| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Kofman vs E Kogan |
| 1-0 | 29 | 1945 | Ukrainian Championship | A07 King's Indian Attack |
| 2. Geller vs E Kogan |
 | 1-0 | 34 | 1946 | Odessa | B53 Sicilian |
| 3. I Pogrebissky vs E Kogan |
| 0-1 | 32 | 1948 | Ukrainian Championship | A97 Dutch, Ilyin-Genevsky |
| 4. Y Sakharov vs E Kogan |
| ½-½ | 20 | 1948 | Ukrainian Championship | B74 Sicilian, Dragon, Classical |
| 5. E Kogan vs K Klaman |
| 1-0 | 24 | 1948 | 1st Soviet Team-ch final | B84 Sicilian, Scheveningen |
| 6. A Sokolsky vs E Kogan |
| 1-0 | 48 | 1949 | Ukrainian Championship | A00 Uncommon Opening |
| 7. V Skotorenko vs E Kogan |
| 0-1 | 30 | 1949 | Ukrainian Championship | E80 King's Indian, Samisch Variation |
| 8. E Kogan vs I Pogrebissky |
| ½-½ | 16 | 1949 | Ukrainian Championship | C80 Ruy Lopez, Open |
| 9. E Kogan vs Ragozin |
| 0-1 | 34 | 1950 | URS-ch sf Kiev | C81 Ruy Lopez, Open, Howell Attack |
| 10. I Lipnitsky vs E Kogan |
| ½-½ | 41 | 1950 | URS-ch sf Kiev | E67 King's Indian, Fianchetto |
| 11. E Kogan vs A Sokolsky |
| 0-1 | 30 | 1950 | URS-ch sf Kiev | B10 Caro-Kann |
| 12. E Kogan vs N Kopaev |
| 1-0 | 50 | 1950 | URS-ch sf Kiev | C91 Ruy Lopez, Closed |
| 13. Y Polyak vs E Kogan |
 | 1-0 | 37 | 1950 | Ukrainian Championship | E87 King's Indian, Samisch, Orthodox |
| 14. E Kogan vs I Lipnitsky |
| 0-1 | 20 | 1950 | Ukrainian Championship | D38 Queen's Gambit Declined, Ragozin Variation |
| 15. E Kogan vs G Uusi |
| 0-1 | 39 | 1951 | URS | C45 Scotch Game |
| 16. Gufeld vs E Kogan |
| ½-½ | 32 | 1954 | Ukrainian Championship | D55 Queen's Gambit Declined |
| 17. E Kogan vs L Stoliarov |
| 1-0 | 20 | 1954 | Ukrainian Championship | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 18. E Kogan vs E Lazarev |
| 1-0 | 33 | 1954 | Ukrainian Championship | B70 Sicilian, Dragon Variation |
| 19. E Kogan vs B Vorobets |
| ½-½ | 26 | 1957 | Odessa | A34 English, Symmetrical |
| 20. M Levin vs E Kogan |
| 1-0 | 17 | 1957 | Odessa | B56 Sicilian |
| 21. V Tokarev vs E Kogan |
| 0-1 | 43 | 1957 | Odessa | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 22. M Ostrauskas vs E Kogan |
| 0-1 | 45 | 1957 | LTU-UKR | B32 Sicilian |
| 23. E Kogan vs J Rotstein |
| 1-0 | 30 | 1957 | Odessa | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 24. A Bannik vs E Kogan |
| 1-0 | 42 | 1957 | Ukrainian Championship | E13 Queen's Indian, 4.Nc3, Main line |
| 25. E Kogan vs Lilienthal |
| ½-½ | 22 | 1957 | Ukrainian Championship | A46 Queen's Pawn Game |
Kibitzing
