| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Hort vs Y Stepak |
 | ½-½ | 42 | 1964 | WchT U26 11th fin-A | E84 King's Indian, Samisch, Panno Main line |
| 2. D De Loughrey vs Y Stepak |
| 0-1 | 55 | 1964 | Tel Aviv Olympiad qual-3 | B17 Caro-Kann, Steinitz Variation |
| 3. S Zinser vs Y Stepak |
| ½-½ | 54 | 1964 | Tel Aviv Olympiad qual-3 | B06 Robatsch |
| 4. Y Stepak vs Spassky |
| ½-½ | 36 | 1964 | Tel Aviv Olympiad Final-A | A17 English |
| 5. W Schmidt vs Y Stepak |
| ½-½ | 21 | 1964 | Tel Aviv Olympiad Final-A | C10 French |
| 6. Y Stepak vs B Wexler |
| 0-1 | 36 | 1964 | Tel Aviv Olympiad Final-A | E75 King's Indian, Averbakh, Main line |
| 7. Y Stepak vs Jansa |
| 0-1 | 40 | 1964 | Tel Aviv Olympiad Final-A | E83 King's Indian, Samisch |
| 8. Y Stepak vs L Prins |
| 0-1 | 77 | 1964 | Tel Aviv Olympiad Final-A | A10 English |
| 9. Lengyel vs Y Stepak |
| 1-0 | 44 | 1964 | Tel Aviv Olympiad Final-A | E60 King's Indian Defense |
| 10. Y Stepak vs Matulovic |
| 0-1 | 43 | 1964 | Tel Aviv Olympiad Final-A | B25 Sicilian, Closed |
| 11. E Perez Gosalbes vs Y Stepak |
| ½-½ | 31 | 1964 | Tel Aviv Olympiad Final-A | D87 Grunfeld, Exchange |
| 12. Y Stepak vs Hort |
| 0-1 | 59 | 1965 | World Student Team Championship qual-1 | A04 Reti Opening |
| 13. Y Stepak vs P N Lee |
| 1-0 | 44 | 1965 | World Student Team Championship Final-A | B25 Sicilian, Closed |
| 14. Y Stepak vs Savon |
| ½-½ | 19 | 1965 | World Student Team Championship Final-A | C47 Four Knights |
| 15. Y Stepak vs Hort |
| ½-½ | 17 | 1965 | World Student Team Championship Final-A | A07 King's Indian Attack |
| 16. H Ree vs Y Stepak |
| 0-1 | 44 | 1965 | World Student Team Championship Final-A | C02 French, Advance |
| 17. Gheorghiu vs Y Stepak |
| 1-0 | 33 | 1965 | World Student Team Championship Final-A | C10 French |
| 18. Y Stepak vs A Hennings |
| ½-½ | 59 | 1965 | World Student Team Championship Final-A | A22 English |
| 19. S Pedersen vs Y Stepak |
| 1-0 | 57 | 1965 | World Student Team Championship Final-A | A53 Old Indian |
| 20. Sliwa vs Y Stepak |
| 1-0 | 34 | 1966 | Tel Aviv | A16 English |
| 21. Y Stepak vs Y Kraidman |
| ½-½ | 40 | 1966 | Tel Aviv | A16 English |
| 22. M Czerniak vs Y Stepak |
| ½-½ | 67 | 1966 | Tel Aviv | B45 Sicilian, Taimanov |
| 23. Y Stepak vs Gligoric |
| ½-½ | 46 | 1966 | Tel Aviv | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 24. J Bolbochan vs Y Stepak |
| ½-½ | 67 | 1966 | Tel Aviv | A46 Queen's Pawn Game |
| 25. Y Stepak vs S Kagan |
| 0-1 | 52 | 1966 | Tel Aviv | B18 Caro-Kann, Classical |
Kibitzing
