Wieczorek, Oskar

POL POL·Born 1994·FIDE #1133950·2,284 Games

Classical24952,022 Games

Rapid2334149 Games

Blitz2387113 Games

Play against Wieczorek, Oskar's Twin

PRO

Uses their openings, level & style

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

Ready to play

2284 games analyzed

Statistics

Total

2284

Wins

1089

Draws

486

Losses

708

48%21%31%

Play Style

What you need to know before facing them

Elite accuracy: 92.5% average

Solid conversion: 83%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (75% in 53 games)

Deep Analysis

Stockfish 18 · Classical games · 186 analyzed

Accuracy by phase

Opening

96.2%

Middlegame

92.5%

Endgame

93.7%

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

+3%

Winning (+2 or more)

93%71g

Equal position

95%60g

Losing (-2 or more)

90%55g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

24%

47 errors

21%

41 errors

19%

37 errors

14%

27 errors

12%

23 errors

17 errors

Critical Moment — When does the first serious error occur?

Move 32 average

15%

54%

23%

1-15

16-25

26-35

36-45

46+

54% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

Hotspot zone

d5 / b4

Critical squares

12 err

7 err

6 err

d5/b4 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

No significant weaknesses detected as White

Black63.6%Loses

Ruy Lopez: Closed — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7

11 Games · last played 2 years agoPlay this line

Black53.8%Loses

Queen's Gambit Declined — 1.d4 d5 2.c4 e6

13 Games · last played 2 years agoPlay this line

Strengths

— avoid these lines

White56.2%Wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6194 Games · last played 3 months ago

Black51.1%Wins

Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e6174 Games · last played 2 years ago

Black46.2%Wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6117 Games · last played 3 months ago

Critical Blunders

10 errors · Stockfish

#43Nc4??Endgamevs IvanisevicOTB · 2026

#61Nc4+??Endgamevs PiekielnyRapid · 2024

#30Rb2+??Tacticsvs LukasiewiczRapid · 2024

#54Qxb7??Endgamevs FrommOTB · 2024

#39Qf3??Tacticsvs Martinez AlcantaraOTB · 2024

#29fxg3??Tacticsvs DudaOTB · 2024

#47Re2??Endgamevs MusialOTB · 2024

#26Nxd5??Tacticsvs CaruanaOTB · 2024

#25Rb3??Tacticsvs Martinez AlcantaraOTB · 2023

#36Qxe5??Tacticsvs MorandaRapid · 2023

Recent Games

2,284 Games

Adhiban, B.(2536)

57th Italian Teams Gp A · 28 Apr 2026

0-1

Korpa, Bence(2526)

57th Italian Teams Gp A · 27 Apr 2026

½-½

Sarana, Alexey(2658)

57th Italian Teams Gp A · 27 Apr 2026

½-½

Ivanisevic, Ivan(2543)

57th Italian Teams Gp A · 26 Apr 2026

1-0

Teclaf, Pawel(2572)

57th Italian Teams Gp A · 25 Apr 2026

½-½

Mastrovasilis, Dimitrios(2526)

57th Italian Teams Gp A · 25 Apr 2026

½-½

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

1145 Games

52%20%28%

Move	Games	%
1.e4	1004	62%
1.c4	53	64%
1.Nf3 Strong	53	76%
1.d4	17	62%
1.Nc3	6	58%
1.b3 Strong	6	92%
1.g3	5	50%
1.c3 Weak	1	0%

MoveGamesPerformance%

1.e4

1004

62%

1.c4

64%

1.Nf3Strong

76%

1.d4

62%

1.Nc3

58%

1.b3Strong

92%

1.g3

50%

1.c3Weak