Chess puzzle (Checkmate)
Opening: Semi-Slav_Defense, Semi-Slav_Defense_Stonewall_Defense
Moves: 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Ne4 5. e3 c6 6. Bd3 f5 7. Ne5 g6 8. Bxe4
fxe4 9. O-O Nd7 10. Nxd7 Bxd7 11. f3 exf3 12. Rxf3 Bg7 13. e4 dxe4 14. Nxe4 Qe7
15. Bg5 Qb4 16. Qd2 Qxd2 *
Position (FEN): r3k2r/pp1b2bp/2p1p1p1/6B1/2PPN3/5R2/PP1q2PP/R5K1 w kq - 0 17
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1322
Best move: Nd6#