| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Arkell vs S Williams |
| 1-0 | 59 |
2000 |
BCF-ch 87th | A96 Dutch, Classical Variation |
| 27. D King vs S Williams |
| ½-½ | 24 |
2000 |
Miercurea Ciuc | C18 French, Winawer |
| 28. James Vigus vs S Williams |
| ½-½ | 52 |
2000 |
Smith & Williamson YM 10th | A96 Dutch, Classical Variation |
| 29. S Williams vs S Collins |
| 1-0 | 68 |
2001 |
Smith & Williamson ch-GBR | D15 Queen's Gambit Declined Slav |
| 30. J Gallagher vs S Williams |
 | 0-1 | 35 |
2001 |
10th Monarch Assurance | A96 Dutch, Classical Variation |
| 31. S Williams vs H Hunt |
| ½-½ | 27 |
2001 |
4NCL | A27 English, Three Knights System |
| 32. S Williams vs T Hillarp Persson |
| 1-0 | 59 |
2001 |
10th Monarch Assurance | A34 English, Symmetrical |
| 33. G Antal vs S Williams |
| 1-0 | 42 |
2001 |
SWYM | B76 Sicilian, Dragon, Yugoslav Attack |
| 34. S Williams vs D Gormally |
| 0-1 | 38 |
2001 |
Smith & Williamson ch-GBR | A28 English |
| 35. R Van Kemenade vs S Williams |
| 0-1 | 29 |
2001 |
10th Monarch Assurance | C00 French Defense |
| 36. S Williams vs L Trent |
| 1-0 | 50 |
2001 |
SWYM | D37 Queen's Gambit Declined |
| 37. A Harley vs S Williams |
| 0-1 | 21 |
2001 |
4NCL | B22 Sicilian, Alapin |
| 38. Emms vs S Williams |
 | 1-0 | 37 |
2001 |
Smith & Williamson ch-GBR | C05 French, Tarrasch |
| 39. S Williams vs Kiriakov |
| ½-½ | 17 |
2001 |
10th Monarch Assurance | C11 French |
| 40. P Wells vs S Williams |
| 0-1 | 40 |
2001 |
4NCL | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 41. M Goodger vs S Williams |
| 0-1 | 55 |
2001 |
10th Monarch Assurance | C02 French, Advance |
| 42. S Williams vs K Mah |
| ½-½ | 13 |
2001 |
SWYM | D10 Queen's Gambit Declined Slav |
| 43. M Lyell vs S Williams |
| 0-1 | 33 |
2001 |
Smith & Williamson ch-GBR | C02 French, Advance |
| 44. S Williams vs Y Yakovich |
| 0-1 | 30 |
2001 |
10th Monarch Assurance | A28 English |
| 45. J Vigus vs S Williams |
| ½-½ | 34 |
2001 |
SWYM | A10 English |
| 46. S Williams vs J Gallagher |
 | 0-1 | 21 |
2001 |
4NCL | E73 King's Indian |
| 47. S Williams vs J Gallagher |
| ½-½ | 35 |
2001 |
Smith & Williamson ch-GBR | E70 King's Indian |
| 48. M Simons vs S Williams |
| ½-½ | 9 |
2001 |
Smith & Williamson ch-GBR | A40 Queen's Pawn Game |
| 49. S Williams vs S Bousbouras |
 | 1-0 | 52 |
2001 |
10th Monarch Assurance | A13 English |
| 50. O Gladyszev vs S Williams |
| ½-½ | 12 |
2001 |
SWYM | A81 Dutch |