Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Exchange_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 O-O 8. Bd3
Be6 9. Nf3 Nbd7 10. O-O c5 11. dxc5 Nxc5 12. Bc2 a6 13. b4 Nce4 14. Nxe4 Nxe4
15. Bxe7 Qxe7 16. a3 Nc3 17. Qd3 Rac8 *
Position (FEN): 2r2rk1/1p2qpp1/p3b2p/3p4/1P6/P1nQPN2/2B2PPP/R4RK1 w - - 3 18
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 741
Best move: Qh7#