Zuidema, Coen

NED NED·Born 1942·FIDE #1000101

2450Classical

—Rapid

—Blitz

Statistics

Total461

Wins144

Draws192

Losses125

31%42%27%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 94.0% average

Plays 5.5% better with white

Very consistent (90%)

Very precise: only 0.0 blunders/game

Dominates 1.d4 as

(58% in 62 games)

Vulnerable to 1.Nf3

(only 38%)

Play against Zuidema's Twin

Uses their openings, level & style

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461 games analyzed

Deep Analysis

Stockfish 18 · Classical · 16 analyzedStockfish 18 · Classical games · 16 analyzed

Accuracy by phase

Opening

96.0%

Middlegame

93.1%

Endgame

93.7%

Clutch Factor

-5%

Winning (+2)Winning (+2)

85%0g

EqualEqual position

97%4g

Losing (−2)Losing (−2)

90%12g

Accuracy under pressure

Problematic Pieces — which cause most errors?

29%

10 err

26%

9 err

15%

5 err

15%

5 err

3 err

2 err

Critical Moment

Move 30 avg

1-15

16-25

26-35

36-45

46+

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

Hotspot zone

d5 / f8

Critical squares

4 err

3 err

2 err

d5/f8 concentrate most errors. Force decisions in those zones.

Openings

461 gamesBased on 461 player games

Weaknesses

— exploit these— exploit these lines

aswhite41.9%losses

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6

31 games · last played 45 years agoPlay this line

No significant weaknesses detected as black

Strengths

— avoid these— avoid these lines

aswhite56.3%wins

Sicilian: Kan — 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a616 g16 games

asblack60.0%wins

Nimzo-Indian: Rubinstein — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e310 g10 games · last played 62 years ago

Critical Blunders

Tactical errors analyzed with Stockfish

No blunders recorded

Recent Games

461 games

Loss

Douwes, I.

? · 1 Jan 1986

1-0

Loss

Van der Wiel, John T.H.(2555)

? · 1 Jan 1986

1-0

Win

Van der Wiel, John T.H.(2470)

? · 9 Jan 1982

0-1

Win

Van der Poel, Henk

? · 1 Jan 1982

1-0

Win

Bredewout, Henk

? · 1 Jan 1977

1-0

Win

Van Schoor, Karl

? · 5 Sept 1976

0-1

Endgame Statistics

PRO8 endgames (50%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

50%

8 / 16

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 : only 0% win rate (0 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

228 games

33%45%22%

Move	games	%
1.e4	221	56%
1.d4	3	33%
1.c4Weak	1	0%
1.a3Strong	1	100%
1.Nf3Strong	1	100%
1.b3	1	50%

MovegamesPerf%

1.e4

221

56%

1.d4

33%

1.c4Weak

1.a3Strong

100%

1.Nf3Strong

100%

1.b3

50%