Spain
Male
FIDE ID:
Gregorio Sierra Bermejo
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Patrimon op 2nd | 10/07/2007 | 1630 |  Spain |
| Madrid Moratalaz op | 09/15/2007 | 2012 | Spain |
| Collado Villalba op 24th | 08/23/2007 | 1930 | Spain |
Gregorio Sierra Bermejo Repertoire with White pieces (most played)
| ECO | Opening | Games |
| D79 | Neo-Gruenfeld, 6.O-O, main line | 1 games |
| A24 | English, Bremen system with ...g6 | 1 games |
| A10 | English opening | 1 games |
| A28 | English, four knights system | 1 games |
Gregorio Sierra Bermejo Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| E65 | King's Indian, fianchetto, Yugoslav, 7.O-O | 1 games |
| D21 | Queen's Gambit Accepted, 3.Nf3 | 1 games |
| D20 | Queen's gambit accepted | 1 games |
| C42 | Petrov's defence | 1 games |
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