Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Chigorin_Defense
Moves: 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. e3 e6 5. Nc3 Nf6 6. Be2 Bb4 7. O-O O-O 8. Bd2
Bxf3 9. Bxf3 Bxc3 10. Bxc3 Ne4 11. Bxe4 dxe4 12. d5 Ne7 13. Qd4 exd5 *
Position (FEN): r2q1rk1/ppp1nppp/8/3p4/2PQp3/2B1P3/PP3PPP/R4RK1 w - - 0 14
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 536
Best move: Qxg7#