Scouting report: Ruud Janssen (GM, NED)

1,005 over-the-board games in the Chess Stalker database (1,005 classical): 44% wins, 31% draws, 25% losses. FIDE rating 2462 standard, 2455 blitz. 38 games analyzed with Stockfish: 92% accuracy, 0.16 blunders per game.

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

Full report: https://chessstalker.com/fide/1004816 — no account needed.

Ruud Janssen

GM

Netherlandsborn 1979FIDE ID 1004816

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2440
2480
2520
2505 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2462
2455
2536peak, Jan 2020
1,005games
443wins, 44%
310draws, 31%
252losses, 25%

Play style

before facing them
Elite accuracy: 92.4% average
Low resilience (30%): Doesn't save lost positions
Very consistent (91%)
Very precise: only 0.2 blunders/game
Dominates 1.d4 as ♔ (68% in 152 games)

Play against Janssen's Twin

Their real openings, level & style

Based on 1,005 games

Openings

1,005 games

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White
King's Indian1.d4 f6 2.c4 g626 games, last played 4 years ago76.9%wins
Reti vs King's Indian1.f3 f6 2.c4 g629 games, last played 17 years ago62.1%wins

Deep analysis

Stockfish · Classical · 38 analyzed
Accuracy by phase
Opening
96.0%
Middlegame
93.1%
Endgame
95.0%
Clutch factor
+6%
Winning (+2)
95%
Equal
94%
Losing (−2)
89%
Problematic pieces
26%
9 err
23%
8 err
17%
6 err
14%
5 err
11%
4 err
9%
3 err
Critical moment
Move 54 avg
0%
1-15
0%
16-25
50%
26-35
0%
36-45
50%
46+
50% of blunders occur after move 26-35. Keep tension until then.
Error heatmap · Critical squares
3
3
Few
Many
d5
3
d7
3
a5
2
c2
2
f4
2
d5/d7 concentrate most errors. Force decisions in those zones.

Critical blunders

9 errors
#77
d5?? vs Levin
Endgame · OTB · 2024
#34
a5?? vs Zwirs
Middlegame · OTB · 2024
#32
g6?? vs Braun
Middlegame · OTB · 2022
#82
f1?? vs Lai
Endgame · OTB · 2021
#31
xd5?? vs Kuipers
Middlegame · OTB · 2021
#13
d7?? vs Verstraeten
Middlegame · OTB · 2019

Recent games

Levin, Felix(2427)

TCh-BEL 2023-24 · 21 Apr 2024

1–0
Zwirs, Nico(2480)

TCh-BEL 2023-24 · 24 Mar 2024

0–1
Dgebuadze, Alexandre(2443)

TCh-BEL 2023-24 · 10 Mar 2024

½–½
Beukema, Jasper(2356)

TCh-BEL 2023-24 · 18 Feb 2024

½–½
Bezemer, Arno(2209)

TCh-BEL 2023-24 · 3 Dec 2023

1–0
Roebers, Eline(2369)

Dutch League 2021-22 · 21 May 2022

½–½

Endgame statistics

Repertoire

PRO
1,005 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
508 games52%W28%D20%L
Move
1. c4
1692y
51%27%22
65%
1. d4
1524y
54%28%18
68%
1. f3
1497y
52%31%17
68%
1. e4
3623y
47%25%28%
60%
1. g3
115y
100%
0%
1. c3
1
100%
100%

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