| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. P Lapiken vs I Zalys |
| 0-1 | 54 | 1964 | 65th US Open | A00 Uncommon Opening |
| 52. I Zalys vs E W Marchand |
| 1-0 | 44 | 1964 | 65th US Open | D18 Queen's Gambit Declined Slav, Dutch |
| 53. J C Meyer vs I Zalys |
| ½-½ | 112 | 1964 | 65th US Open | E26 Nimzo-Indian, Samisch |
| 54. Bisguier vs I Zalys |
| ½-½ | 49 | 1964 | 65th US Open | E21 Nimzo-Indian, Three Knights |
| 55. I Zalys vs P Brandts |
| ½-½ | 56 | 1964 | 65th US Open | A48 King's Indian |
| 56. L Day vs I Zalys |
| ½-½ | 52 | 1965 | Montreal-Ontario match | B28 Sicilian, O'Kelly Variation |
| 57. I Zalys vs R Ledesma |
| 1-0 | 27 | 1965 | 66th US Open | C18 French, Winawer |
| 58. I Zalys vs R Betza |
| ½-½ | 16 | 1965 | 66th US Open | E11 Bogo-Indian Defense |
| 59. A Zuntaks vs I Zalys |
| ½-½ | 39 | 1965 | 66th US Open | B28 Sicilian, O'Kelly Variation |
| 60. I Zalys vs A Higuera |
| 0-1 | 58 | 1965 | 66th US Open | D37 Queen's Gambit Declined |
| 61. R Ramirez vs I Zalys |
| 0-1 | 41 | 1965 | 66th US Open | A03 Bird's Opening |
| 62. I Zalys vs A Berrios Pagan |
| 1-0 | 40 | 1965 | 66th US Open | E85 King's Indian, Samisch, Orthodox Variation |
| 63. A Popov vs I Zalys |
| ½-½ | 38 | 1965 | 66th US Open | E24 Nimzo-Indian, Samisch |
| 64. I Zalys vs L Rojas |
| ½-½ | 49 | 1965 | 66th US Open | E15 Queen's Indian |
| 65. D Reynolds vs I Zalys |
| ½-½ | 30 | 1965 | 66th US Open | E06 Catalan, Closed, 5.Nf3 |
| 66. M Colon Romero vs I Zalys |
| 1-0 | 62 | 1965 | 66th US Open | E26 Nimzo-Indian, Samisch |
| 67. I Zalys vs A Colon |
| 1-0 | 49 | 1965 | 66th US Open | D30 Queen's Gambit Declined |
| 68. I Zalys vs H Wright |
| 1-0 | 24 | 1966 | USA Golden Knights corr | C78 Ruy Lopez |
| 69. I Zalys vs L Day |
| ½-½ | 58 | 1966 | Ottawa Open | A04 Reti Opening |
| 70. I Zalys vs Z Wester |
| 1-0 | 19 | 1966 | 67th US Open | E77 King's Indian |
| 71. D Seiter vs I Zalys |
| 0-1 | 24 | 1966 | 67th US Open | A04 Reti Opening |
| 72. I Zalys vs Lombardy |
| 0-1 | 51 | 1966 | 67th US Open | A48 King's Indian |
| 73. R Parsons vs I Zalys |
| 0-1 | 29 | 1966 | 67th US Open | B80 Sicilian, Scheveningen |
| 74. I Zalys vs P Herbers |
| 0-1 | 35 | 1966 | 67th US Open | A15 English |
| 75. M Kenney vs I Zalys |
| ½-½ | 57 | 1966 | 67th US Open | A13 English |
Kibitzing
