Hartston, William R

ENG ENG·Born 1947·FIDE #400262·867 Games

Classical2430867 Games

Rapid—0 Games

Blitz—0 Games

Statistics

867

Total

282

Wins

410

Draws

175

Losses

33%47%20%

Play Style

What you need to know before facing them

Elite accuracy: 92.3% average

Very consistent (91%)

Very precise: only 0.0 blunders/game

Dominates 1.Nf3 ♔ (67% in 21 games)

Vulnerable to 1.c4 ♚ (only 44%)

Deep Analysis

Stockfish 18 · Classical games · 27 analyzed

Accuracy by phase

Opening96.3%

Middlegame93.5%

Endgame93.3%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)96%

2 Games

Equal position94%

14 Games

Losing (-2 or more)90%

11 Games

Problematic Pieces

Which pieces cause most errors?

♖

24%

14 errors

♞

19%

11 errors

♕

17%

10 errors

♗

16%

9 errors

♙

16%

9 errors

♔

5 errors

Critical Moment

When does the first serious error occur?

Move 23average

1-15

16-25

26-35

36-45

46+

100% of blunders occur between move 16-25. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

abcdefgh

Many

Few

Critical squares

c84 err

f44 err

d43 err

d53 err

h63 err

c8/f4 concentrate most errors. Force decisions in those zones.

Recent Games

Martin, A.

? · 1 Jan 1988

1-0

Sherzer, Alex2350

Lloyds Bank Masters 11th · 30 Aug 1987

½-½

Tozer, Richard J D

Lloyds Bank Masters 11th · 26 Aug 1987

1-0

Cooper, Lawrence H

Lloyds Bank Masters 11th · 25 Aug 1987

½-½

Hansen, Mads Smith2305

Lloyds Bank Masters 11th · 24 Aug 1987

½-½

Plaskett, H James2435

? · 1 Jan 1986

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Nimzo-Indian: Leningrad

60.0%

10 Games·Wins

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5

Grünfeld

60.0%

10 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 d5

Black

No consistent strengths detected as Black

Critical Blunders

Tactical errors analyzed with Stockfish

3 errors

▶

#56Kd5??

Endgame

vs Bronstein

OTB·1976

▶

#45Rd8??

Endgame

vs Korchnoi

OTB

▶

#23e8g7??

Endgame

vs Tal

OTB

Endgame Statistics

10 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

1988

1987

1986

1985

1984

1983

PRO

Starting Position

436 Games

37%48%15%

Move	Games	%
1.e4	271	60%
1.d4	110	66%
1.Nf3	21	67%
1.g3	17	56%
1.c4	9	56%
1.d3	8	69%

1.e4

60%

271

1.d4

66%

110

1.Nf3

67%

1.g3

56%

1.c4

56%

1.d3

69%

Hartston, William R

Play against Hartston, William R's Twin

Statistics

Play Style

Deep Analysis

Clutch Factor

Problematic Pieces

Critical Moment

Error Heatmap

Recent Games

Openings

Weaknesses

Strengths

Nimzo-Indian: Leningrad

Grünfeld

Critical Blunders