Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 dxc4 4. e3 Bf5 5. Qf3 e6 6. Qxb7 Nbd7 7. Nb5 Rb8 8.
Nxc7+ Ke7 9. Qxa7 g6 10. Qa3+ Nc5 11. Qxc5+ Kd7 12. Bxc4 Qxc7 13. Qxc7+ Kxc7
14. Bd2 Nd5 15. Nf3 Rxb2 16. O-O-O Rxa2 17. Bxa2 *
Position (FEN): 5b1r/2k2p1p/4p1p1/3n1b2/3P4/4PN2/B2B1PPP/2KR3R b - - 0 17
Black to move.
Themes:  Middlegame Boden's Mate, Mate in 1 
Puzzle rating: 781
Best move: Ba3#