Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_London_System
Moves: 1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 c5 5. c3 Nc6 6. Bb5 Bd7 7. Nbd2 Nh5 8. Bg3
Nxg3 9. fxg3 c4 10. O-O a6 11. Ba4 Bd6 12. e4 O-O 13. e5 Bc7 14. Bc2 b5 15. a3
a5 16. b4 cxb3 17. Nxb3 b4 18. Qd3 bxc3 *
Position (FEN): r2q1rk1/2bb1ppp/2n1p3/p2pP3/3P4/PNpQ1NP1/2B3PP/R4RK1 w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 400
Best move: Qxh7#