Black to move
| Date: | 1905 |
| White: | Den |
| Black: | Perwago |
| Combination strength: | 5 |
| Game section | Middle game |
| Decisive material advantage | - |
| Mate combination | Defensive pieces in the king position |
| Date: | 1905 |
| White: | Den |
| Black: | Perwago |
| Combination strength: | 5 |
| Game section | Middle game |
| Decisive material advantage | - |
| Mate combination | Defensive pieces in the king position |