Kings Indian Attack Keres Variation Puzzle (Rated 895): Win Material — Crushing Intermezzo

This puzzle is a classic middlegame tactical refutation in the King’s Indian Attack. White’s active bishop and queen create a forcing sequence that wins material by exploiting a loose black queen and an overloaded pawn structure. The key idea is an intermezzo: instead of recapturing immediately, White uses a forcing check to improve the position and then takes advantage of the exposed queen. It is a strong example of how tactical motifs can turn a slightly better position into a decisive material gain.