| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Shredder vs Zappa |
 | 0-1 | 41 |
2005 |
WCCC | B76 Sicilian, Dragon, Yugoslav Attack |
| 27. Zappa vs Diep |
| ½-½ | 38 |
2006 |
WCCC 2006 | A45 Queen's Pawn Game |
| 28. Zappa vs Spike |
| 0-1 | 60 |
2006 |
CEGT 40/120 (AMD64 x2 4200+) | D43 Queen's Gambit Declined Semi-Slav |
| 29. Zappa vs Jonny |
 | ½-½ | 160 |
2006 |
WCCC 2006 | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 30. IsiChess vs Zappa |
| ½-½ | 34 |
2006 |
WCCC 2006 | B76 Sicilian, Dragon, Yugoslav Attack |
| 31. Shredder vs Zappa |
 | ½-½ | 50 |
2006 |
WCCC 2006 | B76 Sicilian, Dragon, Yugoslav Attack |
| 32. Zappa vs Spike |
| 1-0 | 49 |
2006 |
WCCC 2006 | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 33. Rybka vs Zappa |
 | ½-½ | 55 |
2006 |
WCCC 2006 | D46 Queen's Gambit Declined Semi-Slav |
| 34. Ikarus vs Zappa |
 | 0-1 | 70 |
2006 |
WCCC 2006 | B22 Sicilian, Alapin |
| 35. Zappa vs Chiron |
 | 1-0 | 35 |
2006 |
WCCC 2006 | B00 Uncommon King's Pawn Opening |
| 36. Zappa vs Junior |
 | ½-½ | 55 |
2006 |
WCCC 2006 | E15 Queen's Indian |
| 37. Lion vs Zappa |
 | 0-1 | 54 |
2006 |
WCCC 2006 | B77 Sicilian, Dragon, Yugoslav Attack |
| 38. Crafty vs Zappa |
| ½-½ | 64 |
2006 |
WCCC 2006 | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 39. Zappa vs Rybka |
 | 1-0 | 129 |
2007 |
Clash of the Computer Titans | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 40. Rybka vs Zappa |
 | ½-½ | 107 |
2007 |
15th World Computer Chess Championship | C10 French |
| 41. Jonny vs Zappa |
| ½-½ | 60 |
2007 |
15th World Computer Chess Championship | E12 Queen's Indian |
| 42. Rybka vs Zappa |
 | 1-0 | 71 |
2007 |
Clash of the Computer Titans | C84 Ruy Lopez, Closed |
| 43. Zappa vs Loop |
| 1-0 | 53 |
2007 |
15th World Computer Chess Championship | B24 Sicilian, Closed |
| 44. Zappa vs Rybka |
 | 1-0 | 66 |
2007 |
Clash of the Computer Titans | C91 Ruy Lopez, Closed |
| 45. Zappa vs The Baron |
| 1-0 | 53 |
2007 |
CCT9 | D00 Queen's Pawn Game |
| 46. Diep vs Zappa |
| 0-1 | 57 |
2007 |
15th World Computer Chess Championship | D51 Queen's Gambit Declined |
| 47. Zappa vs Rybka |
 | ½-½ | 66 |
2007 |
Clash of the Computer Titans | B35 Sicilian, Accelerated Fianchetto, Modern Variation with Bc4 |
| 48. micro-Max vs Zappa |
 | 0-1 | 40 |
2007 |
15th World Computer Chess Championship | C47 Four Knights |
| 49. Rybka vs Zappa |
 | 1-0 | 110 |
2007 |
Clash of the Computer Titans | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 50. Zappa vs HIARCS |
 | 0-1 | 50 |
2007 |
CCT9 | B97 Sicilian, Najdorf |