| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. L Kerkhoff vs N Karaklajic |
| 0-1 | 48 | 1966 | Parcetic Memorial | C56 Two Knights |
| 27. F Blatny vs L Kerkhoff |
| 0-1 | 32 | 1966 | Parcetic Memorial | C71 Ruy Lopez |
| 28. L Kerkhoff vs M Radojevic |
| 1-0 | 42 | 1966 | Parcetic Memorial | B33 Sicilian |
| 29. R Maric vs L Kerkhoff |
| ½-½ | 16 | 1966 | Parcetic Memorial | C71 Ruy Lopez |
| 30. L Kerkhoff vs D Minic |
| 0-1 | 33 | 1966 | Parcetic Memorial | B28 Sicilian, O'Kelly Variation |
| 31. I Buljovcic vs L Kerkhoff |
| ½-½ | 25 | 1966 | Parcetic Memorial | C50 Giuoco Piano |
| 32. N Minev vs L Kerkhoff |
| ½-½ | 18 | 1966 | Parcetic Memorial | C46 Three Knights |
| 33. L Kerkhoff vs B Malich |
| 0-1 | 53 | 1966 | Parcetic Memorial | B82 Sicilian, Scheveningen |
| 34. F Kuijpers vs L Kerkhoff |
| 0-1 | 35 | 1969 | NED-chT | E80 King's Indian, Samisch Variation |
| 35. P van der Weide vs L Kerkhoff |
 | ½-½ | 60 | 1970 | Dutch Championship | C28 Vienna Game |
| 36. T de Ruiter vs L Kerkhoff |
| ½-½ | 12 | 1970 | Dutch Championship | A03 Bird's Opening |
| 37. L Kerkhoff vs J Marcus |
| 0-1 | 47 | 1970 | Dutch Championship | B18 Caro-Kann, Classical |
| 38. J van Baarle vs L Kerkhoff |
| ½-½ | 21 | 1970 | Dutch Championship | E97 King's Indian |
| 39. L Kerkhoff vs J Kort |
| ½-½ | 47 | 1970 | Dutch Championship | C44 King's Pawn Game |
| 40. E Scholl vs L Kerkhoff |
| 0-1 | 42 | 1970 | Dutch Championship | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 41. L Kerkhoff vs K Langeweg |
| 0-1 | 40 | 1970 | Dutch Championship | B49 Sicilian, Taimanov Variation |
| 42. R Hartoch vs L Kerkhoff |
| ½-½ | 32 | 1970 | Dutch Championship | E60 King's Indian Defense |
| 43. L Kerkhoff vs A Jongsma |
| ½-½ | 19 | 1970 | Dutch Championship | A07 King's Indian Attack |
| 44. C Zuidema vs L Kerkhoff |
| 1-0 | 30 | 1970 | Dutch Championship | C26 Vienna |
| 45. L Kerkhoff vs J Vogel |
| ½-½ | 40 | 1970 | Dutch Championship | C00 French Defense |
| 46. Petursson vs L Kerkhoff |
| 1-0 | 42 | 1979 | 3rd Lloyds Bank Masters Open | E92 King's Indian |
| 47. L Kerkhoff vs M Yeo |
| 1-0 | 34 | 1979 | 3rd Lloyds Bank Masters Open | C71 Ruy Lopez |
| 48. L Kerkhoff vs L Leow |
| 0-1 | 59 | 1979 | 3rd Lloyds Bank Masters Open | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 49. A Stebbings vs L Kerkhoff |
| ½-½ | 21 | 1979 | 3rd Lloyds Bank Masters Open | C74 Ruy Lopez, Modern Steinitz Defense |
| 50. R Harman vs L Kerkhoff |
| 1-0 | 27 | 1979 | 3rd Lloyds Bank Masters Open | C46 Three Knights |
Kibitzing
