IM
Kolosowski, Mateusz
POL·Born 1992·FIDE #1129708·777 Games
POL Classical2435711 Games
Rapid236427 Games
Blitz242939 Games
Statistics
777
Total
333
Wins
228
Draws
216
Losses
43%29%28%
Play Style
What you need to know before facing them
Elite accuracy: 92.3% average
Very consistent (89%)
Very precise: only 0.1 blunders/game
Dominates 1.e4 ♔ (63% in 236 games)
Vulnerable to 1.c4 ♚ (only 40%)
Deep Analysis
Stockfish 18 · Classical games · 65 analyzed
Accuracy by phase
Opening96.6%
Middlegame91.9%
Endgame94.2%
Clutch Factor
Performance under pressure
Winning (+2 or more)93%
33 Games
Equal position94%
18 Games
Losing (-2 or more)88%
14 Games
Problematic Pieces
Which pieces cause most errors?
♖
23%
18 errors
♕
20%
16 errors
♙
15%
12 errors
♗
14%
11 errors
♔
14%
11 errors
♞
14%
11 errors
Critical Moment
When does the first serious error occur?
Move 38average
1-15
16-25
26-35
36-45
46+
43% of blunders occur between move 36-45. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
2
3
3
3
7
3
5
3
4
2
abcdefgh
Many
Few
Critical squares
e47 err
d35 err
d24 err
d53 err
e53 err
e4/d3 concentrate most errors. Force decisions in those zones.
Recent Games
D
Sanal, Vahap2551
26th ch-EUR Indiv 2026 · 19 Apr 2026
W
David, Alexandru-Vasile2314
26th ch-EUR Indiv 2026 · 18 Apr 2026
D
Kucza, Karol2319
26th ch-EUR Indiv 2026 · 16 Apr 2026
D
Kejna, Piotr2311
26th ch-EUR Indiv 2026 · 15 Apr 2026
L
Warmerdam, Max2545
26th ch-EUR Indiv 2026 · 14 Apr 2026
W
Zawadzka, Jolanta2324
26th ch-EUR Indiv 2026 · 13 Apr 2026
Openings
Based on player games
Weaknesses
EXPLOIT!White
Queen's Gambit Declined
41.2%17 Games·Loses
1.d4 d5 2.c4 e6
Black
No significant weaknesses detected as Black
Strengths
AVOIDWhite
Sicilian: Closed
58.6%29 Games·Wins
1.e4 c5 2.Nc3 Nc6
Black
Italian: Two Knights
52.6%19 Games·Wins
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6
Queen's Gambit Declined
45.0%20 Games·Wins
1.d4 d5 2.c4 e6
Critical Blunders
Tactical errors analyzed with Stockfish
10 errors
▶
#38Kxe5??
Tactics
vs Onischuk
OTB·2025
▶
#67f3??
Endgame
vs Nerkar Anand
OTB·2025
▶
#46Bxd8??
Endgame
vs Nevednichy
Blitz·2021
▶
#72c5??
Endgame
vs Sankalp Gupta
Blitz·2021
▶
#30Kh8??
Tactics
vs Samunenkov
Blitz·2021
▶
#27Bxe3??
Tactics
vs Michalik
Blitz·2021
▶
#42Ke4??
Endgame
vs Mikhalevski
Blitz·2021
▶
#76Rd5??
Endgame
vs Heberla
Blitz·2021
▶
#56Rb5??
Endgame
vs Kantor
Rapid·2021
▶
#44Re6??
Endgame
vs Nevednichy
Rapid·2021
Endgame Statistics
21 endgame categories analyzed — discover where they collapse under pressure
Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO2026
2025
2021
2020
2019
2018
PRO
8
76
5
4
3
2
1a
b
c
d
efgh399 Games
48%26%26%
1.e4
63%236
1.d4
60%145
1.c4
50%6
1.Nf3
50%6
1.b3
38%4
1.Nc3
100%1
1.f4
50%1