Prepare against Alf Ertelt
DEU · World #66,306 classical · FIDE ID 12971510
When preparing against Alf Ertelt, expect 1.d4 in 92% of White games. Against 1.e4 the reply is 1...e6 (93% of games); against 1.d4, 1...Nf6 (89%).
Our database contains 49 games by Alf Ertelt, covering Jul 2014 to Jul 2026. Below you'll find Alf Ertelt's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Alf Ertelt 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 | 1,834 | 1,850 | Jun 2026 |
| Blitz | 1,807 | 1,808 | Mar 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 49 | 20 | 9 | 20 | 40.8% |
| As White | 24 | 6 | 6 | 12 | 25.0% |
| As Black | 25 | 14 | 3 | 8 | 56.0% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Alf Ertelt's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Alf Ertelt's side.
First moves as White (24 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 22 | 91.7% | 36.4% |
| e4 | 2 | 8.3% | 50.0% |
Main lines as White
- 1.d4 — 92% of White games, 36.4% score
- …Nf6 (41% of these games) — Ertelt usually continues c4 (20.0% score)
- …d5 (36% of these games) — Ertelt usually continues c4 (40.0% score)
- …e6 (18% of these games) — Ertelt usually continues Bf4 (25.0% score)
- 1.e4 — 8% of White games, 50.0% score
- …e6 (50% of these games) — Ertelt usually continues d4 (100.0% score)
- …d5 (50% of these games) — Ertelt usually continues exd5 (0.0% score)
As Black against 1.e4 (14 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 13 | 92.9% | 50.0% |
| Nf6 | 1 | 7.1% | 100.0% |
As Black against 1.d4 (9 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 8 | 88.9% | 75.0% |
| d5 | 1 | 11.1% | 0.0% |
Alf Ertelt's chess games
All 49 games by Alf Ertelt in the Chess.ceo database (Jul 2014 - Jul 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: 20 wins, 9 draws, 20 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D00 | London System | 5 | 1/2/2 | 20.0% |
| D37 | Indian Defense | 4 | 1/0/3 | 25.0% |
| A44 | Benoni Defense | 3 | 1/1/1 | 33.3% |
| E83 | King's Indian: Sämisch | 2 | 0/1/1 | 0.0% |
| E38 | Nimzo-Indian: Classical Variation | 1 | 0/0/1 | 0.0% |
| D07 | Queen's Gambit | 1 | 0/0/1 | 0.0% |
| A84 | Queen's Gambit Declined | 1 | 1/0/0 | 100.0% |
| D02 | Queen's Pawn Game | 1 | 0/0/1 | 0.0% |
| B01 | Scandinavian Defense: Modern Variation | 1 | 0/0/1 | 0.0% |
| D18 | Slav Defense | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C06 | French: Tarrasch Variation | 5 | 3/1/1 | 60.0% |
| A48 | King's Indian Defense | 3 | 2/0/1 | 66.7% |
| C01 | French Defense | 3 | 1/0/2 | 33.3% |
| C11 | French: Classical Variation | 2 | 1/0/1 | 50.0% |
| E94 | King's Indian Defense: Orthodox Variation | 2 | 1/1/0 | 50.0% |
| C02 | French: Advance Variation | 2 | 1/0/1 | 50.0% |
| A48 | Indian Defense | 2 | 1/1/0 | 50.0% |
| D37 | Semi-Slav Defense | 1 | 0/0/1 | 0.0% |
| A03 | Bird's opening | 1 | 1/0/0 | 100.0% |
| E72 | English Opening | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| May 2016 | Martin Schmuck | 1,931 | ch-Hamburg cand | C03 |
| May 2018 | Jens-Erik Rudolph | 1,930 | ch-Hamburg MB | A44 |
| May 2016 | Mathias Von Elsner | 1,869 | ch-Hamburg cand | D00 |
| Jun 2014 | Erhard Cassens | 1,850 | ch-Hamburg MB | A45 |
| Jun 2014 | Joern Behrensen Senfft | 1,767 | ch-Hamburg MB | E61 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-Hamburg MB | 2018 | 25 | 8.5 | 1,707 |
| ch-Hamburg A-Klasse | 2013 | 9 | 8.5 | 1,890 |
| ch-Hamburg cand | 2016 | 9 | 4 | 1,782 |
| 4th Hamburg CC Easter Open | 2018 | 6 | 3.5 | 1,818 |
Interactive opening tree from all 49 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Alf Ertelt's chess games?
49 games by Alf Ertelt, from Jul 2014 to Jul 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 Alf Ertelt has played.
What does Alf Ertelt play on the first move as White?
Across 24 games with White in our database, Alf Ertelt opens with 1.d4 (92% of games), 1.e4 (8% of games). Against 1.e4 as Black, Alf Ertelt answers 1...e6 (93% of games), 1...Nf6 (7% of games). Against 1.d4: 1...Nf6 (89% of games), 1...d5 (11% of games).
What openings does Alf Ertelt play as White?
As White, Alf Ertelt's most-played openings in our database are: London System (5 games, 20.0% win rate); Indian Defense (4 games, 25.0% win rate); Benoni Defense (3 games, 33.3% win rate). The full breakdown of 24 games with White is in the table above.
What openings does Alf Ertelt play as Black?
As Black, Alf Ertelt most often plays: French: Tarrasch Variation (5 games, 60.0% win rate); King's Indian Defense (3 games, 66.7% win rate); French Defense (3 games, 33.3% win rate). See the table above for the top ten Black openings across 25 games.
What is Alf Ertelt's FIDE rating?
Alf Ertelt is currently rated 1,834 in classical chess and 1,807 in blitz. Peak classical rating: 1,850 (Jun 2026).
How many games has Alf Ertelt played?
Our database contains 49 games by Alf Ertelt, covering Jul 2014 to Jul 2026. Overall record: 20 wins, 9 draws, 20 losses (40.8% win rate).
How do I prepare against Alf Ertelt?
49 games by Alf Ertelt 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.