Prepare against Stefan Osten
DEU · World #78,986 classical · FIDE ID 12987700
When preparing against Stefan Osten, expect 1.c4 in 49% of White games. Against 1.e4 the reply is 1...e5 (93% of games); against 1.d4, 1...Nf6 (58%).
Our database contains 72 games by Stefan Osten, covering May 2017 to Jul 2026. Below you'll find Stefan Osten's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Stefan Osten 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 | 1,793 | 1,818 | Nov 2024 |
| Rapid | 1,826 | 1,826 | Jul 2026 |
| Blitz | 1,801 | 1,801 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 72 | 16 | 34 | 22 | 22.2% |
| As White | 37 | 10 | 16 | 11 | 27.0% |
| As Black | 35 | 6 | 18 | 11 | 17.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Stefan Osten's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Stefan Osten's side.
First moves as White (37 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c4 | 18 | 48.6% | 38.9% |
| e4 | 15 | 40.5% | 63.3% |
| Nf3 | 4 | 10.8% | 37.5% |
Main lines as White
- 1.c4 — 49% of White games, 38.9% score
- …Nf6 (39% of these games) — Osten usually continues Nc3 (25.0% score)
- …c5 (22% of these games) — Osten usually continues g3 (50.0% score)
- …e6 (22% of these games) — Osten usually continues Nc3 (66.7% score)
- 1.e4 — 41% of White games, 63.3% score
- …e6 (33% of these games) — Osten usually continues d4 (60.0% score)
- …e5 (33% of these games) — Osten usually continues Nf3 (80.0% score)
- …c5 (20% of these games) — Osten usually continues Nf3 (33.3% score)
As Black against 1.e4 (15 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 14 | 93.3% | 50.0% |
| c5 | 1 | 6.7% | 100.0% |
As Black against 1.d4 (12 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 7 | 58.3% | 42.9% |
| d5 | 5 | 41.7% | 20.0% |
Stefan Osten's chess games
All 72 games by Stefan Osten in the Chess.ceo database (May 2017 - 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: 16 wins, 34 draws, 22 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A17 | English Opening | 11 | 2/4/5 | 18.2% |
| C01 | French: Exchange Variation | 4 | 1/3/0 | 25.0% |
| A36 | English Opening: Symmetrical | 3 | 1/1/1 | 33.3% |
| A31 | Sicilian | 3 | 0/2/1 | 0.0% |
| A25 | English Opening: Reverse Sicilian | 3 | 1/0/2 | 33.3% |
| A05 | Réti Opening | 3 | 1/0/2 | 33.3% |
| B06 | Modern Defense | 2 | 1/1/0 | 50.0% |
| C41 | Philidor | 2 | 1/1/0 | 50.0% |
| A91 | English Opening: Dutch Defense | 1 | 0/1/0 | 0.0% |
| A05 | Réti Opening: Spassky Variation | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C55 | Italian Game | 6 | 0/4/2 | 0.0% |
| C90 | Ruy Lopez: Morphy Defense | 4 | 2/2/0 | 50.0% |
| A22 | English Opening: Reverse Sicilian | 3 | 0/1/2 | 0.0% |
| C68 | Ruy Lopez: Exchange | 2 | 1/1/0 | 50.0% |
| E20 | Nimzo-Indian Defense | 2 | 0/1/1 | 0.0% |
| D00 | Queen's Pawn Game | 2 | 0/1/1 | 0.0% |
| E00 | Indian Defense: Seirawan Attack | 1 | 1/0/0 | 100.0% |
| D37 | Indian Defense | 1 | 0/0/1 | 0.0% |
| D02 | London System | 1 | 0/1/0 | 0.0% |
| D94 | Grünfeld Defense | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 1998 | Thomas Rondio | 1,834 | chH-Bahn | C90 |
| Oct 1999 | Peter Strauss | 1,802 | chT-Bahn | A13 |
| Oct 1998 | Manfred Gafke | 1,764 | chH-Bahn | A17 |
| Dec 2024 | Robert Ruetter | 1,586 | Krefeld Christmas Open | A07 |
| Sep 2004 | Andreas Altner | 1,559 | ch-Bahn HT | E00 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| chH-Bahn | 1998 | 24 | 12.5 | 1,779 |
| chT-Bahn | 1999 | 20 | 8 | 1,707 |
| chG-Bahn | 2000 | 8 | 4 | 1,595 |
| Krefeld Christmas Open | 2024 | 7 | 2.5 | 1,765 |
| ch-Bahn | 1996 | 7 | 3 | – |
| ch-Bahn HT | 2004 | 6 | 3 | 1,518 |
Interactive opening tree from all 72 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Stefan Osten's chess games?
72 games by Stefan Osten, from May 2017 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 Stefan Osten has played.
What does Stefan Osten play on the first move as White?
Across 37 games with White in our database, Stefan Osten opens with 1.c4 (49% of games), 1.e4 (41% of games), 1.Nf3 (11% of games). Against 1.e4 as Black, Stefan Osten answers 1...e5 (93% of games), 1...c5 (7% of games). Against 1.d4: 1...Nf6 (58% of games), 1...d5 (42% of games).
What openings does Stefan Osten play as White?
As White, Stefan Osten's most-played openings in our database are: English Opening (11 games, 18.2% win rate); French: Exchange Variation (4 games, 25.0% win rate); English Opening: Symmetrical (3 games, 33.3% win rate). The full breakdown of 37 games with White is in the table above.
What openings does Stefan Osten play as Black?
As Black, Stefan Osten most often plays: Italian Game (6 games, 0.0% win rate); Ruy Lopez: Morphy Defense (4 games, 50.0% win rate); English Opening: Reverse Sicilian (3 games, 0.0% win rate). See the table above for the top ten Black openings across 35 games.
What is Stefan Osten's FIDE rating?
Stefan Osten is currently rated 1,793 in classical chess, 1,826 in rapid and 1,801 in blitz. Peak classical rating: 1,818 (Nov 2024).
How many games has Stefan Osten played?
Our database contains 72 games by Stefan Osten, covering May 2017 to Jul 2026. Overall record: 16 wins, 34 draws, 22 losses (22.2% win rate).
How do I prepare against Stefan Osten?
72 games by Stefan Osten 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.