Russian Game Kingside Attack Puzzle (Rated 991): Spot Mate in 1 — Kingside Attack

This middlegame puzzle is a classic kingside attack lesson from the Russian Game, where one side’s king safety collapses after a sharp queen invasion. The key idea is to recognize when the enemy king’s shelter has been stripped away and a direct mating net is already in place. Even if material looks balanced or slightly favorable, a single tactical shot can end the game immediately when the king is boxed in and escape squares are covered.