BeginnerRelated: Pin
Win the Pinned Piece
Black's knight looks safe on e6 — but look at what's behind it.
Your Move
White to move. Find the simple capture that wins a piece for free.
Solution: 1. dxe6
The knight on e6 is pinned to the king by White's rook on e1 — it is illegal for it to move off the e-file. That means dxe6 simply wins the knight outright; there is no legal way for Black to recapture or prevent the capture.