Checkmates From Hou Yifan Games Puzzle: Mate — Back Rank
This middlegame chess puzzle demonstrates how a forcing combination can transform active piece placement into a back rank mate. White’s queen and rooks coordinate against a vulnerable king, while a knight creates a double attack on valuable pieces. The key idea is to exploit overloaded defenders and open a line for a rook. Once the defensive pieces are diverted, the king’s restricted escape squares make the final checkmate possible.