| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Kashdan vs E Klein |
| 1-0 | 48 |
1930 |
Gyor it, HUN | B15 Caro-Kann |
| 2. E Klein vs B Szijjarto Szabo |
| 0-1 | 72 |
1930 |
Gyor it, HUN | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 3. Milner-Barry vs E Klein |
| 1-0 | 42 |
1935 |
Margate | B15 Caro-Kann |
| 4. Tartakower vs E Klein |
| 1-0 | 59 |
1935 |
Paris | D53 Queen's Gambit Declined |
| 5. B P Reilly vs E Klein |
| 1-0 | 49 |
1935 |
Margate | D12 Queen's Gambit Declined Slav |
| 6. Tartakower vs E Klein |
| 1-0 | 39 |
1935 |
Paris | D37 Queen's Gambit Declined |
| 7. Graf-Stevenson vs E Klein |
| 1-0 | 61 |
1936 |
Major Open | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 8. E Klein vs Szabo |
| 0-1 | 33 |
1938 |
Hastings 1938/39 | D96 Grunfeld, Russian Variation |
| 9. S Landau vs E Klein |
| 1-0 | 44 |
1939 |
Hastings 1938/39 | D26 Queen's Gambit Accepted |
| 10. E Klein vs Euwe |
| 0-1 | 61 |
1939 |
Hastings 1938/39 | E26 Nimzo-Indian, Samisch |
| 11. Keres vs E Klein |
 | 1-0 | 41 |
1946 |
radio Moskva-London m | E04 Catalan, Open, 5.Nf3 |
| 12. E Klein vs Gligoric |
| 0-1 | 47 |
1951 |
Staunton mem | E72 King's Indian |
| 13. Wade vs E Klein |
| 1-0 | 51 |
1951 |
Staunton mem | C82 Ruy Lopez, Open |
| 14. E Klein vs P Trifunovic |
| 0-1 | 33 |
1951 |
Staunton mem | B02 Alekhine's Defense |
| 15. J H Donner vs E Klein |
| 1-0 | 27 |
1951 |
Staunton mem | D72 Neo-Grunfeld, 5.cd, Main line |
| 16. Stahlberg vs E Klein |
| 1-0 | 55 |
1951 |
Staunton mem | D55 Queen's Gambit Declined |
| 17. E Klein vs Unzicker |
| 0-1 | 34 |
1951 |
Staunton mem | E41 Nimzo-Indian |
| 18. E Klein vs O Barda |
 | 0-1 | 38 |
1952 |
Radio game (BBC-NRK) | A00 Uncommon Opening |
| 19. E Klein vs Keene |
 | 0-1 | 52 |
1973 |
London International | B08 Pirc, Classical |