Chess puzzle (Crushing)
Opening: Scotch_Game, Scotch_Game_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 dxc6 7. Nc3 Be6
8. Bd3 O-O-O 9. Qe2 Nh6 10. Be3 Bb4 11. Bd2 Rhe8 12. f3 Qd4 13. O-O-O Qb6 14.
a3 Be7 15. Be3 Qa5 16. Bd2 Bxa3 17. bxa3 *
Position (FEN): 2krr3/ppp2ppp/2p1b2n/q7/4P3/P1NB1P2/2PBQ1PP/2KR3R b - - 0 17
Black to move.
Themes: Queenside Attack Middlegame  
Puzzle rating: 718
Best move: Qxa3+