IM
Taher, Yoseph Theolifus
INA·Born 1999·FIDE #7105347·1,263 Games
INA Classical24511,167 Games
Rapid235231 Games
Blitz237565 Games
Statistics
1263
Total
702
Wins
236
Draws
324
Losses
56%19%26%
Play Style
What you need to know before facing them
Elite accuracy: 91.8% average
High resilience (63%): Dangerous even when losing
Solid conversion: 84%
Very consistent (86%)
Very precise: only 0.1 blunders/game
Dominates 1.d4 ♔ (76% in 223 games)
Vulnerable to 1.Nf3 ♔ (only 30%)
Deep Analysis
Stockfish 18 · Classical games · 336 analyzed
Accuracy by phase
Opening95.4%
Middlegame91.9%
Endgame94.0%
Clutch Factor
Performance under pressure
Winning (+2 or more)92%
176 Games
Equal position94%
110 Games
Losing (-2 or more)87%
75 Games
Problematic Pieces
Which pieces cause most errors?
♖
22%
125 errors
♕
19%
107 errors
♙
18%
106 errors
♗
14%
78 errors
♔
14%
79 errors
♞
14%
82 errors
Critical Moment
When does the first serious error occur?
Move 42average
1-15
16-25
26-35
36-45
46+
38% of blunders occur between move 46+. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
15
16
19
18
16
16
17
17
19
18
abcdefgh
Many
Few
Critical squares
d419 err
e619 err
f318 err
f618 err
e517 err
d4/e6 concentrate most errors. Force decisions in those zones.
Recent Games
W
Makovich, Andrey2217
2nd 3-0 Thu 9th Apr 2026 · 9 Apr 2026
W
Volkov, Nika2206
1st 3-0 Thu 9th Apr 2026 · 9 Apr 2026
L
Terry, Renato2508
1st 3-0 Thu 9th Apr 2026 · 9 Apr 2026
W
Pribelszky, Bence2371
2nd 3-0 Thu 9th Apr 2026 · 9 Apr 2026
W
Avramidou, Anastasia2310
2nd 3-0 Thu 9th Apr 2026 · 9 Apr 2026
W
Terlouw, Wouter2272
1st 3-0 Thu 9th Apr 2026 · 9 Apr 2026
Openings
Based on player games
Weaknesses
EXPLOIT!White
No significant weaknesses detected as White
Black
King's Indian
61.5%13 Games·Loses
1.d4 Nf6 2.c4 g6
Strengths
AVOIDWhite
Caro-Kann
84.6%13 Games·Wins
1.e4 c6 2.d4 d5
Sicilian: Closed
75.7%37 Games·Wins
1.e4 c5 2.Nc3 Nc6
Black
Sicilian: d6 Systems
46.2%13 Games·Wins
1.e4 c5 2.Nf3 d6
Critical Blunders
Tactical errors analyzed with Stockfish
10 errors
▶
#86Kf7??
Endgamevs Mekhitarian
OTB·2026
▶
#83Kc3??
Endgamevs Martinez Alcantara
OTB·2026
▶
#31Qd3??
Tacticsvs Xiong
OTB·2026
▶
#14gxh6??
Tacticsvs Martinez Alcantara
OTB·2026
▶
#84Kf3??
Endgamevs Mahdavi
OTB·2026
▶
#50Bf6??
Endgamevs Nakamura
OTB·2026
▶
#13Bxc5??
Tacticsvs Khodko
OTB·2026
▶
#48a5??
Endgamevs Hamidi
OTB·2026
▶
#64Kd6??
Endgamevs Le Tuan
OTB·2026
▶
#28Rac1??
Tacticsvs Fiorito
OTB·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
efgh626 Games
61%17%22%
1.e4
72%285
1.d4
76%223
1.c4
59%60
1.Nf3
30%30
1.g3
61%23
1.b3
33%3
1.f4
100%1
1.c3
0%1