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Player profile

Zak, Ondrej

Standard: 1527 Rapid: 1510 Blitz: 1478 (last updated 2026-11-02)
FIDE ID: 23768959 (view FIDE profile)
Federation: CZE Sex: M Birth Year: 2014 Age: 12
Title: — Women's title: — Other title: — FOA title: —
Games: 23 Wins: 8 (35%) Draws: 2 (9%) Losses: 13 (57%)
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Dossier

22 of 23 games analyzed.

Accuracy: 85.6%
Opened e4: 10/10
Castled kingside: 14Same-side castling: 13Did not castle: 3Opposite-side castling: 2Castled queenside: 1
Played in the center: 5Fianchettoed kingside: 4Fianchettoed queenside: 4Played on the queenside: 4Played on the kingside: 3
Active pieces: 15Initiated exchanges: 10Missed tactics: 10Space advantage: 9Sacrificed material: 8Kept the bishop pair: 8Isolated pawn: 6Backward pawn: 6Avoided exchanges: 4Played gambits: 3
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Openings

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As White 10 games 4W 1D 5L
Sicilian Defense 5 games 0W 1D 4L
Lasker-Pelikan Variation 1 game 0W 0D 1L
Retreat Variation 1 game 0W 0D 1L
O'Kelly Variation 1 game 0W 1D 0L
Normal System, Taimanov Line 1 game 0W 1D 0L
Marshall Counterattack 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Löwenthal Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Kan Variation 1 game 0W 0D 1L
Knight Variation 1 game 0W 0D 1L
Italian Game 2 games 1W 0D 1L
Classical Variation 2 games 1W 0D 1L
(unspecified) 1 game 1W 0D 0L
Greco Gambit, Traditional Line 1 game 0W 0D 1L
Scotch Game 1 game 1W 0D 0L
Benima Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Caro-Kann Defense 1 game 1W 0D 0L
Exchange Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
King's Pawn Game 1 game 1W 0D 0L
Busch-Gass Gambit 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
As Black 8 games 3W 1D 4L
English Opening 3 games 1W 1D 1L
Symmetrical Variation 1 game 0W 0D 1L
Three Knights Variation 1 game 0W 0D 1L
Anglo-Indian Defense 1 game 0W 1D 0L
King's Knight Variation 1 game 0W 1D 0L
King's English Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Caro-Kann Defense 2 games 0W 0D 2L
Advance Variation 1 game 0W 0D 1L
Short Variation 1 game 0W 0D 1L
Classical Variation 1 game 0W 0D 1L
Main Line 1 game 0W 0D 1L
Nimzo-Larsen Attack 1 game 1W 0D 0L
Symmetrical Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Zukertort Opening 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Nimzo-Indian Defense 1 game 0W 0D 1L
Leningrad Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Blunders Top 4 of 135

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

2026.03.11 · 24... Rxc3 (−48.6% win chance) 1-0
Zak, Ondrej
Cech, Stanislav
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2026.08.24 · 15. Ne3 (−32.7% win chance) 0-1
Wallner, Juraj
Zak, Ondrej
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2026.03.12 · 15... Ng6 (−31.7% win chance) 0-1
Zak, Ondrej
Vodicka, Andreas
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? · 35. Rh6 (−30.8% win chance) 1-0
Pap, Martin
Zak, Ondrej
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View blunders & mistakes
Games Showing all 23 games
Date Event Round Color Opponent Result Accuracy % First moves