| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 251. H Grooten vs D de Vreugt |
| 1-0 | 64 | 2000 | Dutch Championship | D10 Queen's Gambit Declined Slav |
| 252. Van der Wiel vs H Grooten |
| ½-½ | 27 | 2000 | Dutch Championship | B12 Caro-Kann Defense |
| 253. H Grooten vs M Bosboom |
| 0-1 | 34 | 2000 | Dutch Championship | A50 Queen's Pawn Game |
| 254. D Reinderman vs H Grooten |
| ½-½ | 45 | 2000 | Dutch Championship | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 255. Fritz vs H Grooten |
| 1-0 | 57 | 2000 | Dutch Championship | A44 Old Benoni Defense |
| 256. H Grooten vs Tiviakov |
| 0-1 | 62 | 2000 | Dutch Championship | E17 Queen's Indian |
| 257. Van der Sterren vs H Grooten |
| 1-0 | 70 | 2000 | Dutch Championship | A46 Queen's Pawn Game |
| 258. H Grooten vs J Piket |
| 0-1 | 27 | 2000 | Dutch Championship | D44 Queen's Gambit Declined Semi-Slav |
| 259. E van den Doel vs H Grooten |
| 1-0 | 30 | 2000 | Dutch Championship | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 260. H Grooten vs Nijboer |
| ½-½ | 61 | 2000 | Dutch Championship | D80 Grunfeld |
| 261. H Grooten vs Landa |
| 0-1 | 28 | 2001 | Cappelle Open | A10 English |
| 262. H Grooten vs A Shneider |
| ½-½ | 39 | 2001 | Cappelle Open | E12 Queen's Indian |
| 263. R Janssen vs H Grooten |
| ½-½ | 53 | 2001 | NED-ch sf | A15 English |
| 264. H Grooten vs R Janssen |
| 0-1 | 35 | 2001 | NED-ch sf | E17 Queen's Indian |
| 265. H Grooten vs M Wunnink |
| 1-0 | 42 | 2001 | Amsterdam Lost Boys Open | A34 English, Symmetrical |
| 266. H Grooten vs E van den Doel |
| 0-1 | 51 | 2001 | Amsterdam Lost Boys Open | D29 Queen's Gambit Accepted, Classical |
| 267. M Erwich vs H Grooten |
| 0-1 | 29 | 2001 | Amsterdam Lost Boys Open | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 268. P Tregubov vs H Grooten |
| 1-0 | 33 | 2001 | Amsterdam Lost Boys Open | E15 Queen's Indian |
| 269. H Grooten vs A Bachofner |
| 0-1 | 53 | 2001 | Amsterdam Lost Boys Open | A90 Dutch |
| 270. J Mellegers vs H Grooten |
| 0-1 | 42 | 2001 | Amsterdam Lost Boys Open | A15 English |
| 271. H Grooten vs R Witt |
| 1-0 | 29 | 2001 | Amsterdam Lost Boys Open | D07 Queen's Gambit Declined, Chigorin Defense |
| 272. L'Ami vs H Grooten |
 | 1-0 | 63 | 2001 | Amsterdam Lost Boys Open | B18 Caro-Kann, Classical |
| 273. H Grooten vs A Riemens |
| 1-0 | 39 | 2001 | Amsterdam Lost Boys Open | A61 Benoni |
| 274. H Grooten vs Milov |
| ½-½ | 53 | 2001 | 1st Chess Week | E92 King's Indian |
| 275. B Filipovic vs H Grooten |
| 0-1 | 24 | 2001 | 1st Chess Week | B12 Caro-Kann Defense |
Kibitzing
