Chess puzzle (Checkmate)
Opening: Semi-Slav_Defense, Semi-Slav_Defense_Main_Line
Moves: 1. d4 d5 2. c4 Nf6 3. e3 e6 4. Nc3 c6 5. Nf3 Bd7 6. Be2 dxc4 7. Bxc4 Nd5 8.
Nxd5 exd5 9. Be2 Bf5 10. O-O Be4 11. h3 Nd7 12. a3 Nf6 13. b4 Qd6 14. Bd2 Be7
15. Rc1 h5 16. b5 Ng4 17. bxc6 Bxf3 18. Bxf3 *
Position (FEN): r3k2r/pp2bpp1/2Pq4/3p3p/3P2n1/P3PB1P/3B1PP1/2RQ1RK1 b kq - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 571
Best move: Qh2#