Prepare against Guillaume Pieroni
CM · France · World #8,356 classical · FIDE ID 627933
Our database contains 140 games by Guillaume Pieroni, covering Apr 2003 to Jul 2026. Below you'll find Guillaume Pieroni's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Guillaume Pieroni 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 | 2,198 | 2,244 | Jul 2007 |
| Rapid | 2,208 | 2,208 | Jul 2026 |
| Blitz | 2,216 | 2,216 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 140 | 41 | 43 | 56 | 29.3% |
| As White | 69 | 23 | 19 | 27 | 33.3% |
| As Black | 71 | 18 | 24 | 29 | 25.4% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Guillaume Pieroni's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Guillaume Pieroni's side.
First moves as White (69 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 67 | 97.1% | 47.0% |
| d4 | 2 | 2.9% | 50.0% |
Main lines as White
- 1.e4 — 97% of White games, 47.0% score
- …c5 (37% of these games) — Pieroni usually continues Nf3 (46.7% score)
- …e5 (25% of these games) — Pieroni usually continues d4 (40.0% score)
- …e6 (12% of these games) — Pieroni usually continues d4 (57.1% score)
- 1.d4 — 3% of White games, 50.0% score
- …d5 (100% of these games) — Pieroni usually continues c4 (50.0% score)
As Black against 1.e4 (33 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 30 | 90.9% | 43.3% |
| e5 | 2 | 6.1% | 25.0% |
As Black against 1.d4 (27 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 15 | 55.6% | 36.7% |
| e6 | 11 | 40.7% | 50.0% |
| d5 | 1 | 3.7% | 50.0% |
Guillaume Pieroni's chess games
All 140 games by Guillaume Pieroni 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: 41 wins, 43 draws, 56 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B20 | Sicilian | 19 | 6/9/4 | 31.6% |
| C22 | Center Game | 10 | 2/4/4 | 20.0% |
| C14 | French: Classical Variation | 3 | 2/1/0 | 66.7% |
| B06 | Modern Defense | 3 | 1/0/2 | 33.3% |
| B07 | Pirc Defense | 3 | 1/0/2 | 33.3% |
| B13 | Caro-Kann: Exchange Variation | 2 | 1/1/0 | 50.0% |
| B07 | Pirc Defense: Lion System | 2 | 0/0/2 | 0.0% |
| B03 | Alekhine Defense | 2 | 1/0/1 | 50.0% |
| C18 | French: Winawer Variation | 2 | 1/1/0 | 50.0% |
| C50 | Italian Game | 2 | 2/0/0 | 100.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E12 | Queen's Indian Defense | 8 | 1/3/4 | 12.5% |
| A46 | Indian Defense | 7 | 2/3/2 | 28.6% |
| C18 | French: Winawer Variation | 7 | 2/2/3 | 28.6% |
| C01 | French: Exchange Variation | 6 | 2/3/1 | 33.3% |
| C02 | French: Advance Variation | 5 | 2/2/1 | 40.0% |
| C05 | French: Tarrasch Variation | 5 | 0/2/3 | 0.0% |
| C00 | King's Indian Attack | 4 | 1/1/2 | 25.0% |
| C00 | French Defense | 4 | 2/0/2 | 50.0% |
| E01 | English Opening: Neo-Catalan | 3 | 2/0/1 | 66.7% |
| E13 | Nimzo-Indian Defense | 3 | 2/0/1 | 66.7% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Nov 2006 | Stephane Schabanel | 2,298 | chT1B-FRA 0607 | C18 |
| Apr 2008 | Bruno Marzolf | 2,252 | chT1B-FRA 0708 | C18 |
| Feb 2007 | Sylvain Ravot | 2,218 | chT1B-FRA 0607 | B23 |
| Feb 2007 | Fabrice Deschler | 2,168 | chT1B-FRA 0607 | E17 |
| Mar 2009 | Alexandre Marciniak | 2,161 | chT2-FRA South 0809 | B20 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-FRA U20 | 2007 | 16 | 9.5 | 2,223 |
| chT-FRA 0001 U18 | 2001 | 11 | 4.5 | 2,033 |
| chT-FRA U20 0203 | 2003 | 11 | 4.5 | 1,985 |
| chT-FRA U18 9798 | 1998 | 10 | 4.5 | 1,620 |
| chT2-FRA South 0809 | 2009 | 10 | 4 | 2,205 |
| chT1B-FRA 0607 | 2007 | 10 | 5.5 | 2,258 |
| chT1B-FRA 0708 | 2008 | 9 | 2.5 | 2,096 |
| chT2-FRA 0304a | 2004 | 7 | 4.5 | 2,181 |
Interactive opening tree from all 140 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Guillaume Pieroni's chess games?
140 games by Guillaume Pieroni, 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 Guillaume Pieroni has played.
What does Guillaume Pieroni play on the first move as White?
Across 69 games with White in our database, Guillaume Pieroni opens with 1.e4 (97% of games), 1.d4 (3% of games). Against 1.e4 as Black, Guillaume Pieroni answers 1...e6 (91% of games), 1...e5 (6% of games). Against 1.d4: 1...Nf6 (56% of games), 1...e6 (41% of games), 1...d5 (4% of games).
What openings does Guillaume Pieroni play as White?
As White, Guillaume Pieroni's most-played openings in our database are: Sicilian (19 games, 31.6% win rate); Center Game (10 games, 20.0% win rate); French: Classical Variation (3 games, 66.7% win rate). The full breakdown of 69 games with White is in the table above.
What openings does Guillaume Pieroni play as Black?
As Black, Guillaume Pieroni most often plays: Queen's Indian Defense (8 games, 12.5% win rate); Indian Defense (7 games, 28.6% win rate); French: Winawer Variation (7 games, 28.6% win rate). See the table above for the top ten Black openings across 71 games.
What is Guillaume Pieroni's FIDE rating?
Guillaume Pieroni is currently rated 2,198 in classical chess, 2,208 in rapid and 2,216 in blitz. Peak classical rating: 2,244 (Jul 2007).
How many games has Guillaume Pieroni played?
Our database contains 140 games by Guillaume Pieroni, covering Apr 2003 to Jul 2026. Overall record: 41 wins, 43 draws, 56 losses (29.3% win rate).
How do I prepare against Guillaume Pieroni?
140 games by Guillaume Pieroni 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.