S
IM

Semkov, Semko

BUL BUL·Born 1960·FIDE #2900068·492 Games

Classical2450492 Games
Rapid0 Games
Blitz0 Games

Play against Semkov, Semko's Twin

PRO

Uses their openings, level & style

Statistics

Total

492

Wins

204

Draws

147

Losses

141
41%30%29%

Play Style

What you need to know before facing them
Very high accuracy: 88.1% average
Plays 10.3% better with white
Very precise: only 0.2 blunders/game
Dominates 1.d4 ♔ (63% in 241 games)
Vulnerable to 1.Nf3 ♚ (only 33%)

Deep Analysis

Stockfish 18 · Classical games · 6 analyzed
Accuracy by phase
Opening
96.2%
Middlegame
91.7%
Endgame
90.8%
Clutch Factor — Move accuracy when winning vs. equal vs. losing — does their level drop when the game turns against them?
+12%
Winning (+2 or more)
96%2g
Equal position
97%1g
Losing (-2 or more)
83%3g
Performance under pressure
Problematic Pieces — Which pieces cause most errors?
28%
5 errors
28%
5 errors
17%
3 errors
11%
2 errors
11%
2 errors
6%
1 errors
Critical Moment — When does the first serious error occur?
Move 36 average
0%
0%
50%
50%
0%
1-15
16-25
26-35
36-45
46+
50% of blunders occur between move 26-35. Keep tension until that moment.
Error Heatmap — Where do most errors occur?
2
Few
Many
Critical squares
c6
2 err
c3
1 err
c7
1 err
d5
1 err
e1
1 err
c6/c3 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

No significant weaknesses detected as White

Black52.9%Loses
Sicilian: 2...Nc6 — 1.e4 c5 2.Nf3 Nc6
17 Games · last played 39 years agoPlay this line

Strengths

— avoid these lines
White61.1%Wins
Nimzo-Indian: Huebner — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c518 Games · last played 38 years ago

No consistent strengths detected as Black

Critical Blunders

2 errors · Stockfish
g5h6??vs TalOTB
b4??vs TopalovOTB

Recent Games

W
Stavrev, Nikolaj(2313)

? · 14 Dec 2003

0-1
W
Asparuhov, Parvan(2136)

? · 14 Dec 2003

1-0
L
Stoinev, Metodi(2331)

? · 13 Dec 2003

0-1
W
Kukov, Andrej(2048)

? · 13 Dec 2003

0-1
D
Kirov, Dimitar(1935)

? · 13 Dec 2003

½-½
D
Tsvetkov, Ilia(2307)

? · 12 Dec 2003

½-½

Endgame Statistics

PRO5 endgame categories analyzed
Endgame Statistics
Reveal weaknesses →
Repertoire
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Move arrowsmost-played moves
Stockfish
256 Games
47%30%23%
MoveGamesPerformance%
1.d4
241
63%
1.e4
11
36%
1.Nf3
4
50%

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