Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Knight_Variation
Moves: 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Bf5 5. Nc3 Nc6 6. Bb5 Bb4 7. Bd2 Ne7 8.
O-O O-O 9. a3 Bxc3 10. Bxc3 a6 11. Ba4 b5 12. Bb3 Na5 13. Bxa5 Be4 14. Qe2 Ng6
15. Nd2 Nf4 16. Qd1 Qg5 17. g3 *
Position (FEN): r4rk1/2p2ppp/p7/Bp1p2q1/3Pbn2/PB4P1/1PPN1P1P/R2Q1RK1 b - - 0 17
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1009
Best move: Nh3#