Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Scandinavian_Variation
Moves: 1. e4 d5 2. exd5 Qxd5 3. d4 Nc6 4. Nc3 Qe6+ 5. Qe2 Qd6 6. Qd3 e6 7. Bd2 Bd7 8.
O-O-O O-O-O 9. Be3 f5 10. d5 Ne5 11. Qe2 Ne7 12. dxe6 Qxe6 13. Bxa7 N7c6 14.
Qa6 bxa6 *
Position (FEN): 2kr1b1r/B1pb2pp/p1n1q3/4np2/8/2N5/PPP2PPP/2KR1BNR w - - 0 15
White to move.
Themes: Queenside Attack Opening Mate in 1 
Puzzle rating: 742
Best move: Bxa6#