Diederik Royers
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Apeldoorn op | 09/??/2001 | 1196 | Netherlands |
| Staunton CC Albin Theme op | 09/07/2001 | 367 | Netherlands |
| Vlissingen HZ op 4th | 07/29/2000 | 887 | Netherlands |
| Soest op | 06/02/2000 | 425 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| D03 | Torre attack (Tartakower variation) | 7 games |
| A40 | Queen's pawn | 2 games |
| C33 | King's gambit accepted | 2 games |
| B33 | Sicilian defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 3 games |
| B84 | Sicilian, Scheveningen (Paulsen), classical variation | 1 games |
| D90 | Gruenfeld, Three knights variation | 1 games |
| B24 | Sicilian, closed | 1 games |


Netherlands