| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Polugaevsky vs J H Donner |
| 1-0 | 39 |
1966 |
Beverwijk | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 27. Polugaevsky vs J H Donner |
| ½-½ | 41 |
1966 |
Beverwijk | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 28. Polugaevsky vs J H Donner |
| 1-0 | 41 |
1966 |
Beverwijk (Netherlands) | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 29. R Byrne vs Fischer |
 | 0-1 | 28 |
1967 |
Sousse Interzonal | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 30. W Pietzsch vs Tringov |
| ½-½ | 21 |
1967 |
Sarajevo It | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 31. S Bouaziz vs L Barczay |
| 0-1 | 35 |
1967 |
Sousse Interzonal | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 32. R Byrne vs S Bouaziz |
 | 0-1 | 70 |
1967 |
Sousse Interzonal | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 33. R Byrne vs Popovych |
| 1-0 | 44 |
1967 |
US Open | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 34. Browne vs Saidy |
 | ½-½ | 47 |
1967 |
US Open | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 35. J B Bednarski vs H Lehmann |
| 0-1 | 28 |
1967 |
Palma de Mallorca | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 36. R Byrne vs Larry Evans |
| ½-½ | 19 |
1967 |
US Championship | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 37. K Klundt vs Petrosian |
| ½-½ | 28 |
1968 |
Bamberg | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 38. B Ivanovic vs H Messing |
 | 1-0 | 28 |
1968 |
YUG-ch 23th | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 39. Velimirovic vs S Martinovic |
| 0-1 | 88 |
1968 |
Belgrade | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 40. Velimirovic vs Minic |
| 0-1 | 20 |
1968 |
Belgrade | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 41. C Benitez vs Gligoric |
| 0-1 | 37 |
1968 |
Meralco Open | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 42. K Klundt vs Schmid |
| 0-1 | 57 |
1968 |
Bamberg | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 43. G Sigurjonsson vs V Tukmakov |
| ½-½ | 69 |
1968 |
WchT U26 15th fin-A | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 44. I Zdanovs vs V Tukmakov |
| 1-0 | 32 |
1968 |
URS-chT | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 45. B Ivanovic vs S Cvetkovic |
| 0-1 | 100 |
1968 |
YUG-ch 23th | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 46. E Ladanyike-Karakas vs K Skegina |
| 0-1 | 34 |
1968 |
HUN-URS | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 47. J Konikowski vs B Barbulovic |
 | 1-0 | 25 |
1968 |
Augustow (Poland) | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 48. K Honfi vs L Barczay |
| 1-0 | 24 |
1968 |
Kecskemet Toth mem | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 49. Vadasz vs G Kluger |
| 1-0 | 38 |
1968 |
HUN-ch | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 50. Jansa vs J Adamski |
| ½-½ | 43 |
1969 |
Polanica Zdroj | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |