Nemec, Jachym

CZE CZE·Born 2008·FIDE #23716525·758 Games

Classical2477658 Games

Rapid238056 Games

Blitz235444 Games

Play against Nemec, Jachym's Twin

PRO

Uses their openings, level & style

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

Ready to play

758 games analyzed

Statistics

Total

758

Wins

319

Draws

189

Losses

250

42%25%33%

Play Style

What you need to know before facing them

Elite accuracy: 92.7% average

Solid conversion: 81%

Very consistent (91%)

Very precise: only 0.0 blunders/game

Dominates 1.Nf3 ♔ (68% in 73 games)

Vulnerable to 1.Nf3 ♚ (only 40%)

Deep Analysis

Stockfish 18 · Classical games · 420 analyzed

Accuracy by phase

Opening

96.5%

Middlegame

92.8%

Endgame

94.0%

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

+4%

Winning (+2 or more)

94%178g

Equal position

94%126g

Losing (-2 or more)

90%116g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

22%

96 errors

20%

86 errors

19%

82 errors

16%

72 errors

14%

63 errors

41 errors

Critical Moment — When does the first serious error occur?

Move 43 average

31%

1-15

16-25

26-35

36-45

46+

31% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

113

Hotspot zone

d5 / e3

Critical squares

13 err

12 err

11 err

d5/e3 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

White83.3%Loses

Nimzo-Indian: Capablanca — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3

12 Games · last played 5 months agoPlay this line

Black60.0%Loses

Grünfeld — 1.d4 Nf6 2.c4 g6 3.Nc3 d5

10 Games · last played 3 years agoPlay this line

Black57.1%Loses

Slav Defense — 1.d4 d5 2.c4 c6

21 Games · last played 11 months agoPlay this line

Strengths

— avoid these lines

White63.6%Wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d611 Games

White60.0%Wins

Reti: KIA — 1.Nf3 d5 2.g3 Nf615 Games

Black46.2%Wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d639 Games

Critical Blunders

10 errors · Stockfish

#34Be3??Tacticsvs HavelkaOTB · 2025

#46Nf3??Endgamevs KrzyzanowskiOTB · 2025

#47Bxa5??Endgamevs TrhalRapid · 2025

#39Rg5??Tacticsvs KusaRapid · 2025

#30Re8??Tacticsvs LihotskyRapid · 2025

#28Kc4??Tacticsvs KrejciOTB · 2025

#38g3??Endgamevs DotzerOTB · 2025

#32Qb7??Tacticsvs StevikOTB · 2025

#25Qh5??Tacticsvs CostaOTB · 2025

#51Bb1??Endgamevs ValiyevOTB · 2025

Recent Games

758 Games

Stocek, Jiri(2500)

ch-CZE 2026 · 16 May 2026

1-0

Zilka, Stepan(2516)

ch-CZE 2026 · 15 May 2026

½-½

Hrbek, Stepan(2466)

ch-CZE 2026 · 14 May 2026

½-½

Kriebel, Tadeas(2524)

ch-CZE 2026 · 13 May 2026

0-1

Navara, David(2624)

ch-CZE 2026 · 12 May 2026

½-½

Finek, Vaclav(2573)

ch-CZE 2026 · 11 May 2026

1-0

Endgame Statistics

PRO23 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

384 Games

46%28%26%

Move	Games	%
1.d4	268	58%
1.Nf3	73	68%
1.e4	27	50%
1.c4	9	61%
1.b3	7	64%

MoveGamesPerformance%

1.d4

268

58%

1.Nf3

68%

1.e4

50%

1.c4

61%

1.b3

64%