Coenraad Zuidema
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| NED-SWE m | ??/??/1975 | 0 | Netherlands |
| Hoogovens M-4K | 01/??/1974 | 0 | Netherlands |
| Amsterdam Sen-Jun | 03/??/1973 | 0 | Netherlands |
| NED-ch playoff | ??/??/1973 | 0 | Netherlands |
Coenraad Zuidema Opening Repertoire with White pieces
| ECO | Opening | Games |
| C16 | French, Winawer, advance variation | 8 games |
| B06 | Robatsch (modern) defence | 7 games |
| B93 | Sicilian, Najdorf, 6.f4 | 7 games |
| B17 | Caro-Kann, Steinitz variation | 6 games |
Coenraad Zuidema Opening Repertoire with Black pieces
| ECO | Opening | Games |
| C65 | Ruy Lopez, Berlin defence | 11 games |
| D55 | Queen's Gambit Declined, 6.Nf3 | 6 games |
| C84 | Ruy Lopez, closed defence | 6 games |
| A07 | Reti, King's Indian attack (Barcza system) | 6 games |


Netherlands