Jacob Akkerboom
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Hengelo U20 op | 08/??/2005 | 1853 | Netherlands |
| Stork Young Masters op | 08/??/2004 | 518 | Netherlands |
| Hengelo U16 op | 08/04/2003 | 90 | Netherlands |
| NED-ch U16 | 04/??/2003 | 335 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| D52 | Queen's Gambit Declined | 4 games |
| E85 | King's Indian, Saemisch, orthodox variation | 4 games |
| D50 | Queen's Gambit Declined, 4.Bg5 | 2 games |
| E12 | Queen's Indian defence | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B22 | Sicilian, Alapin's variation (2.c3) | 5 games |
| C01 | French, exchange variation | 3 games |
| C02 | French, advance variation | 3 games |
| B80 | Sicilian, Scheveningen variation | 2 games |


Netherlands