Corner Mate Puzzle (Rated 846): Spot Corner Mate — Mate in 1

This puzzle is a classic middlegame tactical finish where king safety outweighs material. The attacking side has coordinated pieces aimed at the enemy king, and the key idea is a corner mate pattern: the king is trapped near the edge with no flight squares. In positions like this, always scan for forcing checks first, especially when a knight can jump into a protected square that seals the escape route and ends the game immediately.