Dorfman, Iossif

FRA FRA·Born 1953·FIDE #604011·1,635 Games

Classical25311,603 Games

Rapid254526 Games

Blitz25126 Games

Play against Dorfman, Iossif's Twin

PRO

Uses their openings, level & style

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

Ready to play

1635 games analyzed

Statistics

Total

1635

Wins

518

Draws

929

Losses

188

32%57%11%

Play Style

What you need to know before facing them

Elite accuracy: 92.7% average

Plays 2.2% better with black

Very precise: only 0.2 blunders/game

Dominates 1.g3 ♔ (83% in 35 games)

Deep Analysis

Stockfish 18 · Classical games · 78 analyzed

Accuracy by phase

Opening

96.5%

Middlegame

93.6%

Endgame

94.5%

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

+4%

Winning (+2 or more)

94%16g

Equal position

94%41g

Losing (-2 or more)

89%21g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

22%

26 errors

21%

25 errors

18%

21 errors

16%

19 errors

14%

16 errors

10 errors

Critical Moment — When does the first serious error occur?

Move 29 average

33%

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 1-15. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

Hotspot zone

e5 / e6

Critical squares

8 err

6 err

5 err

4 err

e5/e6 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

No significant weaknesses detected as White

Black53.3%Loses

Sicilian: Kan — 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6

15 Games · last played 22 years agoPlay this line

Strengths

— avoid these lines

White64.3%Wins

English: Anglo-Indian — 1.c4 Nf6 2.Nc3 g614 Games · last played 23 years ago

White58.3%Wins

Sicilian: 2...Nc6 — 1.e4 c5 2.Nf3 Nc612 Games · last played 22 years ago

Black46.4%Wins

Sicilian: Najdorf — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a628 Games · last played 13 years ago

Critical Blunders

7 errors · Stockfish

#36f6??Tacticsvs RodshteinOTB · 2023

#41Rxf4??Endgamevs GharamianOTB · 2022

#33Qa1??Tacticsvs ProkhorovOTB · 2019

#55Be5+??Endgamevs CouttonOTB · 2019

#36Ng3??Tacticsvs IvanchukOTB · 1998

#23f5??Tacticsvs IvanchukOTB · 1998

#18e7e8??Endgamevs TalOTB

Recent Games

1,635 Games

Lagarde, Maxime(2600)

96. ch-FRA 2023 · 19 Aug 2023

½-½

Lagarde, Maxime(2600)

French Championship · 19 Aug 2023

½-½

Lagarde, Maxime(2600)

96. ch-FRA 2023 · 18 Aug 2023

1-0

Delorme, Axel(2483)

TCh-FRA Top 16 Haute 2023 · 11 Jun 2023

½-½

Moussard, Jules(2655)

TCh-FRA Top 16 Haute 2023 · 8 Jun 2023

1-0

Pourquet, Matthieu(2181)

TCh-FRA Top 16 GpA 2023 · 7 Jun 2023

½-½

Endgame Statistics

PRO17 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

17 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

815 Games

39%54%7%

Move	Games	%
1.d4	359	63%
1.c4	194	68%
1.Nf3	139	67%
1.e4	88	63%
1.g3 Strong	35	83%

MoveGamesPerformance%

1.d4

359

63%

1.c4

194

68%

1.Nf3

139

67%

1.e4

63%

1.g3Strong

83%