
Solution

1. Nb6 Ra7 2. Bb8 traps and wins the black rook.
Note that the black knight on d7 is pinned by the white d1-rook, which makes 2… Nxb8 impossible.
Structured Chess Training
1. Nb6 Ra7 2. Bb8 traps and wins the black rook.
Note that the black knight on d7 is pinned by the white d1-rook, which makes 2… Nxb8 impossible.