Korneev, Oleg

ESP ESP·Born 1969·FIDE #4156803

2429Classical

2419Rapid

2437Blitz

Statistics

Total4,989

Wins2,448

Draws2,025

Losses514

49%41%10%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 95.1% average

High resilience (57%): Dangerous even when losing

Solid conversion: 90%

Very consistent (90%)

Very precise: only 0.0 blunders/game

Dominates 1.b3 as

(85% in 10 games)

Play against Korneev's Twin

Uses their openings, level & style

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

Ready to play

4,989 games analyzed

Deep Analysis

Stockfish 18 · Classical · 701 analyzedStockfish 18 · Classical games · 701 analyzed

Accuracy by phase

Opening

97.1%

Middlegame

94.9%

Endgame

96.4%

Clutch Factor

+5%

Winning (+2)Winning (+2)

95%220g

EqualEqual position

96%247g

Losing (−2)Losing (−2)

90%33g

Accuracy under pressure

Problematic Pieces — which cause most errors?

26%

52 err

17%

35 err

17%

35 err

16%

32 err

12%

24 err

11%

23 err

Critical Moment

Move 38 avg

1-15

13%

16-25

40%

26-35

13%

36-45

27%

46+

40% 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

e5 / c4

Critical squares

13 err

11 err

7 err

6 err

e5/c4 concentrate most errors. Force decisions in those zones.

Openings

4,989 gamesBased on 4,989 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

aswhite57.6%wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6417 g417 games · last played 4 weeks ago

aswhite87.5%wins

Philidor Defense — 1.e4 e5 2.Nf3 d616 g16 games · last played 8 years ago

asblack46.7%wins

Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e6375 g375 games · last played 3 weeks ago

asblack61.1%wins

Reti: Gambit — 1.Nf3 d5 2.c4 d418 g18 games · last played 8 years ago

Critical Blunders

10 errors · Stockfish

#56Ke6??Endgamevs BauerOTB · 2026

#18Bxe5??Tacticsvs GalyasOTB · 2025

#42Rg1??Endgamevs JiangOTB · 2025

#60Rc5+??Endgamevs AumuellerOTB · 2025

#35d5??Tacticsvs MedhusOTB · 2025

#141Nf5+??Endgamevs VolokitinOTB · 2025

#17Qd5??Tacticsvs KanepBlitz · 2025

#26Nd7??Tacticsvs NeiksansRapid · 2025

#48Qd6??Endgamevs Iturrizaga BonelliRapid · 2025

#56Ne6??Endgamevs GorkovRapid · 2025

Recent Games

4,989 games

Loss

Jackson, James P(2381)

Sussex University Masters · 26 Jul 2026

1-0

Win

Badacsonyi, Stanley(2312)

Sussex University Masters · 25 Jul 2026

1-0

Loss

Zilka, Stepan(2526)

Sussex University Masters · 25 Jul 2026

0-1

Win

Kilambi, Venkata Ananth Akshay(2021)

Sussex University Masters · 24 Jul 2026

0-1

Draw

Shearsby, Jude(2243)

Sussex University Masters · 23 Jul 2026

½-½

Win

Raposo,Maxwell(1890)

Sussex University Masters · 23 Jul 2026

1-0

Endgame Statistics

PRO350 endgames (48.6%) · avoid Opposite-Color Bishops (18%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

48.6%

350 / 720

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 18% 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

2,497 games

56%35%9%

Move	games	%
1.e4Strong	2388	74%
1.d4Strong	85	74%
1.c4	13	65%
1.Nf3	10	65%
1.b3	1	50%

MovegamesPerf%

1.e4Strong

2388

74%

1.d4Strong

74%

1.c4

65%

1.Nf3

65%

1.b3

50%