Koen Ten Katen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| NED-ch U16 op | 08/07/2000 | 0 | Netherlands |
| NED U16 op | ??/??/1999 | 0 | Netherlands |
| Hengelo U14 op | ??/??/1998 | 26 | Netherlands |
| Hengelo op U14 | ??/??/1997 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C54 | Giuoco Piano | 5 games |
| C02 | French, advance variation | 3 games |
| D36 | Queen's Gambit Declined, exchange, positional line, 6.Qc2 | 1 games |
| D38 | Queen's Gambit Declined, Ragozin variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B08 | Pirc, classical (two knights) system | 3 games |
| B84 | Sicilian, Scheveningen (Paulsen), classical variation | 2 games |
| B07 | Pirc defence | 2 games |
| A81 | Dutch defence | 1 games |


Netherlands