Scouting report: Jean-Rene Koch (IM, FRA)

791 over-the-board games in the Chess Stalker database (791 classical): 36% wins, 38% draws, 26% losses. FIDE rating 2433 standard, 2434 rapid. 26 games analyzed with Stockfish: 93% accuracy, 0.08 blunders per game.

  • Opening repertoire of Jean-Rene Koch as White and Black, with results per line — free.
  • Weaknesses and blunder patterns, evaluated with Stockfish — free.
  • Recent over-the-board games and endgame statistics.
  • Twin Bot: a sparring bot that imitates Jean-Rene Koch's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/600148 — no account needed.

Jean-Rene Koch

IM

Franceborn 1970FIDE ID 600148

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2400
2440
2432 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2434
2433
2518peak, Jul 2001
791games
287wins, 36%
297draws, 38%
207losses, 26%

Play style

before facing them
Elite accuracy: 93.5% average
Plays 2.5% better with black
Very consistent (92%)
Very precise: only 0.1 blunders/game
Dominates 1.d4 as ♔ (66% in 28 games)
Vulnerable to 1.d4 ♚ (only 46%)

Play against Koch's Twin

Their real openings, level & style

Based on 791 games

Openings

791 games

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White
Alekhine Defense1.e4 ♞f6 2.e5 ♞d511 games90.9%wins
Sicilian: Taimanov1.e4 c5 2.♞f3 e6 3.d4 cxd4 4.♞xd4 ♞c610 games, last played 12 years ago60.0%wins

Deep analysis

Stockfish · Classical · 26 analyzed
Accuracy by phase
Opening
95.7%
Middlegame
93.9%
Endgame
94.3%
Clutch factor
+3%
Winning (+2)
94%
Equal
95%
Losing (−2)
91%
Problematic pieces
29%
8 err
25%
7 err
21%
6 err
14%
4 err
7%
2 err
4%
1 err
Critical moment
Move 35 avg
0%
1-15
0%
16-25
50%
26-35
50%
36-45
0%
46+
50% of blunders occur after move 26-35. Keep tension until then.
Error heatmap · Critical squares
3
Few
Many
c3
3
b1
2
c4
2
d7
2
g6
2
c3/b1 concentrate most errors. Force decisions in those zones.

Critical blunders

some recent costly mistakes
Loiseau, Quentin(2442)

Move 35 · Middlegame · OTB · 2022

−2.5g6??
Geenen, Marc(2246)

Move 27 · Middlegame · OTB · 2019

−4.4g1??
Kasparov, Garry(2750)

Move 50 · OTB

−3.7d6d3??

Recent games

Eugene, Floryan(2373)

French Team Championship Top 16 ... · 19 Jun 2022

0–1
Roubert, Emile(2027)

French Team Championship Top 16 ... · 18 Jun 2022

1–0
Rouler, Charly(2346)

French Team Championship Top 16 ... · 17 Jun 2022

1–0
Maurizzi,Marc Andria(2490)

French Team Championship Top 16 ... · 15 Jun 2022

½–½
Flom, Gabriel(2428)

French Team Championship Top 16 ... · 14 Jun 2022

1–0
Mendeiros, Jerome(2097)

French Team Championship Top 16 ... · 13 Jun 2022

1–0

Endgame statistics

Repertoire

PRO
791 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
412 games40%W36%D24%L
Move
1. e4
33811y
39%36%25%
57%
1. c4
434y
33%42%25%
54%
1. d4
28Feb 1998
57%1825%
66%
1. ♞f3
214y
50%50%
75%
1. g3
1Jan 1993
100%
50%

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