What is Simon K Williams's FIDE rating?

Simon K Williams's FIDE rating is 2449 standard, 2467 rapid, 2389 blitz. Chess Stalker tracks it together with Simon K Williams's over-the-board games and opening repertoire.

How many OTB games has Simon K Williams played?

The Chess Stalker database holds 3,015 over-the-board games by Simon K Williams (1,185 classical, 62 rapid, 1,768 blitz), with 49% wins. The full list, with openings and results, is on Simon K Williams's Chess Stalker profile.

How do I prepare against Simon K Williams?

Open Simon K Williams's free Chess Stalker report: opening repertoire with results per line as White and Black, recurring weaknesses and blunder patterns evaluated with Stockfish, and recent games. Then rehearse against the Twin Bot, which imitates Simon K Williams's style, before facing them.

Simon K Williams

TitleGrandmasterFederationUnited KingdomBorn1979FIDE ID404454

Classical2449

Rapid2467

Blitz2389

Games3,015

W · D · LWon · Drawn · Lost49 / 16 / 36

Peak2550Nov 2009

Rating history

2360

2400

2440

2480

Oct

2024

Apr

Jul

Oct

2025

Apr

Jul

Oct

2026

Apr

Jul

Oct

Oct 2023Nov 2026

Classical2449Rapid2467Blitz2389no games played

Accuracy by phase

94.9%Opening91.6%Middlegame93.3%Endgame

Clutch factor

Insufficient data

Play style

Elite accuracy: 91.3% average

Low resilience (31%): Doesn't save lost positions

Very consistent (87%)

Very precise: only 0.2 blunders/game

Dominates 1.c4 as

(64% in 201 games)

Vulnerable to 1.b3

(only 44%)

Recent games

Sargsyan, Shant(2648)

Titled Tuesday · 13 Oct 2026

1–0

Klepek, Witold(2304)

Titled Tuesday · 13 Oct 2026

1–0

Yanev, Tihomir(2354)

Titled Tuesday · 13 Oct 2026

½–½

Rian, Kapriaga(2063)

Titled Tuesday · 13 Oct 2026

1–0

Zhigalko, Sergei(2572)

Titled Tuesday · 13 Oct 2026

0–1

Play against Williams's Twin

Their real openings, level & style

Practice against a bot that uses their real openings and playing style

Based on

3,015 games

Based on 3,015 games

Openings

1,487 games as White · scores 58.1%

Weaknesses

where they slip as ♔ White

Caro-Kann1.e4 c6 2.♝c4 d517 games, last played 4 months ago58.8%losses

Sicilian: d6 Systems1.e4 c5 2.♞f3 d618 games, last played 3 weeks ago50.0%losses

Strengths

what holds up for them as ♔ White

English: Anglo-Indian1.c4 ♞f6 2.♞c3 g617 games, last played 2 years ago64.7%wins

Queen's Indian1.d4 ♞f6 2.c4 e6 3.♞f3 b629 games, last played 3 months ago62.1%wins

By family

open a family to see its lines

PROTime controls · Years · Events

3,015 games in scope

LineECOGamesLast playedWins · draws · lossesScorevs 58.1%

A45–E113262w

48%1438%

54.4%−3.6 pts

A10–A302014w

55%1827%

63.9%+5.9 pts

A00–A041643m

45%1837%

53.7%−4.4 pts

D30–D371402w

45%1936%

54.6%−3.4 pts

A40–D041303w

55%1530%

61.9%+3.9 pts

B20–B501202w

52%1434%

58.8%—

D10–D11908w

48%20%32%

57.8%—

E60–E70703m

53%1037%

57.9%—

Mistakes

Problematic pieces

Insufficient data

Critical moment

Insufficient data

Error heatmap · Critical squaresError heatmap

Insufficient data

Critical blunders

Tactical errors analyzed with Stockfish

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Endgame statistics

114 endgames (50.4%) · force Double Rook (0%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

50.4%

114 / 226

B vs N Pref

52.4%·47.8%

prefers the bishop

PiecesTypeWin %games

Rook + Equal Minors

56%44%

77.9%353g

R+Bishop vs R+Knight

59%41%

79.4%306g

Rook vs Minor (Exchange)

49%50%

73.7%281g

Rook vs Rook

48%50%

72.6%252g

Rook vs Two Minors

56%44%

78.1%160g

Pure Pawn

36%50%14

60.6%109g

Rook + Equal Minors77.9%353g

R+Bishop vs R+Knight79.4%306g

Rook vs Minor (Exchange)73.7%281g

Rook vs Rook72.6%252g

Rook vs Two Minors78.1%160g

Pure Pawn60.6%109g

Weak in Double Rook: only 0% win rate (11 games). Force this endgameShow all 14 types

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Repertoire

PROTime controls · Years · Events

3,015 games in scope

Explore the repertoireevery move played, ranked by frequency

1,487 games50%W16%D34%L

1,487games in this linewon 50%, drew 16%, lost 34%

Move

1. d4

8782w

50%1535%

57%

1. e4

2442w

52%1335%

59%

1. c4

2014w

55%18%27%

64%

1. f4

896m

44%1343%

51%

1. ♞f3

333m

33%42%25%

55%

1. b3

181y

50%1733%

58%

1. g4

52y

60%40%

60%

1. a4

57m

60%40%

60%

1. ♞a3

52y

60%40%

60%

1. b4

22y

100%

1. ♞c3

22y

50%50%

25%

1. a3

114y

100%

1. ♞h3

111y

100%

1. f3

1Aug 1999

100%

1. h4

11y

100%

1. g3

111y

100%

Scouting report: Simon K Williams (GM, ENG)

Simon K Williams

Rating history

Play style

Recent games

Play against Williams's Twin

Openings

Weaknesses

Strengths

By family

Mistakes

Critical blunders

Endgame statistics

Repertoire