Scouting report: Semyon Lomasov (GM, ISR)

726 over-the-board games in the Chess Stalker database (663 classical, 63 rapid, 24 blitz): 41% wins, 37% draws, 22% losses. FIDE rating 2551 standard, 2550 rapid, 2485 blitz. 188 games analyzed with Stockfish: 94% accuracy, 0.06 blunders per game.

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

Full report: https://chessstalker.com/fide/24164879 — no account needed.

Semyon Lomasov

GM

ISRIsraelborn 2002FIDE ID 24164879

2551Classical
2550Rapid
2485Blitz

Statistics

726games
301 wins · 41%265 draws · 37%160 losses · 22%

Semyon Lomasov's playing style

before facing them
Elite accuracy: 93.6% average
Very consistent (90%)
Very precise: only 0.1 blunders/game
Dominates 1.d4 as ♔ (71% in 43 games)
Vulnerable to 1.c4 ♚ (only 38%)

Play against Lomasov's Twin

Their real openings, level & style

Based on 726 games

Deep Analysis

Stockfish 18 · Classical · 188 analyzed
Accuracy by phase
Opening
96.8%
Middlegame
93.3%
Endgame
95.2%
Clutch Factor
+6%
Winning (+2)
95%
Equal
95%
Losing (−2)
89%
Problematic Pieces
25%
37 err
21%
31 err
16%
23 err
15%
22 err
14%
20 err
10%
15 err
Critical Moment
Move 40 avg
0%
1-15
8%
16-25
50%
26-35
8%
36-45
33%
46+
50% of blunders occur after move 26-35. Keep tension until then.
Error Heatmap
5
5
6
6
6
Few
Many
b1
6 err
d3
6 err
e3
6 err
c4
5 err
g5
5 err
b1/d3 concentrate most errors. Force decisions in those zones.

Openings of Semyon Lomasov

726 games

Weaknesses

· exploit these

No significant weaknesses detected as white

No significant weaknesses detected as black

Strengths

· avoid these
aswhite64.3%wins
French: Classical · 1.e4 e6 2.d4 d5 3.Nc3 Nf614 g
aswhite61.3%wins
Sicilian: e6 Systems · 1.e4 c5 2.Nf3 e631 g
asblack45.5%wins
French: Classical · 1.e4 e6 2.d4 d5 3.Nc3 Nf622 g

How to beat Semyon Lomasov: weaknesses & blunders

10 errors
Rb5??vs SvaneBlitz · 2024
Rf1+??vs AravindhBlitz · 2024
Nxe3??vs BokBlitz · 2024
Rf8??vs VokhidovBlitz · 2024
Nd2??vs RisteskiBlitz · 2024
Rb3??vs MadaminovRapid · 2024
Kf5??vs BortnykBlitz · 2024
g5??vs DubovBlitz · 2024
Nb4??vs LodiciRapid · 2024
Re7??vs MamedyarovBlitz · 2024

Recent games of Semyon Lomasov

Ai, Evan(2170)

Cornerstone New Year's Cl... · 2 Jan 2026

0-1L
Macovei, Andrei(2481)

2025 Pan-Am Collegiate Ch... · 5 Jan 2025

½-½D
De Silva, L M S T(2370)

2025 Pan-Am Collegiate Ch... · 4 Jan 2025

½-½D
Liang, Awonder(2687)

2025 Pan-Am Collegiate Ch... · 4 Jan 2025

0-1W
Singh, Hersh(2169)

2025 Pan-Am Collegiate Ch... · 3 Jan 2025

½-½D
Lin, Dachey(2303)

2025 Pan-Am Collegiate Ch... · 3 Jan 2025

1-0W

Semyon Lomasov's endgames

Repertoire

PROTime controls · Years · Events
726 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Move arrowsmost-played moves
SF18
369 games
49%34%17%
MovegamesLastPerf%
1.e4
319Jan 2026
66%
1.d4Strong
43Sept 2021
71%
1.Nf3
5Nov 2019
40%
1.b3Strong
1Jan 2015
100%
1.c4
1Jun 2019
50%

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