Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Vienna_Variation
Moves: 1. d4 d5 2. c4 dxc4 3. Nf3 e6 4. Nc3 Nf6 5. e3 c5 6. Bxc4 cxd4 7. Qxd4 Bd7 8.
Qd3 Nc6 9. O-O Be7 10. a3 Ng4 11. Bd2 Nge5 12. Qe2 Rc8 13. Nxe5 Nxe5 14. Ba2
O-O 15. Rad1 Qb6 16. b4 Bf6 17. Bb1 Nc4 18. Qd3 Ne5 *
Position (FEN): 2r2rk1/pp1b1ppp/1q2pb2/4n3/1P6/P1NQP3/3B1PPP/1B1R1RK1 w - - 5 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 874
Best move: Qxh7#