Learn How to Spot Corner Mate: Mate in 1
This middlegame puzzle shows a classic corner mate pattern in a Queen's Gambit Declined structure. The key idea is that the enemy king is boxed in by its own pieces, leaving only a few escape squares and no time to defend. In positions like this, a single forcing move can end the game immediately because the king’s shelter is already compromised. Always look for checks that exploit cramped piece placement and open lines near the king.