| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. S Kosanski vs P Klincov |
| ½-½ | 79 | 1974 | Yugoslav First League | B27 Sicilian |
| 27. R Mujagic vs S Kosanski |
| 0-1 | 62 | 1974 | Yugoslav First League | B06 Robatsch |
| 28. G Cabrilo vs S Kosanski |
| 0-1 | 31 | 1974 | Yugoslav First League | B06 Robatsch |
| 29. S Kosanski vs Z Pavicic |
| 1-0 | 40 | 1974 | Yugoslav First League | B49 Sicilian, Taimanov Variation |
| 30. S Kosanski vs M Vukovic |
| ½-½ | 40 | 1974 | Yugoslav First League | B18 Caro-Kann, Classical |
| 31. S Kosanski vs P Zonjic |
| 1-0 | 65 | 1974 | Yugoslav First League | B31 Sicilian, Rossolimo Variation |
| 32. S Kosanski vs E Mauhler |
| 1-0 | 29 | 1974 | Yugoslav First League | B75 Sicilian, Dragon, Yugoslav Attack |
| 33. S Kosanski vs P Dely |
| 0-1 | 50 | 1975 | Zagreb | B18 Caro-Kann, Classical |
| 34. S Marangunic vs S Kosanski |
| 1-0 | 62 | 1975 | Zagreb | A04 Reti Opening |
| 35. S Kosanski vs M Vukovic |
| 1-0 | 33 | 1977 | Yugoslav First League | C73 Ruy Lopez, Modern Steinitz Defense |
| 36. S Kosanski vs S Djuric |
| 0-1 | 47 | 1977 | Yugoslav First League | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 37. M Ilijc vs S Kosanski |
| 0-1 | 82 | 1977 | Yugoslav First League | A20 English |
| 38. M Jovicic vs S Kosanski |
| 0-1 | 34 | 1977 | Yugoslav First League | A04 Reti Opening |
| 39. E Sindik vs S Kosanski |
| 0-1 | 64 | 1977 | Yugoslav First League | B15 Caro-Kann |
| 40. S Kosanski vs T Rakic |
| ½-½ | 22 | 1977 | Yugoslav First League | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 41. D Lazic vs S Kosanski |
| ½-½ | 55 | 1977 | Yugoslav First League | B08 Pirc, Classical |
| 42. S Kosanski vs T Mahmutefendic |
| ½-½ | 48 | 1977 | Yugoslav First League | B30 Sicilian |
| 43. L Crepinsek vs S Kosanski |
| 0-1 | 43 | 1977 | Yugoslav First League | A36 English |
| 44. S Kosanski vs E Sindik |
| 0-1 | 61 | 1977 | Zagreb Championship 1977/78 | B23 Sicilian, Closed |
| 45. S Kosanski vs Ivkov |
| ½-½ | 23 | 1978 | Osijek | C65 Ruy Lopez, Berlin Defense |
| 46. Sax vs S Kosanski |
| 1-0 | 33 | 1978 | Osijek | B15 Caro-Kann |
| 47. S Kosanski vs G Tringov |
| ½-½ | 57 | 1978 | Osijek | B23 Sicilian, Closed |
| 48. M Diesen vs S Kosanski |
| 0-1 | 28 | 1978 | Osijek | A42 Modern Defense, Averbakh System |
| 49. S Kosanski vs B Pocuca |
| 1-0 | 49 | 1978 | Osijek | B40 Sicilian |
| 50. P Smederevac vs S Kosanski |
| 0-1 | 40 | 1978 | Osijek | A22 English |
Kibitzing
