Fedorchuk, Sergey A.

UKR UKR·Born 1981·FIDE #14102536

2599Classical

2596Rapid

2530Blitz

Statistics

Total3,570

Wins1,795

Draws1,203

Losses565

50%34%16%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 94.5% average

High resilience (59%): Dangerous even when losing

Solid conversion: 93%

Very consistent (90%)

Very precise: only 0.0 blunders/game

Dominates 1.e4 as

(73% in 1760 games)

Play against Fedorchuk's Twin

Uses their openings, level & style

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

Ready to play

3,570 games analyzed

Deep Analysis

Stockfish 18 · Classical · 651 analyzedStockfish 18 · Classical games · 651 analyzed

Accuracy by phase

Opening

97.1%

Middlegame

94.1%

Endgame

95.7%

Clutch Factor

+6%

Winning (+2)Winning (+2)

95%231g

EqualEqual position

96%207g

Losing (−2)Losing (−2)

89%62g

Accuracy under pressure

Problematic Pieces — which cause most errors?

24%

69 err

22%

61 err

16%

45 err

14%

41 err

12%

35 err

11%

32 err

Critical Moment

Move 39 avg

1-15

16-25

47%

26-35

35%

36-45

12%

46+

47% 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

106

Hotspot zone

f6 / d6

Critical squares

14 err

13 err

11 err

f6/d6 concentrate most errors. Force decisions in those zones.

Openings

3,570 gamesBased on 3,570 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

aswhite60.4%wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6341 g341 games · last played 2 weeks ago

aswhite84.8%wins

Modern Defense — 1.e4 g6 2.d4 Bg733 g33 games · last played 2 years ago

asblack54.6%wins

Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e6251 g251 games · last played last month

asblack73.0%wins

Reti: Double Fianchetto — 1.Nf3 Nf6 2.g3 b537 g37 games · last played last month

Critical Blunders

10 errors · Stockfish

#31Bf7??Tacticsvs BologanOTB · 2026

#25Nc3??Tacticsvs MaurizziOTB · 2026

#32Qxg6??Tacticsvs DecosterOTB · 2026

#36Qf6??Tacticsvs RoyalOTB · 2025

#52Nf4??Endgamevs PultineviciusOTB · 2025

#45Ke4??Endgamevs SeemannOTB · 2025

#23Qc2??Tacticsvs MilovOTB · 2025

#38Nf3??Tacticsvs DeodharOTB · 2025

#26Qh2??Tacticsvs BellahceneRapid · 2025

#39Rf8??Tacticsvs GarrigueOTB · 2025

Recent Games

3,570 games

Win

Sebag, Marie(2417)

50th Sitges Open 2026 · 30 Jul 2026

1-0

Loss

Wartiovaara, Oliver(2320)

50th Sitges Open 2026 · 29 Jul 2026

1-0

Win

Singh,Siddharth(2361)

50th Sitges Open 2026 · 28 Jul 2026

1-0

Loss

Jacobson, Brandon(2601)

50th Sitges Open 2026 · 27 Jul 2026

1-0

Win

Aguero Jimenez, Luis Lazaro(2472)

50th Sitges Open 2026 · 26 Jul 2026

1-0

Win

Ongut, Tamas Gunes(2358)

50th Sitges Open 2026 · 25 Jul 2026

1-0

Endgame Statistics

PRO353 endgames (44.1%) · avoid Opposite-Color Bishops (9%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

44.1%

353 / 800

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 Opposite-Color Bishops: only 9% win rate (11 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

1,817 games

57%31%12%

Move	games	%
1.e4Strong	1764	73%
1.c4	35	59%
1.d4	12	63%
1.Nf3Strong	6	83%

MovegamesPerf%

1.e4Strong

1764

73%

1.c4

59%

1.d4

63%

1.Nf3Strong

83%