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Koch, Ralf-Johannes

Standard: 1792 Rapid: 0 Blitz: 0 (last updated 2026-10-02)
FIDE ID: 24670219 (view FIDE profile)
Federation: GER Sex: M Birth Year: 1960 Age: 66
Title: — Women's title: — Other title: — FOA title: —
Games: 5 Wins: 0 (0%) Draws: 2 (40%) Losses: 3 (60%)
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Dossier

5 of 5 games analyzed.

Accuracy: 86.7%
Opened e4: 2/2
Castled kingside: 4Same-side castling: 3Opposite-side castling: 1Castled queenside: 1
Fianchettoed kingside: 5Played on the kingside: 2Played in the center: 1Fianchettoed queenside: 1Played on the queenside: 1
Backward pawn: 4Kept the bishop pair: 3Space advantage: 3Avoided exchanges: 2Missed tactics: 2Active pieces: 2Sacrificed material: 2Initiated exchanges: 2Isolated pawn: 1
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Openings

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As White 2 games 0W 0D 2L
French Defense 2 games 0W 0D 2L
King's Indian Attack 2 games 0W 0D 2L
(unspecified) 2 games 0W 0D 2L
As Black 3 games 0W 2D 1L
Modern Defense 2 games 0W 1D 1L
(unspecified) 2 games 0W 1D 1L
(unspecified) 2 games 0W 1D 1L
Queen's Pawn Game 1 game 0W 1D 0L
Modern Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Blunders Top 4 of 23

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

2025.10.04 · 38. Qxd5 (−29% win chance) 0-1
Ulrich, Andreas
Koch, Ralf-Johannes
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2025.10.03 · 28... Kc7 (−24.9% win chance) 1/2-1/2
Koch, Ralf-Johannes
Wander, Dennis
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2025.10.04 · 37. c4 (−24.6% win chance) 0-1
Ulrich, Andreas
Koch, Ralf-Johannes
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2025.10.03 · 14. c3 (−20.2% win chance) 0-1
Woll, Wilfried
Koch, Ralf-Johannes
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Games Showing all 5 games
Date Event Round Color Opponent Result Accuracy % First moves