Ruben Gideon Koellner vs Ashot Parvanyan
Ruben Gideon Koellner (22, IM, GER) and Ashot Parvanyan (25, IM, GER) have met 5 times in classical OTB. Parvanyan leads the classical series 3–2 (0 draws). With current classical ratings of 2530 and 2439, the Elo model gives Koellner a 56% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2530 vs 2439 (Δ +91)
With Ruben Gideon Koellner as white
56% Ruben22% draw22% Ashot
With Ashot Parvanyan as white
45% Ruben26% draw29% Ashot
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Ruben Gideon Koellner | Ashot Parvanyan | |
|---|---|---|
| Current rating (STD) | 2530+24 | 2439-3 |
| Peak rating | 2530 · May 2026 | 2468 · Nov 2021 |
| Peak age | 22 | 20 |
| World rank now | #408 | #1,140 |
| World rank peak | #408 | #1,024 |
| Federation rank now | #21 | #67 |
| Games (career, STD) | 1,190 | 914 |
| Months active | 138 | 169 |
| % white wins | 53% | 47% |
| % black wins | 46% | 41% |
| TPR last 12m (STD) | 2513 | 2438 |
| Activity 12m (games) | 150 | 121 |
Best Win
Ruben Gideon Koellner
Ashot Parvanyan
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).
Ruben Gideon Koellner
Ashot Parvanyan