Nimzo Indian Defense Spielmann Variation Puzzle (Rated 932): Win with a Skewer — Queenside Attack
This middlegame puzzle shows how a well-timed checking move can force the king into a worse square and expose hidden tactical targets. Black’s active bishop and knight work together to create a skewer against the white king’s defenders, while the rook on the d-file supports the attack. Even though White has extra material, the king’s safety imbalance makes the position tactically dangerous. The key lesson is that active pieces and forcing moves can outweigh a material deficit in classical chess.