Colle System Puzzle (Rated 1365): Attack — Win Material
A discovered attack becomes especially powerful when a line-opening move also creates check or attacks a critical defender. In this middlegame position, White’s rook pressure against the king combines with the bishop’s active placement to overload Black’s defensive resources. The key strategic idea is to value forcing moves—checks, captures, and direct threats—above the temptation to save an attacked piece immediately. Coordinated pressure on the kingside can turn an apparent tactical problem into a decisive material gain.