Scouting report: Sergey Ionov (GM, RUS)

1,085 over-the-board games in the Chess Stalker database (1,043 classical, 27 rapid, 15 blitz): 33% wins, 51% draws, 16% losses. FIDE rating 2502 standard, 2357 rapid, 2354 blitz. 20 games analyzed with Stockfish: 94% accuracy, 0.05 blunders per game.

Opening repertoire of Sergey Ionov as White and Black, with results per line — free.
Weaknesses and blunder patterns, evaluated with Stockfish — free.
Recent over-the-board games and endgame statistics.
Twin Bot: a sparring bot that imitates Sergey Ionov's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/4100875 — no account needed.

Sergey Ionov

TitleGrandmasterFederationRussiaBorn1962FIDE ID4100875

Classical2502

Rapid2357

Blitz2354

Games1,085

W · D · LWon · Drawn · Lost33 / 51 / 16

Peak2559May 2011

Rating history

2300

2400

2500

Oct

2024

Apr

Jul

Oct

2025

Apr

Jul

Oct

2026

Apr

Jul

Oct

Oct 2023Nov 2026

Classical2502Rapid2357Blitz2354no games played

Accuracy by phase

97.0%Opening92.6%Middlegame96.1%Endgame

Clutch factor

Insufficient data

Play style

Elite accuracy: 93.8% average

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 as

(66% in 97 games)

Recent games

Sirotkina, Nina(2149)

Sveshnikov Memorial Blitz · 9 Dec 2023

½–½

Idrisova, Roza(1813)

Sveshnikov Memorial Blitz · 9 Dec 2023

½–½

Dragomarezkij, Evgeni(2234)

Sveshnikov Memorial Blitz · 9 Dec 2023

½–½

Bogumil, Tatiana(2090)

Sveshnikov Memorial Blitz · 9 Dec 2023

½–½

Raetsky, Alexander(2310)

Sveshnikov Memorial Blitz · 9 Dec 2023

0–1

Play against Ionov's Twin

Their real openings, level & style

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

Based on

1,085 games

Based on 1,085 games

Openings

546 games as White · scores 61.1%

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White

No consistent strengths detected as white

By family

open a family to see its lines

PROTime controls · Years · Events

1,085 games in scope

LineECOGamesLast playedWins · draws · lossesScorevs 61.1%

A01–A04997y

43%46%11

66.7%+5.6 pts

A45–E11787y

38%45%17

60.9%—

A11–A30563y

34%48%18

58.0%−3.0 pts

A40–D02513y

37%43%20%

58.8%—

D10–D11459y

20%67%13

53.3%−7.7 pts

E12–E154215y

38%52%10

64.3%+3.2 pts

E60–E703815y

34%55%11

61.8%—

D30–D37323y

31%63%

62.5%—

Mistakes

Problematic pieces

Insufficient data

Critical moment

Insufficient data

Error heatmap · Critical squaresError heatmap

Insufficient data

Critical blunders

Tactical errors analyzed with Stockfish

Couldn't load this.

Endgame statistics

17 endgames (47.2%) · force Rook + Minor (0%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

47.2%

17 / 36

B vs N Pref

52.4%·47.8%

prefers the bishop

PiecesTypeWin %games

Rook + Equal Minors

56%44%

77.9%353g

R+Bishop vs R+Knight

59%41%

79.4%306g

Rook vs Minor (Exchange)

49%50%

73.7%281g

Rook vs Rook

48%50%

72.6%252g

Rook vs Two Minors

56%44%

78.1%160g

Pure Pawn

36%50%14

60.6%109g

Rook + Equal Minors77.9%353g

R+Bishop vs R+Knight79.4%306g

Rook vs Minor (Exchange)73.7%281g

Rook vs Rook72.6%252g

Rook vs Two Minors78.1%160g

Pure Pawn60.6%109g

Weak in Rook + Minor: only 0% win rate (9 games). Force this endgameShow all 14 types

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Repertoire

PROTime controls · Years · Events

1,085 games in scope

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Explore the repertoireevery move played, ranked by frequency

546 games36%W51%D13%L

546games in this linewon 36%, drew 51%, lost 13%

Move

1. d4

3643y

34%52%14

60%

1. ♞f3

977y

42%47%11

66%

1. c4

563y

34%48%18%

58%

1. e4

273y

33%52%15

59%

1. b3

2—

100%

100%

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