Scouting report: Vignir Vatnar Stefansson (GM, ISL)

1,515 over-the-board games in the Chess Stalker database (1,446 classical, 35 rapid, 55 blitz): 46% wins, 30% draws, 24% losses. FIDE rating 2531 standard, 2459 rapid, 2608 blitz. 739 games analyzed with Stockfish: 94% accuracy, 0.04 blunders per game.

  • Opening repertoire of Vignir Vatnar Stefansson 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 Vignir Vatnar Stefansson's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/2308649 — no account needed.

Vignir Vatnar Stefansson

GM

ISLborn 2003FIDE ID 2308649

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2400
2500
2600
Peak2551
2484 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2608
2531
2459
2551peak, Mar 2025
1,515games
692wins, 46%
456draws, 30%
362losses, 24%

Play style

before facing them
Elite accuracy: 93.8% average
High resilience (56%): Dangerous even when losing
Solid conversion: 93%
Very consistent (91%)
Very precise: only 0.0 blunders/game
Dominates 1.c4 as ♔ (69% in 70 games)

Play against Stefansson's Twin

Their real openings, level & style

Based on 1,515 games

Openings

1,515 games

Weaknesses

where they slip as ♔ White
Queen's Indian1.d4 f6 2.c4 e6 3.f3 b615 games, last played last year60.0%losses

Strengths

what holds up for them as ♔ White
Sicilian: 2...c61.e4 c5 2.f3 c610 games, last played 2 months ago70.0%wins

Deep analysis

Stockfish 18 · Classical · 739 analyzed
Accuracy by phase
Opening
96.1%
Middlegame
93.5%
Endgame
95.3%
Clutch factor
+4%
Winning (+2)
94%
Equal
95%
Losing (−2)
90%
Problematic pieces
20%
74 err
20%
73 err
19%
70 err
16%
61 err
13%
48 err
13%
48 err
Critical moment
Move 47 avg
15%
1-15
8%
16-25
0%
26-35
31%
36-45
46%
46+
46% of blunders occur after move 46. Keep tension until then.
Error heatmap · Critical squares
15
17
Few
Many
e4
17
e6
15
e5
12
f4
12
d3
11
e4/e6 concentrate most errors. Force decisions in those zones.

Critical blunders

10 errors
#25
b4?? vs Samunenkov
Middlegame · Blitz · 2025
#46
c5?? vs Droin
Middlegame · Blitz · 2025
#34
g4?? vs Hong
Middlegame · Blitz · 2025
#44
e6?? vs Ahmad
Endgame · Blitz · 2025
#18
a4?? vs Stribuk
Middlegame · Blitz · 2025
#75
xf4?? vs Oro
Endgame · Blitz · 2025

Recent games

Pijpers, Arthur(2491)

15th Split Open 2026 · 14 Aug 2026

½–½
Nikcevic, Nebojsa(2316)

15th Split Open 2026 · 13 Aug 2026

½–½
Heimisson, Hilmir Freyr(2338)

15th Split Open 2026 · 12 Aug 2026

1–0
Plenkovic, Zdenko(2350)

15th Split Open 2026 · 11 Aug 2026

1–0
Tokhirjonova, Gulrukhbegim(2355)

15th Split Open 2026 · 9 Aug 2026

1–0
Baasansuren, Erdene(2406)

15th Split Open 2026 · 9 Aug 2026

½–½

Endgame statistics

Repertoire

PRO
1,515 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
753 games49%W30%D21%L
Move
1. d4
3993w
47%30%23
62%
1. e4
1354w
48%29%23
61%
1. f3
954w
46%37%17
65%
1. c4
705w
53%31%16
69%
1. c3
261y
62%1919
71%
1. b3
132y
69%23
81%
1. g3
74w
57%43%
79%
1. f4
41y
75%25%
88%
1. e3
24y
50%50%
75%
1. a3
14y
100%
100%
1. d3
116y
100%
100%

🍪 Cookies · Chess Stalker uses technical cookies (required for operation) and analytical cookies (to improve the service). Analytical cookies are optional.