernooi Groep A Friday 20 February 2026 +2–2=0 -18.2
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 +2–1=1 +20.3
Chess Festival Groningen Open B Thursday 21 December 2023 +6–2=1 +49.0
Hoogeveen 2023 Open Groep A Saturday 21 October 2023 +1–4=3 -11.5
Chessable Open NK 2023 Reserve A Monday 24 July 2023 +4–1=4 +69.6
Open NK Schaken 2026 Open NK Tuesday 21 July 2026 +4–4=1 +36.5
NJSK B-jeugd Saturday 25 April 2026 +3–1=3 -2.0
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 +2–3=4 +23.0
NJSK Jeugd C Saturday 27 April 2024 +4–2=3 -36.6
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 +0–1=1 -10.7
Waling Dijkstra Weekendtoernooi Groep A Friday 10 November 2023 +2–2=1 -28.0
KNSB-Jeugdclubcompetitie 2, AC Groep AC Saturday 30 September 2023 +2–0=0 +1.8
KNSB-Jeugdclubcompetitie 1, AC Groep A Saturday 23 September 2023 +1–1=0 +0.4
KNSB competitie 2023-2024 Klasse 2 ronde 9 Saturday 16 September 2023 +0–1=0 -1.1
KNSB competitie 2023-2024 Klasse 2 ronde 8 Saturday 16 September 2023 +0–0=1 +9.5
KNSB competitie 2023-2024 Klasse 2 ronde 7 Saturday 16 September 2023 +0–0=1 -3.2
KNSB competitie 2023-2024 Klasse 2 ronde 6 Saturday 16 September 2023 +0–0=1 +15.2
KNSB competitie 2023-2024 Klasse 2 ronde 5 Saturday 16 September 2023 +0–0=1 +13.1
KNSB competitie 2023-2024 Klasse 2 ronde 4 Saturday 16 September 2023 +0–0=1 +17.2
KNSB competitie 2023-2024 Klasse 2 ronde 2 Saturday 16 September 2023 +1–0=0 +15.2
KNSB competitie 2023-2024 Klasse 2 ronde 1 Saturday 16 September 2023 +0–1=0 -12.5
European Youth Championship - Open 12 Tuesday 5 September 2023 +5–4=0 -138.4
Nederlandse Jeugdkampioenschappen (D-categorie) D Jeugd Thursday 18 May 2023 +7–1=1 +45.8
NJSK C jeugd Friday 21 April 2023 +2–1=6 -11.8
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 +4–4=1 -64.0
KNSB-Jeugdclubcompetitie 4, AC+D finale Meesterklasse A en C Saturday 10 December 2022 +2–0=0 +0.2
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 +1–0=0 +23.8
KNSB competitie 2022-2023 Klasse 4 ronde 7 Saturday 17 September 2022 +1–0=0 +22.9
KNSB competitie 2022-2023 Klasse 4 ronde 4 Saturday 17 September 2022 +1–0=0 +17.8

Team Competition

Current teams
Apeldoorn 1
Meesterklasse · 2025-2026 · 4 games
Apeldoorn 2
Klasse 2C · 2025-2026 · 1 game
Past teams
ASV 1
Klasse 2C · 2024-2025
ASV 2
Klasse 2C · 2023-2024
Caïssa Elburg 1
Klasse 4C · 2022-2023
Caïssa Elburg 1
Klasse 4B · 2021-2022

Rating History

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Peak Ratings

Classic 2261 Aug. 1, 2026
Rapid 2079 March 1, 2025
Blitz 2269 March 1, 2025

Games

Wins 222
Losses 121
Draws 76
Win Rate 53%

Performance by Color

Color Wins Draws Losses Win Rate
White 114 38 61 54%
Black 108 38 60 52%

Recent Matches

FM Nemegeer, A. (Arne) (2292) Wednesday 29 July 2026 LOSS -11.2
GM Sandipan, C. (Chanda) (2468) Tuesday 28 July 2026 LOSS -5.3
FM Dovgaliuk, O. (Oleksandr) (2391) Monday 27 July 2026 WIN +21.3
GM Hausrath, D. (Daniel) (2459) Sunday 26 July 2026 DRAW +8.9
FM Schoorl, R. (Rob) (2281) Saturday 25 July 2026 WIN +17.3
Han, Qixuan (2058) Friday 24 July 2026 WIN +8.6
FM Ritzerveld, N. (Noah) (2395) Thursday 23 July 2026 LOSS -7.5
Hoff van 't, T. (Tom) (2105) Wednesday 22 July 2026 WIN +10.3
IM Winter de, A. (Arthur) (2455) Tuesday 21 July 2026 LOSS -5.7
Hoff van 't, T. (Tom) (2105) Sunday 19 July 2026 WIN +10.3
FM Kazarjan, G. (Gachatur) (2307) Saturday 18 July 2026 LOSS -10.7
FM Han, Qixiang (2311) Friday 17 July 2026 WIN +18.4
IM Delft van, M. (Merijn) (2372) Thursday 16 July 2026 LOSS -8.3
Goudriaan, R. (Rafael) (2290) Wednesday 15 July 2026 WIN +17.6
Engelen van, S.T. (Stijn) (2032) Tuesday 14 July 2026 WIN +7.7
Kleeman, D. (David) (2013) Monday 13 July 2026 WIN +7.1
Lopes, S.E. (Samuel) (2019) Sunday 12 July 2026 DRAW -7.2
Mienis, D. (Dennis) (2019) Saturday 11 July 2026 LOSS -21.7
Ploeg van der, M.L.N. (Mark) (1965) Friday 10 July 2026 WIN +9.1
CM Visser, H.C.J. (Henk-Jan) (2239) Friday 10 July 2026 LOSS -13.2