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Player profile

Koska, Jiri

Standard: 1989 Rapid: 1875 Blitz: 1753 (last updated 2026-11-02)
FIDE ID: 73620874 (view FIDE profile)
Federation: SVK
Federation: SVK Sex: M Birth Year: 2007 Age: 19
Title: — Women's title: — Other title: NA FOA title: —
Games: 58 Wins: 23 (40%) Draws: 18 (31%) Losses: 17 (29%)
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Dossier

57 of 58 games analyzed.

Accuracy: 91.3%
Opened Nf3: 10/18Opened c4: 3/18Opened e4: 3/18Opened b3: 1/18Opened d4: 1/18
Castled kingside: 34Same-side castling: 30Opposite-side castling: 4Did not castle: 3Castled queenside: 2
Fianchettoed kingside: 21Played on the queenside: 12Played on the kingside: 12Fianchettoed queenside: 11Played in the center: 8
Backward pawn: 25Active pieces: 25Initiated exchanges: 23Kept the bishop pair: 22Space advantage: 20Sacrificed material: 20Isolated pawn: 15Missed tactics: 14Avoided exchanges: 4Played gambits: 2
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Openings

Click "+" to add that group to the games list below. Multiple groups can be added at once.

As White 19 games 10W 7D 2L
English Opening 4 games 3W 0D 1L
Symmetrical Variation 3 games 2W 0D 1L
Fianchetto Variation 2 games 2W 0D 0L
Three Knights Variation 1 game 0W 0D 1L
Agincourt Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
King's Indian Attack 3 games 3W 0D 0L
(unspecified) 2 games 2W 0D 0L
(unspecified) 2 games 2W 0D 0L
Sicilian Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Nimzo-Larsen Attack 3 games 2W 1D 0L
Classical Variation 2 games 1W 1D 0L
(unspecified) 2 games 1W 1D 0L
Indian Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Zukertort Opening 3 games 0W 3D 0L
Pirc Invitation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Sicilian Invitation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Italian Game 2 games 0W 1D 1L
Giuoco Piano 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Classical Variation 1 game 0W 1D 0L
Giuoco Pianissimo 1 game 0W 1D 0L
King's Indian Defense 1 game 1W 0D 0L
Fianchetto Variation 1 game 1W 0D 0L
Panno Variation 1 game 1W 0D 0L
Indian Defense 1 game 0W 1D 0L
Accelerated London System 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Petrov's Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
King's Indian Attack, with Bf5 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
As Black 21 games 8W 7D 6L
French Defense 8 games 5W 2D 1L
Exchange Variation 2 games 2W 0D 0L
(unspecified) 2 games 2W 0D 0L
Advance Variation 2 games 1W 1D 0L
Paulsen Attack 1 game 1W 0D 0L
Euwe Variation 1 game 0W 1D 0L
Classical Variation 1 game 1W 0D 0L
Burn Variation, Morozevich Line 1 game 1W 0D 0L
Steinitz Variation 1 game 0W 1D 0L
Boleslavsky Variation 1 game 0W 1D 0L
La Bourdonnais Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Wing Gambit 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
King's Indian Defense 3 games 0W 1D 2L
Orthodox Variation 2 games 0W 1D 1L
(unspecified) 2 games 0W 1D 1L
Fianchetto Variation 1 game 0W 0D 1L
Yugoslav Variation 1 game 0W 0D 1L
Benko Gambit Accepted 3 games 2W 0D 1L
King Walk Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Fully Accepted Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Pawn Return Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
English Orangutan 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
King's Indian Attack 1 game 0W 0D 1L
Sicilian Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Caro-Kann Defense 1 game 1W 0D 0L
Advance Variation 1 game 1W 0D 0L
Botvinnik-Carls Defense 1 game 1W 0D 0L
Scandinavian Defense 1 game 0W 0D 1L
Classical Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
English Opening 1 game 0W 1D 0L
Anglo-Indian Defense 1 game 0W 1D 0L
Queen's Knight Variation 1 game 0W 1D 0L
Owen Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Bird Opening 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Blunders Top 4 of 250

This player's costliest moves in analyzed games. Can you find the winning move?

????.??.?? · 31... Rb7 (−54.1% win chance) 1-0
Koska, Jiri
Radnaev, Nomin
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2023.09.30 · 28... exf6 (−40.8% win chance) 1/2-1/2
Koska, Jiri
Skrbec, Leon
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2024.09.07 · 35. Rxc2 (−35.5% win chance) 1/2-1/2
Verba, Vladimir
Koska, Jiri
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2024.06.17 · 56. Rf3 (−35.3% win chance) 0-1
Zvarik, Martin
Koska, Jiri
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Games Showing all 58 games
Date Event Round Color Opponent Result Accuracy % First moves