Chess puzzle (Checkmate)
Opening: Scandinavian_Defense, Scandinavian_Defense_Modern_Variation
Moves: 1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. d4 Bf5 5. Bd3 Qd7 6. Qf3 Be6 7. Ne4 Nc6 8.
Ne2 O-O-O 9. Nc5 Qd6 10. c4 Ndb4 11. Bf4 Nxd4 *
Position (FEN): 2kr1b1r/ppp1pppp/3qb3/2N5/1nPn1B2/3B1Q2/PP2NPPP/R3K2R w KQ - 0 12
White to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 691
Best move: Qxb7#