Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. Nf3 Nc6 5. c3 Qb6 6. Na3 Qxb2 7. Nb5 Bf5 8.
Nc7+ Kd8 9. Nxa8 Bc2 10. Qc1 Qxc3+ 11. Nd2 Ne4 12. Nc7 Nxd2 13. Nxd5 Nf3+ 14.
Ke2 Ncxd4+ 15. exd4 *
Position (FEN): 3k1b1r/pp2pppp/8/2pN4/3P1B2/2q2n2/P1b1KPPP/R1Q2B1R b - - 0 15
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1091
Best move: Nxd4#