Game |
| Result | Moves |
Year | Event/Locale | Opening |
26. W Mack vs H Ziska |
 | 0-1 | 18 | 2011 | Reykjavik Open | A10 English |
27. W Mack vs L'Ami |
| ½-½ | 54 | 2011 | Rilton Cup 2011/12 | A15 English |
28. A S Rasmussen vs W Mack |
| 0-1 | 40 | 2011 | Rilton Cup 2011/12 | C10 French |
29. W Mack vs T Bakre |
| 0-1 | 20 | 2011 | Rilton Cup 2011/12 | A20 English |
30. J O Fries-Nielsen vs W Mack |
| ½-½ | 41 | 2011 | Rilton Cup 2011/12 | A43 Old Benoni |
31. M Hebden vs W Mack |
| 1-0 | 27 | 2012 | Guernsey Open | A00 Uncommon Opening |
32. W Mack vs P Lindgren |
| 0-1 | 48 | 2012 | Rilton Cup 2011/12 | A11 English, Caro-Kann Defensive System |
33. R Holving vs W Mack |
| ½-½ | 69 | 2012 | Rilton Cup 2011/12 | A02 Bird's Opening |
34. W Mack vs D Isetoft |
| 1-0 | 64 | 2012 | Rilton Cup 2011/12 | A15 English |
35. T Kenneskog vs W Mack |
| 1-0 | 47 | 2012 | Rilton Cup 2011/12 | A40 Queen's Pawn Game |
36. J Olund vs W Mack |
| 0-1 | 20 | 2012 | Rilton Cup 2011/12 | A40 Queen's Pawn Game |
37. H Berggren Torell vs W Mack |
| 1-0 | 73 | 2012 | Rilton Cup 2012/13 | B06 Robatsch |
38. W Mack vs J Olund |
| 0-1 | 33 | 2012 | Rilton Cup 2012/13 | B06 Robatsch |
39. I Andriyanov vs W Mack |
| 1-0 | 61 | 2012 | Rilton Cup 2012/13 | D78 Neo-Grunfeld, 6.O-O c6 |
40. B Adler vs W Mack |
| 0-1 | 46 | 2012 | Rilton Cup 2012/13 | B06 Robatsch |
41. W Mack vs F Zulfic |
| 1-0 | 53 | 2013 | Rilton Cup 2012/13 | A16 English |
42. W Mack vs S Bryntze |
| 0-1 | 43 | 2013 | Rilton Cup 2012/13 | A13 English |
43. E Jonsson vs W Mack |
| ½-½ | 26 | 2013 | Rilton Cup 2012/13 | B06 Robatsch |
44. W Mack vs M Eriksen |
| 0-1 | 47 | 2013 | Rilton Cup 2012/13 | A15 English |
45. M Mattsson vs W Mack |
| 1-0 | 33 | 2013 | Rilton Cup 2012/13 | B06 Robatsch |
46. T Hillarp Persson vs W Mack |
| 1-0 | 58 | 2017 | 43rd Guernsey Open | A40 Queen's Pawn Game |