| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 301. P Dittmar vs M Bonade |
| 1-0 | 28 | 2009 | Arco Open | A37 English, Symmetrical |
| 302. R Bernardi vs P Dittmar |
| 0-1 | 31 | 2009 | Arco Open | B12 Caro-Kann Defense |
| 303. P Dittmar vs K Arakhamia-Grant |
| 0-1 | 38 | 2009 | Arco Open | A37 English, Symmetrical |
| 304. S Bonagura vs P Dittmar |
 | ½-½ | 66 | 2009 | Arco Open | A46 Queen's Pawn Game |
| 305. P Dittmar vs Kamsky |
| 0-1 | 70 | 2010 | Gibraltar Masters | A10 English |
| 306. J Flores Chico vs P Dittmar |
| 0-1 | 42 | 2010 | Gibraltar Masters | C01 French, Exchange |
| 307. P Dittmar vs P Flermoen |
| ½-½ | 91 | 2010 | Gibraltar Masters | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 308. T Brown vs P Dittmar |
| 0-1 | 43 | 2010 | Gibraltar Masters | E46 Nimzo-Indian |
| 309. P Dittmar vs M Frey |
| 1-0 | 15 | 2010 | Gibraltar Masters | A15 English |
| 310. L Javakhishvili vs P Dittmar |
| 1-0 | 34 | 2010 | Gibraltar Masters | D34 Queen's Gambit Declined, Tarrasch |
| 311. P Dittmar vs S Fokin |
| ½-½ | 52 | 2010 | Gibraltar Masters | A13 English |
| 312. J Kvisla vs P Dittmar |
| ½-½ | 40 | 2010 | Gibraltar Masters | E33 Nimzo-Indian, Classical |
| 313. P Dittmar vs V Gandrud |
| ½-½ | 50 | 2010 | Gibraltar Masters | A13 English |
| 314. S Weeramantry vs P Dittmar |
| 0-1 | 32 | 2010 | Gibraltar Masters | B13 Caro-Kann, Exchange |
| 315. P Dittmar vs Buhmann |
| 0-1 | 52 | 2011 | Gibraltar Masters | B10 Caro-Kann |
| 316. A Dasaolu vs P Dittmar |
| ½-½ | 30 | 2011 | Gibraltar Masters | A13 English |
| 317. P Dittmar vs M Memarian |
| 1-0 | 29 | 2011 | Gibraltar Masters | A20 English |
| 318. P J Kelly vs P Dittmar |
| 0-1 | 35 | 2011 | Gibraltar Masters | B20 Sicilian |
| 319. Speelman vs P Dittmar |
| 1-0 | 55 | 2011 | Gibraltar Masters | D42 Queen's Gambit Declined, Semi-Tarrasch, 7.Bd3 |
| 320. P Dittmar vs A Tari |
| 1-0 | 47 | 2011 | Gibraltar Masters | A39 English, Symmetrical, Main line with d4 |
| 321. A Cabrera vs P Dittmar |
| 1-0 | 61 | 2011 | Gibraltar Masters | B32 Sicilian |
| 322. P Dittmar vs M Daumen |
| 1-0 | 38 | 2011 | Gibraltar Masters | A20 English |
| 323. H Zygouris vs P Dittmar |
| 1-0 | 41 | 2011 | Gibraltar Masters | A13 English |
| 324. P Dittmar vs C Vinas Guerrero |
| ½-½ | 38 | 2011 | Gibraltar Masters | A10 English |
| 325. P Dittmar vs Gleizerov |
| 0-1 | 39 | 2012 | Server24 op | C01 French, Exchange |
Kibitzing
