Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Zukertort_Variation
Moves: 1. d4 d5 2. Nf3 e6 3. Bf4 Nf6 4. e3 b6 5. c4 Bb7 6. cxd5 Nxd5 7. Nc3 Nxf4 8.
exf4 Be7 9. Bd3 O-O 10. Bc2 Nc6 11. Qd3 a5 *
Position (FEN): r2q1rk1/1bp1bppp/1pn1p3/p7/3P1P2/2NQ1N2/PPB2PPP/R3K2R w KQ - 0 12
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 458
Best move: Qxh7#