Game |
| Result | Moves |
Year | Event/Locale | Opening |
26. P Viner vs W Leonhardt |
| 1-0 | 35 | 1963 | Australian Championship 1962/63 | D11 Queen's Gambit Declined Slav |
27. W Leonhardt vs G G Haase |
| 1-0 | 35 | 1963 | Australian Championship 1962/63 | C46 Three Knights |
28. W Leonhardt vs W Geus |
| 0-1 | 42 | 1963 | Australian Championship 1962/63 | C49 Four Knights |
29. A Pope vs W Leonhardt |
| 1-0 | 25 | 1966 | City of Fremantle ch | B28 Sicilian, O'Kelly Variation |
30. W Leonhardt vs G Trundle |
| ½-½ | 26 | 1966 | New Zealand Championship 1966/67 | B07 Pirc |
31. A Flatow vs W Leonhardt |
| 1-0 | 38 | 1967 | New Zealand Championship 1966/67 | B40 Sicilian |
32. W Leonhardt vs O Sarapu |
 | 0-1 | 42 | 1967 | New Zealand Championship 1966/67 | A48 King's Indian |
33. W Leonhardt vs A Day |
| 1-0 | 32 | 1976 | Jenkins Trophy Match | A45 Queen's Pawn Game |
34. P Garbett vs W Leonhardt |
 | 1-0 | 34 | 1976 | Northshore Club Championship | B50 Sicilian |
35. W Leonhardt vs O Ferreira |
 | 0-1 | 36 | 1976 | Haifa Olympiad | A56 Benoni Defense |
36. W Leonhardt vs Y Ozaki |
| ½-½ | 41 | 1976 | Haifa Olympiad | A60 Benoni Defense |
37. E Mortensen vs W Leonhardt |
| 1-0 | 44 | 1976 | Haifa Olympiad | A28 English |
38. W Leonhardt vs P W Power |
| ½-½ | 41 | 1976 | New Zealand Championship 1976/77 | E00 Queen's Pawn Game |
39. T H Stonehouse vs W Leonhardt |
| 1-0 | 48 | 1976 | New Zealand Championship 1976/77 | B96 Sicilian, Najdorf |
40. W Leonhardt vs O Sarapu |
| 0-1 | 40 | 1976 | New Zealand Championship 1976/77 | A57 Benko Gambit |
41. K Jensen vs W Leonhardt |
| 1-0 | 27 | 1976 | New Zealand Championship 1976/77 | B20 Sicilian |
42. W Leonhardt vs L Aptekar |
| 0-1 | 35 | 1976 | New Zealand Championship 1976/77 | E70 King's Indian |
43. L Cornford vs W Leonhardt |
| 1-0 | 50 | 1977 | New Zealand Championship 1976/77 | B95 Sicilian, Najdorf, 6...e6 |
44. W Leonhardt vs M Whaley |
| 0-1 | 36 | 1977 | New Zealand Championship 1976/77 | E60 King's Indian Defense |
45. A Carpinter vs W Leonhardt |
| ½-½ | 70 | 1977 | New Zealand Championship 1976/77 | D51 Queen's Gambit Declined |
46. W Leonhardt vs P Garbett |
| 0-1 | 52 | 1977 | New Zealand Championship 1976/77 | E16 Queen's Indian |
47. W Leonhardt vs B R Anderson |
| 1-0 | 47 | 1977 | New Zealand Championship 1976/77 | A65 Benoni, 6.e4 |
48. K W Lynn vs W Leonhardt |
| 0-1 | 29 | 1977 | New Zealand Championship 1976/77 | D00 Queen's Pawn Game |
49. M Howard vs W Leonhardt |
| 0-1 | 27 | 1977 | Auckland University Open Tt | E00 Queen's Pawn Game |
50. W Leonhardt vs D Beach |
| 0-1 | 27 | 1978 | North Shore vs Civic Match | D35 Queen's Gambit Declined |