Alexander Kersten
| White | Black | |
|---|---|---|
| Frank Roberg | Alexander Kersten | View |
| Alexander Kersten | Peter, Dr. Kopp | View |
| Dirk, Dr. Hennig | Alexander Kersten | View |
| Alexander Kersten | Martin Wordemann | View |
| Peter J J De Jong | Alexander Kersten | View |
| White | Black | |
|---|---|---|
| Frank Roberg | Alexander Kersten | View |
| Alexander Kersten | Peter, Dr. Kopp | View |
| Dirk, Dr. Hennig | Alexander Kersten | View |
| Alexander Kersten | Martin Wordemann | View |
| Peter J J De Jong | Alexander Kersten | View |