What is Sergey Ionov's FIDE rating?

Sergey Ionov's FIDE rating is 2502 standard, 2357 rapid, 2354 blitz. Chess Stalker tracks it together with Sergey Ionov's over-the-board games and opening repertoire.

How many OTB games has Sergey Ionov played?

The Chess Stalker database holds 1,085 over-the-board games by Sergey Ionov (1,043 classical, 27 rapid, 15 blitz), with 33% wins. The full list, with openings and results, is on Sergey Ionov's Chess Stalker profile.

How do I prepare against Sergey Ionov?

Open Sergey Ionov's free Chess Stalker report: opening repertoire with results per line as White and Black, recurring weaknesses and blunder patterns evaluated with Stockfish, and recent games. Then rehearse against the Twin Bot, which imitates Sergey Ionov's style, before facing them.

Sergey Ionov

Russiaborn 1962FIDE ID 4100875

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026

2300

2400

2500

2502 · Sep 2023

Oct

2024

Apr

Jul

Oct

2025

Apr

Jul

Oct

2026

Apr

Jul

Oct

Sep 2023Oct 2026

2502Classical

2357Rapid

2354Blitz

2559peak, May 2011

1,085games

355wins, 33%

552draws, 51%

178losses, 16%

Rated gamesInactive · rating frozenOfficial FIDE lists · drag the range below the chartPeak 2559 · May 2011

Play style

before facing themWhat you need to know before facing them

Elite accuracy: 93.8% average

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 as

(66% in 97 games)

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

1,085 gamesBased on 1,085 player games

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

Deep analysis

Stockfish · Classical · 20 analyzedStockfish · Classical games · 20 analyzed

Accuracy by phase

Opening

97.0%

Middlegame

92.6%

Endgame

96.1%

Clutch factor

+10%

Winning (+2)Winning (+2)

97%3g

EqualEqual position

95%13g

Losing (−2)Losing (−2)

87%4g

Accuracy under pressure barely drops when losing.

Problematic pieces

35%

6 err

29%

5 err

12%

2 err

12%

2 err

1 err

Critical moment

Move 70 avg

1-15

16-25

26-35

36-45

100%

46+

100% of blunders occur after move 46. Keep tension until then.of blunders occur after move 46. Keep tension until then.

Error heatmap · Critical squaresError heatmap

Few

Many

12Errors mapped

b3 / d4Hotspot zone

Critical squares

22 err

11 err

b3/d4 concentrate most errors. Force decisions in those zones.

Critical blunders

7 errors · Stockfish

#31

♝d2?? vs Bogumil

Middlegame · Blitz · 2023

#38

♚h8?? vs Balashov

Middlegame · Blitz · 2023

#49

♜f2?? vs Smagin

Endgame · Blitz · 2023

#70

♚h7?? vs Lokander

Endgame · OTB · 2020

#34

♚g6?? vs Mickevicius

Middlegame · Rapid · 2019

#18

♜ac1?? vs Chernyak

Middlegame · Rapid · 2019