KNSB FIDE
SH

Sergio Harnandan

Rated since January 2023

1987 Classic

RIVALRY

Nemesis
Hageman, G.M.J. (Ger)
Games: 3 · Win rate: 67%

The good & the bad

Best wins
ELFERINK, L.A. (LEON) 2071
12593 KNSB competitie 2025-2026 Klasse 4 ronde 5 · 2025-12-13
LAGEMAAT VAN DE, A.G. (AREND) (CM) 2052
9799 KNSB competitie 2024-2025 Klasse 4 ronde 3 · 2024-11-09
YATSISHIN, IVAN 2019
2023 IBCA World Individual Chess Championship for the Blind and Visually Impaired · 2023-10-15
NIKOLADZE, G. (GELA) 2013
12775 SOS competitie 2025/2026 Lijst 1 mrt · 2026-02-10
REEDIJK, P.J. (PETER) 2006
12409 KNSB competitie 2025-2026 Klasse 4 Ronde 4 · 2025-11-22
Worst losses
JONG DE, L. (LUCAS) 1610
6047 Ledenweekend NSVG Groep A · 2022-11-26
STERK, R. (RALF) 1657
7605 SOS Competitie 2023/2024 November 2023 · 2023-11-07
MELNIK, STEFAN 1743
IBCA European Chess Championship 2024 for visually impaired players · 2024-06-20
KARELSE, J.M. (HANS) 1752
5712 SOS Competitie 2022/2023 Januari 2023 · 2023-01-17
THUIJLS, J.M.P. (HANS) 1758
46ste Open Internationaal Toernooi Gent · 2025-07-21
ONK NSVG 2025 ONK NSVG 2025 Thu, Nov 27, 2025 +4–1=1 -4.4
2e ONK NSVG 2024 2e ONK NSVG 2024 Thu, Nov 28, 2024 +4–2=0 -4.2
IBCA European Chess Championship 2024 for visually impaired players Sun, Jun 16, 2024 +3–4=2 -38.1
SGS Bekercompetitie 2025-2026 2026-02 Wed, Oct 1, 2025 +0–1=0 -6.9
KNSB competitie 2025-2026 Klasse 4 ronde 6 Sat, Sep 20, 2025 +0–1=0 -13.3
KNSB competitie 2025-2026 Klasse 4 ronde 8 Sat, Sep 20, 2025 +1–0=0 +11.3
KNSB competitie 2025-2026 Klasse 4 ronde 7 Sat, Sep 20, 2025 +1–0=0 +10.6
KNSB competitie 2025-2026 Klasse 4 ronde 5 Sat, Sep 20, 2025 +1–0=0 +16.4
KNSB competitie 2025-2026 Klasse 4 Ronde 4 Sat, Sep 20, 2025 +1–0=0 +15.8
KNSB competitie 2025-2026 Klasse 4 ronde 3 Sat, Sep 20, 2025 +1–0=0 +15.0
KNSB competitie 2025-2026 Klasse 4 ronde 1 Sat, Sep 20, 2025 +0–1=0 -7.3
SOS competitie 2025/2026 Lijst 1 apr Mon, Sep 1, 2025 +0–1=0 -5.4
SOS competitie 2025/2026 Lijst 1 mrt Mon, Sep 1, 2025 +1–0=0 +14.0
SOS competitie 2025/2026 Lijst 1 feb Mon, Sep 1, 2025 +0–1=0 -4.2
SOS competitie 2025/2026 Lijst 1 jan Mon, Sep 1, 2025 +1–0=0 +13.2
SOS competitie 2025/2026 Lijst 1 Dec Mon, Sep 1, 2025 +1–0=0 +14.9
SOS competitie 2025/2026 Lijst 1 Nov Mon, Sep 1, 2025 +1–0=0 +12.1
46ste Open Internationaal Toernooi Gent Sat, Jul 19, 2025 +4–5=0 -36.8
SGS Bekercompetitie 2024-2025 2025-02 Fri, Nov 1, 2024 +0–1=0 -13.2
SGS Bekercompetitie 2024-12 Fri, Nov 1, 2024 +0–1=0 -12.9
KNSB competitie 2024-2025 Klasse 4 ronde 9 en uitgestelde wedstrijd … Sat, Sep 21, 2024 +0–1=0 -13.1
KNSB competitie 2024-2025 Klasse 4 ronde 7 Sat, Sep 21, 2024 +1–0=0 +13.6
KNSB competitie 2024-2025 Klasse 4 ronde 6 Sat, Sep 21, 2024 +0–1=0 -12.2
KNSB competitie 2024-2025 Klasse 4 ronde 5 Sat, Sep 21, 2024 +1–0=0 +12.6
KNSB competitie 2024-2025 Klasse 4 ronde 4 Sat, Sep 21, 2024 +1–0=0 +15.0
KNSB competitie 2024-2025 Klasse 4 ronde 3 Sat, Sep 21, 2024 +1–0=0 +17.5
KNSB competitie 2024-2025 Klasse 4 ronde 2 Sat, Sep 21, 2024 +0–1=0 -7.3
KNSB competitie 2024-2025 Klasse 4 ronde 1 Sat, Sep 21, 2024 +1–0=0 +14.0
SOS Competitie 2024/2025 2025-05 Sun, Sep 1, 2024 +1–0=0 +10.5
SOS Competitie 2024/2025 2025-04 Sun, Sep 1, 2024 +1–0=0 +10.1
SOS Competitie 2024/2025 2025-03 Sun, Sep 1, 2024 +0–1=0 -11.9
SOS Competitie 2024/2025 2025-02 Sun, Sep 1, 2024 +1–0=0 +9.1
SOS Competitie 2024/2025 2024-12 Sun, Sep 1, 2024 +1–0=0 +8.9
SOS Competitie 2024/2025 2024-11 Sun, Sep 1, 2024 +1–0=0 +10.0
SOS Competitie 2024/2025 2024-10 Sun, Sep 1, 2024 +2–0=0 +21.2
IBCA World Individual Chess Championship for the Blind and Visually Impaired Sun, Oct 8, 2023 +3–3=2 +12.3
KNSB competitie 2023-2024 Klasse 4 ronde 9 Sat, Sep 16, 2023 +0–1=0 -12.0
KNSB competitie 2023-2024 Klasse 4 ronde 8 Sat, Sep 16, 2023 +0–0=1 +2.6
KNSB competitie 2023-2024 Klasse 4 ronde 7 Sat, Sep 16, 2023 +1–0=0 +13.4
KNSB competitie 2023-2024 Klasse 4 ronde 6 Sat, Sep 16, 2023 +0–1=0 -12.7
KNSB competitie 2023-2024 Klasse 4 ronde 5 Sat, Sep 16, 2023 +1–0=0 +13.2
KNSB competitie 2023-2024 Klasse 4 ronde 4 Sat, Sep 16, 2023 +1–0=0 +17.6
KNSB competitie 2023-2024 Klasse 4 ronde 3 Sat, Sep 16, 2023 +1–0=0 +18.6
SOS Competitie 2023/2024 April 2024 Fri, Sep 1, 2023 +0–1=0 -11.1
SOS Competitie 2023/2024 Maart 2024 Fri, Sep 1, 2023 +0–0=1 +3.4
SOS Competitie 2023/2024 Januari 2024 Fri, Sep 1, 2023 +1–0=0 +12.9
SOS Competitie 2023/2024 December 2023 Fri, Sep 1, 2023 +0–1=0 -10.2
SOS Competitie 2023/2024 November 2023 Fri, Sep 1, 2023 +0–1=0 -8.9
SOS Competitie 2023/2024 September 2023 Fri, Sep 1, 2023 +1–0=0 +15.4
ONK NSVG 2023 ONK NSVG 2023 Thu, Feb 16, 2023 +4–1=1 +19.7
Ledenweekend NSVG Groep A Sat, Nov 26, 2022 +1–1=1 -22.7
SGS Bekercompetitie dec 2022 Mon, Oct 17, 2022 +0–1=0 -10.9
KNSB competitie 2022-2023 Klasse 4 ronde 9 Sat, Sep 17, 2022 +0–1=0 -13.4
KNSB competitie 2022-2023 Klasse 4 ronde 6 Sat, Sep 17, 2022 +0–0=1 +2.0
SOS Competitie 2022/2023 Mei Mon, Sep 12, 2022 +1–0=0 +9.1
SOS Competitie 2022/2023 April 2023(HK) Mon, Sep 12, 2022 +1–0=0 +15.7
SOS Competitie 2022/2023 Maart 2023(HK) Mon, Sep 12, 2022 +0–1=0 -6.8
SOS Competitie 2022/2023 Januari 2023 Mon, Sep 12, 2022 +0–1=0 -13.8

Rating History

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Peak Ratings

Classic 1994 March 1, 2026
Rapid 1994 March 1, 2026
Blitz 1994 March 1, 2026

Games

Wins 52
Losses 37
Draws 10
Win Rate 53%

Performance by Color

Color Wins Draws Losses Win Rate
White 36 6 23 55%
Black 16 4 14 47%

Recent Matches

Hoolsema, M. (Maarten) (1970) 2026-03-28 LOSS -13.3
Smeenk, M. (Merijn) (2045) 2026-03-20 LOSS -5.4
Hageman, G.M.J. (Ger) (1958) 2026-03-07 WIN +11.3
Nikoladze, G. (Gela) (2013) 2026-02-10 WIN +14.0
Dambrink, J.L. (Louis) (1913) 2026-02-07 WIN +10.6
Heijer den, C.A. (Rolinde) (2136) 2026-01-31 LOSS -6.9
Goes, S.F. (Sten) (2243) 2026-01-13 LOSS -4.2
Elferink, L.A. (Leon) (2071) 2025-12-13 WIN +16.4
Hageman, G.M.J. (Ger) (1974) 2025-12-02 WIN +13.2
Booy, W.A. (Willem) (1669) 2025-11-30 WIN +5.0
Spoelstra, J.L. (Jan) (1619) 2025-11-29 WIN +3.9
Makkinje, J. (Jeroen) (1558) 2025-11-29 WIN +2.7
Smit, E. (Emeline) (1962) 2025-11-28 LOSS -10.7
Lange de, M. (Marieke) (1509) 2025-11-28 WIN +2.0
Vaillant, P.E. (Paul) (1675) 2025-11-27 DRAW -7.3
Reedijk, P.J. (Peter) (2006) 2025-11-22 WIN +15.8
Veldhorst, B. (Berend) (1978) 2025-11-11 WIN +14.9
Vos de, M.A.C. (Michaël) (1982) 2025-11-01 WIN +15.0
Scholten, M. (Marcel) (1886) 2025-10-01 WIN +12.1
Stap, C.R.M. (Kees) (2059) 2025-09-20 LOSS -7.3