Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Other_variations
Moves: 1. e4 Nc6 2. Nc3 a6 3. Nf3 e5 4. Bc4 Bc5 5. O-O h6 6. Ne2 Nf6 7. d4 exd4 8.
Nexd4 O-O 9. Nxc6 bxc6 10. e5 Nh7 11. Bd3 d6 12. exd6 Bxd6 13. Nd4 Bb7 14. Nf5
Qf6 15. Qg4 Kh8 16. Be3 Bc8 17. Qe4 Bd7 18. Nxd6 cxd6 *
Position (FEN): r4r1k/3b1ppn/p1pp1q1p/8/4Q3/3BB3/PPP2PPP/R4RK1 w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 508
Best move: Qxh7#