Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. C Zuidema vs R Hartoch |
| ½-½ | 15 | 1970 | Dutch Championship | B46 Sicilian, Taimanov Variation |
2. J Kort vs R Hartoch |
| ½-½ | 14 | 1970 | Dutch Championship | B46 Sicilian, Taimanov Variation |
3. Janosevic vs R Hartoch |
| 1-0 | 52 | 1970 | Amsterdam IBM | B46 Sicilian, Taimanov Variation |
4. L Zinn vs R Hartoch |
| ½-½ | 17 | 1970 | Siegen Olympiad qual-3 | B46 Sicilian, Taimanov Variation |
5. K Klundt vs R Hartoch |
| 1-0 | 28 | 1970 | Bad Pyrmont | B46 Sicilian, Taimanov Variation |
6. J Kostro vs R Hartoch |
| ½-½ | 30 | 1971 | Hoogovens-B | B46 Sicilian, Taimanov Variation |
7. H Ree vs R Hartoch |
| ½-½ | 13 | 1971 | Dutch Championship | B46 Sicilian, Taimanov Variation |
8. Browne vs R Hartoch |
| 1-0 | 42 | 1971 | Amsterdam IBM | B46 Sicilian, Taimanov Variation |
9. J Penrose vs R Hartoch |
| ½-½ | 22 | 1971 | England - Netherlands | B46 Sicilian, Taimanov Variation |
10. Browne vs R Hartoch |
 | 0-1 | 59 | 1972 | Hoogovens | B46 Sicilian, Taimanov Variation |
11. E Scholl vs R Hartoch |
| ½-½ | 16 | 1972 | Dutch Championship | B46 Sicilian, Taimanov Variation |
12. A Olsson vs R Hartoch |
| 1-0 | 32 | 1972 | Skopje Olympiad Final-A | B46 Sicilian, Taimanov Variation |
13. R Calvo Minguez vs R Hartoch |
| 1-0 | 57 | 1973 | 2nd Maspalomas tt | B46 Sicilian, Taimanov Variation |
14. N Cortlever vs R Hartoch |
 | 1-0 | 35 | 1973 | Amsterdam VAS Jubilee | B46 Sicilian, Taimanov Variation |
15. C Zuidema vs R Hartoch |
| ½-½ | 31 | 1973 | Dutch Championship | B46 Sicilian, Taimanov Variation |
16. P van der Weide vs R Hartoch |
| 1-0 | 41 | 1973 | Dutch Championship | B46 Sicilian, Taimanov Variation |
17. K Hulak vs R Hartoch |
| 1-0 | 40 | 1973 | Zagreb | B46 Sicilian, Taimanov Variation |
18. V Bukal Sr vs R Hartoch |
| ½-½ | 16 | 1973 | Zagreb | B46 Sicilian, Taimanov Variation |
19. Romanishin vs R Hartoch |
| ½-½ | 26 | 1973 | Amsterdam IBM-B | B46 Sicilian, Taimanov Variation |
20. G Ligterink vs R Hartoch |
| 0-1 | 40 | 1974 | Dutch Championship | B46 Sicilian, Taimanov Variation |