Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Chameleon_Variation
Moves: 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 a6 5. Bg5 Bf5 6. e3 e6 7. Bd3 Bg6 8. O-O
Be7 9. Ne5 Nbd7 10. Nxg6 hxg6 11. Qb3 b5 12. cxb5 axb5 13. Rfc1 Ng4 14. Bxe7
Qxe7 15. h3 Qh4 16. Bf1 Qxf2+ 17. Kh1 Rxh3+ 18. gxh3 *
Position (FEN): r3k3/3n1pp1/2p1p1p1/1p1p4/3P2n1/1QN1P2P/PP3q2/R1R2B1K b q - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 830
Best move: Qh2#