Scouting report: Sipke Ernst (GM, NED)

2,334 over-the-board games in the Chess Stalker database (2,094 classical, 24 rapid, 216 blitz): 46% wins, 32% draws, 21% losses. FIDE rating 2547 standard, 2514 rapid, 2436 blitz. 367 games analyzed with Stockfish: 93% accuracy, 0.08 blunders per game.

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

Full report: https://chessstalker.com/fide/1004689 — no account needed.

Sipke Ernst

TitleGrandmasterFederationNetherlandsBorn1979FIDE ID1004689

Classical2547▼ 6
Rapid2514
Blitz2436
Games2,334
W · D · L46 / 32 / 21
Peak2606

Rating history

2420
2460
2500
2540
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Oct 2023Nov 2026
Classical2547Rapid2514Blitz2436no games played
Accuracy by phase
96.3%Opening93.6%Middlegame95.2%Endgame
Clutch factor
Insufficient data

Play style

Elite accuracy: 93.2% average
Solid conversion: 89%
Very consistent (88%)
Very precise: only 0.1 blunders/game
Dominates 1.Nf3 as ♔ (73% in 263 games)

Recent games

Ondersteijn, Niels(2367)

Dutch League 2026-27 · 3 Oct 2026

0–1
Vrolijk, Liam(2506)

Dutch League 2026-27 · 19 Sept 2026

1–0
Brzezina, Piotr(2398)

27th Olomouc A GM 2026 · 23 Aug 2026

1–0
Simacek, Pavel(2372)

27th Olomouc A GM 2026 · 22 Aug 2026

½–½
Efroimski, Marsel(2360)

27th Olomouc A GM 2026 · 21 Aug 2026

1–0

Play against Ernst's Twin

Their real openings, level & style

Based on 2,334 games

Openings

1,170 games as White · scores 67.8%

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White
Reti: Gambit1.♞f3 d5 2.c4 e617 games, last played 4 months ago70.6%wins
Queen's Gambit Accepted1.d4 d5 2.c4 dxc424 games, last played 2 years ago66.7%wins

By family

open a family to see its lines
PRO
2,334 games in scope
LineGamesScorevs 67.8%
28972.7%+4.8 pts
11573.5%+5.7 pts
11266.5%—
10763.1%−4.7 pts
10565.7%—
6662.1%−5.7 pts
6270.2%—
5966.1%—

Mistakes

Problematic pieces
Insufficient data
Critical moment
Insufficient data
Error heatmap · Critical squares
Insufficient data

Critical blunders

Tactical errors analyzed with Stockfish

Couldn't load this.

Endgame statistics

Repertoire

PRO
2,334 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
1,170 games53%W29%D18%L
Move
1. d4
7732m
52%30%18
67%
1. ♞f3
2632m
59%27%14
73%
1. c4
591y
53%27%20
66%
1. e4
492y
43%29%28%
57%
1. g3
146y
50%43%
71%
1. e3
523y
60%40%
80%
1. b3
59y
40%40%20
60%
1. ♞c3
29y
100%
100%

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