| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Beliavsky vs J Cooper |
 | 1-0 | 39 |
1973 |
Wch U20 fin-A | B44 Sicilian |
| 2. J Cooper vs Beliavsky |
| 0-1 | 53 |
1973 |
Wch U20 prel-A | E93 King's Indian, Petrosian System |
| 3. J Cooper vs Petrosian |
 | 0-1 | 49 |
1974 |
Nica | E91 King's Indian |
| 4. J Cooper vs Najdorf |
| 1-0 | 32 |
1974 |
Nica (ol) 17/670 | A56 Benoni Defense |
| 5. O Rigaud vs J Cooper |
 | 0-1 | 5 |
1974 |
Olympiad | C30 King's Gambit Declined |
| 6. Nunn vs J Cooper |
 | 1-0 | 35 |
1976 |
Surrey | C50 Giuoco Piano |
| 7. R W Smith vs J Cooper |
| 0-1 | 32 |
1976 |
Olympiad | C35 King's Gambit Accepted, Cunningham |
| 8. Nunn vs J Cooper |
| 1-0 | 35 |
1976 |
Surrey Open | C50 Giuoco Piano |
| 9. J Cooper vs K Commons |
 | ½-½ | 41 |
1976 |
Haifa ol (Men) | E31 Nimzo-Indian, Leningrad, Main line |
| 10. P Littlewood vs J Cooper |
| ½-½ | 43 |
1978 |
Ayr British ch | C02 French, Advance |
| 11. J Cooper vs Plaskett |
 | 0-1 | 39 |
1978 |
Ayr British ch | E30 Nimzo-Indian, Leningrad |
| 12. J Cooper vs Huebner |
| 0-1 | 28 |
1978 |
Buenos Aires ol (Men) | A42 Modern Defense, Averbakh System |
| 13. Speelman vs J Cooper |
| 1-0 | 37 |
1978 |
Ayr British ch | E96 King's Indian, Orthodox, 7...Nbd7, Main line |
| 14. J Horner vs J Cooper |
 | 0-1 | 40 |
1978 |
Ayr British ch | C78 Ruy Lopez |
| 15. J Cooper vs J Littlewood |
| 1-0 | 42 |
1978 |
Ayr British ch | A49 King's Indian, Fianchetto without c4 |
| 16. J Cooper vs A J Whiteley |
| 1-0 | 35 |
1978 |
Ayr British ch | D89 Grunfeld |
| 17. R Bellin vs J Cooper |
| ½-½ | 33 |
1978 |
Ayr British ch | D00 Queen's Pawn Game |
| 18. G Lee vs J Cooper |
| 0-1 | 33 |
1978 |
Ayr British ch | C02 French, Advance |
| 19. Flear vs J Cooper |
| 0-1 | 58 |
1978 |
Ayr British ch | E92 King's Indian |
| 20. J Cooper vs A J Mestel |
 | 0-1 | 57 |
1978 |
Ayr British ch | D31 Queen's Gambit Declined |
| 21. J Cooper vs Petrosian |
 | 0-1 | 49 |
1978 |
Buenos | E30 Nimzo-Indian, Leningrad |
| 22. J Cooper vs D J Findlay |
| 1-0 | 25 |
1978 |
Ayr British ch | D24 Queen's Gambit Accepted |
| 23. J Cooper vs M Pein |
| 1-0 | 95 |
1980 |
BCF-ch | D87 Grunfeld, Exchange |
| 24. J Cooper vs A H Williams |
| ½-½ | 23 |
1981 |
WLS-ch | A47 Queen's Indian |
| 25. D Sully vs J Cooper |
| ½-½ | 28 |
1981 |
WLS-ch | E05 Catalan, Open, Classical line |