| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. H Keller vs K Opocensky |
| 0-1 | 33 | 1947 | Schlechter Memorial | D02 Queen's Pawn Game |
| 27. Szabo vs H Keller |
| 1-0 | 29 | 1947 | Schlechter Memorial | A95 Dutch, Stonewall |
| 28. H Keller vs E Stoeckl |
| ½-½ | 58 | 1947 | Schlechter Memorial | D11 Queen's Gambit Declined Slav |
| 29. H Keller vs L Watzl |
| 1-0 | 56 | 1947 | Schlechter Memorial | A15 English |
| 30. M Turiansky vs H Keller |
| ½-½ | 46 | 1947 | Schlechter Memorial | D48 Queen's Gambit Declined Semi-Slav, Meran |
| 31. H Keller vs H Mueller |
| 0-1 | 23 | 1947 | Schlechter Memorial | E67 King's Indian, Fianchetto |
| 32. K Palda vs H Keller |
| 1-0 | 47 | 1947 | Schlechter Memorial | A07 King's Indian Attack |
| 33. H Keller vs C Kottnauer |
| 0-1 | 42 | 1947 | Schlechter Memorial | E67 King's Indian, Fianchetto |
| 34. J Lokvenc vs H Keller |
| 1-0 | 52 | 1947 | Schlechter Memorial | B20 Sicilian |
| 35. H Keller vs K Galia |
| ½-½ | 40 | 1947 | Schlechter Memorial | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 36. H Grob vs H Keller |
| 0-1 | 31 | 1947 | Schlechter Memorial | B23 Sicilian, Closed |
| 37. H Keller vs Z Kovacs |
| ½-½ | 15 | 1947 | Schlechter Memorial | E33 Nimzo-Indian, Classical |
| 38. Gruenfeld vs H Keller |
| ½-½ | 19 | 1947 | Schlechter Memorial | E17 Queen's Indian |
| 39. B Rabar vs H Keller |
| 1-0 | 22 | 1949 | Yugoslavia - Austria | D50 Queen's Gambit Declined |
| 40. H Keller vs K Opocensky |
| 0-1 | 41 | 1949 | Austria - Czechoslovakia | A06 Reti Opening |
| 41. K Opocensky vs H Keller |
| ½-½ | 51 | 1949 | Austria - Czechoslovakia | D30 Queen's Gambit Declined |
| 42. B Milic vs H Keller |
| 1-0 | 63 | 1950 | AUT-YUG | D30 Queen's Gambit Declined |
| 43. H Keller vs B Milic |
| 0-1 | 58 | 1950 | AUT-YUG | D94 Grunfeld |
| 44. H Keller vs B Tot |
| 0-1 | 28 | 1950 | Belgrade Championship | A04 Reti Opening |
| 45. A Matanovic vs H Keller |
| 1-0 | 26 | 1950 | Belgrade Championship | B63 Sicilian, Richter-Rauzer Attack |
| 46. H Keller vs F Norcia |
| 1-0 | 37 | 1951 | Reggio Emilia | D37 Queen's Gambit Declined |
| 47. H Keller vs E Paoli |
| 1-0 | 60 | 1951 | Reggio Emilia | D45 Queen's Gambit Declined Semi-Slav |
| 48. M Czerniak vs H Keller |
| 1-0 | 25 | 1951 | Reggio Emilia | B08 Pirc, Classical |
| 49. E Canal vs H Keller |
| 0-1 | 47 | 1951 | Reggio Emilia | B28 Sicilian, O'Kelly Variation |
| 50. H Keller vs E Romani |
| ½-½ | 52 | 1951 | Reggio Emilia | E11 Bogo-Indian Defense |
Kibitzing
