| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. A H Williams vs L S Tate |
| ½-½ | 18 |
1968 |
BCF-ch | B09 Pirc, Austrian Attack |
| 2. C W Pritchett vs A H Williams |
| ½-½ | 28 |
1968 |
BCF-ch | B92 Sicilian, Najdorf, Opocensky Variation |
| 3. C Hilton vs A H Williams |
| 0-1 | 47 |
1968 |
BCF-ch | B90 Sicilian, Najdorf |
| 4. M V Lambshire vs A H Williams |
| 0-1 | 45 |
1968 |
BCF-ch | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 5. A H Williams vs Keene |
  | ½-½ | 36 |
1968 |
Swansea team tourney | B06 Robatsch |
| 6. Hartston vs A H Williams |
| 1-0 | 74 |
1968 |
BCF-ch | B98 Sicilian, Najdorf |
| 7. A H Williams vs K B Richardson |
| ½-½ | 24 |
1968 |
BCF-ch | B80 Sicilian, Scheveningen |
| 8. A H Williams vs R H Watson |
| ½-½ | 58 |
1968 |
BCF-ch | B10 Caro-Kann |
| 9. B Cafferty vs A H Williams |
| ½-½ | 22 |
1968 |
BCF-ch | A35 English, Symmetrical |
| 10. A Hollis vs A H Williams |
| ½-½ | 28 |
1968 |
BCF-ch | E25 Nimzo-Indian, Samisch |
| 11. A H Williams vs B H Wood |
 | 1-0 | 22 |
1968 |
BCF-ch | B75 Sicilian, Dragon, Yugoslav Attack |
| 12. A H Williams vs M Brigden |
| ½-½ | 24 |
1968 |
BCF-ch | B28 Sicilian, O'Kelly Variation |
| 13. A H Williams vs Keene |
| 0-1 | 37 |
1969 |
Camb Univ college match | B08 Pirc, Classical |
| 14. A H Williams vs Keene |
 | 0-1 | 26 |
1969 |
Match | A41 Queen's Pawn Game (with ...d6) |
| 15. Keene vs A H Williams |
| 1-0 | 21 |
1969 |
Match | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 16. K Rogoff vs A H Williams |
 | ½-½ | 106 |
1969 |
World Junior Championship, B Final | A56 Benoni Defense |
| 17. A H Williams vs Keene |
 | 0-1 | 27 |
1970 |
Cuppers Final | A53 Old Indian |
| 18. A H Williams vs G Botterill |
| 0-1 | 41 |
1970 |
BCF-ch | B08 Pirc, Classical |
| 19. A H Williams vs J Penrose |
| ½-½ | 19 |
1970 |
BCF-ch | B22 Sicilian, Alapin |
| 20. A H Williams vs D W Anderton |
| 1-0 | 40 |
1970 |
BCF-ch | C19 French, Winawer, Advance |
| 21. Hartston vs A H Williams |
| ½-½ | 17 |
1970 |
BCF-ch | A17 English |
| 22. B Green vs A H Williams |
| 0-1 | 58 |
1970 |
BCF-ch | B02 Alekhine's Defense |
| 23. A H Williams vs R G Eales |
| ½-½ | 15 |
1970 |
BCF-ch | B13 Caro-Kann, Exchange |
| 24. A H Williams vs P Clarke |
| ½-½ | 21 |
1970 |
BCF-ch | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 25. R C Lemon vs A H Williams |
| 0-1 | 50 |
1970 |
BCF-ch | E24 Nimzo-Indian, Samisch |