Scouting report: Dimitrios Mastrovasilis (GM, GRE)

2,119 over-the-board games in the Chess Stalker database (1,913 classical, 125 rapid, 102 blitz): 43% wins, 41% draws, 16% losses. FIDE rating 2525 standard, 2520 rapid, 2533 blitz. 383 games analyzed with Stockfish: 95% accuracy, 0.03 blunders per game.

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

Full report: https://chessstalker.com/fide/4202694 — no account needed.

Dimitrios Mastrovasilis

GM

Greeceborn 1983FIDE ID 4202694

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2480
2520
2560
2600
2589 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2533
2525
2520
2631peak, Jan 2012
2,119games
904wins, 43%
877draws, 41%
337losses, 16%

Play style

before facing them
Elite accuracy: 95.0% average
High resilience (56%): Dangerous even when losing
Very consistent (93%)
Very precise: only 0.0 blunders/game
Dominates 1.e4 as ♔ (67% in 1003 games)

Play against Mastrovasilis's Twin

Their real openings, level & style

Based on 2,119 games

Openings

2,119 games

Weaknesses

where they slip as ♔ White
Sicilian: Closed1.e4 c5 2.♞c3 ♞c611 games, last played last year63.6%losses

Strengths

what holds up for them as ♔ White
Sicilian: Sveshnikov1.e4 c5 2.♞f3 ♞c6 3.d4 cxd4 4.♞xd4 e515 games, last played last year73.3%wins
Caro-Kann: Advance1.e4 c6 2.d4 d5 3.e544 games, last played last year65.9%wins

Deep analysis

Stockfish · Classical · 383 analyzed
Accuracy by phase
Opening
96.9%
Middlegame
94.3%
Endgame
96.0%
Clutch factor
+4%
Winning (+2)
95%
Equal
96%
Losing (−2)
91%
Problematic pieces
24%
47 err
19%
38 err
18%
35 err
14%
27 err
13%
25 err
13%
25 err
Critical moment
Move 35 avg
0%
1-15
33%
16-25
17%
26-35
25%
36-45
25%
46+
33% of blunders occur after move 16-25. Keep tension until then.
Error heatmap · Critical squares
9
Few
Many
d6
9
c2
7
d3
7
b4
6
b5
6
d6/c2 concentrate most errors. Force decisions in those zones.

Critical blunders

some recent costly mistakes
Zafeiriou, Maximos(1654)

Move 13 · Middlegame · Rapid · 2025

−2.3f8??
Giri, Anish(2759)

Move 40 · Middlegame · OTB · 2025

−3.4c2??
Meers, Hubert(2210)

Move 52 · Endgame · OTB · 2025

−4.0d7??
Fier, Alexandr(2534)

Move 68 · Endgame · OTB · 2025

−3.0g2??
Goraj, Barbara(2178)

Move 36 · Endgame · Blitz · 2024

−6.8c4+??
Krallis, Christos(2383)

Move 13 · Middlegame · Blitz · 2024

−2.9O-O??
Oliinyk, Serafym(2207)

Move 60 · Endgame · Blitz · 2024

−5.2g2??
Narva, Mai(2413)

Move 33 · Endgame · Blitz · 2024

−4.5g7??
Lauda, Alexandr(2255)

Move 12 · Opening · Blitz · 2024

−2.6f4??
Vyval, Volodymyr(2269)

Move 15 · Middlegame · Blitz · 2024

−2.71d2??

Recent games

Heimisson, Hilmir Freyr(2342)

46th Olympiad 2026 · 20 Sept 2026

1–0
Van Foreest, Jorden(2706)

46th Olympiad 2026 · 19 Sept 2026

1–0
Banh Gia Huy(2464)

46th Olympiad 2026 · 18 Sept 2026

1–0
Wafa, Hamed(2358)

46th Olympiad 2026 · 17 Sept 2026

½–½
Mwale, Joseph(2287)

46th Olympiad 2026 · 16 Sept 2026

0–1
Georgiev, Biser(2190)

Sofia Cup Blitz 2026 · 30 Aug 2026

1–0

Endgame statistics

Repertoire

PRO
2,119 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
1,053 games48%W39%D13%L
Move
1. e4
10031w
48%39%13
67%
1. ♞f3
275m
59%41%
80%
1. c4
101y
60%40%
80%
1. d4
910m
33%67%
67%
1. a3
1—
100%
100%
1. b3
1Apr 1998
100%
100%
1. f4
124y
100%
50%
1. g3
11y
100%
100%

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