Chess puzzle (Checkmate)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. c4 c5 3. e3 d5 4. cxd5 exd5 5. dxc5 Bxc5 6. Nc3 Nf6 7. Nf3 O-O 8.
Be2 Nc6 9. O-O Bg4 10. h3 Bxf3 11. Bxf3 Ne7 12. a3 a6 13. b4 Ba7 14. Bb2 b5 15.
Ne2 Ng6 16. Nd4 Qd6 17. Rc1 Bb8 18. Rc6 *
Position (FEN): rb3rk1/5ppp/p1Rq1nn1/1p1p4/1P1N4/P3PB1P/1B3PP1/3Q1RK1 b - - 7 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 666
Best move: Qh2#