Ostmoe, Geir Sune Tallaksen

NOR NOR·Born 1985·FIDE #1502778·543 Games

Classical2488543 Games

Rapid24630 Games

Blitz23840 Games

Statistics

543

Total

208

Wins

206

Draws

129

Losses

38%38%24%

Play Style

What you need to know before facing them

Elite accuracy: 93.6% average

High resilience (59%): Dangerous even when losing

Solid conversion: 97%

Very consistent (92%)

Very precise: only 0.0 blunders/game

Dominates 1.e4 ♔ (75% in 16 games)

Vulnerable to 1.c4 ♚ (only 40%)

Deep Analysis

Stockfish 18 · Classical games · 63 analyzed

Accuracy by phase

Opening96.8%

Middlegame93.5%

Endgame96.0%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)95%

31 Games

Equal position94%

19 Games

Losing (-2 or more)90%

13 Games

Problematic Pieces

Which pieces cause most errors?

♙

28%

15 errors

♖

26%

14 errors

♞

17%

9 errors

♗

11%

6 errors

♕

11%

6 errors

♔

4 errors

Critical Moment

When does the first serious error occur?

Move 30average

1-15

16-25

26-35

36-45

46+

Error Heatmap

Where do most errors occur?

abcdefgh

Many

Few

Critical squares

f14 err

a73 err

c63 err

a22 err

d22 err

f1/a7 concentrate most errors. Force decisions in those zones.

Recent Games

Urkedal, Frode Olav Olsen2578

TCh-NOR Elite 2025-26 · 8 Mar 2026

½-½

Kreken, Eivind Grunt2351

Eliteserien 2025-26 · 7 Mar 2026

½-½

Bern, Ivar2286

Norwegian Team League 25-... · 7 Mar 2026

½-½

Kreken, Eivind Grunt2347

TCh-NOR Elite 2025-26 · 6 Mar 2026

½-½

Kaasen, Tor Fredrik2476

TCh-NOR Elite 2025-26 · 8 Feb 2026

½-½

Tarlev, Konstantin2538

Eliteserien 2025-26 · 7 Feb 2026

½-½

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

King's Indian: Main Line

62.5%

16 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O

King's Indian: Classical

62.5%

16 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5

Black

Italian: Two Knights

50.0%

18 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6

Critical Blunders

Tactical errors analyzed with Stockfish

3 errors

▶

#56Nc6??

Endgame

vs Elsness

OTB·2022

▶

#47Rh7??

Endgame

vs Amar

OTB·2020

▶

#49Rc4??

Endgame

vs Stojanovic

OTB·2019

Endgame Statistics

19 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

2026

2025

2024

2022

2021

2020

PRO

Starting Position

269 Games

42%37%21%

Move	Games	%
1.d4	237	59%
1.e4 Strong	16	75%
1.Nf3	15	70%
1.c4 Weak	1	0%

1.d4

59%

237

1.e4

75%

1.Nf3

70%

1.c4

Ostmoe, Geir Sune Tallaksen

Play against Ostmoe, Geir Sune Tallaksen's Twin

Statistics

Play Style

Deep Analysis

Clutch Factor

Problematic Pieces

Critical Moment

Error Heatmap

Recent Games

Openings

Weaknesses

Strengths

King's Indian: Main Line

King's Indian: Classical

Italian: Two Knights

Critical Blunders