Kociscak, Jiri

CZE CZE·Born 1993·FIDE #322121·886 Games

Classical2486839 Games

Rapid242710 Games

Blitz247537 Games

Play against Kociscak, Jiri's Twin

PRO

Uses their openings, level & style

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886 games analyzed

Statistics

Total

886

Wins

413

Draws

240

Losses

233

47%27%26%

Play Style

What you need to know before facing them

Elite accuracy: 93.7% average

Solid conversion: 81%

Very consistent (91%)

Very precise: only 0.0 blunders/game

Dominates 1.d4 ♔ (67% in 359 games)

Vulnerable to 1.c4 ♚ (only 43%)

Deep Analysis

Stockfish 18 · Classical games · 78 analyzed

Accuracy by phase

Opening

96.5%

Middlegame

94.0%

Endgame

96.0%

Clutch Factor — Move accuracy when winning vs. equal vs. losing — does their level drop when the game turns against them?

+5%

Winning (+2 or more)

95%28g

Equal position

95%28g

Losing (-2 or more)

91%22g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

27%

13 errors

23%

11 errors

17%

8 errors

15%

7 errors

10%

5 errors

4 errors

Critical Moment — When does the first serious error occur?

Move 51 average

100%

1-15

16-25

26-35

36-45

46+

100% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

Hotspot zone

e4 / e5

Critical squares

5 err

3 err

2 err

e4/e5 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

White50.0%Loses

Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e6

10 Games · last played 16 years agoPlay this line

Black55.6%Loses

Sicilian: Classical — 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6

9 Games · Low sample · last played 16 years agoPlay this line

Strengths

— avoid these lines

White72.2%Wins

Queen's Gambit Declined — 1.d4 d5 2.c4 e636 Games · last played 5 years ago

White64.7%Wins

Catalan — 1.d4 Nf6 2.c4 e6 3.g317 Games · last played 5 years ago

Black65.2%Wins

Scotch: Classical — 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc523 Games

Black51.5%Wins

Ruy Lopez: Closed — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be733 Games

Critical Blunders

Tactical errors analyzed with Stockfish

No blunders recorded

Recent Games

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Endgame Statistics

PRO21 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

21 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

443 Games

52%28%20%

Move	Games	Performance	%
1.d4	359		67%
1.e4	84		61%

MoveGamesPerformance%

1.d4

359

67%

1.e4

61%