| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. L Hortensius vs A Clemens |
| 0-1 | 51 | 2009 | 13th Unive Tournament (Open) | B43 Sicilian, Kan, 5.Nc3 |
| 27. A Clemens vs J Kraai |
| 0-1 | 54 | 2009 | 13th Unive Tournament (Open) | D05 Queen's Pawn Game |
| 28. A Fehr vs A Clemens |
| 0-1 | 36 | 2009 | 13th Unive Tournament (Open) | A10 English |
| 29. A Clemens vs P Genov |
| 0-1 | 66 | 2009 | 13th Unive Tournament (Open) | A10 English |
| 30. T Kasparova vs A Clemens |
| ½-½ | 28 | 2009 | 13th Unive Tournament (Open) | B42 Sicilian, Kan |
| 31. A Clemens vs J Hummel |
| ½-½ | 32 | 2009 | 13th Unive Tournament (Open) | D30 Queen's Gambit Declined |
| 32. R Hoffman vs A Clemens |
| ½-½ | 39 | 2009 | 13th Unive Tournament (Open) | D85 Grunfeld |
| 33. A Clemens vs A Pijpers |
| 1-0 | 31 | 2009 | 13th Unive Tournament (Open) | D12 Queen's Gambit Declined Slav |
| 34. H Vedder vs A Clemens |
| 1-0 | 39 | 2009 | 13th Unive Tournament (Open) | B43 Sicilian, Kan, 5.Nc3 |
| 35. D Brandenburg vs A Clemens |
 | ½-½ | 74 | 2011 | Groningen Open-A | B22 Sicilian, Alapin |
| 36. A Clemens vs V Durarbayli |
| 0-1 | 40 | 2011 | Groningen Open-A | A57 Benko Gambit |
| 37. N Bijlsma vs A Clemens |
| ½-½ | 41 | 2011 | Groningen Open-A | B42 Sicilian, Kan |
| 38. A Clemens vs L Cako |
| ½-½ | 33 | 2011 | Groningen Open-A | E15 Queen's Indian |
| 39. P Theulings vs A Clemens |
| 0-1 | 25 | 2011 | Groningen Open-A | E63 King's Indian, Fianchetto, Panno Variation |
| 40. A Clemens vs B Firat |
| ½-½ | 50 | 2011 | Groningen Open-A | D93 Grunfeld, with Bf4 & e3 |
| 41. M de Jong vs A Clemens |
| ½-½ | 65 | 2011 | Groningen Open-A | B18 Caro-Kann, Classical |
| 42. A Clemens vs B Pel |
| ½-½ | 49 | 2011 | Groningen Open-A | A41 Queen's Pawn Game (with ...d6) |
| 43. A Clemens vs F van Assendelft |
| 0-1 | 60 | 2011 | Groningen Open-A | E11 Bogo-Indian Defense |
| 44. A Clemens vs V Meijers |
| ½-½ | 58 | 2012 | 35th Taminco Open | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 45. N Ondersteijn vs A Clemens |
| 1-0 | 45 | 2012 | 35th Taminco Open | D85 Grunfeld |
| 46. A Clemens vs M Klenburg |
| 0-1 | 46 | 2012 | 35th Taminco Open | A41 Queen's Pawn Game (with ...d6) |
| 47. N Grandelius vs A Clemens |
| 1-0 | 40 | 2012 | 16th Unive Open | A37 English, Symmetrical |
| 48. A Clemens vs S Gieben |
| 1-0 | 27 | 2012 | 16th Unive Open | A15 English |
| 49. Ankit Majhi vs A Clemens |
| ½-½ | 37 | 2012 | 16th Unive Open | B23 Sicilian, Closed |
| 50. Timman vs A Clemens |
| 1-0 | 29 | 2012 | 16th Unive Open | B81 Sicilian, Scheveningen, Keres Attack |
Kibitzing
