Kings Indian Attack Spassky Variation Puzzle (Rated 1131): Win the Queenside Attack — Decisive Material Gain

This puzzle is a classic middlegame queenside attack where active piece placement creates immediate tactical pressure against the enemy king and queen. White’s queen invades with tempo, forcing the king to step aside while the bishop and queen coordinate on vulnerable dark squares and loose pieces. The key idea is not a slow buildup but a forcing sequence that wins material by exploiting an overloaded defender and a trapped queen. Strong attacks often begin when one move improves both threat and tempo at once.