Constantin Marek
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| FRA-chT 0102 U18 | 10/??/2001 | 1633 | France |
| FRA-chT 0001 U18 | ??/??/2000 | 1258 | France |
| FRA-chT 0001 U18 | 11/??/2000 | 326 | France |
| FRA-chT 9900 U18 | ??/??/1999 | 299 | France |
Most Played Openings as White
| ECO | Opening | Games |
| C57 | Two knights defence | 3 games |
| C55 | Two knights defence | 3 games |
| C01 | French, exchange variation | 2 games |
| B01 | Scandinavian (centre counter) defence | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C02 | French, advance variation | 7 games |
| A60 | Benoni defence | 2 games |
| C15 | French, Winawer (Nimzovich) variation | 2 games |
| C10 | French, Paulsen variation | 2 games |


France