Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Closed
Moves: 1. e4 c5 2. Nc3 Nc6 3. d3 e6 4. Be3 b6 5. Qd2 d5 6. exd5 exd5 7. Bf4 Nf6 8. h3
Bd6 9. Nf3 O-O 10. Ne2 Re8 11. Bxd6 Qxd6 12. O-O-O Nb4 13. a3 a5 14. c4 dxc4
15. dxc4 Qe6 16. Nf4 Qe4 17. Ng5 *
Position (FEN): r1b1r1k1/5ppp/1p3n2/p1p3N1/1nP1qN2/P6P/1P1Q1PP1/2KR1B1R b - - 4 17
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1193
Best move: Na2#