FIDE ID:
Guillaume Sermier
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| TCh-SUI 2019 | 03/10/2019 | 2360 |  Switzerland |
| TCh-SUI 2018 | 03/25/2018 | 2375 | Switzerland |
| Coupe de France 2017 | 06/24/2017 | 2343 |  France |
| TCh-SUI 2017 | 03/19/2017 | 2349 | Switzerland |
Guillaume Sermier Repertoire with White pieces (most played)
| ECO | Opening | Games |
| C18 | French, Winawer, advance variation | 9 games |
| A31 | English, symmetrical, Benoni formation | 6 games |
| B06 | Robatsch (modern) defence | 6 games |
| B33 | Sicilian defence | 6 games |
Guillaume Sermier Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| C02 | French, advance variation | 8 games |
| D06 | Queen's Gambit | 7 games |
| B51 | Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack | 5 games |
| C07 | French, Tarrasch, open variation | 5 games |
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