GM

Nunn, John D M

ENG ENG·Born 1955·FIDE #400017·2,440 Games

Classical25122,371 Games
Rapid253655 Games
Blitz249014 Games

Statistics

2440

Total

1032

Wins

1025

Draws

383

Losses

42%42%16%

Play Style

What you need to know before facing them

Elite accuracy: 93.7% average
High resilience (62%): Dangerous even when losing
Solid conversion: 92%
Very consistent (89%)
Very precise: only 0.0 blunders/game
Dominates 1.e4 ♔ (69% in 1219 games)

Deep Analysis

Stockfish 18 · Classical games · 252 analyzed

Accuracy by phase
Opening96.8%
Middlegame93.9%
Endgame95.2%

Clutch Factor

Performance under pressure

+6%
Winning (+2 or more)95%
86 Games
Equal position95%
117 Games
Losing (-2 or more)89%
49 Games

Problematic Pieces

Which pieces cause most errors?

♕
21%
45 errors
♙
19%
40 errors
♖
18%
38 errors
♗
17%
35 errors
♞
16%
33 errors
♔
10%
21 errors

Critical Moment

When does the first serious error occur?

Move 35average
1-15
16-25
26-35
36-45
46+
33% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8
8
9
6
9
9
8
7
6
6
abcdefgh
Many
Few
Critical squares
c59 err
d49 err
e49 err
e78 err
f48 err
c5/d4 concentrate most errors. Force decisions in those zones.

Recent Games

D
Olafsson, Helgi2439

World Senior Teams +65 · 28 Apr 2026

½-½
W
Westerinen, Heikki M.J.2205

World Senior Teams +65 · 26 Apr 2026

0-1
D
Jussupow, Artur2554

World Senior Teams +65 · 25 Apr 2026

½-½
D
Gruenfeld, Yehuda2367

World Senior Teams +65 · 23 Apr 2026

½-½
D
Maier, Christian2224

World Senior Teams +65 · 22 Apr 2026

½-½
D
Ftacnik, Lubomir2417

World Senior Teams +65 · 21 Apr 2026

½-½

Openings

Based on player games

Weaknesses

EXPLOIT!
White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID
White
Sicilian: Sveshnikov
72.7%
11 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5

French: Tarrasch
59.6%
47 Games·Wins

1.e4 e6 2.d4 d5 3.Nd2

Black
Sicilian: d6 Systems
48.6%
109 Games·Wins

1.e4 c5 2.Nf3 d6

King's Indian: Main Line
45.7%
70 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors
▶
#25d4??
Tactics
vs Quinn
OTB·2025
▶
#62Ng1??
Endgame
vs Giffard
OTB·2024
▶
#24Rhe1??
Tactics
vs Ftacnik
OTB·2023
▶
#20Rac8??
Tactics
vs Lederman
OTB·2022
▶
#22d4c3??
Endgame
vs Karpov
Rapid·1995
▶
#23c7b5??
Endgame
vs Karpov
Rapid
▶
#14a1b1??
Endgame
vs Karpov
OTB
▶
#35Rxf2??
Tactics
vs Korchnoi
OTB
▶
#41b7??
Endgame
vs Korchnoi
OTB
▶
#33Ra6??
Tactics
vs Larsen
OTB
Endgame Statistics

19 endgame categories analyzed — discover where they collapse under pressure

Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO
·
2026
2025
2024
2023
2022
2018
PRO
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Starting Position
1232 Games
50%39%11%
1.e4
69%
1219
1.g3
57%
7
1.d4
75%
6
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