KNSB FIDE
KS

Konstantin Sidorov

Rated since March 2024

1737 Classic
1756 Rapid
1755 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
ORUC, S. (SERTAC) 1844
12214 Amsterdam Chess Open Groep C2 · Sunday 26 October 2025
HENDAWI, N. (NOUR) 1834
12735 2026 Chess.com Botwinnik Open Groep B · Saturday 3 January 2026
GORBUNOV, I. (IVAN) 1809
12214 Amsterdam Chess Open Groep C2 · Sunday 26 October 2025
OTTENKAMP, H.B.T. (BART) 1754
12757 16e Karel Kuip Vierkampen 2026 Groep A · Saturday 18 April 2026
BROERSEN, J.M.A. (JOS) 1705
10470 Tata Steel Chess Tournament 2026 Tienkampen · Friday 30 January 2026
Worst losses
WANDY, K. (KASIM) 1636
10470 Tata Steel Chess Tournament 2026 Tienkampen · Sunday 1 February 2026
VISSCHEDIJK, P. (PAUL) 1663
12411 KNSB competitie 2025-2026 Klasse 6 Ronde 3 · Saturday 22 November 2025
LOONEN, T. (TEUN) 1712
10470 Tata Steel Chess Tournament 2026 Tienkampen · Saturday 24 January 2026
KLEEF VAN, T.S. (THOMAS) 1734
Ghent FIDE Weekender Major 2026 · Saturday 30 May 2026
LITH, T. (TONY) 1744
12214 Amsterdam Chess Open Groep C2 · Saturday 25 October 2025
Ghent FIDE Weekender Major 2026 Friday 29 May 2026 +1–2=1 -19.4
85e Daniel Noteboomtoernooi Groep C Friday 20 February 2026 +2–1=1 +12.7
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +5–2=2 +30.7
2026 Chess.com Botwinnik Open Groep B Friday 2 January 2026 +1–3=0 -15.4
Amsterdam Chess Open Groep C2 Friday 24 October 2025 +2–1=3 +58.5
16e Karel Kuip Vierkampen 2026 Groep A Friday 17 April 2026 +1–1=1 +1.2
KNSB competitie 2025-2026 Klasse 6 ronde 7 Saturday 20 September 2025 +1–0=0
KNSB competitie 2025-2026 Klasse 6 ronde 6 Saturday 20 September 2025 +0–0=1 -2.1
KNSB competitie 2025-2026 Klasse 6 ronde 4 Saturday 20 September 2025 +0–1=0 -19.7
KNSB competitie 2025-2026 Klasse 6 Ronde 3 Saturday 20 September 2025 +0–1=0 -27.1
KNSB competitie 2025-2026 Klasse 6 ronde 2 Saturday 20 September 2025 +1–0=0
KNSB competitie 2025-2026 Klasse 6 ronde 1 Saturday 20 September 2025 +1–0=0 +15.3
HSB competitie 2025-2026 DecemberJanuari Comp 2526 Monday 1 September 2025 +0–1=0 -17.6
HSB competitie 2024-2025 Finale beker 1e klasse Sunday 1 September 2024 +0–1=0 -13.8

Team Competition

Current teams
DSC 5
1e klasse A · 2025-2026 · 1 game
DSC Delft 5
Klasse 6L · 2025-2026 · 5 games
DSC Delft 6
Klasse 6H · 2025-2026 · 1 game
Past teams
DSC 6
2e klasse A · 2024-2025
DSC 7
2e klasse B · 2024-2025
DSC 8
2e klasse A · 2024-2025
DSC 7
klasse 2B · 2023-2024
DSC 8
klasse 2A · 2023-2024

Rating History

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Peak Ratings

Classic 1794 Nov. 1, 2025
Rapid 1756 May 1, 2026
Blitz 1755 March 1, 2026

Games

Wins 15
Losses 14
Draws 9
Win Rate 39%

Performance by Color

Color Wins Draws Losses Win Rate
White 6 5 8 32%
Black 9 4 6 47%

Recent Matches

Nolf, Francky (1648) Sunday 31 May 2026 DRAW -4.4
Kleef van, T.S. (Thomas) (1734) Saturday 30 May 2026 LOSS -15.9
De Meyere, Dirk (1672) Saturday 30 May 2026 WIN +11.5
Demirciler, Erhan (1862) Friday 29 May 2026 LOSS -10.6
Ottenkamp, H.B.T. (Bart) (1754) Saturday 18 April 2026 WIN +15.4
Beverdam, F. (Frank) (1780) Saturday 18 April 2026 DRAW +1.1
Dobber, G. (Bert) (1758) Friday 17 April 2026 LOSS -15.3
Sung, Y.L. (Yong Lin) Saturday 7 March 2026 WIN
Becker, K.U. (Klaus) Saturday 21 February 2026 LOSS
Coenjaerts, R.M.E. (René) (1747) Saturday 21 February 2026 DRAW +1.7
Leeuwen van, N.R. (Nick) (1504) Friday 20 February 2026 WIN +8.3
Chaudhuri, A. (Aarini) (1302) Friday 20 February 2026 WIN +2.7
Blok, M. (Mick) (1628) Saturday 7 February 2026 DRAW -2.1
Wandy, K. (Kasim) (1636) Sunday 1 February 2026 LOSS -25.3
Schrijvers, C.G.M. (Kees) (1685) Saturday 31 January 2026 WIN +16.1
Broersen, J.M.A. (Jos) (1705) Friday 30 January 2026 WIN +17.1
Veenstra, A. (Artyom) (1654) Wednesday 28 January 2026 WIN +14.5
Markus, G.A. (Gijs) (1695) Tuesday 27 January 2026 DRAW -2.8
Metz, B. (Bercis) (1746) Monday 26 January 2026 DRAW -0.1
Leeuwen van, D. (Dick) (1674) Sunday 25 January 2026 WIN +15.5