| page 3 of 3; games 51-66 of 66 |
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| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. H Gross vs J R Mortz |
| ½-½ | 51 | 1961 | 62nd US Open | B93 Sicilian, Najdorf, 6.f4 |
| 52. H Mayer vs H Gross |
| 0-1 | 65 | 1961 | 62nd US Open | C42 Petrov Defense |
| 53. H Gross vs Dale Baker |
| 1-0 | 46 | 1961 | 62nd US Open | C02 French, Advance |
| 54. H Gross vs M Otteson |
| 0-1 | 26 | 1961 | 62nd US Open | B93 Sicilian, Najdorf, 6.f4 |
| 55. R Freeman vs H Gross |
| 0-1 | 60 | 1961 | 62nd US Open | A97 Dutch, Ilyin-Genevsky |
| 56. H Gross vs M Harrow |
| 0-1 | 30 | 1961 | 62nd US Open | B88 Sicilian, Fischer-Sozin Attack |
| 57. A Kraus vs H Gross |
| 0-1 | 38 | 1961 | 62nd US Open | C79 Ruy Lopez, Steinitz Defense Deferred |
| 58. H Gross vs W E Kaiser |
| 1-0 | 35 | 1961 | 62nd US Open | B77 Sicilian, Dragon, Yugoslav Attack |
| 59. E McCormick vs H Gross |
| 0-1 | 41 | 1961 | 62nd US Open | C26 Vienna |
| 60. H Gross vs W Addison |
| ½-½ | 18 | 1961 | 62nd US Open | B12 Caro-Kann Defense |
| 61. Benko vs H Gross |
| 1-0 | 40 | 1961 | 62nd US Open | A04 Reti Opening |
| 62. Najdorf vs H Gross |
| ½-½ | 35 | 1963 | San Francisco | D22 Queen's Gambit Accepted |
| 63. H Gross vs Suttles |
  | 0-1 | 28 | 1963 | ? | B06 Robatsch |
| 64. Fischer vs H Gross |
| ½-½ | 33 | 1964 | Simul, 50b | C29 Vienna Gambit |
| 65. Suttles vs H Gross |
| 1-0 | 26 | 1965 | San Francisco | C26 Vienna |
| 66. P Dahl vs H Gross |
| 1-0 | 25 | 1974 | San Francisco | C44 King's Pawn Game |
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| page 3 of 3; games 51-66 of 66 |
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Kibitzing
