Jan Jaap Groot
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Haarlem AKN | ??/??/1994 | 626 | Netherlands |
| NED-ch U20 | ??/??/1994 | 64 | Netherlands |
| Hengelo op U16 | ??/??/1993 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| A45 | Queen's pawn game | 2 games |
| A40 | Queen's pawn | 1 games |
| D50 | Queen's Gambit Declined, 4.Bg5 | 1 games |
| A41 | Queen's Pawn | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D02 | Queen's pawn game | 1 games |
| C13 | French, classical | 1 games |
| A03 | Bird's opening | 1 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 1 games |


Netherlands