Alekhine Defense Krejcik Variation Puzzle (Rated 868): Discover Attack — Winning Combination
This middlegame puzzle is a classic discovered attack idea: one piece moves with tempo, uncovering a stronger threat behind it. White’s active pieces and the exposed black king create a tactical window where the opponent’s queen and king become vulnerable at the same time. The key is recognizing that the first move is not just a check, but also a clearance move that opens a line for a follow-up attack on a major piece.