Male
FIDE ID:
Guillermo Arias Boo
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| ch-CAT 2026 | 05/09/2026 | 2332 |  Spain |
| TCh-CAT GpA Final 2023 | 03/18/2023 | 2232 | Spain |
| TCh-CAT Gp1 2023 | 01/21/2023 | 2236 | Spain |
| TCh-CAT Final 2022 | 03/26/2022 | 2329 | Spain |
Most Played Openings as White
| ECO | Opening | Games |
| B73 | Sicilian, dragon, classical, 8.O-O | 3 games |
| C19 | French, Winawer, advance, 6...Ne7 | 3 games |
| B84 | Sicilian, Scheveningen (Paulsen), classical variation | 2 games |
| C47 | Four knights, Scotch variation | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C66 | Ruy Lopez, Berlin defence, 4.O-O, d6 | 5 games |
| C65 | Ruy Lopez, Berlin defence | 5 games |
| D36 | Queen's Gambit Declined, exchange, positional line, 6.Qc2 | 4 games |
| A57 | Benko gambit | 3 games |
