Beerdsen, Thomas

NED NED·Born 1998·FIDE #1030108·3,349 Games

Classical25043,222 Games

Rapid250452 Games

Blitz255299 Games

Play against Beerdsen, Thomas's Twin

PRO

Uses their openings, level & style

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

Ready to play

3349 games analyzed

Statistics

Total

3349

Wins

1739

Draws

706

Losses

898

52%21%27%

Play Style

What you need to know before facing them

Elite accuracy: 93.3% average

High resilience (62%): Dangerous even when losing

Solid conversion: 90%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.a4 ♔ (73% in 20 games)

Vulnerable to 1.c4 ♚ (only 44%)

Deep Analysis

Stockfish 18 · Classical games · 827 analyzed

Accuracy by phase

Opening

96.1%

Middlegame

93.1%

Endgame

94.9%

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

+5%

Winning (+2 or more)

95%243g

Equal position

95%177g

Losing (-2 or more)

90%80g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

22%

67 errors

21%

65 errors

18%

55 errors

15%

47 errors

12%

38 errors

11%

34 errors

Critical Moment — When does the first serious error occur?

Move 35 average

21%

29%

21%

1-15

16-25

26-35

36-45

46+

29% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

102

Hotspot zone

f3 / d4

Critical squares

13 err

11 err

10 err

f3/d4 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

White44.4%Loses

French: Steinitz — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5

9 Games · Low sample · last played 7 years agoPlay this line

Black75.0%Loses

Sicilian: Closed — 1.e4 c5 2.Nc3 a6

8 Games · Low sample · last played 5 years agoPlay this line

Strengths

— avoid these lines

White57.2%Wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6257 Games · last played 3 weeks ago

White68.3%Wins

French: Classical — 1.e4 e6 2.d4 d5 3.Nc3 Nf660 Games · last played 3 months ago

Black69.6%Wins

Italian: Two Knights — 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf692 Games · last played last year

Black66.7%Wins

Ruy Lopez: Schliemann — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5108 Games

Critical Blunders

10 errors · Stockfish

#23Qf6??Tacticsvs KuninOTB · 2026

#44gxh3??Endgamevs BosiocicOTB · 2025

#35Qh1+??Tacticsvs NigmatovOTB · 2025

#29Bb5??Tacticsvs BadacsonyiOTB · 2025

#33Qxe5??Tacticsvs BadacsonyiOTB · 2025

#35Kf2??Tacticsvs Van ForeestOTB · 2025

#32Nfe8??Tacticsvs Van ForeestOTB · 2025

#39Rxe1+??Tacticsvs WarmerdamRapid · 2025

#36Ra3??Endgamevs BatsurenOTB · 2025

#26Bxf7??Tacticsvs KacharavaOTB · 2025

Recent Games

3,349 Games

Van Wely, Loek(2640)

ch-NED KO 2026 · 5 Jul 2026

0-1

Van Wely, Loek(2640)

ch-NED KO 2026 · 4 Jul 2026

1-0

Leenen, Boyd(2188)

HSG Open 2026 · 21 Jun 2026

1-0

Van Batenburg, Mees(2204)

HSG Open 2026 · 21 Jun 2026

½-½

Goes, Sten(2221)

HSG Open 2026 · 20 Jun 2026

½-½

Martyr, Reginald(2169)

HSG Open 2026 · 20 Jun 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

1685 Games

56%20%24%

Move	Games	%
1.e4	1568	66%
1.d4	29	55%
1.g4	23	63%
1.c4	21	67%
1.a4 Strong	20	73%
1.Nf3	8	69%
1.h3 Strong	6	83%
1.b3	5	70%
1.Nc3	3	67%
1.a3 Strong	1	100%
1.g3 Strong	1	100%

MoveGamesPerformance%

1.e4

1568

66%

1.d4

55%

1.g4

63%

1.c4

67%

1.a4Strong

73%

1.Nf3

69%

1.h3Strong

83%

1.b3

70%

1.Nc3

67%

1.a3Strong

100%

1.g3Strong

100%