| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Fischer vs Feuerstein |
 | 1-0 | 44 |
1957 |
US Championship 1957/58 | B40 Sicilian |
| 27. Reshevsky vs Feuerstein |
| 1-0 | 26 |
1957 |
US Championship 1957/58 | A49 King's Indian, Fianchetto without c4 |
| 28. Tringov vs Feuerstein |
| 1-0 | 56 |
1958 |
WchT U26 fin-A 05th | B00 Uncommon King's Pawn Opening |
| 29. Mednis vs Feuerstein |
| ½-½ | 40 |
1958 |
US Championship 1957/58 | A15 English |
| 30. Vukcevich vs Feuerstein |
| ½-½ | 62 |
1958 |
WchT U26 fin-A 05th | B01 Scandinavian |
| 31. Feuerstein vs Gipslis |
| 0-1 | 53 |
1958 |
World U26 Championship | A02 Bird's Opening |
| 32. Feuerstein vs Denker |
| 1-0 | 45 |
1958 |
US Championship 1957/58 | E46 Nimzo-Indian |
| 33. Feuerstein vs Lombardy |
| ½-½ | 32 |
1958 |
US Championship 1957/58 | A15 English |
| 34. A Di Camillo vs Feuerstein |
| ½-½ | 36 |
1958 |
US Championship 1957/58 | A49 King's Indian, Fianchetto without c4 |
| 35. Feuerstein vs R Steinmeyer |
| ½-½ | 60 |
1963 |
Manhattan Chess Club Championship | A15 English |
| 36. Feuerstein vs O Smith |
| 1-0 | 51 |
1968 |
5.corr ol | E46 Nimzo-Indian |
| 37. Feuerstein vs B Koch |
| ½-½ | 56 |
1968 |
5.corr ol | A60 Benoni Defense |
| 38. H R Engel vs Feuerstein |
| 1-0 | 37 |
1968 |
5.corr ol | A79 Benoni, Classical, 11.f3 |
| 39. M Boysan vs Feuerstein |
| ½-½ | 53 |
1968 |
5.corr ol | B43 Sicilian, Kan, 5.Nc3 |
| 40. Feuerstein vs F Smrcka |
| 0-1 | 24 |
1968 |
5.corr ol | E83 King's Indian, Samisch |
| 41. C Hunter vs Feuerstein |
| 1-0 | 28 |
1968 |
5.corr ol | B42 Sicilian, Kan |
| 42. Fischer vs Feuerstein |
| 1-0 | 34 |
1971 |
Manhattan blitz | B10 Caro-Kann |
| 43. Feuerstein vs I A Horowitz |
| 1-0 | 25 |
1972 |
US Championship | D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 |
| 44. Feuerstein vs G S DeFotis |
| ½-½ | 41 |
1972 |
US Championship | A80 Dutch |
| 45. Feuerstein vs Larry Evans |
| 0-1 | 33 |
1972 |
US Championship | A49 King's Indian, Fianchetto without c4 |
| 46. Lombardy vs Feuerstein |
| 1-0 | 36 |
1972 |
US Championship | B90 Sicilian, Najdorf |
| 47. Benko vs Feuerstein |
| ½-½ | 23 |
1972 |
US Championship | C41 Philidor Defense |
| 48. Kaufman vs Feuerstein |
| 1-0 | 54 |
1972 |
US Championship | E97 King's Indian |
| 49. Feuerstein vs Reshevsky |
| 0-1 | 33 |
1972 |
US Championship | A07 King's Indian Attack |
| 50. Feuerstein vs Kavalek |
| ½-½ | 40 |
1972 |
US Championship | A67 Benoni, Taimanov Variation |
