Pieters Lourens De Haseth
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| EU-ch U20 Niemeyer 3rd | 12/28/1964 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C85 | Ruy Lopez, Exchange variation doubly deferred (DERLD) | 1 games |
| B74 | Sicilian, dragon, classical, 9.Nb3 | 1 games |
| C10 | French, Paulsen variation | 1 games |
| B83 | Sicilian, Scheveningen, 6.Be2 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B17 | Caro-Kann, Steinitz variation | 2 games |
| B13 | Caro-Kann, exchange variation | 1 games |
| B11 | Caro-Kann, two knights, 3...Bg4 | 1 games |
| E80 | King's Indian, Saemisch variation | 1 games |


Netherlands