Chess puzzle (Checkmate)
Opening: Bird_Opening, Bird_Opening_Other_variations
Moves: 1. f4 d6 2. Nf3 g6 3. e4 Bg7 4. d4 Nf6 5. e5 Nfd7 6. Bc4 e6 7. O-O a5 8. a4 Na6
9. c3 O-O 10. Nbd2 Qe7 11. Bxa6 Rxa6 12. Ne4 h6 13. g4 b6 14. g5 h5 15. Nf6+
Kh8 16. Nh4 c5 17. Qd3 Ra7 18. Qxg6 fxg6 *
Position (FEN): 2b2r1k/r2nq1b1/1p1ppNp1/p1p1P1Pp/P2P1P1N/2P5/1P5P/R1B2RK1 w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 802
Best move: Nxg6#