Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Traditional_Variation
Moves: 1. Nf3 d5 2. c4 Nf6 3. d4 e6 4. Bg5 Be7 5. e3 O-O 6. Be2 dxc4 7. Bxc4 Nc6 8.
O-O Na5 9. Qa4 Nxc4 10. Qxc4 b6 11. Qc6 Rb8 12. Nc3 Bb7 13. Qb5 Nd5 14. Nxd5
Bxg5 15. Nxg5 Qxg5 16. Nxc7 *
Position (FEN): 1r3rk1/pbN2ppp/1p2p3/1Q4q1/3P4/4P3/PP3PPP/R4RK1 b - - 0 16
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 617
Best move: Qxg2#