Ratings
2007-08-05: 39th Dutch Othello Open(Netherlands)
| ANDRIANI Bintsa | won against | BOS Arjen |
| BOS Arjen | lost to | ORTIZ George |
| BOS Arjen | lost to | HOETJES Tim |
| VISSER Erik | lost to | BOS Arjen |
| BOS Arjen | lost to | HOBO Roel |
| VAN GIMST Anja | won against | BOS Arjen |
2006-01-22: 29th Dutch Othello Open(Netherlands)
| BOS Arjen | lost to | GAYET Surya |
| SWANINK Daniel | won against | BOS Arjen |
| BOS Arjen | won against | JONGKIND Robbert |
| PRASEPTYO Linda | won against | BOS Arjen |
| BOS Arjen | lost to | LUBBERS Lammie |
| VAN GIMST Anja | lost to | BOS Arjen |
| BOS Arjen | won against | KORTENDIJK Bauke |
2005-03-26 → 2005-03-27: EGP Bussum(Netherlands)
2005-02-27: 25th Dutch Othello Open(Netherlands)
| BRIGHTWELL Graham | won against | BOS Arjen |
| BOS Arjen | won against | BUDDING Theo |
| BOS Arjen | lost to | MADRONA Mario |
| VAN HEERE Mark | won against | BOS Arjen |
| BOS Arjen | won against | VAN GIMST Simone |
| VAN DEN BERG Erwin | won against | BOS Arjen |
| KRACZYK Roman | won against | BOS Arjen |
| BOS Arjen | won against | SNEEK Marcel |
| FRANSEN Martin | 32-32 | BOS Arjen |
| BOS Arjen | won against | VERWEIJ Dennis |
| VAN GIMST Anja | won against | BOS Arjen |
| TANG Kwokwing | lost to | BOS Arjen |
| VAN GIMST Simone | lost to | BOS Arjen |
| VAN GIMST Anja | lost to | BOS Arjen |
| BOS Arjen | lost to | TOMEI Robin |
| HOETJES Tim | lost to | BOS Arjen |
| BOS Arjen | lost to | FRANSEN Martin |
| BOS Arjen | won against | HOBO Roel |
| SCHOTTE Tom | won against | BOS Arjen |
| BOS Arjen | lost to | PEPERKAMP Marcel |
2003-09-21: 5th Open Dutch Othello Championships(Netherlands)
| BOS Arjen | won against | DE BOER Pieter |
| VAN GRONINGEN Tim | lost to | BOS Arjen |
| BOS Arjen | won against | ANDRIANI Bintsa |
| AUBROECK Patrick | won against | BOS Arjen |
| BOS Arjen | lost to | SEITS Roy |
| GAYET Surya | won against | BOS Arjen |
| BOS Arjen | won against | TJASSENS Dennis |