Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Tartakower_Defense
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 h6 6. Bh4 O-O 7. e3 b6 8. Be2
dxc4 9. Bxc4 Bb7 10. O-O Nbd7 11. Re1 c5 12. d5 exd5 13. Bxf6 dxc4 14. Bxe7
Qxe7 15. Qa4 Qe6 16. Rad1 Nf6 17. Nd2 Qg4 18. Qxc4 *
Position (FEN): r4rk1/pb3pp1/1p3n1p/2p5/2Q3q1/2N1P3/PP1N1PPP/3RR1K1 b - - 0 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 861
Best move: Qxg2#