Kozul, Zdenko

CRO CRO·Born 1966·FIDE #14502879·4,212 Games

FIDE OTB · #14502879 · 4,212 Games

Classical24834,018 g Games

Rapid2518131 g Games

Blitz253396 g Games

Play against Kozul's Twin

PRO

Uses their openings, level & style

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

Ready to play

4212 games analyzed

Statistics

Total

4212

Wins

1974

Draws

1357

Losses

881

47%32%21%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 93.6% average

Very consistent (88%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (68% in 228 games)

Deep Analysis

Stockfish 18 · Classical games · 509 analyzed

Accuracy by phase

Opening

96.8%

Middlegame

93.8%

Endgame

95.4%

Clutch Factor

+6%

Winning (+2)Winning (+2)

95%203g

EqualEqual position

95%178g

Losing (−2)Losing (−2)

89%119g

Accuracy under pressure

Problematic Pieces — which cause most errors?

23%

84 err

19%

71 err

19%

72 err

14%

51 err

14%

54 err

11%

41 err

Critical Moment

Move 40 avg

1-15

17%

16-25

28%

26-35

22%

36-45

33%

46+

33% of blunders after move 46 — keep the tension until then.of blunders occur in moves 46+. Keep the tension until that moment.

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

119

Hotspot zone

f4 / d5

Critical squares

16 err

14 err

12 err

f4/d5 account for most of the errors. Force decisions in those zones.

Openings

4,212 GamesBased on 4,212 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

aswhite68.9%Wins

King's Indian: Main Line — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O45 Games · last played 5 months ago

45 Games · last played 5 months ago

aswhite66.7%Wins

Reti vs King's Indian — 1.Nf3 Nf6 2.c4 g612 Games · last played 8 months ago

12 Games · last played 8 months ago

asblack53.2%Wins

Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e647 Games · last played 6 months ago

47 Games · last played 6 months ago

Critical Blunders

10 errors · Stockfish

#48Re2??Endgamevs JovanovicOTB · 2026

#48a4??Endgamevs JovanovicOTB · 2026

#52Nxg3??Endgamevs KovacevicOTB · 2026

#47Rf2??Endgamevs MakridisBlitz · 2025

#43Kh2??Endgamevs PostnyOTB · 2025

#39Rg5??Tacticsvs SafarliRapid · 2025

#22Nbd7??Tacticsvs KoellnerBlitz · 2025

#30Ng4??Tacticsvs RoseneckOTB · 2025

#53Be6??Endgamevs MazurOTB · 2024

#18Rxa4??Tacticsvs ZhukovskyiBlitz · 2024

Recent Games

4,212 Games

Draw

Bouska, Jiri(2321)

Kasparov CF Open 2026 · 30 Jun 2026

½-½

Win

Ulziikhishig Khishigbat(2319)

Kasparov CF Open 2026 · 30 Jun 2026

0-1

Draw

Suta, Andraz(2277)

Kasparov CF Open 2026 · 25 Jun 2026

½-½

Win

Rogic, Davor(2357)

Croatian Cup 2026 · 16 May 2026

0-1

Win

Havas, Juraj(2137)

Croatian Cup 2026 · 15 May 2026

0-1

Win

Karlovic, Luka(2114)

Croatian Cup 2026 · 14 May 2026

0-1

Endgame Statistics

PRO294 endgames (51.6%)

Strongest

64%

Queen vs Fortress

Weakest

21%

Queen vs Queen

Reaches Endgame

51.6%

294 / 570

B vs N Pref

45.5% · 28.6%

11 / 7

PiecesTypeWin %Games

Rook + Minor

36.6%161

Rook+Bishop vs Rook+Knight

31.6%76

Rook + Equal Minors

46.4%69

Rook vs Rook

27.7%65

Rook vs Minor (Exchange)

39.2%51

Queen vs Pieces

38.6%44

Rook + Minor36.6%161

Rook+Bishop vs Rook+Knight31.6%76

Rook + Equal Minors46.4%69

Rook vs Rook27.7%65

Rook vs Minor (Exchange)39.2%51

Queen vs Pieces38.6%44

Weakest: Queen vs Queen 21%Show all 23 types

Unlock Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

2135 Games

51%33%16%

Move	Games	%
1.d4	1870	67%
1.Nf3	228	68%
1.c4	33	58%
1.g3Strong	3	83%
1.e4	1	50%

MoveGamesPerformance%

1.d4

1870

67%

1.Nf3

228

68%

1.c4

58%

1.g3Strong

83%

1.e4

50%