Find the Move #14

40. Rh7+ Kg5 41. Rh5#

Hook mate. Black has just made a new queen on a1, but it never gets to do anything. The rook gives check on h7, and the king has to go to g5. Then the rook comes to h5 with mate. The knight on f6 protects the rook, and the pawn on e5 protects the knight. The pawn on f5 covers g6, the pawn on g3 covers f4 and h4, and Black's own pawn stands on g4. The pawn on f5 can't be taken: it is on the same rank as the rook.