| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Schenderowitsch vs J Koller |
| 1-0 | 40 | 2007 | German Championship | A26 English |
| 27. J Koller vs F Schellmann |
| ½-½ | 41 | 2007 | German Championship | C39 King's Gambit Accepted |
| 28. H Tabatt vs J Koller |
| 1-0 | 39 | 2007 | German Championship | B40 Sicilian |
| 29. C Hamann vs J Koller |
| 1-0 | 22 | 2007 | German Championship | B20 Sicilian |
| 30. J Koller vs P Suren |
| 1-0 | 36 | 2007 | German Championship | B00 Uncommon King's Pawn Opening |
| 31. C Zill vs J Koller |
| ½-½ | 26 | 2007 | German Championship | B40 Sicilian |
| 32. S Reschke vs J Koller |
| ½-½ | 37 | 2007 | Hessen-ch M | A05 Reti Opening |
Kibitzing
