| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. F Ekstrom vs G Thomas |
 | 1-0 | 36 | 1946 | Hastings 1945/46 | D55 Queen's Gambit Declined |
| 27. F Ekstrom vs E G Sergeant |
| 1-0 | 35 | 1946 | Hastings 1945/46 | A08 King's Indian Attack |
| 28. M Christoffel vs F Ekstrom |
| 0-1 | 32 | 1946 | Hastings 1945/46 | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 29. F Ekstrom vs L Prins |
| 1-0 | 36 | 1946 | Hastings 1945/46 | E60 King's Indian Defense |
| 30. E Book vs F Ekstrom |
| 0-1 | 39 | 1946 | Match/Nation FIN-SWE | D11 Queen's Gambit Declined Slav |
| 31. F Ekstrom vs E Book |
 | 1-0 | 17 | 1946 | Match/Nation FIN-SWE | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 32. F Ekstrom vs G J Wood |
| 1-0 | 34 | 1946 | Zaanstreek | C58 Two Knights |
| 33. H Kramer vs F Ekstrom |
| 0-1 | 52 | 1946 | Zaanstreek | D19 Queen's Gambit Declined Slav, Dutch |
| 34. F Ekstrom vs Szabo |
| 1-0 | 59 | 1946 | Zaanstreek | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 35. G Stoltz vs F Ekstrom |
| 1-0 | 58 | 1946 | Zaanstreek | C17 French, Winawer, Advance |
| 36. Euwe vs F Ekstrom |
| ½-½ | 24 | 1946 | Zaanstreek | E38 Nimzo-Indian, Classical, 4...c5 |
| 37. G Thomas vs F Ekstrom |
| ½-½ | 60 | 1946 | Zaanstreek | A07 King's Indian Attack |
| 38. F Ekstrom vs V Soultanbeieff |
| 1-0 | 26 | 1946 | Zaanstreek | D16 Queen's Gambit Declined Slav |
| 39. F Ekstrom vs Znosko-Borovsky |
| 1-0 | 30 | 1946 | Zaanstreek | E16 Queen's Indian |
| 40. F Ekstrom vs P List |
| 1-0 | 34 | 1946 | Zaanstreek | E11 Bogo-Indian Defense |
| 41. W J Muhring vs F Ekstrom |
| ½-½ | 35 | 1946 | Zaanstreek | D17 Queen's Gambit Declined Slav |
| 42. M Christoffel vs F Ekstrom |
| 0-1 | 70 | 1946 | Zaanstreek | C19 French, Winawer, Advance |
| 43. H Lundin vs F Ekstrom |
| 0-1 | 9 | 1947 | Swedish ch | D45 Queen's Gambit Declined Semi-Slav |
| 44. I Niemela vs F Ekstrom |
| 0-1 | 57 | 1948 | Saltsjobaden tt | D22 Queen's Gambit Accepted |
| 45. P Hage vs F Ekstrom |
| 1-0 | 72 | 1948 | Saltsjobaden tt | B15 Caro-Kann |
| 46. B Horberg vs F Ekstrom |
| 0-1 | 39 | 1956 | Stockholm | B63 Sicilian, Richter-Rauzer Attack |
| 47. F Ekstrom vs Morcke |
| 1-0 | 24 | 1957 | landskamp | B98 Sicilian, Najdorf |
| 48. F Ekstrom vs G Carrisson |
| 1-0 | 24 | 1961 | EU-ch M corr | C61 Ruy Lopez, Bird's Defense |
| 49. F Ekstrom vs E G Svensson |
| 0-1 | 28 | 1964 | cr K | C81 Ruy Lopez, Open, Howell Attack |
| 50. W Klemm vs F Ekstrom |
| 0-1 | 37 | 1964 | cr EU M | B92 Sicilian, Najdorf, Opocensky Variation |
Kibitzing
