| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Dehn vs S Beukema |
| 0-1 | 34 | 2012 | Groningen Open | A40 Queen's Pawn Game |
| 27. M Grigoryan vs M Dehn |
| 0-1 | 46 | 2012 | Groningen Open | E71 King's Indian, Makagonov System (5.h3) |
| 28. M Dehn vs M de Jong |
| 1-0 | 54 | 2012 | Groningen Open | D02 Queen's Pawn Game |
| 29. M Dehn vs S Arslanov |
| 0-1 | 21 | 2012 | Groningen Open | A41 Queen's Pawn Game (with ...d6) |
| 30. M Dehn vs C Garcia Palermo |
| 0-1 | 72 | 2013 | Groningen Chess Festival | A46 Queen's Pawn Game |
| 31. J van Foreest vs M Dehn |
 | 1-0 | 29 | 2013 | Groningen Chess Festival | B07 Pirc |
| 32. M Dehn vs J Gerlagh |
| 1-0 | 66 | 2013 | Groningen Chess Festival | D02 Queen's Pawn Game |
| 33. C Stolwijk vs M Dehn |
| 0-1 | 68 | 2013 | Groningen Chess Festival | B01 Scandinavian |
| 34. M Dehn vs M Efroimski |
| 0-1 | 29 | 2013 | Groningen Chess Festival | A48 King's Indian |
| 35. M Senders vs M Dehn |
| 0-1 | 58 | 2013 | Groningen Chess Festival | B15 Caro-Kann |
| 36. M Dehn vs B Burg |
| ½-½ | 47 | 2013 | Groningen Chess Festival | A80 Dutch |
| 37. S Estremera Panos vs M Dehn |
| 1-0 | 38 | 2013 | Groningen Chess Festival | A43 Old Benoni |
| 38. M Dehn vs F Bellia |
| 0-1 | 24 | 2013 | Groningen Chess Festival | D02 Queen's Pawn Game |
Kibitzing
