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Player profile

Hyronymus Koelhuis

FIDE ID: 9121783 (view FIDE profile)
Games: 5 Wins: 1 (20%) Draws: 1 (20%) Losses: 3 (60%)
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Dossier

5 of 5 games analyzed.

Accuracy: 84.4%
Opened d4: 2/3Opened e4: 1/3
Castled kingside: 3Same-side castling: 3Castled queenside: 1Did not castle: 1
Played in the center: 2Played on the kingside: 1Fianchettoed kingside: 1Fianchettoed queenside: 1Played on the queenside: 1
Backward pawn: 3Kept the bishop pair: 2Initiated exchanges: 2Sacrificed material: 2Isolated pawn: 2Avoided exchanges: 2Missed tactics: 1Space advantage: 1Active pieces: 1
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Openings

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As White 3 games 1W 0D 2L
Scotch Game 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
London System 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Mikenas Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
As Black 2 games 0W 1D 1L
French Defense 1 game 0W 1D 0L
Exchange Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Modern Defense 1 game 0W 0D 1L
Standard Defense 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Blunders Top 4 of 22

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

2026.08.04 · 9. Na3 (−34% win chance) 0-1
Ayleanna Jermin
Hyronymus Koelhuis
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2026.08.01 · 42. a6 (−32.2% win chance) 1-0
Piter Dijkhuijsen
Hyronymus Koelhuis
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2026.08.04 · 31... a5 (−26.2% win chance) 1/2-1/2
Hyronymus Koelhuis
Jynx Van der Swaluw
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2026.08.01 · 38. Ra7 (−24.1% win chance) 1-0
Piter Dijkhuijsen
Hyronymus Koelhuis
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View blunders & mistakes
Games Showing all 5 games
Date Event Round Color Opponent Result Accuracy % First moves