IM
Harvey, Marcus R
ENG·Born 1996·FIDE #400092·1,262 Games
ENG Classical24701,183 Games
Rapid245034 Games
Blitz244645 Games
Statistics
1262
Total
610
Wins
310
Draws
342
Losses
48%25%27%
Play Style
What you need to know before facing them
Elite accuracy: 93.7% average
High resilience (65%): Dangerous even when losing
Solid conversion: 90%
Very consistent (92%)
Very precise: only 0.1 blunders/game
Dominates 1.b3 ♔ (71% in 17 games)
Deep Analysis
Stockfish 18 · Classical games · 300 analyzed
Accuracy by phase
Opening95.6%
Middlegame93.9%
Endgame95.7%
Clutch Factor
Performance under pressure
Winning (+2 or more)94%
127 Games
Equal position95%
110 Games
Losing (-2 or more)90%
63 Games
Problematic Pieces
Which pieces cause most errors?
♙
25%
58 errors
♖
21%
48 errors
♔
15%
34 errors
♞
15%
34 errors
♗
12%
28 errors
♕
11%
26 errors
Critical Moment
When does the first serious error occur?
Move 50average
1-15
16-25
26-35
36-45
46+
64% of blunders occur between move 46+. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
8
9
7
9
7
6
8
13
6
7
abcdefgh
Many
Few
Critical squares
f313 err
a49 err
e59 err
d38 err
f68 err
f3/a4 concentrate most errors. Force decisions in those zones.
Recent Games
D
Chow, Samuel2351
4NCL 2025-26 · 4 May 2026
D
Roberson, Peter T2436
4NCL 2025-26 · 3 May 2026
W
Rogers, Jonathan W2336
4NCL 2025-26 · 2 May 2026
W
Rudd, Jack2248
4NCL Easter GM 2025 · 6 Apr 2026
W
Urkedal, Frode Olav Olsen2573
4NCL Easter GM 2026 · 5 Apr 2026
W
Gasanov,E2457
4NCL Easter GM 2026 · 4 Apr 2026
Openings
Based on player games
Weaknesses
EXPLOIT!White
No significant weaknesses detected as White
Black
No significant weaknesses detected as Black
Strengths
AVOIDWhite
English: Four Knights
61.5%13 Games·Wins
1.c4 e5 2.Nc3 Nf6
King's Indian
55.6%18 Games·Wins
1.d4 Nf6 2.c4 g6
Black
Catalan
61.5%13 Games·Wins
1.d4 Nf6 2.c4 e6 3.g3
Petroff Defense
56.3%16 Games·Wins
1.e4 e5 2.Nf3 Nf6
Critical Blunders
Tactical errors analyzed with Stockfish
10 errors
▶
#64Kd6??
Endgame
vs Ogunshola
OTB·2026
▶
#34Qb4??
Tactics
vs Wells
OTB·2025
▶
#34exf5??
Tactics
vs Bansal
OTB·2025
▶
#68h4??
Endgame
vs Adams
OTB·2025
▶
#36Ne6??
Tactics
vs Martinez Alcantara
OTB·2025
▶
#28Rd3??
Tactics
vs O`Gorman
OTB·2025
▶
#22Rb3??
Tactics
vs Mamedyarov
Rapid·2025
▶
#33Rg5??
Tactics
vs Derakhshani
Rapid·2025
▶
#15Bd1??
Tactics
vs Pichot
Rapid·2025
▶
#56Kf3??
Endgame
vs Aronian
Rapid·2025
Endgame Statistics
23 endgame categories analyzed — discover where they collapse under pressure
Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO2026
2025
2024
2023
2022
2021
PRO
8
76
5
4
3
2
1a
b
c
d
efgh637 Games
52%22%26%
1.Nf3
60%192
1.c4
66%147
1.d4
68%118
1.e4
61%89
1.g3
56%63
1.b3
71%17
1.f4
94%8
1.Nc3
100%2
1.a4
100%1