CMAaron Noah Koellner
GER · FIDE ID 12993085 · 86 tournament games since 2021
Standard
2166
#1102 in GER (active)
Rapid
2115
#886 in GER (active)
Blitz
2134
#958 in GER (active)
Score
47%
30 W · 21 D · 35 L
Opp. avg
2196
Last 50 games
Last game
2026-08-20
Oberbank Challenger Open 2026
Prep summary
- As White: 1.d4 in 98% of games (scores 40%).
- Against 1.e4: 1...c5 in 14 of 16 games (Sicilian Defense), scoring 43%.
- Against 1.d4: 1...d5 in 13 of 20 games (Queen's Pawn Game), scoring 65%.
- Weak spot: Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack as Black, only 25% in 4 games.
- Comfort zone: Rat Defense: English Rat as Black, 83% in 3 games.
- By opponent strength: 30% against higher-rated players, 64% against lower-rated.
Based on 86 over-the-board games (9 classical). 46 with White (39%), 40 with Black (56%).
Openings as White
First move
| 1.d4 | 45 | 40% |
| 1.Nf3 | 1 | 0% |
Most played
| Opening | Games | Score |
|---|---|---|
| Trompowsky Attack | 9 | 56% |
| Queen's Pawn Game: Colle System | 9 | 61% |
| Queen's Pawn Game: Zukertort Variation | 5 | 60% |
| East Indian Defense | 3 | 33% |
| Queen's Pawn Game: Colle System, Anti-Colle | 2 | 0% |
Openings as Black
Against 1.e4 (16 games)
| 1...c5 Sicilian Defense | 14 | 43% |
| 1...a6 St. George Defense | 1 | 100% |
| 1...d6 Pirc Defense | 1 | 100% |
Against 1.d4 (20 games)
| 1...d5 Queen's Pawn Game | 13 | 65% |
| 1...d6 Queen's Pawn Game | 6 | 67% |
| 1...Nf6 Indian Defense | 1 | 100% |
Most played
| Opening | Games | Score |
|---|---|---|
| Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | 4 | 25% |
| Rat Defense: English Rat | 3 | 83% |
| Queen's Gambit Declined: Chigorin Defense, Main Line | 2 | 50% |
| Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | 2 | 25% |
| Slav Defense: Czech Variation, Krause Attack | 2 | 50% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2026-08-20 | Wolfgang Humer (2051) Oberbank Challenger Open 2026 | L |
| 2026-08-18 | Chenshan Wu (2064) Oberbank Challenger Open 2026 | L |
| 2026-08-17 | Guenther Huber (1973) Oberbank Challenger Open 2026 | W |
| 2026-08-16 | Rene Szvetits (2032) Oberbank Challenger Open 2026 | L |
| 2026-08-15 | Taliesin Ertl (1942) Oberbank Challenger Open 2026 | W |
| 2026-06-07 | Tarun Kanyamarala (2426) 16. Rheinland-Pfalz Open | L |
| 2026-06-06 | Jakob Hentze (1927) 16. Rheinland-Pfalz Open | W |
| 2026-06-06 | Dimitrij Konstantinowskij (1980) 16. Rheinland-Pfalz Open | W |
| 2026-06-05 | Rajit Majumdar (2019) 16. Rheinland-Pfalz Open | ½ |
| 2026-06-04 | Tobias Faulhaber (1902) 16. Rheinland-Pfalz Open | W |
Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.