Player profile

Williams, Simon K

Standard: 2442 Rapid: 2467 Blitz: 2389 (last updated 2026-11-02)
FIDE ID: 404454 (view FIDE profile)
Federation: ENG Sex: M Birth Year: 1979 Age: 47
Title: GM Women's title: — Other title: — FOA title: —
Games: 149 Wins: 66 (44%) Draws: 48 (32%) Losses: 35 (23%)
Dossier

144 of 149 games analyzed.

Accuracy: 92.1%
Opened d4: 33/48Opened Nf3: 6/48Opened c4: 4/48Opened e4: 3/48Opened a4: 1/48Opened f4: 1/48
Castled kingside: 83Same-side castling: 74Did not castle: 11Opposite-side castling: 10Castled queenside: 8
Played on the kingside: 53Played in the center: 32Fianchettoed kingside: 21Fianchettoed queenside: 18Played on the queenside: 14
Active pieces: 85Space advantage: 66Initiated exchanges: 64Isolated pawn: 61Kept the bishop pair: 58Sacrificed material: 58Backward pawn: 57Missed tactics: 23Avoided exchanges: 20Accepted short draws: 7
Openings

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As White 48 games 23W 15D 10L
Queen's Gambit Declined 10 games 4W 3D 3L
Ragozin Defense 3 games 0W 2D 1L
(unspecified) 2 games 0W 1D 1L
Vienna Variation 1 game 0W 1D 0L
Semi-Tarrasch Defense 2 games 1W 0D 1L
Exchange Variation 1 game 1W 0D 0L
Main Line 1 game 0W 0D 1L
Three Knights Variation 2 games 1W 0D 1L
(unspecified) 2 games 1W 0D 1L
Harrwitz Attack 2 games 1W 1D 0L
Orthodox Defense 1 game 1W 0D 0L
Fianchetto Defense 1 game 0W 1D 0L
Traditional Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
English Opening 5 games 2W 3D 0L
Anglo-Indian Defense 3 games 2W 1D 0L
(unspecified) 1 game 0W 1D 0L
Flohr-Mikenas-Carls Variation, Nei Gambit 1 game 1W 0D 0L
Queen's Knight Variation 1 game 1W 0D 0L
Agincourt Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Great Snake Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Trompowsky Attack 4 games 4W 0D 0L
(unspecified) 3 games 3W 0D 0L
(unspecified) 3 games 3W 0D 0L
Raptor Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Indian Defense 3 games 1W 2D 0L
Anti-Grünfeld 1 game 0W 1D 0L
Basman-Williams Attack 1 game 0W 1D 0L
Pseudo-Benko 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Accelerated London System 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Queen's Gambit Accepted 3 games 0W 0D 3L
(unspecified) 2 games 0W 0D 2L
(unspecified) 2 games 0W 0D 2L
Classical Defense 1 game 0W 0D 1L
Russian Gambit 1 game 0W 0D 1L
Sicilian Defense 2 games 1W 1D 0L
French Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Najdorf Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Zukertort Opening 2 games 1W 0D 1L
(unspecified) 2 games 1W 0D 1L
(unspecified) 2 games 1W 0D 1L
Torre Attack 2 games 0W 2D 0L
Classical Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Fianchetto Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Semi-Slav Defense 2 games 1W 1D 0L
Botvinnik Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Queen's Pawn Game 2 games 2W 0D 0L
Torre Attack 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Colle System 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Slav Defense 2 games 1W 0D 1L
Geller Gambit 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Exchange Variation 1 game 0W 0D 1L
Boor Attack 1 game 0W 0D 1L
Queen's Indian Defense 1 game 0W 0D 1L
Classical Variation 1 game 0W 0D 1L
Polugaevsky Gambit 1 game 0W 0D 1L
King's Indian Attack 1 game 1W 0D 0L
French Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Yusupov-Rubinstein System 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
King's Indian Defense 1 game 0W 1D 0L
Smyslov Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Ware Opening 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Grünfeld Defense 1 game 1W 0D 0L
Exchange Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Dutch Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
King's Gambit Accepted 1 game 0W 1D 0L
Bishop's Gambit 1 game 0W 1D 0L
Cozio Variation 1 game 0W 1D 0L
Pirc Defense 1 game 1W 0D 0L
Classical Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Bird Opening 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Réti Opening 1 game 0W 0D 1L
Anglo-Slav Variation 1 game 0W 0D 1L
Gurevich System 1 game 0W 0D 1L
As Black 59 games 25W 17D 17L
Dutch Defense 16 games 9W 3D 4L
Classical Variation 12 games 8W 3D 1L
(unspecified) 12 games 8W 3D 1L
Rubinstein Variation 2 games 0W 0D 2L
(unspecified) 2 games 0W 0D 2L
Raphael Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Stonewall Variation 1 game 0W 0D 1L
Modern Variation 1 game 0W 0D 1L
French Defense 14 games 4W 8D 2L
Tarrasch Variation 5 games 2W 2D 1L
Closed Variation, Main Line 3 games 1W 2D 0L
(unspecified) 1 game 1W 0D 0L
Closed Variation 1 game 0W 0D 1L
Schlechter Variation 2 games 0W 2D 0L
(unspecified) 2 games 0W 2D 0L
Steinitz Variation 2 games 0W 2D 0L
Boleslavsky Variation 2 games 0W 2D 0L
Exchange Variation 2 games 0W 2D 0L
(unspecified) 2 games 0W 2D 0L
Advance Variation 2 games 2W 0D 0L
Euwe Variation 2 games 2W 0D 0L
Chigorin Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Sicilian Defense 5 games 2W 1D 2L
Nyezhmetdinov-Rossolimo Attack 1 game 0W 0D 1L
Gurgenidze Variation 1 game 0W 0D 1L
Wing Gambit 1 game 1W 0D 0L
Marshall Variation 1 game 1W 0D 0L
Moscow Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
French Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Sozin Attack 1 game 1W 0D 0L
Leonhardt Variation 1 game 1W 0D 0L
Zukertort Opening 4 games 0W 1D 3L
Dutch Variation 2 games 0W 0D 2L
(unspecified) 2 games 0W 0D 2L
Pirc Invitation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Horwitz Defense 4 games 3W 0D 1L
(unspecified) 4 games 3W 0D 1L
(unspecified) 4 games 3W 0D 1L
English Opening 2 games 2W 0D 0L
King's English Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Agincourt Defense 1 game 1W 0D 0L
Neo-Catalan Declined 1 game 1W 0D 0L
Indian Defense 2 games 1W 1D 0L
Wade-Tartakower Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Przepiorka Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Modern Defense 2 games 1W 0D 1L
Two Knights Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Geller's System 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
King's Indian Defense 1 game 0W 0D 1L
Petrosian Variation 1 game 0W 0D 1L
Stein Defense 1 game 0W 0D 1L
Four Knights Game 1 game 0W 0D 1L
Spanish Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Italian Game 1 game 1W 0D 0L
Paris Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Catalan Opening 1 game 1W 0D 0L
Closed 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Queen's Pawn Game 1 game 0W 1D 0L
Accelerated London System 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Caro-Kann Defense 1 game 0W 0D 1L
Exchange Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Philidor Defense 1 game 0W 1D 0L
Lion Variation 1 game 0W 1D 0L
Lion's Claw, with Be2 and c6 1 game 0W 1D 0L
Queen's Gambit Declined 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Semi-Slav Defense 1 game 1W 0D 0L
Main Line 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
English Defense 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Blunders Top 4 of 467

This player's costliest moves in analyzed games. Can you find the winning move?

2023.02.03 · 55... Bg5 (−88.9% win chance) 0-1
Williams, Simon K
Malakhov, Vladimir
View game
2026.08.05 · 29... a6 (−73.1% win chance) 1/2-1/2
Williams, Simon K
Ledger, Andrew J
View game
2025.04.12 · 39... Re8 (−56.3% win chance) 1/2-1/2
Williams, Simon K
Golis, Wiktor
View game
2026.03.05 · 32... Kf6 (−53% win chance) 0-1
Williams, Simon K
Danielsen, Henrik
View game
Games Showing all 149 games
Date Event Round Color Opponent Result Accuracy % First moves