Chess puzzle (Crushing)
Opening: Four_Knights_Game, Four_Knights_Game_Spanish_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 d6 5. d3 Bd7 6. Bg5 Be7 7. O-O O-O 8. h3
h6 9. Be3 a6 10. Bc4 b5 11. Bb3 Rb8 12. a3 a5 13. Nd5 Nxd5 14. Bxd5 b4 15. Bxc6
Bxc6 16. axb4 axb4 17. Qd2 Re8 18. Ra4 *
Position (FEN): 1r1qr1k1/2p1bpp1/2bp3p/4p3/Rp2P3/3PBN1P/1PPQ1PP1/5RK1 b - - 3 18
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 820
Best move: Bxa4