Nunn, John D M

ENG ENG·Born 1955·FIDE #400017

2512Classical

2536Rapid

2490Blitz

Statistics

Total2,440

Wins1,032

Draws1,025

Losses383

42%42%16%

Play Style

before facing themWhat 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 as

(69% in 1219 games)

Play against Nunn's Twin

Uses their openings, level & style

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

Ready to play

2,440 games analyzed

Deep Analysis

Stockfish 18 · Classical · 253 analyzedStockfish 18 · Classical games · 253 analyzed

Accuracy by phase

Opening

96.9%

Middlegame

93.9%

Endgame

95.2%

Clutch Factor

+6%

Winning (+2)Winning (+2)

95%86g

EqualEqual position

95%118g

Losing (−2)Losing (−2)

89%49g

Accuracy under pressure

Problematic Pieces — which cause most errors?

21%

45 err

19%

40 err

18%

38 err

17%

35 err

16%

33 err

10%

21 err

Critical Moment

Move 35 avg

17%

1-15

17%

16-25

33%

26-35

17%

36-45

17%

46+

33% of blunders occur after move 26-35 — keep tension until then.of blunders occur after move 26-35 — keep tension until then.

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

Hotspot zone

c5 / d4

Critical squares

9 err

8 err

c5/d4 concentrate most errors. Force decisions in those zones.

Openings

2,440 gamesBased on 2,440 player games

Weaknesses

— exploit these— exploit these lines

No significant weaknesses detected as white

No significant weaknesses detected as black

Strengths

— avoid these— avoid these lines

aswhite72.7%wins

Sicilian: Sveshnikov — 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e511 g11 games · last played 12 years ago

aswhite67.4%wins

Modern Defense — 1.e4 g6 2.d4 Bg743 g43 games · last played 11 months ago

asblack48.6%wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6109 g109 games · last played 4 months ago

asblack45.7%wins

King's Indian: Main Line — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O70 g70 games · last played last year

Critical Blunders

10 errors · Stockfish

#25d4??Tacticsvs QuinnOTB · 2025

#62Ng1??Endgamevs GiffardOTB · 2024

#24Rhe1??Tacticsvs FtacnikOTB · 2023

#20Rac8??Tacticsvs LedermanOTB · 2022

#22d4c3??Endgamevs KarpovRapid · 1995

#23c7b5??Endgamevs KarpovRapid

#14a1b1??Endgamevs KarpovOTB

#35Rxf2??Tacticsvs KorchnoiOTB

#41b7??Endgamevs KorchnoiOTB

#33Ra6??Tacticsvs LarsenOTB

Recent Games

2,440 games

Draw

Olafsson, Helgi(2439)

World Senior Teams +65 · 28 Apr 2026

½-½

Win

Westerinen, Heikki M.J.(2205)

World Senior Teams +65 · 26 Apr 2026

0-1

Draw

Jussupow, Artur(2554)

World Senior Teams +65 · 25 Apr 2026

½-½

Draw

Gruenfeld, Yehuda(2367)

World Senior Teams +65 · 23 Apr 2026

½-½

Draw

Maier, Christian(2224)

World Senior Teams +65 · 22 Apr 2026

½-½

Draw

Ftacnik, Lubomir(2417)

World Senior Teams +65 · 21 Apr 2026

½-½

Endgame Statistics

PRO83 endgames (31.2%) · avoid Double Rook (0%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

31.2%

83 / 266

B vs N Pref

52.4%·47.8%

prefers the bishop

PiecesTypeWin %games

Rook + Equal Minors

77.9%353

R+Bishop vs R+Knight

79.4%306

Rook vs Minor (Exchange)

73.7%281

Rook vs Rook

72.6%252

Rook vs Two Minors

78.1%160

Pure Pawn

60.6%109

Rook + Equal Minors77.9%353

R+Bishop vs R+Knight79.4%306

Rook vs Minor (Exchange)73.7%281

Rook vs Rook72.6%252

Rook vs Two Minors78.1%160

Pure Pawn60.6%109

Weak in Double Rook: only 0% win rate (5 games) — Force thisShow all 14 types

Unlock Endgame Statistics

14 endgame categories — discover where they collapse under pressure

Repertoire

PRO

Move arrowsmost-played moves

Starting Position

SF18

1,232 games

50%39%11%

Move	games	%
1.e4	1219	69%
1.g3	7	57%
1.d4Strong	6	75%

MovegamesPerf%

1.e4

1219

69%

1.g3

57%

1.d4Strong

75%