| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. S Kosmo vs S Barth Stanford |
| ½-½ | 60 | 2006 | European Club Cup | C59 Two Knights |
| 27. S Kosmo vs Nyback |
 | 0-1 | 39 | 2006 | Rilton Cup | B07 Pirc |
| 28. S Kosmo vs A Rouhani |
| 0-1 | 35 | 2006 | Rilton Cup | B89 Sicilian |
| 29. S Kosmo vs T Nyland |
| ½-½ | 54 | 2007 | Rilton Cup | C55 Two Knights Defense |
| 30. A Persson vs S Kosmo |
| ½-½ | 45 | 2007 | Rilton Cup | C41 Philidor Defense |
| 31. S Kosmo vs M Hansen |
| 1-0 | 53 | 2007 | Rilton Cup | C02 French, Advance |
| 32. S Brynell vs S Kosmo |
| ½-½ | 38 | 2007 | Rilton Cup | D32 Queen's Gambit Declined, Tarrasch |
| 33. Y Rantanen vs S Kosmo |
| 1-0 | 58 | 2007 | Heart of Finland op 17th | B82 Sicilian, Scheveningen |
| 34. Wojtaszek vs S Kosmo |
| 1-0 | 25 | 2008 | Rilton Cup 2008/09 | A70 Benoni, Classical with 7.Nf3 |
| 35. E Vaarala vs S Kosmo |
| ½-½ | 35 | 2008 | Rilton Cup 2008/09 | B80 Sicilian, Scheveningen |
| 36. S Kosmo vs C Krantz |
| 0-1 | 59 | 2008 | Rilton Cup 2008/09 | C03 French, Tarrasch |
| 37. N Marklund vs S Kosmo |
| 1-0 | 81 | 2008 | Rilton Cup 2008/09 | A67 Benoni, Taimanov Variation |
| 38. S Kosmo vs A Givon |
| ½-½ | 44 | 2012 | European Club Cup | B03 Alekhine's Defense |
| 39. T Baron vs S Kosmo |
| 1-0 | 37 | 2012 | European Club Cup | A60 Benoni Defense |
| 40. A Stebbings vs S Kosmo |
| ½-½ | 31 | 2012 | European Club Cup | A31 English, Symmetrical, Benoni Formation |
| 41. S Kosmo vs O A Stubberud |
| ½-½ | 36 | 2012 | European Club Cup | A07 King's Indian Attack |
| 42. S Kosmo vs R Cvek |
| ½-½ | 43 | 2013 | European Club Cup | B48 Sicilian, Taimanov Variation |
| 43. E Mihasi vs S Kosmo |
| 0-1 | 26 | 2013 | European Club Cup | A45 Queen's Pawn Game |
| 44. S J Barrett vs S Kosmo |
| 1-0 | 46 | 2013 | European Club Cup | A68 Benoni, Four Pawns Attack |
| 45. S Kosmo vs D J O'Donoghue |
| 1-0 | 25 | 2013 | European Club Cup | B30 Sicilian |
| 46. S Kosmo vs J Van Kemenade |
| 1-0 | 54 | 2013 | European Club Cup | A00 Uncommon Opening |
| 47. S Kosmo vs I Lauterbach |
| ½-½ | 66 | 2013 | European Club Cup | B07 Pirc |
| 48. D Semcesen vs S Kosmo |
| 1-0 | 42 | 2015 | Rilton Cup 2015/16 | A65 Benoni, 6.e4 |
| 49. S Kosmo vs F Cukrowski |
| 0-1 | 38 | 2015 | Rilton Cup 2015/16 | B30 Sicilian |
| 50. Axel Berglind vs S Kosmo |
| 0-1 | 57 | 2015 | Rilton Cup 2015/16 | A15 English |
Kibitzing
