Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Other_variations
Moves: 1. d4 c6 2. c4 d5 3. Nc3 Bf5 4. e3 e6 5. Nf3 Bg4 6. Be2 Bb4 7. Bd2 Ne7 8. a3
Ba5 9. b4 Bc7 10. c5 Nd7 11. h3 Bxf3 12. Bxf3 Nf6 13. Qc2 Rc8 14. Ne2 O-O 15.
O-O Bb8 16. Bc3 Qc7 17. Nf4 Ng6 18. Nd3 *
Position (FEN): 1br2rk1/ppq2ppp/2p1pnn1/2Pp4/1P1P4/P1BNPB1P/2Q2PP1/R4RK1 b - - 12 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 443
Best move: Qh2#