| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Reti vs K Havasi |
 | 0-1 | 41 | 1912 | Temesvar | A84 Dutch |
| 2. K Havasi vs N Pesitz |
| 1-0 | 48 | 1912 | Temesvar | C70 Ruy Lopez |
| 3. K Havasi vs B Steiner |
| 0-1 | 70 | 1912 | Temesvar | C84 Ruy Lopez, Closed |
| 4. K Havasi vs Breyer |
| ½-½ | 23 | 1912 | Temesvar | C68 Ruy Lopez, Exchange |
| 5. B Dalmy vs K Havasi |
| 0-1 | 58 | 1912 | Temesvar | C44 King's Pawn Game |
| 6. K Havasi vs Z Barasz |
| ½-½ | 81 | 1912 | Temesvar | C90 Ruy Lopez, Closed |
| 7. Z von Balla vs K Havasi |
| 1-0 | 33 | 1912 | Temesvar | C66 Ruy Lopez |
| 8. K Havasi vs A Tyroler |
| 0-1 | 28 | 1912 | Temesvar | C68 Ruy Lopez, Exchange |
| 9. K Havasi vs L Asztalos |
| ½-½ | 25 | 1912 | Temesvar | C01 French, Exchange |
| 10. K Havasi vs Breyer |
 | 0-1 | 30 | 1917 | Budapest | C41 Philidor Defense |
| 11. Breyer vs K Havasi |
 | 1-0 | 31 | 1918 | Budapest | A45 Queen's Pawn Game |
| 12. Schlechter vs K Havasi |
| 1-0 | 19 | 1918 | Kaschau | C66 Ruy Lopez |
| 13. J Balogh vs K Havasi |
| 1-0 | 3 | 1918 | Kaschau | C60 Ruy Lopez |
| 14. K Havasi vs Reti |
| 0-1 | 44 | 1918 | Kaschau | C78 Ruy Lopez |
| 15. P Potemkin vs K Havasi |
| 0-1 | 44 | 1924 | Paris Unofficial Olympiad | C50 Giuoco Piano |
| 16. K Havasi vs L Palau |
| 0-1 | 41 | 1924 | Paris Unofficial Olympiad | D37 Queen's Gambit Declined |
| 17. M Golmayo vs K Havasi |
| 1-0 | 19 | 1924 | Paris Unofficial Olympiad | C66 Ruy Lopez |
| 18. H Mattison vs K Havasi |
| 1-0 | 35 | 1924 | Paris Unofficial Olympiad | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 19. A Tschepurnoff vs K Havasi |
| 1-0 | 28 | 1924 | Paris Unofficial Olympiad | B43 Sicilian, Kan, 5.Nc3 |
| 20. K Havasi vs A Vajda |
| 1-0 | 26 | 1924 | Paris Unofficial Olympiad | E64 King's Indian, Fianchetto, Yugoslav System |
| 21. K Havasi vs Euwe |
| 0-1 | 26 | 1924 | Paris Unofficial Olympiad | D15 Queen's Gambit Declined Slav |
| 22. F Apsenieks vs K Havasi |
| 0-1 | 25 | 1924 | Paris Unofficial Olympiad | E67 King's Indian, Fianchetto |
| 23. K Havasi vs L Asztalos |
| ½-½ | 28 | 1924 | Gyor | D52 Queen's Gambit Declined |
| 24. H Mueller vs K Havasi |
| ½-½ | 29 | 1924 | Gyor | D43 Queen's Gambit Declined Semi-Slav |
| 25. S Gruber vs K Havasi |
| 0-1 | 37 | 1924 | Gyor | D52 Queen's Gambit Declined |
Kibitzing
