Nadya Toncheva vs Deyan Samuil Kostov
Nadya Toncheva (21, FM, BUL) and Deyan Samuil Kostov (20, FM, BUL) have met 4 times in classical OTB plus 1 rapid/blitz game. Toncheva leads the classical series 3–0 (1 draw). With current classical ratings of 2320 and 2320, the Elo model gives Toncheva a 42% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2320 vs 2320 (Δ +0)
With Nadya Toncheva as white
42% Nadya26% draw32% Deyan
With Deyan Samuil Kostov as white
32% Nadya26% draw42% Deyan
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Nadya Toncheva | Deyan Samuil Kostov | |
|---|---|---|
| Current rating (STD) | 2320+7 | 2320 |
| Peak rating | 2362 · Dec 2025 | 2368 · Aug 2025 |
| Peak age | 20 | 19 |
| World rank now | #3,485 | #3,485 |
| World rank peak | #2,447 | #2,313 |
| Federation rank now | #29 | #29 |
| Games (career, STD) | 1,054 | 822 |
| Months active | 141 | 131 |
| % white wins | 50% | 50% |
| % black wins | 47% | 47% |
| TPR last 12m (STD) | 2314 | 2315 |
| Activity 12m (games) | 194 | 73 |
Best Win
Nadya Toncheva
Deyan Samuil Kostov
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (5)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Nadya Toncheva
Deyan Samuil Kostov