Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Alapin_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nc3 b6 4. Nf3 h6 5. e4 dxe4 6. Nxe4 Bb7 7. Ned2 Nf6 8. Be2
Ne4 9. O-O Bd6 10. a3 O-O 11. Bd3 Nxd2 12. Nxd2 Qh4 13. f4 Bxf4 14. Rxf4 Qxf4
15. Nf3 Qf6 16. Bc2 Nd7 17. Qd3 Bxf3 *
Position (FEN): r4rk1/p1pn1pp1/1p2pq1p/8/2PP4/P2Q1b2/1PB3PP/R1B3K1 w - - 0 18
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 469
Best move: Qh7#