Learn How to Spot Mate in 1: Pin Tactic
This middlegame puzzle comes from the Four Knights Game and shows how a single tactical idea can outweigh material. The key feature is king safety: the opposing king is boxed in, while key defenders are overloaded or pinned. In positions like this, a direct forcing move can end the game immediately if it uses the open line toward the king and removes the last escape square. Always check for checks first when the enemy king is exposed.