| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. K Klasups vs Tal |
 | 0-1 | 51 | 1958 | Latvian Championship | E69 King's Indian, Fianchetto, Classical Main line |
| 27. Koblents vs K Klasups |
| ½-½ | 25 | 1958 | Riga Championship | D32 Queen's Gambit Declined, Tarrasch |
| 28. K Klasups vs Korchnoi |
 | 0-1 | 41 | 1959 | URS-ch sf Chelyabinsk | E63 King's Indian, Fianchetto, Panno Variation |
| 29. K Klasups vs V Artsukevich |
| 0-1 | 38 | 1959 | URS-ch sf Chelyabinsk | A70 Benoni, Classical with 7.Nf3 |
| 30. Gufeld vs K Klasups |
| 1-0 | 37 | 1959 | URS-ch sf Chelyabinsk | C11 French |
| 31. K Klasups vs Tal |
| 0-1 | 40 | 1959 | Latvian Olympiad | A76 Benoni, Classical, 9...Re8 |
| 32. K Klasups vs J Ludolph |
| 0-1 | 61 | 1961 | Estonia - Latvia | D32 Queen's Gambit Declined, Tarrasch |
| 33. A Shmit vs K Klasups |
| 0-1 | 36 | 1962 | Riga Championship | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 34. V Kirillov vs K Klasups |
| 1-0 | 24 | 1962 | Riga Championship | B10 Caro-Kann |
| 35. K Klasups vs I Zdanovs |
| ½-½ | 49 | 1963 | Latvian Championship | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 36. K Klasups vs Gipslis |
| 0-1 | 14 | 1963 | Latvian Championship | E39 Nimzo-Indian, Classical, Pirc Variation |
| 37. Z Solmanis vs K Klasups |
| 1-0 | 38 | 1963 | Latvian Championship | C01 French, Exchange |
| 38. K Klasups vs Koblents |
| 0-1 | 49 | 1963 | Latvian Championship | E69 King's Indian, Fianchetto, Classical Main line |
| 39. Y Zelinsky vs K Klasups |
| ½-½ | 33 | 1963 | Latvian Championship | D29 Queen's Gambit Accepted, Classical |
| 40. A Shmit vs K Klasups |
| 1-0 | 39 | 1963 | Latvian Championship | A07 King's Indian Attack |
| 41. G Kuzmicevs vs K Klasups |
| 0-1 | 59 | 1963 | Latvian Championship | E46 Nimzo-Indian |
| 42. Klovans vs K Klasups |
| 1-0 | 41 | 1963 | Latvian Championship | C14 French, Classical |
| 43. J Klavins vs K Klasups |
| 1-0 | 42 | 1963 | Latvian Championship | C17 French, Winawer, Advance |
| 44. K Klasups vs I Zilber |
| 0-1 | 24 | 1963 | Latvian Championship | D25 Queen's Gambit Accepted |
| 45. K Klasups vs V Zhuravliov |
| 0-1 | 47 | 1963 | Latvian Championship | A60 Benoni Defense |
| 46. K Klasups vs A Petersons |
| 1-0 | 32 | 1963 | Latvian Championship | E62 King's Indian, Fianchetto |
| 47. K Klasups vs A Korelov |
| ½-½ | 26 | 1963 | Latvian Championship | D67 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 48. V Kirilov vs K Klasups |
| ½-½ | 46 | 1963 | Latvian Championship | A07 King's Indian Attack |
| 49. I Kalnins vs K Klasups |
| ½-½ | 48 | 1963 | Latvian Championship | D56 Queen's Gambit Declined |
Kibitzing
