Scouting report: Jonas Rosner (IM, GER)

566 over-the-board games in the Chess Stalker database (500 classical, 10 rapid, 56 blitz): 39% wins, 32% draws, 28% losses. FIDE rating 2451 standard, 2400 rapid, 2412 blitz. 132 games analyzed with Stockfish: 93% accuracy, 0.05 blunders per game.

  • Opening repertoire of Jonas Rosner 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 Jonas Rosner's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/24608513 — no account needed.

Chess Stalker

Jonas Rosner

IM

Germanyborn 1990FIDE ID 24608513

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2340
2380
2420
2460
2433 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2451
2412
2400
2478peak, Jun 2022
566games
220wins, 39%
183draws, 32%
161losses, 28%

Play style

before facing them
Elite accuracy: 93.3% average
Solid conversion: 81%
Very consistent (91%)
Very precise: only 0.1 blunders/game
Dominates 1.c4 as ♔ (72% in 29 games)

Play against Rosner's Twin

Their real openings, level & style

Based on 566 games

Openings

566 games

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White
Sicilian: Open1.e4 c5 2.♞f3 d6 3.d411 games, last played 2 years ago72.7%wins
French Defense1.e4 e6 2.d4 d518 games, last played 3 years ago61.1%wins

Deep analysis

Stockfish · Classical · 132 analyzed
Accuracy by phase
Opening
96.9%
Middlegame
93.4%
Endgame
95.4%
Clutch factor
+5%
Winning (+2)
95%
Equal
94%
Losing (−2)
90%
Problematic pieces
21%
25 err
21%
26 err
19%
23 err
17%
20 err
12%
14 err
11%
13 err
Critical moment
Move 44 avg
0%
1-15
14%
16-25
29%
26-35
29%
36-45
29%
46+
29% of blunders occur after move 26-35. Keep tension until then.
Error heatmap · Critical squares
6
5
5
5
5
Few
Many
d6
6
c3
5
d5
5
e1
5
e6
5
d6/c3 concentrate most errors. Force decisions in those zones.

Critical blunders

10 errors
#36
♚h8?? vs Gorshtein
Middlegame · OTB · 2025
#58
♛f5?? vs Vidit
Middlegame · OTB · 2025
#33
f3?? vs Levitan
Endgame · OTB · 2025
#19
♛c7?? vs Solodovnichenko
Middlegame · OTB · 2024
#44
♞d2+?? vs Chassard
Endgame · OTB · 2024
#28
♛b4?? vs Lye
Middlegame · OTB · 2024

Recent games

Pultinevicius, Paulius(2532)

40th ECC Open 2025 · 25 Oct 2025

0–1
Gorshtein, Ido(2537)

Round 6: Gorshtein, Ido -... · 24 Oct 2025

0–1
Zakin, Ilay(2308)

Round 5: Rosner, Jonas - ... · 23 Oct 2025

1–0
Sjodahl, Pontus(2431)

Round 4: Rosner, Jonas - ... · 22 Oct 2025

1–0
Vidit, Santosh Gujrathi(2716)

Round 3: Vidit, Santosh G... · 21 Oct 2025

½–½
Sylvan, Jacob(2303)

Round 2: Rosner, Jonas - ... · 20 Oct 2025

1–0

Endgame statistics

Repertoire

PRO
566 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
282 games43%W32%D25%L
Move
1. e4
17311m
44%36%20
62%
1. d4
651y
32%32%36%
49%
1. c4
3011m
62%2117
70%
1. ♞f3
1311m
54%1531%
62%
1. g3
114y
100%
0%

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