Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Normal_Defense
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. e3 Be7 5. Nf3 O-O 6. Bd2 c5 7. cxd5 Nxd5 8. Bc4
Nxc3 9. Bxc3 a6 10. dxc5 Bxc5 11. Qc2 b5 12. Bd3 g6 13. Be4 Ra7 14. Ne5 Qb6 15.
Ng4 f5 *
Position (FEN): 1nb2rk1/r6p/pq2p1p1/1pb2p2/4B1N1/2B1P3/PPQ2PPP/R3K2R w KQ - 0 16
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1418
Best move: Nh6#