| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 276. P Dittmar vs R Danz |
| 1-0 | 30 | 2007 | Liechtenstein Open | A15 English |
| 277. T Luther vs P Dittmar |
| 1-0 | 45 | 2007 | Liechtenstein Open | B12 Caro-Kann Defense |
| 278. P Dittmar vs C Kanonier |
| 1-0 | 54 | 2007 | Liechtenstein Open | A09 Reti Opening |
| 279. G Froewis vs P Dittmar |
| ½-½ | 16 | 2007 | Liechtenstein Open | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 280. P Dittmar vs H Kleinhenz |
| 1-0 | 43 | 2007 | Liechtenstein Open | A04 Reti Opening |
| 281. T Likavsky vs P Dittmar |
| 1-0 | 73 | 2007 | Liechtenstein Open | D52 Queen's Gambit Declined |
| 282. P Dittmar vs G Ballon |
| ½-½ | 28 | 2007 | Liechtenstein Open | A09 Reti Opening |
| 283. P Nusch vs P Dittmar |
| 0-1 | 30 | 2007 | Liechtenstein Open | B02 Alekhine's Defense |
| 284. P Dittmar vs Hort |
| ½-½ | 37 | 2007 | Liechtenstein Open | A08 King's Indian Attack |
| 285. M Ori vs P Dittmar |
| ½-½ | 31 | 2007 | Cesenatico Open | C03 French, Tarrasch |
| 286. J Aagaard vs P Dittmar |
| 1-0 | 36 | 2007 | Arco di Trento op-A | B13 Caro-Kann, Exchange |
| 287. U Capo Vidal vs P Dittmar |
| 1-0 | 37 | 2009 | Gibraltar Masters | E20 Nimzo-Indian |
| 288. P Dittmar vs P Obiamiwe |
| ½-½ | 57 | 2009 | Gibraltar Masters | A01 Nimzovich-Larsen Attack |
| 289. D Sedgwick vs P Dittmar |
| 0-1 | 53 | 2009 | Gibraltar Masters | C02 French, Advance |
| 290. P Dittmar vs A Aerni |
| 1-0 | 40 | 2009 | Gibraltar Masters | A01 Nimzovich-Larsen Attack |
| 291. Vachier-Lagrave vs P Dittmar |
| 1-0 | 40 | 2009 | Gibraltar Masters | B12 Caro-Kann Defense |
| 292. P Dittmar vs D Vanheirzeele |
| 1-0 | 56 | 2009 | Gibraltar Masters | A01 Nimzovich-Larsen Attack |
| 293. A Stebbings vs P Dittmar |
| 0-1 | 50 | 2009 | Gibraltar Masters | E46 Nimzo-Indian |
| 294. P Dittmar vs E Berg |
| 0-1 | 29 | 2009 | Gibraltar Masters | A01 Nimzovich-Larsen Attack |
| 295. T Chapman vs P Dittmar |
| ½-½ | 76 | 2009 | Gibraltar Masters | B10 Caro-Kann |
| 296. P Dittmar vs E de Groote |
| 0-1 | 47 | 2009 | Gibraltar Masters | A01 Nimzovich-Larsen Attack |
| 297. P Dittmar vs D Parrini |
| 1-0 | 100 | 2009 | Arco Open | A36 English |
| 298. C Bonanzinga vs P Dittmar |
| ½-½ | 57 | 2009 | Arco Open | B15 Caro-Kann |
| 299. P Dittmar vs Henk Riepma |
| 1-0 | 22 | 2009 | Arco Open | A25 English |
| 300. Rozentalis vs P Dittmar |
| 1-0 | 36 | 2009 | Arco Open | B12 Caro-Kann Defense |
Kibitzing
