Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Chigorin_Defense
Moves: 1. d4 d5 2. c4 dxc4 3. Nc3 Nc6 4. Nf3 Bg4 5. Be3 e6 6. h3 Bh5 7. g4 Bg6 8. h4
h5 9. g5 f6 10. Bh3 fxg5 11. Nxg5 Bf5 12. Nxe6 Bxe6 13. Bxe6 Bd6 14. Qa4 Qf6
15. d5 Ne7 16. Ne4 Qxb2 17. O-O Qe5 18. dxc6 *
Position (FEN): r3k2r/ppp1n1p1/2PbB3/4q2p/Q1p1N2P/4B3/P3PP2/R4RK1 b kq - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 858
Best move: Qh2#