Sipila, Vilka

FIN FIN·Born 1987·FIDE #505455·1,799 Games

FIDE OTB · #505455 · 1,799 Games

Classical24741,757 g Games

Rapid240832 g Games

Blitz235910 g Games

Play against Sipila's Twin

PRO

Uses their openings, level & style

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

Ready to play

1799 games analyzed

Statistics

Total

1799

Wins

945

Draws

275

Losses

579

53%15%32%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 93.2% average

High resilience (59%): Dangerous even when losing

Solid conversion: 92%

Very consistent (91%)

Very precise: only 0.1 blunders/game

Dominates 1.e4 ♔ (66% in 446 games)

Vulnerable to 1.b3 ♚ (only 45%)

Deep Analysis

Stockfish 18 · Classical games · 331 analyzed

Accuracy by phase

Opening

96.4%

Middlegame

93.3%

Endgame

94.9%

Clutch Factor

+5%

Winning (+2)Winning (+2)

94%181g

EqualEqual position

94%75g

Losing (−2)Losing (−2)

90%75g

Accuracy under pressure

Problematic Pieces — which cause most errors?

22%

73 err

20%

65 err

17%

55 err

16%

54 err

14%

45 err

12%

40 err

Critical Moment

Move 43 avg

1-15

16-25

35%

26-35

30%

36-45

30%

46+

35% of blunders after move 26-35 — keep the tension until then.of blunders occur in moves 26-35. Keep the tension until that moment.

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

Hotspot zone

f4 / c3

Critical squares

17 err

11 err

10 err

f4/c3 account for most of the errors. Force decisions in those zones.

Openings

1,799 GamesBased on 1,799 player games

Weaknesses

— exploit these— exploit these lines

aswhite53.3%Losses

French: Classical — 1.e4 e6 2.d4 d5 3.Nc3 Nf6

15 Games · last played 2 years agoPlay this line

aswhite50.0%Losses

1.b3 e5 2.Bb2 Nc6 — 1.b3 e5 2.Bb2 Nc6

36 Games · last played 12 months agoPlay this line

asblack54.5%Losses

French: Winawer — 1.e4 e6 2.d4 d5 3.Nc3 Bb4

11 Games · last played 4 months agoPlay this line

Strengths

— avoid these— avoid these lines

aswhite91.7%Wins

Petroff: Main Line — 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d612 Games · last played 4 months ago

12 Games · last played 4 months ago

aswhite80.0%Wins

1.b3 Nf6 2.Bb2 g6 — 1.b3 Nf6 2.Bb2 g620 Games

20 Games

asblack61.5%Wins

Nimzo-Indian — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb413 Games · last played last year

13 Games · last played last year

asblack56.9%Wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d651 Games · last played 4 months ago

51 Games · last played 4 months ago

Critical Blunders

10 errors · Stockfish

#35Rd1??Tacticsvs CarlssonOTB · 2026

#38Nd6??Tacticsvs KuznecovaOTB · 2025

#34Rd7??Tacticsvs OdnerOTB · 2025

#35Re6??Tacticsvs KoykkaOTB · 2025

#53Rfc2??Endgamevs Van HengelOTB · 2025

#50Ke3??Endgamevs RozmanOTB · 2024

#46Nd3+??Endgamevs BanuszOTB · 2024

#37Ng5??Tacticsvs Chitlange SakshiOTB · 2024

#48Ke5??Endgamevs FlomOTB · 2024

#20Bd7??Tacticsvs SaaskilahtiOTB · 2024

Recent Games

1,799 Games

Draw

Kejna, Piotr(2311)

26th ch-EUR Indiv 2026 · 19 Apr 2026

½-½

Loss

Maltsevskaya, Aleksandra(2393)

26th ch-EUR Indiv 2026 · 18 Apr 2026

0-1

Win

Brzezina, Piotr(2327)

26th ch-EUR Indiv 2026 · 16 Apr 2026

0-1

Win

Ribeiro, Gustavo(2280)

26th ch-EUR Indiv 2026 · 15 Apr 2026

1-0

Loss

Zakin, Ilay(2330)

26th ch-EUR Indiv 2026 · 14 Apr 2026

1-0

Loss

Maurizzi,Marc Andria(2608)

26th ch-EUR Indiv 2026 · 13 Apr 2026

0-1

Endgame Statistics

PRO192 endgames (52.5%)

Strongest

60%

Bishop vs Knight

Weakest

12%

Minor Piece Pairs

Reaches Endgame

52.5%

192 / 366

B vs N Pref

50% · 66.7%

2 / 3

PiecesTypeWin %Games

Rook + Minor

38.8%116

Rook+Bishop vs Rook+Knight

51.6%64

Rook + Equal Minors

27.1%48

Rook vs Rook

28.3%46

Rook vs Minor (Exchange)

38.5%39

Queen vs Pieces

43.3%30

Rook + Minor38.8%116

Rook+Bishop vs Rook+Knight51.6%64

Rook + Equal Minors27.1%48

Rook vs Rook28.3%46

Rook vs Minor (Exchange)38.5%39

Queen vs Pieces43.3%30

Weakest: Minor Piece Pairs 12%Show all 23 types

Unlock Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

908 Games

56%14%30%

Move	Games	%
1.e4	446	66%
1.b3	137	58%
1.d4	132	57%
1.Nf3	52	63%
1.c4	49	63%
1.f4	28	59%
1.Nc3	13	62%
1.a4	7	57%
1.a3	7	57%
1.b4Strong	6	92%
1.f3	5	60%
1.g3	5	60%
1.h3	4	50%
1.e3Strong	4	75%
1.h4Strong	3	83%
1.c3Strong	3	100%
1.Na3Strong	2	75%
1.Nh3Strong	2	100%
1.g4Strong	2	100%
1.d3Weak	1	0%

MoveGamesPerformance%

1.e4

446

66%

1.b3

137

58%

1.d4

132

57%

1.Nf3

63%

1.c4

63%

1.f4

59%

1.Nc3

62%

1.a4

57%

1.a3

57%

1.b4Strong

92%

1.f3

60%

1.g3

60%

1.h3

50%

1.e3Strong

75%

1.h4Strong

83%

1.c3Strong

100%

1.Na3Strong

75%

1.Nh3Strong

100%

1.g4Strong

100%

1.d3Weak