GM

Speelman, Jon S

ENG ENG·Born 1956·FIDE #400033·2,849 Games

Classical24952,654 Games
Rapid254078 Games
Blitz2449117 Games

Statistics

2849

Total

985

Wins

1451

Draws

413

Losses

35%51%14%

Play Style

What you need to know before facing them

Elite accuracy: 93.8% average
Solid conversion: 89%
Very consistent (92%)
Very precise: only 0.0 blunders/game
Dominates 1.d4 ♔ (66% in 503 games)
Vulnerable to 1.Nf3 ♚ (only 47%)

Deep Analysis

Stockfish 18 · Classical games · 219 analyzed

Accuracy by phase
Opening96.0%
Middlegame93.8%
Endgame94.7%

Clutch Factor

Performance under pressure

+4%
Winning (+2 or more)95%
48 Games
Equal position95%
109 Games
Losing (-2 or more)91%
62 Games

Problematic Pieces

Which pieces cause most errors?

♙
22%
51 errors
♖
22%
52 errors
♞
19%
45 errors
♕
19%
44 errors
♗
9%
22 errors
♔
9%
20 errors

Critical Moment

When does the first serious error occur?

Move 39average
1-15
16-25
26-35
36-45
46+
36% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8
10
8
8
7
9
8
7
6
9
abcdefgh
Many
Few
Critical squares
c610 err
e59 err
g39 err
a58 err
f58 err
c6/e5 concentrate most errors. Force decisions in those zones.

Recent Games

W
Carroll, Thomas2182

4NCL 2025-26 · 4 May 2026

1-0
W
O`Gorman, Tom2388

4NCL 2025-26 · 3 May 2026

0-1
W
Sowray, Peter J2131

4NCL 2025-26 · 2 May 2026

0-1
L
Erdos, Viktor2549

Round 8: Erdos, Viktor - ... · 22 Mar 2026

1-0
W
Murawski, Jan2125

Round 7: Speelman, Jon S ... · 21 Mar 2026

1-0
W
Pultinevicius, Paulius2545

2nd Bundesliga Sud 25-26 · 1 Mar 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!
White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID
White

No consistent strengths detected as White

Black
Sicilian: Rossolimo
60.0%
10 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.Bb5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors
▶
#31Rge5??
Tactics
vs Bates
OTB·2025
▶
#38Qc2??
Tactics
vs Kuhendiran
Blitz·2025
▶
#51Rb7+??
Endgame
vs Turner
Blitz·2025
▶
#33d7??
Tactics
vs Bijeljic
Blitz·2025
▶
#57Nxc4??
Endgame
vs Damodaran
Blitz·2025
▶
#40Kh2??
Tactics
vs Pein
Blitz·2025
▶
#54Kxf7??
Endgame
vs Shaw
Blitz·2025
▶
#70Ke5??
Endgame
vs Royal
OTB·2025
▶
#31Rb2??
Tactics
vs Kozusek
Blitz·2023
▶
#23h6??
Tactics
vs Gasanov
Blitz·2023
Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO
·
2026
2025
2024
2023
2022
2021
PRO
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Starting Position
1384 Games
40%49%11%
1.Nf3
65%
548
1.d4
66%
503
1.e4
65%
187
1.c4
61%
136
1.g3
38%
8
1.b3
100%
2
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