| Year | Event | Games | Winner | Info |
| 1961 | Amsterdam IBM | 66 | Langeweg | info |
| 1961 | Beverwijk I | 45 | Larsen, Ivkov | info |
| 1961 | Hilversum m | 6 | Vd Bosch- V Oosterom | |
| 1961 | The Hague Wch-jr | 232 | Parma | info |
| 1961 | Utrecht PAM | 45 | O'Kelly | info |
| 1961 | Zevenaar | 120 | Matanovic | info |
| 1962 | Amsterdam IBM I | 66 | Tan, Czerniak | |
| 1962 | Beverwijk I | 45 | Trifunovic | info |
| 1962 | Beverwijk II a | 45 / 1 | Parma | info |
| 1962 | Beverwijk II b | 45 | Gereben | info |
| 1962 | The Hague tt NED-RUS | 12 | Russia | |
| 1963 | Amsterdam GAK | 15 / 5 | Botvinnik | info |
| 1963 | Amsterdam IBM I | 45 | Portisch | |
| 1963 | Amsterdam IBM II | 45 / 1 | Lehmann | |
| 1963 | Beverwijk I | 153 | Donner | info |
| 1963 | Beverwijk II a | 45 | Zuidema | info |
| 1963 | Beverwijk II b | 45 | Kuijpers | info |
| 1963 | Enschede zt | 136 | Gligoric | info |
| 1963 | The Hague ch-NED | 45 / 32 | Kuijpers | info |
| 1964 | Amsterdam IBM I | 45 | Larsen | info |
| 1964 | Amsterdam IBM II | 45 | Karaklajic | |
| 1964 | Amsterdam izt | 279 | Smyslov, Spassky, Larsen,Tal | info |
| 1964 | Amsterdam sf ch-NED | 55 / 42 | ||
| 1964 | Beverwijk I | 120 | Keres, Nei | info |
| 1964 | Beverwijk II | 66 / 1 | Lehmann | info |
| 1965 | Amsterdam IBM I | 45 | Donner | info |
| 1965 | Amsterdam IBM II | 45 | Szilagyi | |
| 1965 | Beverwijk I | 120 | Geller, Portisch | info |
| 1965 | Beverwijk II | 66 | Van Geet | info |
| 1965 | Noordwijk | 28 | Botvinnik | info |
| 1966 | Amsterdam IBM I | 45 | Botvinnik | info |
| 1966 | Amsterdam IBM II | 45 | Enevoldsen,J | info |
| 1966 | Beverwijk I | 120 | Polugaevsky | info |
| 1966 | Beverwijk II | 66 | Ghitescu | info |
| 1966 | Beverwijk III | 6 | Bouwmeester | info |
| 1966 | Eersel | 15 | Ivkov | info |
| 1966 | The Hague zt | 140 | Gligoric | info |
| 1967 | Amsterdam IBM I | 66 / 1 | Portisch | |
| 1967 | Amsterdam IBM II | 45 | Marovic | |
| 1967 | Beverwijk I | 120 | Spassky | |
| 1967 | Beverwijk II | 120 | Karaklajic | |
| 1967 | Eersel | 24 | Cornelis | info |
| 1967 | Groningen ch-EU jr | 112 | Karpov | |
| 1967 | Groningen sim | 15 | ||
| 1967 | Zierikzee ch-NED | 66 | Bouwmeester, Ree | info |
| 1968 | Amsterdam IBM I | 120 | Kavalek | info |
| 1968 | Amsterdam IBM II | 66 | Tatai | info |
| 1968 | Amsterdam m | 8 | Kortchnoi | |
| 1968 | Eersel m | 10 | Gligoric | |
| 1968 | Rotterdam m | 4 | Timman - Ree | info |
| 1968 | The Hague | 28 | Kavalek | info |
| 1968 | Wijk aan Zee I | 120 | Kortchnoi | info |
| 1968 | Wijk aan Zee II | 120 | Doda | info |
| 1969 | Amsterdam IBM I | 120 | Portisch | |
| 1969 | Amsterdam IBM II | 66 | Csom | |
| 1969 | Eersel m1 | 8 | Larsen | |
| 1969 | Eersel m2 | 9 | Kavalek | |
| 1969 | Groningen ch-EU jr | 160 | Maeder | |
| 1969 | Leeuwarden ch-NED | 66 / 2 | Langeweg | |
| 1969 | Wijk aan Zee I | 120 | Geller | |
| 1969 | Wijk aan Zee II | 120 | Kurajica | |
| 1970 | Amsterdam IBM I | 120 | Polugaevsky | info |
| 1970 | Amsterdam IBM II | 66 | Adorjan | info |
| 1970 | Leeuwardem m ch-NED | 7 | Scholl | |
| 1970 | Leeuwarden ch-NED | 66 | Scholl, Zuidema | |
| 1970 | Leiden | 24 | Spassky | info |
| 1970 | Vlissingen tt NED-GBR | 20 | ||
| 1970 | Wijk aan Zee I | 120 | Taimanov | info |
| 1970 | Wijk aan Zee II | 120 | Andersson | |
| 1970 | Wijk aan Zee III | 6 | Krabbé |