Aaron Noah Koellner vs Ruben Gideon Koellner
Aaron Noah Koellner (24, CM, GER) and Ruben Gideon Koellner (22, IM, GER) have met 6 times in classical OTB plus 1 rapid/blitz game. Koellner leads the classical series 4–1 (1 draw). With current classical ratings of 2213 and 2530, the Elo model gives Koellner a 76% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2213 vs 2530 (Δ -317)
With Aaron Noah Koellner as white
9% Aaron14% draw76% Ruben
With Ruben Gideon Koellner as white
6% Aaron12% draw82% Ruben
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Aaron Noah Koellner | Ruben Gideon Koellner | |
|---|---|---|
| Current rating (STD) | 2213-20 | 2530+24 |
| Peak rating | 2275 · Mar 2020 | 2530 · May 2026 |
| Peak age | 18 | 22 |
| World rank now | #7,478 | #408 |
| World rank peak | #5,750 | #408 |
| Federation rank now | #762 | #21 |
| Games (career, STD) | 817 | 1,190 |
| Months active | 138 | 138 |
| % white wins | 50% | 53% |
| % black wins | 46% | 46% |
| TPR last 12m (STD) | 2201 | 2513 |
| Activity 12m (games) | 64 | 115 |
Best Win
Aaron Noah Koellner
Ruben Gideon Koellner
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (7)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Aaron Noah Koellner
Ruben Gideon Koellner