Aidar Sadykov vs Leonid Efimov
Aidar Sadykov (39, RUS) and Leonid Efimov (17, FM, FID) have never met in classical OTB, but played 43 rapid/blitz games on record. They share 85 common opponents with at least 3 games each side, providing a calibration of relative strength. With current classical ratings of 2237 and 2336, the Elo model gives Efimov a 47% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2237 vs 2336 (Δ -99)
With Aidar Sadykov as white
29% Aidar24% draw47% Leonid
With Leonid Efimov as white
22% Aidar20% draw58% Leonid
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Aidar Sadykov | Leonid Efimov | |
|---|---|---|
| Current rating (STD) | 2237 | 2336 |
| Peak rating | 2286 · Apr 2003 | 2347 · Oct 2025 |
| Peak age | 16 | 16 |
| World rank now | #8,373 | #3,048 |
| World rank peak | #6,454 | #2,758 |
| Federation rank now | #904 | #73 |
| Games (career, STD) | 29 | 723 |
| Months active | 209 | 123 |
| % white wins | 57% | 59% |
| % black wins | 56% | 52% |
| TPR last 12m (STD) | — | 2317 |
| Activity 12m (games) | 145 | 217 |
Best Win
Aidar Sadykov
Leonid Efimov
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (43)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Aidar Sadykov
Leonid Efimov