Chess puzzle (Crushing)
Opening: Ruy_Lopez, Ruy_Lopez_Berlin_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Bxc6 dxc6 6. Nxe5 O-O 7. Nc3 Re8
8. Nd3 Bb6 9. Re1 *
Position (FEN): r1bqr1k1/ppp2ppp/1bp2n2/8/4P3/2NN4/PPPP1PPP/R1BQR1K1 b - - 6 9
Black to move.
Themes:  Opening  
Puzzle rating: 1575
Best move: Bg4