Players
Jakub Kosakowski
Photo: Yunfan Zhao
GM

Jakub Kosakowski

PolandBorn 2002 (age 24)FIDE ID 1185080

Luft classical

24002500260027002023202420252026
Monthly Luft ratings, now 2492
FIDE

FIDE classical

2000220024002600201620182020202220242026
Monthly FIDE ratings, now 2523
Luft

Flair

Jakub Kosakowski's classical flairs

0 of 19 earned over the last 12 months

  • TitanLuft classical rating averaging 2800+ over the last 4 years
  • Serial WinnerWon 2+ elite events in the last 12 months
  • UnderdogRegularly beats players rated 50+ higher
  • Fortress25+ games in a row without a loss
  • Black BeltDoes better with black than with white
  • IronmanPlayed 50+ games over the last 12 months
  • RisingAged 18 or under, Luft rating up 40+ over the last 12 months
  • Endgame SpecialistEndgame 90+: converting, saving and not throwing endgames
  • TacticianTactics 90+: sharp, tactical games they made sharp
  • LightningTop 20 at speed chess (mostly blitz, some rapid)
  • Hot StreakAt least 6 points from 7 straight games against strong opposition
  • SignatureSticks to one defence with black far more than most
  • ChameleonPlays a wide range of defences with black
  • WildcardBrilliant one event, off the next: hard to predict
  • ReliableConsistent across all top events
  • FighterRarely draws, and wins far more than they lose
  • AdaptableTactics and Positional both 90+
  • PositionalPositional 90+: slow, quiet games they steered
  • PodiumTop 3 in at least half of their elite events

No classical flair in the last year yet.

Trophy cabinet

No classical titles on record yet.

Attributes

Tactics 75Positional 76Endgame 72Openings 73Composure 72Defence 75Speed 75Consistency 75

Luft classical rating

2492No. 292

From 20 classical games in top events over the last year, playing at a 2477 level.

ResultsPlayed at a 2477 level, blended with their FIDE rating−10
Tournament winsNone in the last year0
FormThe last 3 months against the whole year−10
ConsistencyHow steady they are from event to event−8
Activity20 classical games in top events−3

Openings

Their most-played, from 46 classical games in top events over the last 4 years

OpeningGamesScore
Sicilian Defense750%
Italian Game438%
French Defense350%
Scotch Game275%
Four Knights Game250%

Sicilian Defense

With White: 7 games, won 2, drew 3, lost 2 · 50%

VariationGamesScore
Najdorf Variation275%
Lasker-Pelikan Variation275%
Nyezhmetdinov-Rossolimo Attack150%
Old Sicilian10%
Hyperaccelerated Dragon10%

Italian Game

With White: 4 games, won 0, drew 3, lost 1 · 38%

VariationGamesScore
Two Knights Defense250%
Giuoco Pianissimo150%
Classical Variation10%

French Defense

With White: 3 games, won 1, drew 1, lost 1 · 50%

VariationGamesScore
Winawer Variation350%

Scotch Game

With White: 2 games, won 1, drew 1, lost 0 · 75%

VariationGamesScore
Main line1100%
Schmidt Variation150%

Four Knights Game

With White: 2 games, won 0, drew 2, lost 0 · 50%

VariationGamesScore
Scotch Variation Accepted250%

Caro-Kann Defense

With Black: 5 games, won 0, drew 3, lost 2 · 30%

VariationGamesScore
Exchange Variation250%
Advance Variation20%
Endgame Offer150%

English Opening

With Black: 5 games, won 0, drew 2, lost 3 · 20%

VariationGamesScore
Agincourt Defense225%
King's English Variation20%
Anglo-Indian Defense150%

Sicilian Defense

With Black: 4 games, won 2, drew 1, lost 1 · 63%

VariationGamesScore
Moscow Variation250%
Najdorf Variation1100%
Prins Variation150%

Bogo-Indian Defense

With Black: 3 games, won 0, drew 2, lost 1 · 33%

VariationGamesScore
Nimzowitsch Variation333%

Queen's Gambit Declined

With Black: 2 games, won 0, drew 1, lost 1 · 25%

VariationGamesScore
Ragozin Defense225%

Recent events

See all
EventPlace+/−+/−
sachy.cz Extraliga 2026/2731 Oct 2026½/10+1
46th FIDE Chess Olympiad Samarkand 202627 Sep 20263½/6−5−5
German Bundesliga 2025/2626 Apr 20264/11−7−5
European Individual Chess Championship 202619 Apr 2026=53rd+2+4
European Team Chess Championship 202513 Oct 20252/5−9−11

Best wins

OpponentRating
GMJ. Bjerre17 Nov 2024 · European Individual Chess Championship 20242654
GME. Gurel15 Nov 2024 · European Individual Chess Championship 20242635
GMM. Petrosyan18 Nov 2024 · European Individual Chess Championship 20242612
GMT. Banusz28 Feb 2026 · German Bundesliga 2025/262602
GMJ. Smeets27 Apr 2025 · German Bundesliga 2024/252568

Most played

OpponentGamesWDL
GMJ. BjerreLast 15 Apr 2026 · European Individual Chess Championship 20262110
GMA. DonchenkoLast 19 Sep 2026 · 46th FIDE Chess Olympiad Samarkand 20262011
GMD. DardhaLast 3 Apr 2024 · Menorca Open 20241001
GMI. GorshteinLast 7 Apr 2024 · Menorca Open 20241001
GMD. YuffaLast 25 Jul 2024 · Dole France Throphy Nextlane Grand Prix 20241001

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How attributes are calculated

From their games in top events over the last 12 months, each judged against the opponent's rating

  • TacticsHow well they score in sharp games they chose to make sharp.
  • PositionalHow well they score in quiet, manoeuvring games they steered.
  • EndgameHow they do in endgames against what the position promised when it began: converting a winning one earns a little, saving a losing one earns a lot, and throwing a winning one costs a lot.
  • OpeningsThe engine's verdict on their position around moves 15 to 20, against what's normal for that colour, as the score it points to. Over the last 4 years, with older games counting less.
  • ComposureHow well they score under pressure: the game straight after a loss, and the last 3 games of an event while they can still win it. Over the last 4 years.
  • DefenceHow they do in games where they were 0.8 pawns or more worse after move 18, against what that position usually scores: holding the draw earns, turning it around earns more, and losing costs a little.
  • SpeedTheir Luft rapid and blitz ratings. With neither, an estimate a little below their classical level.
  • ConsistencyTheir Luft rating, less their off days: tournaments (5+ games each) over the last 4 years where they played 50+ below it. Anything better never counts against them.

  • "How well they score" is a performance rating: the opponent's rating, plus 400 for a win and minus 400 for a loss, averaged. So it's always judged against who they played.

    The score out of 100: 80 is a 2600 level, and each 13 rating points adds one, so 2860 and up is 100.

    Fair to everyone: with only a few games of a kind, the result leans towards their overall Luft rating. Strengths and weaknesses are measured against their overall level and compared with the top 100, so a specialist's best side stands out. A little recent form is added to all but Speed.