| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. E Bukacek vs J Sloth |
| 0-1 | 41 |
1964 |
WchT U26 11th fin-A | B16 Caro-Kann, Bronstein-Larsen Variation |
| 2. J Sloth vs K B Richardson |
| 1-0 | 56 |
1964 |
WchT U26 11th qual-B | A10 English |
| 3. J Sloth vs K Ketola |
| 1-0 | 40 |
1964 |
WchT U26 11th qual-B | A30 English, Symmetrical |
| 4. K Tebourbi vs J Sloth |
| 0-1 | 53 |
1966 |
Orebro Stud olm prelim5 | B17 Caro-Kann, Steinitz Variation |
| 5. J Sloth vs M Basman |
 | 1-0 | 38 |
1966 |
Orebro Stud olm fA | A07 King's Indian Attack |
| 6. J Sloth vs K H Maeder |
| 1-0 | 40 |
1969 |
WchT U26 qual-B | A15 English |
| 7. M Benoit vs J Sloth |
| 0-1 | 46 |
1969 |
WchT U26 qual-B | B06 Robatsch |
| 8. N Karker vs J Sloth |
| 0-1 | 36 |
1971 |
EU-ch05 corr | C11 French |
| 9. J Sloth vs Bisguier |
| 1-0 | 58 |
1972 |
Skopje ol | A01 Nimzovich-Larsen Attack |
| 10. J Sloth vs A Sandor Siklos |
| 1-0 | 17 |
1975 |
W-ch8 corr7581 | D20 Queen's Gambit Accepted |
| 11. H W Duenhaupt vs J Sloth |
| 0-1 | 55 |
1975 |
Wch8 Final 7580 | A07 King's Indian Attack |
| 12. J Sloth vs J Boey |
| 1-0 | 19 |
1975 |
Wch8 Final 7580 | A04 Reti Opening |
| 13. J Sloth vs J Nun |
| 1-0 | 53 |
1975 |
corr Wch-8 | D34 Queen's Gambit Declined, Tarrasch |
| 14. J Sloth vs E Arnlind |
| 1-0 | 44 |
1975 |
Wch8 Final 7580 | A15 English |
| 15. J Sloth vs L Abramov |
| 1-0 | 35 |
1975 |
Wch8 Final 7580 | A07 King's Indian Attack |
| 16. A Khasin vs J Sloth |
| 0-1 | 36 |
1975 |
corr WCH | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 17. Estrin vs J Sloth |
| 0-1 | 78 |
1975 |
Wch8 Final 7580 | C04 French, Tarrasch, Guimard Main line |
| 18. J Sloth vs I Nemet |
| 1-0 | 61 |
1976 |
Aarhus | A15 English |
| 19. J Sloth vs Hoi |
| 1-0 | 61 |
1978 |
Esbjerg | B06 Robatsch |
| 20. A J Mestel vs J Sloth |
| 0-1 | 41 |
1978 |
Esbjerg | B17 Caro-Kann, Steinitz Variation |
| 21. L Schneider vs J Sloth |
| 0-1 | 39 |
1978 |
Esbjerg | B13 Caro-Kann, Exchange |
| 22. J Sloth vs E Mortensen |
| 1-0 | 40 |
1980 |
Esbjerg | A20 English |
| 23. K B Richardson vs J Sloth |
| 0-1 | 20 |
1984 |
Axelson mem corr8487 | C18 French, Winawer |
| 24. S Banfalvi vs J Sloth |
| 0-1 | 50 |
1984 |
Axelson mem corr8487 | E43 Nimzo-Indian, Fischer Variation |
| 25. H Rittner vs J Sloth |
| 0-1 | 78 |
2003 |
50th World Champions Jubilee Tournament | B56 Sicilian |
