Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Hyperaccelerated_Dragon
Moves: 1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 cxd4 5. cxd4 d5 6. e5 Bg4 7. Nc3 Nc6 8. Be2
Nh6 9. Be3 Nf5 10. Qd2 O-O 11. O-O-O Nb4 12. a3 Nxe3 13. fxe3 a5 14. h3 Bf5 15.
g4 Be4 16. Rhf1 Qc7 17. Ng5 *
Position (FEN): r4rk1/1pq1ppbp/6p1/p2pP1N1/1n1Pb1P1/P1N1P2P/1P1QB3/2KR1R2 b - - 4 17
Black to move.
Themes: Pin Middlegame Mate in 1 
Puzzle rating: 934
Best move: Na2#