Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 e6 3. e3 Bd6 4. Bg3 Bxg3 5. hxg3 c5 6. Nf3 Nd7 7. c3 b6 8. Bd3
Bb7 9. Nbd2 Ne7 10. Qc2 O-O 11. Bxh7+ Kh8 12. Bg8+ Kxg8 *
Position (FEN): r2q1rk1/pb1nnpp1/1p2p3/2pp4/3P4/2P1PNP1/PPQN1PP1/R3K2R w KQ - 0 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 734
Best move: Qh7#