Mario Nicolas Villanueva
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| LNA Puma Cup | 08/11/2007 | 1800 | Argentina |
| Avellaneda op | 05/09/2007 | 1734 | Argentina |
| Villa Ballester op 56th | 01/03/2006 | 1337 | Argentina |
| ARG-chT Magistral | 05/24/2005 | 2250 | Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| B52 | Sicilian, Canal-Sokolsky attack, 3...Bd7 | 4 games |
| B06 | Robatsch (modern) defence | 3 games |
| D85 | Gruenfeld, exchange variation | 2 games |
| D55 | Queen's Gambit Declined, 6.Nf3 | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D06 | Queen's Gambit | 5 games |
| C42 | Petrov's defence | 3 games |
| C10 | French, Paulsen variation | 2 games |
| C47 | Four knights, Scotch variation | 2 games |


Argentina