Costachi, Mihnea

ROU ROU·Born 2000·FIDE #1217518·2,623 Games

Classical24592,343 Games

Rapid2381158 Games

Blitz2482164 Games

Statistics

2623

Total

1349

Wins

581

Draws

692

Losses

51%22%26%

Play Style

What you need to know before facing them

Elite accuracy: 93.8% average

High resilience (57%): Dangerous even when losing

Solid conversion: 90%

Very consistent (92%)

Very precise: only 0.0 blunders/game

Dominates 1.c4 ♔ (79% in 19 games)

Deep Analysis

Stockfish 18 · Classical games · 173 analyzed

Accuracy by phase

Opening96.1%

Middlegame92.9%

Endgame95.2%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)94%

80 Games

Equal position95%

69 Games

Losing (-2 or more)89%

24 Games

Problematic Pieces

Which pieces cause most errors?

♖

22%

31 errors

♕

21%

30 errors

♙

18%

25 errors

♞

16%

22 errors

♗

14%

19 errors

♔

13 errors

Critical Moment

When does the first serious error occur?

Move 56average

1-15

16-25

26-35

36-45

46+

67% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

abcdefgh

Many

Few

Critical squares

b56 err

e76 err

d25 err

e25 err

f15 err

b5/e7 concentrate most errors. Force decisions in those zones.

Recent Games

Livaic, Leon2569

Round 7: Livaic, Leon - C... · 30 Nov 2025

0-1

Anton Guijarro, David2560

Round 10: Costachi, Mihne... · 30 Nov 2025

1-0

Kuipers, Dustin2066

Round 2: Costachi, Mihnea... · 30 Nov 2025

1-0

Georgiev, Kiril2556

Round 13: Georgiev, Kiril... · 30 Nov 2025

½-½

Iturrizaga Bonelli, Eduardo2630

Round 12: Costachi, Mihne... · 30 Nov 2025

0-1

Markocic, Tine2143

Round 3: Markocic, Tine -... · 30 Nov 2025

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

1.Nc3 d5 2.d4 Nf6

43.4%

53 Games·Loses

1.Nc3 d5 2.d4 Nf6

London System

43.4%

53 Games·Loses

1.Nc3 d5 2.d4 Nf6 3.Bf4

Black

1.b3 d5 2.Bb2 Nf6

60.0%

10 Games·Loses

1.b3 d5 2.Bb2 Nf6

Strengths

AVOID

White

1.Nc3 Nf6 2.e4 e5

81.3%

16 Games·Wins

1.Nc3 Nf6 2.e4 e5

Italian: Giuoco Piano

76.9%

13 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5

Black

Italian: Evans Gambit

75.0%

12 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4

Italian: Giuoco Piano

57.0%

128 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#36Rd6??

Tactics

vs Wojtaszek

Blitz·2025

▶

#23Bd5??

Tactics

vs Kukelko

Blitz·2025

▶

#96Rc8+??

Endgame

vs Plat

Blitz·2025

▶

#32Qe7??

Tactics

vs Cruz de la Osa

Rapid·2025

▶

#68h2??

Endgame

vs David

Rapid·2025

▶

#28Rxh3??

Tactics

vs Djukic

Blitz·2024

▶

#34Qf5??

Tactics

vs Sirigos

Blitz·2024

▶

#31Kf8??

Tactics

vs Tsolakidou

Blitz·2024

▶

#20Nf5??

Tactics

vs Radeva

Blitz·2024

▶

#18f4??

Tactics

vs Zlatkov

Blitz·2024

Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

2025

2024

2023

2022

2021

2020

PRO

Starting Position

1320 Games

53%22%25%

Move	Games	%
1.d4	861	62%
1.e4 Strong	192	73%
1.Nc3	167	61%
1.Nf3	31	68%
1.c4 Strong	19	79%
1.b3 Strong	12	71%
1.b4 Strong	7	71%
1.a3 Strong	6	75%
1.f4 Strong	6	83%
1.f3 Weak	5	20%
1.c3 Strong	3	100%
1.a4 Strong	2	100%
1.e3 Strong	2	100%
1.g3 Weak	2	0%
1.g4	2	50%
1.h4 Strong	1	100%
1.d3 Strong	1	100%
1.Nh3	1	50%

1.d4

62%

861

1.e4

73%

192

1.Nc3

61%

167

1.Nf3

68%

1.c4

79%

1.b3

71%

1.b4

71%

1.a3

75%

1.f4

83%

1.f3

20%

1.c3

100%

1.a4

100%

1.e3

100%

1.g3

1.g4

50%

1.h4

100%

1.d3

100%

1.Nh3

50%

Costachi, Mihnea

Play against Costachi, Mihnea's Twin

Statistics

Play Style

Deep Analysis

Clutch Factor

Problematic Pieces

Critical Moment

Error Heatmap

Recent Games

Openings

Weaknesses

1.Nc3 d5 2.d4 Nf6

London System

1.b3 d5 2.Bb2 Nf6

Strengths

1.Nc3 Nf6 2.e4 e5

Italian: Giuoco Piano

Italian: Evans Gambit

Italian: Giuoco Piano

Critical Blunders