Chess puzzle (Crushing)
Opening: Sicilian_Defense, Sicilian_Defense_Bowdler_Attack
Moves: 1. e4 c5 2. Bc4 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 d6 6. Nf3 Nf6 7. e5 Ne4 8.
exd6 Nxd6 9. Bb3 O-O 10. Bf4 Bg4 11. c3 e5 12. Be3 e4 13. Nd4 *
Position (FEN): rn1q1rk1/pp3pbp/3n2p1/8/3Np1b1/1BP1B3/PP3PPP/RN1QK2R b KQ - 1 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 835
Best move: Bxd1