GM
Sigurjonsson, Gudmundur
ISL·Born 1947·FIDE #2300079·997 Games
ISL Classical2463996 Games
Rapid—1 Games
Blitz—0 Games
Statistics
997
Total
322
Wins
476
Draws
199
Losses
32%48%20%
Play Style
What you need to know before facing them
Elite accuracy: 91.7% average
Low resilience (20%): Doesn't save lost positions
Very consistent (90%)
Very precise: only 0.0 blunders/game
Dominates 1.d4 ♔ (64% in 29 games)
Vulnerable to 1.c4 ♚ (only 40%)
Deep Analysis
Stockfish 18 · Classical games · 32 analyzed
Accuracy by phase
Opening96.0%
Middlegame92.9%
Endgame94.4%
Clutch Factor
Performance under pressure
Winning (+2 or more)94%
2 Games
Equal position95%
14 Games
Losing (-2 or more)89%
16 Games
Problematic Pieces
Which pieces cause most errors?
♕
31%
8 errors
♔
19%
5 errors
♖
19%
5 errors
♗
12%
3 errors
♙
12%
3 errors
♞
8%
2 errors
Critical Moment
When does the first serious error occur?
Move 30average
1-15
16-25
26-35
36-45
46+
100% of blunders occur between move 26-35. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
1
2
1
1
2
2
1
4
1
1
abcdefgh
Many
Few
Critical squares
f34 err
c42 err
c52 err
c72 err
b51 err
f3/c4 concentrate most errors. Force decisions in those zones.
Recent Games
L
Baldursson, Haraldur1971
TCh-ISL Div 1 2014-15 · 21 Mar 2015
L
Ulfarsson, Magnus Orn2377
TCh-ISL Div 1 2014-15 · 21 Mar 2015
W
Arnalds, Stefan1990
TCh-ISL Div 1 2014-15 · 19 Mar 2015
W
Rist, Karl-Johan1677
Reykjavik Open 2015 · 18 Mar 2015
L
Opasiak, Dustin Tennessee1781
Reykjavik Open 2015 · 17 Mar 2015
D
Hojgaard, Brandur1787
Reykjavik Open 2015 · 16 Mar 2015
Openings
Based on player games
Weaknesses
EXPLOIT!White
Sicilian: Rossolimo
50.0%8 GamesLow sample·Loses
1.e4 c5 2.Nf3 Nc6 3.Bb5
Black
No significant weaknesses detected as Black
Strengths
AVOIDWhite
No consistent strengths detected as White
Black
Nimzo-Indian: Rubinstein
57.1%14 Games·Wins
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3
Critical Blunders
Tactical errors analyzed with Stockfish
4 errors
▶
#30Qc7??
Tacticsvs Portisch
OTB
▶
#29Rb6??
Tacticsvs Larsen
OTB
▶
#25Ng7??
Tacticsvs Geller
OTB
▶
#22Rd1??
Tacticsvs Portisch
OTB
Endgame Statistics
9 endgame categories analyzed — discover where they collapse under pressure
Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO2015
2014
2003
1999
1986
1985
PRO
8
76
5
4
3
2
1a
b
c
d
efgh514 Games
37%47%16%
1.e4
60%422
1.Nf3
63%57
1.d4
64%29
1.c4
0%4
1.g3
100%1
1.b4
100%1