Learn How to Trap a Piece: Endgame Equality
This chess endgame puzzle shows how a seemingly equal position can hide a tactical refutation based on piece activity and king safety. The key idea is that a loose rook can become overloaded when a stronger piece jumps into an active square, forcing a sequence that wins material or restores equality. In classical chess, these moments often come from improving the worst-placed piece and exploiting a hanging piece before the opponent can regroup.