Tiviakov, Sergei

NED NED·Born 1973·FIDE #1008013·3,677 Games

Classical25303,550 Games

Rapid2602105 Games

Blitz265322 Games

Play against Tiviakov, Sergei's Twin

PRO

Uses their openings, level & style

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

Ready to play

3677 games analyzed

Statistics

Total

3677

Wins

1677

Draws

1552

Losses

448

46%42%12%

Play Style

What you need to know before facing them

Elite accuracy: 93.8% average

Solid conversion: 86%

Very consistent (81%)

Very precise: only 0.1 blunders/game

Dominates 1.e4 ♔ (72% in 1873 games)

Deep Analysis

Stockfish 18 · Classical games · 372 analyzed

Accuracy by phase

Opening

96.6%

Middlegame

94.2%

Endgame

95.6%

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

+6%

Winning (+2 or more)

95%116g

Equal position

95%179g

Losing (-2 or more)

89%77g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

26%

58 errors

24%

54 errors

17%

39 errors

13%

29 errors

12%

26 errors

20 errors

Critical Moment — When does the first serious error occur?

Move 36 average

23%

15%

31%

1-15

16-25

26-35

36-45

46+

31% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

Hotspot zone

e5 / e4

Critical squares

13 err

11 err

9 err

8 err

7 err

e5/e4 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

No significant weaknesses detected as White

No significant weaknesses detected as Black

Strengths

— avoid these lines

White58.2%Wins

French: Tarrasch — 1.e4 e6 2.d4 d5 3.Nd2244 Games · last played 2 months ago

White69.7%Wins

Sicilian: Closed — 1.e4 c5 2.Nc3 Nc676 Games · last played 2 months ago

Black53.4%Wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6163 Games · last played last year

Black53.5%Wins

Reti: Double Fianchetto — 1.Nf3 Nf6 2.g3 b643 Games · last played 3 weeks ago

Critical Blunders

10 errors · Stockfish

#27Rb1??Tacticsvs BegmuratovOTB · 2025

#30Rxd5??Tacticsvs MarnOTB · 2024

#29g3??Tacticsvs SokolovOTB · 2024

#89Nc7??Endgamevs SokolovOTB · 2024

#44Re8??Endgamevs L'AmiOTB · 2024

#28Qc2??Tacticsvs NikitenkoOTB · 2024

#49Rxg7+??Endgamevs SonisOTB · 2024

#40c7??Tacticsvs HaubroOTB · 2024

#56Kf3??Endgamevs RasulovOTB · 2023

#30f3??Tacticsvs SuleymenovOTB · 2022

Recent Games

3,677 Games

Vrolijk, Liam(2519)

ch-NED KO 2026 · 11 Jul 2026

1-0

Vrolijk, Liam(2519)

ch-NED KO 2026 · 11 Jul 2026

½-½

Vrolijk, Liam(2519)

ch-NED KO 2026 · 10 Jul 2026

½-½

Van den Doel, Erik(2549)

ch-NED KO 2026 · 9 Jul 2026

1-0

Van den Doel, Erik(2549)

ch-NED KO 2026 · 8 Jul 2026

½-½

L'Ami, Erwin(2592)

ch-NED KO 2026 · 7 Jul 2026

½-½

Endgame Statistics

PRO23 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

1884 Games

53%39%8%

Move	Games	%
1.e4 Strong	1873	72%
1.c4 Strong	7	71%
1.d4	3	67%
1.f4	1	50%

MoveGamesPerformance%

1.e4Strong

1873

72%

1.c4Strong

71%

1.d4

67%

1.f4

50%