| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. N Vojko vs W Mack |
| 0-1 | 19 | 1986 | Balatonbereny Open | E30 Nimzo-Indian, Leningrad |
| 2. R Wurdits vs W Mack |
| 1-0 | 31 | 1986 | Balatonbereny Open | B41 Sicilian, Kan |
| 3. W Mack vs J Nagy |
| 0-1 | 33 | 1986 | Balatonbereny Open | B27 Sicilian |
| 4. M Schumi vs W Mack |
| 1-0 | 42 | 1986 | Balatonbereny Open | B42 Sicilian, Kan |
| 5. O Brendel vs W Mack |
| 1-0 | 26 | 1986 | FRG Open Championship | B42 Sicilian, Kan |
| 6. T Heinl vs W Mack |
| 1-0 | 47 | 2000 | Wurttemberg Candidatos | C55 Two Knights Defense |
| 7. A Saric vs W Mack |
| 1-0 | 58 | 2006 | Pula Open | A42 Modern Defense, Averbakh System |
| 8. U Krstic vs W Mack |
| 1-0 | 23 | 2006 | Pula Open | B06 Robatsch |
| 9. W Mack vs N Fercec |
| ½-½ | 46 | 2007 | Pula Open | A07 King's Indian Attack |
| 10. W Mack vs P Andrason |
| 1-0 | 48 | 2011 | Reykjavik Open | A15 English |
| 11. S Williams vs W Mack |
| 1-0 | 45 | 2011 | Reykjavik Open | A41 Queen's Pawn Game (with ...d6) |
| 12. W Mack vs H Brynjarsson |
 | 1-0 | 29 | 2011 | Reykjavik Open | A25 English |
| 13. H S Gretarsson vs W Mack |
| 0-1 | 59 | 2011 | Reykjavik Open | A41 Queen's Pawn Game (with ...d6) |
| 14. W Mack vs S Grover |
| ½-½ | 58 | 2011 | Reykjavik Open | A00 Uncommon Opening |
| 15. C D'Amore vs W Mack |
| 1-0 | 40 | 2011 | Reykjavik Open | B06 Robatsch |
| 16. W Mack vs T Thorhallsson |
| 1-0 | 51 | 2011 | Reykjavik Open | A13 English |
| 17. B Thorfinnsson vs W Mack |
| 1-0 | 72 | 2011 | Reykjavik Open | A42 Modern Defense, Averbakh System |
| 18. W Mack vs H Ziska |
| 0-1 | 18 | 2011 | Reykjavik Open | A10 English |
| 19. W Mack vs L'Ami |
| ½-½ | 54 | 2011 | Rilton Cup 2011/12 | A15 English |
| 20. A S Rasmussen vs W Mack |
| 0-1 | 40 | 2011 | Rilton Cup 2011/12 | C10 French |
| 21. W Mack vs T Bakre |
| 0-1 | 20 | 2011 | Rilton Cup 2011/12 | A20 English |
| 22. J O Fries-Nielsen vs W Mack |
| ½-½ | 41 | 2011 | Rilton Cup 2011/12 | A43 Old Benoni |
| 23. M Hebden vs W Mack |
| 1-0 | 27 | 2012 | Guernsey Open | A00 Uncommon Opening |
| 24. W Mack vs P Lindgren |
| 0-1 | 48 | 2012 | Rilton Cup 2011/12 | A11 English, Caro-Kann Defensive System |
| 25. R Holving vs W Mack |
| ½-½ | 69 | 2012 | Rilton Cup 2011/12 | A02 Bird's Opening |
Kibitzing
