Game |
| Result | Moves |
Year | Event/Locale | Opening |
51. S Zeidler vs Fedorov |
 | 0-1 | 30 | 2002 | Bled Olympiad | B23 Sicilian, Closed |
52. B Khatanbaatar vs S Zeidler |
| 0-1 | 69 | 2002 | Bled Olympiad | B01 Scandinavian |
53. F Garmendez Gonzalez vs S Zeidler |
| 1-0 | 74 | 2002 | Bled Olympiad | B01 Scandinavian |
54. B Lalic vs S Zeidler |
| 1-0 | 24 | 2002 | 4NCL | A85 Dutch, with c4 & Nc3 |
55. S Zeidler vs Nyback |
| 0-1 | 48 | 2003 | European Team Championship | B07 Pirc |
56. V Georgiev vs S Zeidler |
| 1-0 | 30 | 2003 | European Team Championship | A87 Dutch, Leningrad, Main Variation |
57. S Zeidler vs J V Gunnarsson |
| ½-½ | 32 | 2003 | European Team Championship | B23 Sicilian, Closed |
58. K Haznedaroglu vs S Zeidler |
| 1-0 | 42 | 2003 | European Team Championship | B01 Scandinavian |
59. S Zeidler vs Kotronias |
| 0-1 | 49 | 2003 | European Team Championship | B23 Sicilian, Closed |
60. P Genov vs S Zeidler |
| 1-0 | 41 | 2003 | European Team Championship | A81 Dutch |
61. J Shaw vs S Zeidler |
| 1-0 | 26 | 2003 | European Team Championship | B01 Scandinavian |
62. T Espig vs S Zeidler |
| ½-½ | 19 | 2005 | Warsaw AIG Life rapid 3rd-4th | D37 Queen's Gambit Declined |
63. S Zeidler vs Plaskett |
| 0-1 | 37 | 2006 | 4NCL 2006/07 | B23 Sicilian, Closed |
64. A G Ashton vs S Zeidler |
| ½-½ | 57 | 2007 | 4NCL 2006-07 | B01 Scandinavian |
65. S Zeidler vs I Snape |
| ½-½ | 30 | 2007 | 4NCL 2006-07 | B23 Sicilian, Closed |
66. S Zeidler vs D Guy |
| 1-0 | 36 | 2007 | 53rd Welsh Championship | B23 Sicilian, Closed |
67. A Spice vs S Zeidler |
| 1-0 | 36 | 2007 | 53rd Welsh Championship | A02 Bird's Opening |
68. S Zeidler vs D Jameson |
 | ½-½ | 69 | 2007 | 53rd Welsh Championship | B12 Caro-Kann Defense |
69. S D Cunliffe vs S Zeidler |
| 0-1 | 36 | 2007 | 53rd Welsh Championship | B01 Scandinavian |
70. S Zeidler vs J Trevelyan |
| ½-½ | 37 | 2007 | 53rd Welsh Championship | B00 Uncommon King's Pawn Opening |
71. S Zeidler vs D Sully |
| 1-0 | 55 | 2007 | 53rd Welsh Championship | C01 French, Exchange |
72. R Van Kemenade vs S Zeidler |
| 0-1 | 33 | 2007 | 53rd Welsh Championship | A85 Dutch, with c4 & Nc3 |
73. S Zeidler vs R Van Kemenade |
| 1-0 | 24 | 2008 | Welsh Championship | C42 Petrov Defense |
74. A Spice vs S Zeidler |
| 0-1 | 23 | 2008 | Welsh Championship | A00 Uncommon Opening |
75. S Zeidler vs L Williams |
| ½-½ | 52 | 2008 | Welsh Championship | B23 Sicilian, Closed |