H. Sibbing
| White | Black | |
|---|---|---|
| Weyerstrass | H. Sibbing | View |
| Weyerstrass | H. Sibbing | View |
| H. Sibbing | Weyerstrass | View |
| Weyerstrass | H. Sibbing | View |
| Weyerstrass | H. Sibbing | View |
| White | Black | |
|---|---|---|
| Weyerstrass | H. Sibbing | View |
| Weyerstrass | H. Sibbing | View |
| H. Sibbing | Weyerstrass | View |
| Weyerstrass | H. Sibbing | View |
| Weyerstrass | H. Sibbing | View |