Karttunen, Mika

FIN FIN·Born 1981·FIDE #502081

2478Classical

2400Rapid

2396Blitz

Statistics

Total3,733

Wins1,825

Draws678

Losses1,230

49%18%33%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 93.2% average

Solid conversion: 81%

Very consistent (92%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 as

(78% in 58 games)

Vulnerable to 1.b3

(only 38%)

Play against Karttunen's Twin

Uses their openings, level & style

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

Ready to play

3,733 games analyzed

Deep Analysis

Stockfish 18 · Classical · 147 analyzedStockfish 18 · Classical games · 147 analyzed

Accuracy by phase

Opening

96.3%

Middlegame

92.9%

Endgame

95.2%

Clutch Factor

+4%

Winning (+2)Winning (+2)

94%54g

EqualEqual position

95%50g

Losing (−2)Losing (−2)

90%43g

Accuracy under pressure

Problematic Pieces — which cause most errors?

23%

35 err

20%

31 err

18%

27 err

16%

25 err

12%

19 err

11%

17 err

Critical Moment

Move 45 avg

1-15

16-25

31%

26-35

23%

36-45

46%

46+

46% of blunders occur after move 46 — keep tension until then.of blunders occur after move 46 — keep tension until then.

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

Hotspot zone

g4 / e2

Critical squares

7 err

6 err

5 err

g4/e2 concentrate most errors. Force decisions in those zones.

Openings

3,733 gamesBased on 3,733 player games

Weaknesses

— exploit these— exploit these lines

aswhite75.0%losses

Modern Benoni — 1.d4 Nf6 2.c4 c5 3.d5 e6

8 games · low sample · last played last yearPlay this line

aswhite62.5%losses

Ruy Lopez: Marshall — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5

8 games · low sample · last played 6 months agoPlay this line

asblack57.1%losses

Catalan — 1.d4 Nf6 2.c4 e6 3.g3

14 games · last played 8 months agoPlay this line

asblack54.2%losses

Grünfeld — 1.d4 Nf6 2.c4 g6 3.Nc3 d5

24 games · last played 4 months agoPlay this line

Strengths

— avoid these— avoid these lines

aswhite92.3%wins

Italian: Two Knights — 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf613 g13 games · last played 3 months ago

aswhite75.0%wins

King's Indian: Main Line — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O16 g16 games

asblack83.3%wins

Ruy Lopez: Marshall — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b512 g12 games · last played 6 months ago

asblack48.5%wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6198 g198 games

Critical Blunders

10 errors · Stockfish

#31Rg3??Tacticsvs ErdogmusOTB · 2026

#60Kb6??Endgamevs HansenOTB · 2026

#48Rg3??Endgamevs BjerreOTB · 2026

#43Be6??Endgamevs YakubboevOTB · 2026

#46Qe4??Endgamevs MovahedOTB · 2026

#31g3??Tacticsvs DudaOTB · 2026

#32Ned7??Tacticsvs KeymerOTB · 2025

#93Kf6??Endgamevs LevitanOTB · 2025

#18Qf4??Tacticsvs NybackOTB · 2025

#15Ne5??Tacticsvs HambletonOTB · 2024

Recent Games

3,733 games

Draw

Salonen, Aku(2247)

34th Heart of Finland Op · 19 Jul 2026

½-½

Win

Kivimaki, Kasper(2156)

34th Heart of Finland Op · 18 Jul 2026

1-0

Draw

Panda, Barnabas(2187)

34th Heart of Finland Op · 17 Jul 2026

½-½

Loss

Chen,Jonathan(2182)

34th Heart of Finland Op · 16 Jul 2026

1-0

Win

Borsos, Bogdan(2131)

34th Heart of Finland Op · 16 Jul 2026

1-0

Win

Seppala, Joni(2005)

34th Heart of Finland Op · 15 Jul 2026

1-0

Endgame Statistics

PRO87 endgames (60%) · avoid Minor Piece Pairs (0%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

60%

87 / 145

B vs N Pref

52.4%·47.8%

prefers the bishop

PiecesTypeWin %games

Rook + Equal Minors

77.9%353

R+Bishop vs R+Knight

79.4%306

Rook vs Minor (Exchange)

73.7%281

Rook vs Rook

72.6%252

Rook vs Two Minors

78.1%160

Pure Pawn

60.6%109

Rook + Equal Minors77.9%353

R+Bishop vs R+Knight79.4%306

Rook vs Minor (Exchange)73.7%281

Rook vs Rook72.6%252

Rook vs Two Minors78.1%160

Pure Pawn60.6%109

Weak in Minor Piece Pairs: only 0% win rate (5 games) — Force thisShow all 14 types

Unlock Endgame Statistics

14 endgame categories — discover where they collapse under pressure

Repertoire

PRO

Move arrowsmost-played moves

Starting Position

SF18

1,859 games

53%16%31%

Move	games	%
1.e4	847	58%
1.d4	742	65%
1.c4	202	59%
1.Nf3Strong	58	78%
1.Nc3	4	50%
1.g3Strong	3	83%
1.b3Strong	2	100%
1.f4Weak	1	0%

MovegamesPerf%

1.e4

847

58%

1.d4

742

65%

1.c4

202

59%

1.Nf3Strong

78%

1.Nc3

50%

1.g3Strong

83%

1.b3Strong

100%

1.f4Weak