| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Sloth vs E Scholl |
| 1-0 | 43 | 1964 | Niemeyer Juniors | D78 Neo-Grunfeld, 6.O-O c6 |
| 2. J Sloth vs G Antunac |
| 1-0 | 68 | 1964 | Niemeyer Juniors | A49 King's Indian, Fianchetto without c4 |
| 3. Huebner vs J Sloth |
| ½-½ | 35 | 1964 | Niemeyer Juniors | B76 Sicilian, Dragon, Yugoslav Attack |
| 4. J Sloth vs R A Harris |
| 1-0 | 38 | 1964 | Niemeyer Juniors | A49 King's Indian, Fianchetto without c4 |
| 5. J Sloth vs K Ketola |
 | 1-0 | 40 | 1964 | WchT U26 11th qual-B | A30 English, Symmetrical |
| 6. J Sloth vs K B Richardson |
| 1-0 | 56 | 1964 | WchT U26 11th qual-B | A10 English |
| 7. I Nemet vs J Sloth |
| ½-½ | 32 | 1964 | WchT U26 11th qual-B | B17 Caro-Kann, Steinitz Variation |
| 8. L M Kovacs vs J Sloth |
| 1-0 | 36 | 1964 | WchT U26 11th fin-A | B14 Caro-Kann, Panov-Botvinnik Attack |
| 9. E Bukacek vs J Sloth |
| 0-1 | 41 | 1964 | WchT U26 11th fin-A | B16 Caro-Kann, Bronstein-Larsen Variation |
| 10. L Kollberg vs J Sloth |
| 1-0 | 25 | 1964 | WchT U26 11th fin-A | D86 Grunfeld, Exchange |
| 11. Ujtumen vs J Sloth |
| 1-0 | 41 | 1964 | WchT U26 11th fin-A | B17 Caro-Kann, Steinitz Variation |
| 12. M Janata vs J Sloth |
| ½-½ | 41 | 1964 | WchT U26 11th fin-A | A12 English with b3 |
| 13. P Ostojic vs J Sloth |
| 1-0 | 44 | 1964 | WchT U26 11th fin-A | B14 Caro-Kann, Panov-Botvinnik Attack |
| 14. M Romm vs J Sloth |
| 1-0 | 41 | 1964 | WchT U26 11th fin-A | B17 Caro-Kann, Steinitz Variation |
| 15. J Sloth vs E Bogdanov |
| ½-½ | 35 | 1964 | WchT U26 11th fin-A | A16 English |
| 16. H Rautenstrauch vs J Sloth |
| 0-1 | 38 | 1965 | World Student Team Championship Final-A | B23 Sicilian, Closed |
| 17. J Sloth vs G Anoshin |
| ½-½ | 17 | 1965 | World Student Team Championship Final-A | D78 Neo-Grunfeld, 6.O-O c6 |
| 18. J Sloth vs J Tompa |
| 1-0 | 39 | 1965 | World Student Team Championship Final-A | A07 King's Indian Attack |
| 19. C B Wood vs J Sloth |
| ½-½ | 29 | 1965 | World Student Team Championship Final-A | B23 Sicilian, Closed |
| 20. J Sloth vs T Stanciu |
| 1-0 | 42 | 1965 | World Student Team Championship Final-A | A04 Reti Opening |
| 21. P van der Weide vs J Sloth |
| ½-½ | 23 | 1965 | World Student Team Championship Final-A | A02 Bird's Opening |
| 22. J Sloth vs Avner |
| 1-0 | 40 | 1965 | World Student Team Championship Final-A | A49 King's Indian, Fianchetto without c4 |
| 23. M Janata vs J Sloth |
| 0-1 | 44 | 1965 | World Student Team Championship Final-A | A37 English, Symmetrical |
| 24. J Sloth vs Taimanov |
| 0-1 | 71 | 1965 | Copenhagen | A04 Reti Opening |
| 25. J Sloth vs J Enevoldsen |
| 0-1 | 55 | 1965 | Copenhagen | D26 Queen's Gambit Accepted |
Kibitzing
