Prepare against Jean-Fabien Decosse
CM · France · World #13,400 classical · FIDE ID 622583
When preparing against Jean-Fabien Decosse, expect 1.d4 in 94% of White games. Against 1.e4 the reply is 1...d6 (49% of games); against 1.d4, 1...Nf6 (33%). Lowest win rate among frequent openings: Philidor as Black, 17.6% over 17 games.
Our database contains 136 games by Jean-Fabien Decosse, covering Apr 2003 to Jul 2026. Below you'll find Jean-Fabien Decosse's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jean-Fabien Decosse 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 | 2,123 | 2,245 | Oct 2007 |
| Rapid | 2,199 | 2,244 | Feb 2014 |
| Blitz | 2,075 | 2,203 | Dec 2014 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 136 | 40 | 37 | 59 | 29.4% |
| As White | 64 | 24 | 15 | 25 | 37.5% |
| As Black | 72 | 16 | 22 | 34 | 22.2% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jean-Fabien Decosse's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jean-Fabien Decosse's side.
First moves as White (64 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 60 | 93.8% | 51.7% |
| Nf3 | 4 | 6.3% | 12.5% |
Main lines as White
- 1.d4 — 94% of White games, 51.7% score
- …Nf6 (48% of these games) — Decosse usually continues c4 (48.2% score)
- …d5 (27% of these games) — Decosse usually continues c4 (56.3% score)
- …e6 (10% of these games) — Decosse usually continues c4 (50.0% score)
- 1.Nf3 — 6% of White games, 12.5% score
- …Nf6 (50% of these games) — Decosse usually continues b3 (0.0% score)
- …d5 (25% of these games) — Decosse usually continues c4 (50.0% score)
- …c5 (25% of these games) — Decosse usually continues e3 (0.0% score)
As Black against 1.e4 (39 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d6 | 19 | 48.7% | 39.5% |
| g6 | 11 | 28.2% | 45.5% |
| c6 | 9 | 23.1% | 66.7% |
As Black against 1.d4 (24 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 8 | 33.3% | 12.5% |
| d6 | 7 | 29.2% | 21.4% |
| g6 | 7 | 29.2% | 21.4% |
| c6 | 2 | 8.3% | 75.0% |
Jean-Fabien Decosse's chess games
All 136 games by Jean-Fabien Decosse in the Chess.ceo database (Apr 2003 - 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: 40 wins, 37 draws, 59 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D36 | Indian Defense | 11 | 5/3/3 | 45.5% |
| A65 | Benoni Defense | 6 | 4/0/2 | 66.7% |
| D12 | Slav Defense | 6 | 2/0/4 | 33.3% |
| E32 | Nimzo-Indian: Classical Variation | 5 | 1/2/2 | 20.0% |
| E46 | Nimzo-Indian: Rubinstein System | 4 | 1/1/2 | 25.0% |
| D84 | Grünfeld Defense | 3 | 0/2/1 | 0.0% |
| A40 | Horwitz Defense | 3 | 1/1/1 | 33.3% |
| A51 | Budapest Defense | 2 | 1/1/0 | 50.0% |
| E73 | King's Indian Defense: Averbakh System | 2 | 1/1/0 | 50.0% |
| A80 | Dutch Defense | 2 | 1/1/0 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B06 | Modern Defense | 20 | 4/8/8 | 20.0% |
| C41 | Philidor | 17 | 3/5/9 | 17.6% |
| A54 | Indian Defense | 9 | 2/3/4 | 22.2% |
| B06 | Caro-Kann | 9 | 4/4/1 | 44.4% |
| B06 | Pirc Defense | 3 | 2/0/1 | 66.7% |
| E11 | Bogo-Indian Defense | 3 | 0/0/3 | 0.0% |
| A30 | English Opening | 2 | 0/0/2 | 0.0% |
| A42 | Queen's Pawn Game | 2 | 1/1/0 | 50.0% |
| A45 | Trompowsky Attack | 1 | 0/0/1 | 0.0% |
| E13 | Nimzo-Indian: Classical Variation | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Dec 2022 | Valentin Dragnev | 2,556 | ch-EU Rapid | E46 |
| May 2017 | Thal Abergel | 2,457 | FRA-chT Top 12 | A65 |
| Dec 2011 | Victor Stephan | 2,313 | chT1A-FRA 1112 | C41 |
| Mar 2009 | Nino Maisuradze | 2,308 | chT2-FRA West 0809 | A42 |
| Jun 2012 | Georges Leruste | 2,270 | Le Port Marly Paribas Blitz Open | A96 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| chT2-FRA West 0708 | 2008 | 11 | 5 | 2,208 |
| chT2-FRA West 0809 | 2009 | 9 | 4.5 | 2,259 |
| FRA-chT Top 12 | 2017 | 9 | 1.5 | 2,244 |
| Le Port Marly Paribas Blitz Open | 2012 | 9 | 4.5 | 2,244 |
| Agneaux St Lo Masters A | 2001 | 9 | 6.5 | 2,329 |
| 27th Avoine Open | 2012 | 8 | 5 | 2,264 |
| Reykjavik Kvika Open | 2022 | 8 | 4 | 2,053 |
| Reykjavik Open 2026 | 2026 | 8 | 4.5 | 2,028 |
Interactive opening tree from all 136 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jean-Fabien Decosse's chess games?
136 games by Jean-Fabien Decosse, from Apr 2003 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 Jean-Fabien Decosse has played.
What does Jean-Fabien Decosse play on the first move as White?
Across 64 games with White in our database, Jean-Fabien Decosse opens with 1.d4 (94% of games), 1.Nf3 (6% of games). Against 1.e4 as Black, Jean-Fabien Decosse answers 1...d6 (49% of games), 1...g6 (28% of games), 1...c6 (23% of games). Against 1.d4: 1...Nf6 (33% of games), 1...d6 (29% of games), 1...g6 (29% of games).
What openings does Jean-Fabien Decosse play as White?
As White, Jean-Fabien Decosse's most-played openings in our database are: Indian Defense (11 games, 45.5% win rate); Benoni Defense (6 games, 66.7% win rate); Slav Defense (6 games, 33.3% win rate). The full breakdown of 64 games with White is in the table above.
What openings does Jean-Fabien Decosse play as Black?
As Black, Jean-Fabien Decosse most often plays: Modern Defense (20 games, 20.0% win rate); Philidor (17 games, 17.6% win rate); Indian Defense (9 games, 22.2% win rate). See the table above for the top ten Black openings across 72 games.
What is Jean-Fabien Decosse's FIDE rating?
Jean-Fabien Decosse is currently rated 2,123 in classical chess, 2,199 in rapid and 2,075 in blitz. Peak classical rating: 2,245 (Oct 2007).
How many games has Jean-Fabien Decosse played?
Our database contains 136 games by Jean-Fabien Decosse, covering Apr 2003 to Jul 2026. Overall record: 40 wins, 37 draws, 59 losses (29.4% win rate).
How do I prepare against Jean-Fabien Decosse?
136 games by Jean-Fabien Decosse 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.