GM

Matviishen, Viktor

UKR UKR·Born 2002·FIDE #14129850·1,192 Games

Classical2537968 Games
Rapid2422157 Games
Blitz246193 Games

Statistics

1192

Total

549

Wins

365

Draws

278

Losses

46%31%23%

Play Style

What you need to know before facing them

Elite accuracy: 94.3% average
Solid conversion: 86%
Very consistent (92%)
Very precise: only 0.1 blunders/game
Dominates 1.e4 ♔ (66% in 122 games)
Vulnerable to 1.Nf3 ♔ (only 39%)

Deep Analysis

Stockfish 18 · Classical games · 398 analyzed

Accuracy by phase
Opening96.9%
Middlegame94.0%
Endgame95.2%

Clutch Factor

Performance under pressure

+5%
Winning (+2 or more)95%
186 Games
Equal position95%
144 Games
Losing (-2 or more)90%
68 Games

Problematic Pieces

Which pieces cause most errors?

♖
29%
80 errors
♙
19%
52 errors
♕
17%
47 errors
♞
13%
36 errors
♗
11%
30 errors
♔
11%
30 errors

Critical Moment

When does the first serious error occur?

Move 48average
1-15
16-25
26-35
36-45
46+
53% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8
12
8
11
9
12
8
10
8
9
abcdefgh
Many
Few
Critical squares
d412 err
d712 err
c511 err
c310 err
e59 err
d4/d7 concentrate most errors. Force decisions in those zones.

Recent Games

W
Atwell, Rose2290

Charlotte Spring GMA 2026 · 22 Mar 2026

0-1
D
Lu, Maximillian2411

Charlotte Spring GMA 2026 · 22 Mar 2026

½-½
W
Zhu, Linxi2308

Charlotte Spring GMA 2026 · 21 Mar 2026

0-1
W
Preotu, Razvan2497

2026 Charlotte Spring Nor... · 21 Mar 2026

1-0
W
Jing, Andrew2342

Round 5: Jing, Andrew - M... · 20 Mar 2026

0-1
W
Guo, Ethan2364

Round 4: Matviishen, Vikt... · 20 Mar 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!
White
King's Indian: Classical
52.9%
17 Games·Loses

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2

Black

No significant weaknesses detected as Black

Strengths

AVOID
White
Queen's Gambit Declined
61.1%
54 Games·Wins

1.d4 d5 2.c4 e6

Sicilian: d6 Systems
58.3%
24 Games·Wins

1.e4 c5 2.Nf3 d6

Black
Scotch Game
73.3%
15 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.d4

Caro-Kann
56.3%
16 Games·Wins

1.e4 c6 2.d4 d5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors
▶
#50Rb5??
Endgame
vs Ruiz Castillo
OTB·2025
▶
#35g4??
Tactics
vs Zhu
OTB·2025
▶
#70Re8??
Endgame
vs Budisavljevic
OTB·2025
▶
#30Rh2??
Tactics
vs Kostolansky
OTB·2025
▶
#17Qa3??
Tactics
vs Bondade
OTB·2025
▶
#7Qd3??
Tactics
vs Bilych
OTB·2025
▶
#60Rg2+??
Endgame
vs Pribadi
OTB·2025
▶
#54Kh2??
Endgame
vs Zisiadis
OTB·2025
▶
#39Rxc3??
Tactics
vs Liem
OTB·2025
▶
#44Kf1??
Endgame
vs Kevlishvili
OTB·2025
Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO
·
2026
2025
2024
2023
2022
2021
PRO
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Starting Position
613 Games
50%29%21%
1.d4
65%
467
1.e4
66%
122
1.Nf3
39%
14
1.c4
45%
10
chessstalkerv3.5

Know your enemy. Win more games.

Resources

Trust & Privacy

🍪No tracking cookies
🔒SSL encrypted
📊Self-hosted analytics

© 2025-2026 Chess Stalker. Not affiliated with Lichess.org or Chess.com

Made with ♟ for chess players

🍪 Cookies · Chess Stalker uses technical cookies (required for operation) and analytical cookies (to improve the service). Analytical cookies are optional.