Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Chigorin_Variation
Moves: 1. d4 d5 2. Nf3 Nc6 3. c4 e6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 O-O 7. h3 h6 8. Bf4 b6
9. Rc1 dxc4 10. Bxc4 Bb7 11. O-O Bd6 12. Ne2 Ne7 13. Qc2 Ng6 14. Bxd6 Qxd6 15.
Ng3 Bxf3 16. gxf3 Nh4 17. Be2 Qd5 18. f4 *
Position (FEN): r4rk1/p1p2pp1/1p2pn1p/3q4/3P1P1n/4P1NP/PPQ1BP2/2R2RK1 b - - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1011
Best move: Qg2#