Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Exchange_Variation
Moves: 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Qe2+ Be7 5. Nf3 Nf6 6. Bg5 O-O 7. Nbd2 Re8 8.
O-O-O Bg4 9. h3 Bh5 10. g4 Bg6 11. Ne5 Nfd7 12. Bf4 Nxe5 13. dxe5 Bc5 14. Qb5
Na6 15. Qxb7 Nb4 16. Qb5 Qe7 17. c3 *
Position (FEN): r3r1k1/p1p1qppp/6b1/1QbpP3/1n3BP1/2P4P/PP1N1P2/2KR1B1R b - - 0 17
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 976
Best move: Nxa2#