French Defense Tarrasch Variation Puzzle (Rated 1226): Win the Queen — Knight Sacrifice

White is behind on material, yet one forcing idea flips the evaluation. A knight hops into enemy territory and hits the black queen with tempo, forcing an awkward reply. The natural pawn capture of that knight is exactly the move Black cannot allow: the capturing pawn is the only piece blocking the file between the queens. Once it steps aside, the queen falls for a knight — a swing of six points that leaves White with a decisive edge and a simple chess endgame.