Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_London_System
Moves: 1. d4 e6 2. Bf4 d5 3. Nf3 Bd6 4. Bxd6 Qxd6 5. c3 Nf6 6. Nbd2 O-O 7. Qc2 c5 8.
e4 dxe4 9. Nxe4 Nxe4 10. Qxe4 cxd4 11. Nxd4 Nc6 12. Bd3 e5 *
Position (FEN): r1b2rk1/pp3ppp/2nq4/4p3/3NQ3/2PB4/PP3PPP/R3K2R w KQ - 0 13
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 664
Best move: Qxh7#