Prepare against Aaron Noah Koellner
CM · DEU · World #8,182 classical · FIDE ID 12993085
When preparing against Aaron Noah Koellner, expect 1.d4 in 98% of White games. Against 1.e4 the reply is 1...c5 (86% of games); against 1.d4, 1...d5 (48%). Lowest win rate among frequent openings: King's Indian Defense as White, 13.6% over 22 games.
Our database contains 460 games by Aaron Noah Koellner, covering Dec 2014 to Aug 2026. Below you'll find Aaron Noah Koellner's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Aaron Noah Koellner before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 2,202 | 2,275 | Mar 2020 |
| Rapid | 2,115 | 2,115 | Aug 2026 |
| Blitz | 2,134 | 2,160 | Jul 2023 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 460 | 173 | 79 | 208 | 37.6% |
| As White | 232 | 82 | 43 | 107 | 35.3% |
| As Black | 228 | 91 | 36 | 101 | 39.9% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Aaron Noah Koellner's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Aaron Noah Koellner's side.
First moves as White (232 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 227 | 97.8% | 44.5% |
| Nf3 | 3 | 1.3% | 16.7% |
| h4 | 1 | 0.4% | 100.0% |
| e4 | 1 | 0.4% | 100.0% |
Main lines as White
- 1.d4 — 98% of White games, 44.5% score
- …Nf6 (48% of these games) — Koellner usually continues Nf3 (41.8% score)
- …d5 (37% of these games) — Koellner usually continues Nf3 (50.0% score)
- …e6 (5% of these games) — Koellner usually continues Nf3 (40.9% score)
- 1.Nf3 — 1% of White games, 16.7% score
- …d5 (33% of these games) — Koellner usually continues e3 (0.0% score)
- …c5 (33% of these games) — Koellner usually continues e3 (50.0% score)
- …g6 (33% of these games) — Koellner usually continues d4 (0.0% score)
As Black against 1.e4 (104 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 89 | 85.6% | 44.9% |
| d6 | 12 | 11.5% | 41.7% |
| a6 | 1 | 1.0% | 100.0% |
| h5 | 1 | 1.0% | 100.0% |
| e5 | 1 | 1.0% | 0.0% |
As Black against 1.d4 (85 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 41 | 48.2% | 43.9% |
| d6 | 19 | 22.4% | 63.2% |
| Nf6 | 18 | 21.2% | 47.2% |
| c5 | 7 | 8.2% | 71.4% |
Aaron Noah Koellner's chess games
All 460 games by Aaron Noah Koellner in the Chess.ceo database (Dec 2014 - Aug 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 173 wins, 79 draws, 208 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A45 | Trompowsky Attack | 42 | 16/10/16 | 38.1% |
| D04 | Colle System | 39 | 14/7/18 | 35.9% |
| D05 | Indian Defense | 34 | 13/6/15 | 38.2% |
| D00 | London System | 23 | 9/3/11 | 39.1% |
| D02 | Queen's Pawn Game | 23 | 8/0/15 | 34.8% |
| D02 | King's Indian Defense | 22 | 3/9/10 | 13.6% |
| B06 | Modern Defense | 7 | 2/1/4 | 28.6% |
| D05 | Horwitz Defense | 7 | 2/1/4 | 28.6% |
| D00 | Queen's Pawn Game: Chigorin Variation | 7 | 4/1/2 | 57.1% |
| D10 | Slav Defense | 7 | 3/1/3 | 42.9% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B29 | Sicilian | 36 | 13/5/18 | 36.1% |
| B48 | Sicilian: Taimanov | 27 | 8/5/14 | 29.6% |
| D10 | Slav Defense | 22 | 5/4/13 | 22.7% |
| A55 | Indian Defense | 17 | 6/4/7 | 35.3% |
| A21 | Queen's Pawn Game | 12 | 4/5/3 | 33.3% |
| C41 | Philidor | 12 | 4/1/7 | 33.3% |
| A27 | English Opening: Reverse Sicilian | 11 | 5/0/6 | 45.5% |
| B23 | Sicilian: Closed | 10 | 6/1/3 | 60.0% |
| D02 | London System | 9 | 7/1/1 | 77.8% |
| A43 | Benoni Defense | 8 | 5/1/2 | 62.5% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Feb 2020 | Jaroslaw Krassowizkij | 2,465 | 11th Pfalz Open A | D10 |
| May 2023 | Loic Travadon | 2,458 | Titled Tue Early | C41 |
| Oct 2023 | Viktor Dmitrenko | 2,395 | Titled Tue Early | B52 |
| Sep 2021 | Marc Morgunov | 2,386 | Baden-Baden Swiss 1st | C41 |
| Sep 2024 | Le Thao Nguyen Pham | 2,380 | Titled Tue Early | D02 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2026 | 68 | 25.5 | 2,090 |
| 21st ch-EU | 2021 | 11 | 5 | 1,921 |
| Helsingor Xtracon Open | 2018 | 10 | 4.5 | 1,752 |
| Berlin Radtke Memorial Open | 2023 | 9 | 4 | 2,017 |
| 1st Sousse BICA Open | 2021 | 9 | 5.5 | 2,058 |
| 44th Dortmund Sparkassen Open B | 2016 | 9 | 7 | 2,016 |
| Baden-Baden Swiss 1st | 2021 | 9 | 4.5 | 2,261 |
| Bad Soden Open U18 | 2019 | 9 | 6 | 2,076 |
Interactive opening tree from all 460 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Aaron Noah Koellner's chess games?
460 games by Aaron Noah Koellner, from Dec 2014 to Aug 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Aaron Noah Koellner has played.
What does Aaron Noah Koellner play on the first move as White?
Across 232 games with White in our database, Aaron Noah Koellner opens with 1.d4 (98% of games), 1.Nf3 (1% of games), 1.h4 (0% of games). Against 1.e4 as Black, Aaron Noah Koellner answers 1...c5 (86% of games), 1...d6 (12% of games), 1...a6 (1% of games). Against 1.d4: 1...d5 (48% of games), 1...d6 (22% of games), 1...Nf6 (21% of games).
What openings does Aaron Noah Koellner play as White?
As White, Aaron Noah Koellner's most-played openings in our database are: Trompowsky Attack (42 games, 38.1% win rate); Colle System (39 games, 35.9% win rate); Indian Defense (34 games, 38.2% win rate). The full breakdown of 232 games with White is in the table above.
What openings does Aaron Noah Koellner play as Black?
As Black, Aaron Noah Koellner most often plays: Sicilian (36 games, 36.1% win rate); Sicilian: Taimanov (27 games, 29.6% win rate); Slav Defense (22 games, 22.7% win rate). See the table above for the top ten Black openings across 228 games.
What is Aaron Noah Koellner's FIDE rating?
Aaron Noah Koellner is currently rated 2,202 in classical chess, 2,115 in rapid and 2,134 in blitz. Peak classical rating: 2,275 (Mar 2020).
How many games has Aaron Noah Koellner played?
Our database contains 460 games by Aaron Noah Koellner, covering Dec 2014 to Aug 2026. Overall record: 173 wins, 79 draws, 208 losses (37.6% win rate).
How do I prepare against Aaron Noah Koellner?
460 games by Aaron Noah Koellner reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.