Baum, Jonasz

POL POL·Born 2004·FIDE #1195360·1,217 Games

Classical24491,103 Games

Rapid237750 Games

Blitz238364 Games

Play against Baum, Jonasz's Twin

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1217 games analyzed

Statistics

Total

1217

Wins

518

Draws

331

Losses

365

43%27%30%

Play Style

What you need to know before facing them

Elite accuracy: 93.1% average

Solid conversion: 86%

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.d4 ♔ (63% in 338 games)

Vulnerable to 1.c4 ♚ (only 42%)

Deep Analysis

Stockfish 18 · Classical games · 561 analyzed

Accuracy by phase

Opening

96.6%

Middlegame

92.9%

Endgame

95.2%

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)

94%217g

Equal position

94%167g

Losing (-2 or more)

89%116g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

23%

111 errors

20%

99 errors

18%

88 errors

18%

87 errors

14%

67 errors

41 errors

Critical Moment — When does the first serious error occur?

Move 44 average

13%

30%

23%

33%

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

153

Hotspot zone

f3 / d6

Critical squares

21 err

18 err

16 err

15 err

f3/d6 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

White43.8%Loses

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

16 Games · last played last yearPlay this line

White44.4%Loses

Grünfeld — 1.d4 Nf6 2.c4 g6 3.Nc3 d5

9 Games · Low sample · last played 2 years agoPlay this line

Black100.0%Loses

Reti: Gambit — 1.Nf3 d5 2.c4 e6

8 Games · Low sample · last played last yearPlay this line

Black65.0%Loses

Sicilian: Rossolimo — 1.e4 c5 2.Nf3 Nc6 3.Bb5

20 Games · last played 2 years agoPlay this line

Strengths

— avoid these lines

White64.7%Wins

Slav: Semi-Slav — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc317 Games

White59.4%Wins

Sicilian: Open — 1.e4 c5 2.Nf3 d6 3.d432 Games

Black62.5%Wins

Sicilian: Sveshnikov — 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e516 Games

Black50.0%Wins

Reti: KIA — 1.Nf3 d5 2.g3 g612 Games · last played 7 months ago

Critical Blunders

10 errors · Stockfish

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#45Nf5??Endgamevs HeberlaOTB · 2025