Chess puzzle (Checkmate)
Opening: Scandinavian_Defense, Scandinavian_Defense_Marshall_Variation
Moves: 1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nf6 5. Nc3 Bf5 6. Qa4+ Qd7 7. Qxd7+ Nbxd7
8. Nf3 h6 9. Bf4 O-O-O 10. Nb5 c6 *
Position (FEN): 2kr1b1r/pp1nppp1/2p2n1p/1N3b2/2PP1B2/5N2/PP3PPP/R3KB1R w KQ - 0 11
White to move.
Themes: Queenside Attack Opening Mate in 1 
Puzzle rating: 727
Best move: Nxa7#