IM
Baum, Jonasz
POL·Born 2004·FIDE #1195360·1,204 Games
POL Classical24471,090 Games
Rapid237550 Games
Blitz238864 Games
Statistics
1204
Total
510
Wins
330
Draws
361
Losses
42%27%30%
Play Style
What you need to know before facing them
Elite accuracy: 93.0% average
Solid conversion: 86%
Very consistent (89%)
Very precise: only 0.1 blunders/game
Dominates 1.d4 ♔ (62% in 333 games)
Vulnerable to 1.c4 ♚ (only 42%)
Deep Analysis
Stockfish 18 · Classical games · 558 analyzed
Accuracy by phase
Opening96.6%
Middlegame92.9%
Endgame95.2%
Clutch Factor
Performance under pressure
Winning (+2 or more)94%
217 Games
Equal position94%
168 Games
Losing (-2 or more)89%
115 Games
Problematic Pieces
Which pieces cause most errors?
♖
23%
111 errors
♕
19%
93 errors
♞
18%
88 errors
♙
18%
88 errors
♗
14%
67 errors
♔
9%
42 errors
Critical Moment
When does the first serious error occur?
Move 44average
1-15
16-25
26-35
36-45
46+
31% of blunders occur between move 26-35. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
18
18
15
15
12
16
14
21
13
12
abcdefgh
Many
Few
Critical squares
f321 err
d618 err
d718 err
g516 err
c515 err
f3/d6 concentrate most errors. Force decisions in those zones.
Recent Games
L
Pacan-Milej, Kosma2231
AMP-TEAM · 7 Mar 2026
W
Koziorowicz, Michal2264
AMP-TEAM · 7 Mar 2026
D
Nowak, Mikolaj2290
AMP-TEAM · 7 Mar 2026
W
Walaszczyk, Aleksander1991
AMP- Team · 7 Mar 2026
W
Gbiorczyk, Mikolaj2134
AMP-M · 6 Mar 2026
W
Kubik, Rafal2129
AMP- M · 6 Mar 2026
Openings
Based on player games
Weaknesses
EXPLOIT!White
Sicilian: e6 Systems
43.8%16 Games·Loses
1.e4 c5 2.Nf3 e6
Grünfeld
44.4%9 GamesLow sample·Loses
1.d4 Nf6 2.c4 g6 3.Nc3 d5
Black
Reti: Gambit
100.0%8 GamesLow sample·Loses
1.Nf3 d5 2.c4 e6
Sicilian: Rossolimo
65.0%20 Games·Loses
1.e4 c5 2.Nf3 Nc6 3.Bb5
Strengths
AVOIDWhite
Slav: Semi-Slav
64.7%17 Games·Wins
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3
Sicilian: Open
59.4%32 Games·Wins
1.e4 c5 2.Nf3 d6 3.d4
Black
Sicilian: Sveshnikov
62.5%16 Games·Wins
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5
Reti: KIA
50.0%12 Games·Wins
1.Nf3 d5 2.g3 g6
Critical Blunders
Tactical errors analyzed with Stockfish
10 errors
▶
#23Nd5??
Tacticsvs Kulig
OTB·2025
▶
#21Rd7??
Tacticsvs Kokoszczynski
OTB·2025
▶
#35Bxd3??
Tacticsvs Grygierczyk
OTB·2025
▶
#27Ba3??
Tacticsvs Czernek
Rapid·2025
▶
#19Ng4??
Tacticsvs Odeev
OTB·2025
▶
#88Rh2??
Endgamevs Maghalashvili
OTB·2025
▶
#38axb2??
Tacticsvs Levi
OTB·2025
▶
#25Qb3??
Tacticsvs Kosakowski
OTB·2025
▶
#36Kh1??
Tacticsvs Klimkowski
OTB·2025
▶
#45Nf5??
Endgamevs Heberla
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
efgh608 Games
45%26%29%
1.d4
62%335
1.e4
55%205
1.c4
55%33
1.Nf3
60%30
1.g3
13%4
1.Nc3
0%1