Hellers, Ferdinand

SWE SWE·Born 1969·FIDE #1700022

2581Classical

2336Rapid

2355Blitz

Statistics

Total961

Wins364

Draws408

Losses189

38%42%20%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 92.0% average

Very consistent (88%)

Very precise: only 0.1 blunders/game

Dominates 1.e4 as

(65% in 447 games)

Vulnerable to 1.d4

(only 39%)

Play against Hellers's Twin

Uses their openings, level & style

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

Ready to play

961 games analyzed

Deep Analysis

Stockfish 18 · Classical · 119 analyzedStockfish 18 · Classical games · 119 analyzed

Accuracy by phase

Opening

96.5%

Middlegame

92.6%

Endgame

94.2%

Clutch Factor

+6%

Winning (+2)Winning (+2)

94%39g

EqualEqual position

94%41g

Losing (−2)Losing (−2)

88%39g

Accuracy under pressure

Problematic Pieces — which cause most errors?

21%

27 err

19%

25 err

19%

25 err

18%

23 err

15%

19 err

11 err

Critical Moment

Move 26 avg

14%

1-15

14%

16-25

71%

26-35

36-45

46+

71% of blunders occur after move 26-35 — keep tension until then.of blunders occur after move 26-35 — keep tension until then.

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

Hotspot zone

f5 / e4

Critical squares

8 err

7 err

5 err

4 err

f5/e4 concentrate most errors. Force decisions in those zones.

Openings

961 gamesBased on 961 player games

Weaknesses

— exploit these— exploit these lines

aswhite50.0%losses

Caro-Kann: Classical — 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5

8 games · low sample · last played 3 years agoPlay this line

No significant weaknesses detected as black

Strengths

— avoid these— avoid these lines

aswhite58.3%wins

Sicilian: Dragon — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g612 g12 games · last played 19 years ago

asblack47.6%wins

Sicilian: Najdorf — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a642 g42 games · last played 2 years ago

asblack50.0%wins

Alekhine Defense — 1.e4 Nf6 2.e5 Nd510 g10 games · last played 2 years ago

Critical Blunders

10 errors · Stockfish

#45Qh6??Endgamevs SmeetsRapid · 2025

#27Kf1??Tacticsvs GiriRapid · 2025

#75h4??Endgamevs SoderstromOTB · 2024

#41Kf3??Endgamevs ErnstOTB · 2024

#18Ng4??Tacticsvs SeoOTB · 2024

#12Nxf4??Tacticsvs BengtssonOTB · 2024

#27Rc6??Tacticsvs BerggrenOTB · 2024

#29Rc1??Tacticsvs AdlerOTB · 2024

#40Ke2??Tacticsvs FridmanOTB · 2024

#59Rd8??Endgamevs PechacRapid · 2024

Recent Games

961 games

Win

Kucuksari, Kaan(2452)

Rond 9: Hellers, Ferdinan... · 8 Mar 2026

1-0

Win

Kucuksari, Kaan(2441)

TCh-SWE Elitserien · 8 Mar 2026

1-0

Loss

Miezis, Normunds(2356)

V GM Sveshnikov Evgeny ra... · 22 Feb 2026

1-0

Draw

Lobron, Eric(2546)

V GM Sveshnikov Evgeny ra... · 22 Feb 2026

½-½

Win

Lanka, Zigurds(2286)

GM Sveshnikov Evgeny blit... · 20 Feb 2026

1-0

Loss

Lobron, Eric(2546)

GM Sveshnikov Evgeny blit... · 20 Feb 2026

1-0

Endgame Statistics

PRO89 endgames (53.3%) · avoid Rook + Bishop Pair (0%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

53.3%

89 / 167

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 Rook + Bishop Pair: only 0% win rate (9 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

492 games

44%39%17%

Move	games	%
1.e4	447	65%
1.d4	22	39%
1.Nf3	21	48%
1.c4Strong	2	75%

MovegamesPerf%

1.e4

447

65%

1.d4

39%

1.Nf3

48%

1.c4Strong

75%