| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Hort vs Taimanov |
| ½-½ | 19 |
1967 |
Leningrad | E37 Nimzo-Indian, Classical |
| 2. Hort vs Taimanov |
| ½-½ | 19 |
1967 |
Leningrad | E37 Nimzo-Indian, Classical |
| 3. Hort vs S Kupka |
| 1-0 | 57 |
1968 |
CZE | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 4. Hort vs Karaklajic |
| 1-0 | 51 |
1968 |
Wijk aan Zee | E46 Nimzo-Indian |
| 5. Hort vs E Jimenez-Zerguera |
| ½-½ | 16 |
1968 |
Lugano | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 6. Hort vs Najdorf |
| ½-½ | 21 |
1969 |
Palma de Mallorca | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 7. Hort vs Ivkov |
| 1-0 | 34 |
1970 |
Rovinj | E46 Nimzo-Indian |
| 8. Hort vs E Nowak |
| 1-0 | 33 |
1970 |
Havirov CZE ch | E40 Nimzo-Indian, 4.e3 |
| 9. Hort vs J Kostro |
| 1-0 | 28 |
1971 |
Luhacovice | E46 Nimzo-Indian |
| 10. Hort vs Keene |
| ½-½ | 24 |
1971 |
Hastings | E43 Nimzo-Indian, Fischer Variation |
| 11. Hort vs Larry Evans |
| ½-½ | 42 |
1972 |
San Antonio | E46 Nimzo-Indian |
| 12. Hort vs R Garcia |
| 1-0 | 30 |
1973 |
Leipzig | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 13. Hort vs Ivkov |
| 0-1 | 27 |
1973 |
Petropolis | E39 Nimzo-Indian, Classical, Pirc Variation |
| 14. Hort vs M Stean |
| ½-½ | 33 |
1975 |
Moscow | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 15. Hort vs Kaplan |
| 1-0 | 36 |
1975 |
Hastings | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 16. Hort vs Geller |
| ½-½ | 48 |
1975 |
Wijk aan Zee | E50 Nimzo-Indian, 4.e3 O-O 5.Nf3, without ...d5 |
| 17. Hort vs Sosonko |
 | 1-0 | 40 |
1975 |
Hastings | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 18. Hort vs R Bellin |
| ½-½ | 41 |
1975 |
Hastings | E21 Nimzo-Indian, Three Knights |
| 19. Hort vs Ribli |
| ½-½ | 35 |
1976 |
Manila | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 20. Hort vs L Blackstock |
| 1-0 | 35 |
1977 |
Lord John Cup | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 21. Hort vs Sofrevski |
| ½-½ | 27 |
1977 |
Stip 24/595 | E46 Nimzo-Indian |
| 22. Hort vs Spassky |
| ½-½ | 42 |
1977 |
Reykjavik cm qf | E59 Nimzo-Indian, 4.e3, Main line |
| 23. Hort vs J Adamski |
| 1-0 | 40 |
1977 |
Polanica Zdroj | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
| 24. Hort vs Lombardy |
| 1-0 | 41 |
1978 |
Reykjavik | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 25. Hort vs Timman |
| ½-½ | 34 |
1979 |
Tilburg | E32 Nimzo-Indian, Classical |