Chess puzzle (Checkmate)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 Nxe4 5. Nxe4 d5 6. Bd3 dxe4 7. Bxe4 Bd6
8. Bxc6+ bxc6 9. d4 exd4 10. Qxd4 O-O 11. O-O Bb7 12. b4 a5 13. Bb2 axb4 *
Position (FEN): r2q1rk1/1bp2ppp/2pb4/8/1p1Q4/5N2/PBP2PPP/R4RK1 w - - 0 14
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 639
Best move: Qxg7#