Game |
| Result | Moves |
Year | Event/Locale | Opening |
26. A Delorme vs J Sondermann |
| 1-0 | 51 | 2009 | 7th International Chess Festival (B) | B77 Sicilian, Dragon, Yugoslav Attack |
27. C Paci vs J Sondermann |
| ½-½ | 92 | 2009 | 7th International Chess Festival (B) | A04 Reti Opening |
28. T E Wiley vs J Sondermann |
| 1-0 | 42 | 2009 | 7th International Chess Festival (B) | E91 King's Indian |
29. J Sondermann vs N Ninov |
| 0-1 | 51 | 2009 | 7th International Chess Festival (B) | B29 Sicilian, Nimzovich-Rubinstein |
30. M Lagarde vs J Sondermann |
| 1-0 | 29 | 2009 | 7th International Chess Festival (B) | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
31. J Sondermann vs C Marzolo |
| 0-1 | 34 | 2009 | 7th International Chess Festival (B) | C02 French, Advance |
32. J Sondermann vs O Pucher |
| 1-0 | 32 | 2009 | 7th International Chess Festival (B) | A45 Queen's Pawn Game |
33. J Sondermann vs V Steinhauser |
| 1-0 | 23 | 2009 | Teplice Open | C69 Ruy Lopez, Exchange, Gligoric Variation |
34. M Vokac vs J Sondermann |
| 1-0 | 48 | 2009 | Teplice Open | A04 Reti Opening |
35. J Sondermann vs P Valenta |
| 1-0 | 53 | 2009 | Teplice Open | B22 Sicilian, Alapin |
36. J Hajek vs J Sondermann |
| 0-1 | 30 | 2009 | Teplice Open | B27 Sicilian |
37. J Sondermann vs A Pakhomov |
| 0-1 | 30 | 2009 | Teplice Open | B00 Uncommon King's Pawn Opening |
38. T Kriebel vs J Sondermann |
| 1-0 | 42 | 2009 | Teplice Open | B27 Sicilian |
39. J Sondermann vs D Steinhauser |
| 1-0 | 37 | 2009 | Teplice Open | B76 Sicilian, Dragon, Yugoslav Attack |
40. V Machala vs J Sondermann |
| 0-1 | 40 | 2009 | Teplice Open | A04 Reti Opening |
41. J Sondermann vs E Kulovana |
| ½-½ | 62 | 2009 | Teplice Open | C61 Ruy Lopez, Bird's Defense |