Sigurjonsson, Gudmundur

ISL ISL·Born 1947·FIDE #2300079·997 Games

Classical2463996 Games

Rapid—1 Games

Blitz—0 Games

Play against Sigurjonsson, Gudmundur's Twin

PRO

Uses their openings, level & style

Practice against a bot that uses their real openings and playing style

Ready to play

997 games analyzed

Statistics

Total

997

Wins

322

Draws

476

Losses

199

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

Opening

96.0%

Middlegame

92.9%

Endgame

94.4%

Clutch Factor — Move accuracy when winning vs. equal vs. losing — does their level drop when the game turns against them?

+5%

Winning (+2 or more)

94%2g

Equal position

95%14g

Losing (-2 or more)

89%16g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

31%

8 errors

19%

5 errors

19%

5 errors

12%

3 errors

12%

3 errors

2 errors

Critical Moment — When does the first serious error occur?

Move 30 average

100%

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?

Few

Many

Errors mapped

Hotspot zone

f3 / c4

Critical squares

4 err

2 err

1 err

f3/c4 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

White50.0%Loses

Sicilian: Rossolimo — 1.e4 c5 2.Nf3 Nc6 3.Bb5

8 Games · Low sample · last played 51 years agoPlay this line

No significant weaknesses detected as Black

Strengths

— avoid these lines

No consistent strengths detected as White

Black57.1%Wins

Nimzo-Indian: Rubinstein — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e314 Games · last played 50 years ago

Critical Blunders

4 errors · Stockfish

#30Qc7??Tacticsvs PortischOTB

#29Rb6??Tacticsvs LarsenOTB

#25Ng7??Tacticsvs GellerOTB

#22Rd1??Tacticsvs PortischOTB

Recent Games

997 Games

Baldursson, Haraldur(1971)

TCh-ISL Div 1 2014-15 · 21 Mar 2015

1-0

Ulfarsson, Magnus Orn(2377)

TCh-ISL Div 1 2014-15 · 21 Mar 2015

0-1

Arnalds, Stefan(1990)

TCh-ISL Div 1 2014-15 · 19 Mar 2015

0-1

Rist, Karl-Johan(1677)

Reykjavik Open 2015 · 18 Mar 2015

0-1

Opasiak, Dustin Tennessee(1781)

Reykjavik Open 2015 · 17 Mar 2015

0-1

Hojgaard, Brandur(1787)

Reykjavik Open 2015 · 16 Mar 2015

½-½

Endgame Statistics

PRO9 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

9 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

514 Games

37%47%16%

Move	Games	%
1.e4	422	60%
1.Nf3	57	63%
1.d4	29	64%
1.c4 Weak	4	0%
1.g3 Strong	1	100%
1.b4 Strong	1	100%

MoveGamesPerformance%

1.e4

422

60%

1.Nf3

63%

1.d4

64%

1.c4Weak

1.g3Strong

100%

1.b4Strong

100%