Piet Boonen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Nettetal Chessgate op | 08/07/2004 | 1726 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| B00 | King's pawn opening | 2 games |
| B38 | Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3 | 1 games |
| D02 | Queen's pawn game | 1 games |
| B09 | Pirc, Austrian attack | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A25 | English, Sicilian reversed | 1 games |
| D79 | Neo-Gruenfeld, 6.O-O, main line | 1 games |
| E08 | Catalan, closed, 7.Qc2 | 1 games |
| B33 | Sicilian defence | 1 games |
Netherlands
FIDE ID:

Germany