What is Jakub Kosakowski's FIDE rating?

Jakub Kosakowski's FIDE rating is 2520 standard, 2551 rapid, 2528 blitz. Chess Stalker tracks it together with Jakub Kosakowski's over-the-board games and opening repertoire.

How many OTB games has Jakub Kosakowski played?

The Chess Stalker database holds 2,971 over-the-board games by Jakub Kosakowski (2,724 classical, 115 rapid, 154 blitz), with 55% wins. The full list, with openings and results, is on Jakub Kosakowski's Chess Stalker profile.

How do I prepare against Jakub Kosakowski?

Open Jakub Kosakowski's free Chess Stalker report: opening repertoire with results per line as White and Black, recurring weaknesses and blunder patterns evaluated with Stockfish, and recent games. Then rehearse against the Twin Bot, which imitates Jakub Kosakowski's style, before facing them.

Jakub Kosakowski

Polandborn 2002FIDE ID 1185080

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026

2440

2480

2520

2560

Peak2551

2494 · Sep 2023

Oct

2024

Apr

Jul

Oct

2025

Apr

Jul

Oct

2026

Apr

Jul

Oct

Sep 2023Oct 2026

2551Rapid

2528Blitz

2520Classical

2551peak, Jul 2025

2,971games

1,636wins, 55%

566draws, 19%

766losses, 26%

Rated gamesInactive · rating frozenOfficial FIDE lists · drag the range below the chartPeak 2551 · Jul 2025

Play style

before facing themWhat you need to know before facing them

Elite accuracy: 93.6% average

Solid conversion: 84%

Very consistent (91%)

Very precise: only 0.1 blunders/game

Dominates 1.d4 as

(78% in 154 games)

Vulnerable to 1.b3

(only 48%)

Play against Kosakowski's Twin

Their real openings, level & style

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

Based on

2,971 games

Based on 2,971 games

Openings

2,971 gamesBased on 2,971 player games

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White

Slav Defense1.d4 d5 2.c4 c612 games, last played 7 months ago75.0%wins

Sicilian: e6 Systems1.e4 c5 2.♞f3 e6122 games, last played last month59.8%wins

Deep analysis

Stockfish · Classical · 703 analyzedStockfish · Classical games · 703 analyzed

Accuracy by phase

Opening

96.8%

Middlegame

93.3%

Endgame

95.1%

Clutch factor

+5%

Winning (+2)Winning (+2)

95%212g

EqualEqual position

95%170g

Losing (−2)Losing (−2)

90%118g

Accuracy under pressure barely drops when losing.

Problematic pieces

28%

142 err

18%

89 err

16%

82 err

15%

73 err

13%

63 err

10%

52 err

Critical moment

Move 41 avg

1-15

16-25

38%

26-35

15%

36-45

38%

46+

38% of blunders occur after move 26-35. Keep tension until then.of blunders occur after move 26-35. Keep tension until then.

Error heatmap · Critical squaresError heatmap

Few

Many

146Errors mapped

c5 / d4Hotspot zone

Critical squares

1818 err

1717 err

1616 err

1515 err

c5/d4 concentrate most errors. Force decisions in those zones.

Critical blunders

10 errors · Stockfish

#34

♛e3?? vs Kazakouski

Middlegame · OTB · 2026

#33

♞e3?? vs Andreikin

Endgame · OTB · 2026

#28

♜3f6?? vs Maghsoodloo

Middlegame · OTB · 2026

#63

g5?? vs Bortnyk

Endgame · OTB · 2026

#14

♞xe5?? vs Pranav

Middlegame · OTB · 2026

#44

♜hg2+?? vs Sevian

Endgame · OTB · 2026